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Publications (130)
While MXene is widely used as an electrode material for supercapacitor, the intrinsic limitation of stacking caused by the interlayer van der Waals forces has yet to be overcome. In this work, a strategy is proposed to fabricate a composite scaffold electrode (MCN) by intercalating MXene with highly nitrogen‐doped carbon nanosheets (CN). The 2D str...
Strong and ductile sodium alginate (SA) reinforced polyacrylamide (PAM)/xanthan gum (XG) double network ionic hydrogels were constructed for stress sensing and self-powered wearable device applications. In the designed network of PXS-Mn+/LiCl (short for PAM/XG/SA-Mn+/LiCl, where Mn+ stands for Fe3+, Cu2+ or Zn2+), PAM acts as a flexible hydrophilic...
Graphene aerogel (GA) holds great potentials for versatile applications, for example, oil-water separation and piezoresistive sensing. However, GA is generally prepared via time-consuming and complicated methods. Herein, a rapid and facile approach has been proposed to fabricate GA by a two-step reduction method, i.e., hydrothermal reduction by thi...
A simple strategy is proposed to fabricate [email protected] carbon (MC) composite film by vacuum filtration followed by annealing. PDA nanospheres serve as spacers, carbon precursor, and nitrogen sources, and meanwhile endow MC with porous networks. Nitrogen doping improves the electrochemical performance of MC, while the porous network increases...
A beneficial strategy for enhancing the electronic conductivity of transition metal chalcogenides (TMCs) as lithium-ion battery anode material is through shortening the charge transfer path between the sulfide particles. However, the combination between the carbon-based matrix and electroactive materials is sometimes weak, which hinders the cycling...
Double network (DN) conductive hydrogels have become a hotspot for wearable sensors. However, building DN hydrogel-based strain sensors with excellent mechanical strength, high sensitivity, and wide operation window still remains a challenge. This paper fabricates a high-performance strain sensor from MXene-composited polyvinyl alcohol/sodium carbo...
Conventional humidity sensors have poor flexibility and low sensitivity, which makes them difficult for wearable electronic device applications. This study aims to fabricate a flexible, high-sensitivity and breathable humidity sensor for skin humidity monitoring. The sensor includes two parts, i.e., shape memory polylactic acid fiber (SMPLAF) as th...
Polylactic acid (PLA) has promising potentials for transient electronic applications due to its biodegradability and biocompatibility, which is expected to help alleviate electronic waste disposal problems. Recently, PLA has been used as the polymer substrate to fabricate green and flexible supercapacitors (SCs). However, the intrinsic fracture tex...
MXene with low band gap and excellent metallic conductivity is a novel ultrathin two-dimensional transition metal carbide, and has been widely used as the photocatalytic carrier of semiconductor material. Herein, ZnO/MXene composites were fabricated by a facile two-step chemical reaction method and their structures and photocatalytic performances w...
Wearable piezoresitive sensors have exhibited promising potentials for applications in motion detection and human-computer interactions. Herein, we reported a facile sol-gel followed by hydrothermal reduction approach to prepare polypyrrole/reduced graphite oxide aerogel (PPy@rGA) film, which is more oriented to flexible wearable piezoresistive sen...
A success has been achieved in the synthesis of dendritic core-shell copper-nickel [email protected] oxide on nickel foam (Cu-Ni/NF) electrode for non-enzymatic glucose detection by going through a facile electrodeposition process followed by oxidation in NaOH solution. The direct electrodeposition approach facilitates the transfer of electrons in...
The paper reported a facile method to prepare activated carbons (ACs) with high methylene blue (MB) adsorption capabilities via reflux-microwave-assisted activation approach. The low-cost agricultural waste corncob precursor was first refluxed in the aqueous solution of activating agents (i.e., ZnCl2 or KOH) for pretreatment, followed by microwave-...
Silicon nanocomposites have great potential applications in lithium-ion batteries. However, huge mechanical strain, capacity retention and unstable solid electrolyte interface formation weaken their applications in the real world. To overcome the above challenges, a novel facile route was adopted to design nanostructured silicon core carbon shell c...
Polymer nanocomposites (PNCs), i. e. nanofillers dispersed in a polymer matrix, have become a prominent area of current research promoted by rapid developments in the polymer science and nanotechnology. As a promising alternative to conventional composites which are reinforced with micro‐scale fillers, PNCs exhibit substantially improved overall pe...
Porous hierarchical activated carbons (HACs) exhibit fascinating physical properties and are promising for supercapacitor applications. Facile and universal methods are required to produce high performance HACs on a large scale to boost their practical applications. An economical and template free method has been used to prepare HACs from lignocell...
The Cover Feature shows an illustration of a typical sodium‐ion capacitor (NIC) device in a starry background, which is filled the names of known battery‐type electrode materials reviewed in this paper. More potential battery‐type electrode materials in the vast unknown sky are waiting to be explored. More information can be found in the Review by...
Sodium‐ion capacitors (NICs), as a new type of hybrid energy storage devices, couples a high capacity bulk intercalation based battery‐style negative (or positive) electrode and a high rate surface adsorption based capacitor‐style positive (or negative) electrode, delivering high energy density, high power density, and long lifespan. Since the firs...
Herein, we first report a tunable organic magnetoresistance (OMAR) effect in the polyaniline (PANI) coated acid treated poly (p-phenylene-2, 6-benzobisoxazole) (t-PBO) short fibers. This unique OMAR is interpreted by the...
This paper reported the synthesis of an organic solvent, chloroethoxy-terminated perfluoropolyether (PFPECH2CH2Cl), which was obtained by reacting hydroxyethoxy-terminated perfluoropolyether with thionyl chloride. Liquid polymer electrolytes were then prepared by solving bis(trifluoromethane)sulfonimide lithium salt in PFPECH2CH2Cl for lithium ion...
Piezoelectric materials and devices have drawn extensive attention for energy harvesting due to their excellent electromechanical conversion properties. With increasing concerns about environmental problems in traditional lead-based piezoelectric materials, it is imperative to develop lead-free piezoelectric alternatives. The paper is intended to g...
One great challenge existing in electrochemical capacitors (ECs) is to achieve high energy densities at high rates. Currently, most research efforts are focused on development of new electrode materials or modification of the microstructure of traditional electrode materials. Herein, we propose a new strategy for significant enhancement of the ener...
This chapter focuses on electrochromic (EC) materials and devices, including the history-, conceptual-, and material-oriented basis of ECs with special attention to recent progress in the application of nanostructures. EC materials, which dynamically change color under applied potential, are widely studied for use in energy-efficient smart windows....
Flaky polyaniline-reduced graphene oxide (PANI-rGO) composites have larger specific capacitance due to the improved redox charge of PANI in the composites, fabricated by simultaneous reduction of PANI-GO. The structural and morphological analyses were carried out using scanning electron microscopy, UV-Visspectroscopy, and thermogravimetry. The resu...
Unique negative giant magnetoresistance (GMR) of up to -43% at room temperature was observed in the 10 wt% titania/polyaniline (TiO2/PANI) nanocomposites prepared by simple oxidation polymerization. And the negative MR value was further evaluated using forward interference model. Other properties were tested and comparatively reported. The resistiv...
In this chapter, the application of two commonly used calorimetries, i.e., differential scanning calorimetry (DSC) and microscale combustion calorimetry (MCC), will be introduced. DSC is mainly used to study the melting and crystallization behaviors of polymers/polymer nanocomposites. Here, the nanofiller-dependent melting and crystallization behav...
Energy conversion and storage are considered two of the most important technologies in today's green and sustainable energy science. Conjugating energy harvest and storage to fabricate self-powered electrochemical energy storage systems (SEESs) that harvest their operating energy from the environment holds great promise to power future portable and...
The operating conditions such as composition of electrolyte and temperature can greatly influence the formic acid (HCOOH) oxidation reaction (FAOR). Palladium decorated multi-walled carbon nanotubes (Pd/MWNTs) were successfully synthesized and employed as nanocatalysts to explore the effects of formic acid, sulfuric acid (H2SO4) concentration and t...
Polyaniline (PANI) nanocomposites embedded with manganese iron oxide (MnFe2O4) nanoparticles were prepared as thin films by electropolymerizing aniline monomers onto indium tin oxide (ITO) glass slides pre-spin-coated with MnFe2O4 nanoparticles. The shift of the characteristic peaks of PANI/MnFe2O4 in UV-visible absorption spectra and Fourier trans...
Novel papers based on epoxy nano-composites with magnetite and carbon nano-fiber (CNF) nanohybrids, without any surface modification to the nanofillers, show combined conductive, magnetic, and magnetoresistive properties. Negative magnetoresistance (MR) is observed in synthesized epoxy nanohybrid papers for the first time. These papers have potenti...
Operating conditions such as the composition of electrolyte and temperature can greatly influence the performance of formic acid oxidation reaction (FAOR). In order to achieve the best performance at various conditions, we employed an as-synthesized high electrocatalytic palladium decorated multi-walled carbon nanotubes nanocatalysts (Pd/MWNTs) to...
Sustainable energies from transient and renewable energy reservoirs such as wind and solar are in urgent demand due to the ever increasing energy crisis arising from the limited reserves of fossil fuels. Given the intermittent nature of these renewable energy resources, reliable energy storage systems are critically needed to store and supply energ...
Polyaniline (PANI) nanocomposites embedded with manganese iron oxide (MnFe 2 O 4 ) nanoparticles were prepared as thin films by electropolymerizing aniline monomers onto indium tin oxide (ITO) glass slides pre- spin-coated with MnFe 2 O 4 nanoparticles. The UV-visible absorption spectra, FT-IR and SEM results confirmed the formation of the composit...
Ultrafine Palladium iron alloy (FePd) nanoparticles (NPs) deposited on gamma phased iron oxide (r-Fe 2 O 3 ), FePd-Fe 2 O 3 , which were further anchored on Multi-walled carbon nanotubes (MWNTs), FePd-Fe 2 O 3 /MWNTs, was successfully synthesized by a facile one-pot solution based method as thermal decomposing palladium acetylacetonate (Pd(acac) 2...
Transparent anhydride-bisphenol-A epoxy systems filled with pristine nanosilica were prepared and compared with the counterparts with the nanosilica coated with surface initiated polymerization (SIP) prepared phosphoric acid (H3PO4) doped polyaniline (PANI). The rheological investigation on the bisphenol-A epoxy nanosuspensions demonstrated that th...
Polymer nanocomposites exhibit unique physicochemical properties that cannot be obtained with individual component acting alone. Polymer nanocomposites have attracted significant research interests due to their promising potential for versatile applications ranging from environmental remediation, energy storage, electromagnetic (EM) absorption, sen...
Carbon nanostructures—including graphene, fullerenes, etc.—have found applications in a number of areas synergistically with a number of other materials. These multifunctional carbon nanostructures have recently attracted tremendous interest for energy storage applications due to their large aspect ratios, specific surface areas, and electrical con...
A novel carbon monolith material with embedded mesopores and nanoparticles has been synthesized via a facile catalytic graphitization process by using natural wood as carbon precursor. BET results reveal a large specific surface area of 273.0 m2 g-1 and narrow pore size distribution of ~4.0 nm in diameter. This unique material shows excellent toxic...
Carboxyl multi-walled carbon nanotubes (MWNTs-COOH) decorated with different palladium (Pd) nanoparticle loadings were synthesized by thermally decomposing different amounts of palladium acetylacetonate (Pd(acac)2) in a refluxing xylene solution with a fixed amount of dispersed MWNTs-COOH. The increased ratio of D band/G band and the decreased area...
Polypyrrole (PPy)/cobalt oxide (Co3O4)/carbon paper (CP) ternary composites prepared by potentiodynamic electropolymerization of pyrrole monomers onto flower-like Co3O4 (f-Co3O4) nanoparticles coated on CP (PPy/f-Co3O4/CP) were studied serving as electrode materials for supercapacitor applications. The f-Co3O4 with unique porous morphology on CP wa...
Polyimide (PI) nanocomposite reinforced with Fe3O4 nanoparticles (NPs) at various NPs loadings levels of 5.0, 10.0, 15.0, and 20.0 wt% were prepared. The chemical interactions of the Fe3O4 NPs/PI nanocomposites were characterized using Fourier Transform Infrared (FT-IR) spectroscopy. X-ray Diffraction (XRD) results revealed that the addition of NPs...
Polypropylene (PP)/carbon nanotubes (CNTs) nanocomposites were prepared by coating CNTs on the surface of gelated/swollen soft PP pellets. The electrical conductivity (σ) studies revealed a percolation threshold of only 0.3 wt% and the electrical conductivity mechanism followed a 3-d variable range hopping (VRH) behavior. At lower processing temper...
Carboxyl-functionalized multiwalled carbon nanotubes (MWNT-COOH) decorated with palladium (Pd) nanoparticles (NPs, Pd–MWNT-COOH) are prepared by using a one-pot thermal decomposition method without addition of reductant or surfactant. An increased ratio of the D band to G band in Raman spectra and a decreased ratio of oxygen-containing groups measu...
In this work, multi-walled carbon nanotube (MWNT) nanocomposites with homogenously anchored nanomagnetite of 10–20 nm prepared by a hydrothermal-annealing method have been demonstrated to serve as anode materials for lithium ion batteries (LIBs) with a specific capacity of 829 mA h g−1 after 50 cycles at a current density of 100 mA g−1 and a revers...
Zn2+-doped magnetite (Fe3O4) nanorods with carbon coating of controllable thickness (Zn-Fe3O4@C) were prepared from lab-made Zn2+-doped Fe2O3 nanorods which were simultaneously coated with and reduced by carbon during the carbonization process using pyrrole as the carbon precursor. The as-prepared Zn-Fe3O4@C nanocomposites were evaluated as anode m...
Electrochemical capacitors have attracted significant attention for their promising potential applications ranging from portable electronic devices to hybrid electrical vehicles and large industrial equipments.1-5 Two cobalt oxides with three-dimensional flower- and ball-like morphologies, respectively, were prepared by a facile solvothermal method...
The conductive polyaniline (PANI) polymer nanocomposites reinforced with titanium dioxide (TiO2) nanoparticle have been successfully fabricated using a facile surface initiated polymerization (SIP) method. The scanning electron microscope (SEM) is used to characterize the surface morphology of the as-received TiO2 nanoparticles nanoparticles, pure...
Carboxyl Multi-walled carbon nanotubes (MWNTs-COOH) supported palladium (Pd) nanoparticles (NPs) catalysts (Pd/MWNTs-COOH) were prepared by a one-pot solution-based method, i.e., direct decomposing palladium acetylacetonate (Pd(acac)2) in a refluxing xylene solution in the presence of MWNTs-COOH without any additives. Pd/MWNTs-COOH with different P...
In the paper, the high performance ethylene 1-octene copolymer (EOC) nanocomposites have been successfully fabricated by innovatively coating carbon nanotubes (CNTs) on the surface of gelated/swollen EOCs pellets. The effects of nanofiller loading levels and the processed temperature on the morphology, thermal stability, crystal structure, melt rhe...
In this paper, the high performance polystyrene (PS) [1] polymer nanocomposites (PNCs) have been fabricated by a solvent extraction method [2] filled with various Fe3O4nanoparticles (NPs) and carbon nanofibers (CNFs) loading levels. The effects of nanofillers loading levels on the morphology, thermal stability, crystalline phase, thermomechanical p...
Abstracts:
* Abstract for Posterof Different carbon filler-PU.docx (18.7KB) - Uploading Abstracts
Sustainable energies from transient and renewable energy reservoirs such as wind and solar are in urgent demand due to the ever increasing energy crisis arising from the limited reserves of fossil fuels. Given the intermittent nature of these renewable energy resources, reliable energy storage systems are critically needed to store and supply energ...
A reaction mechanism based on the near-critical water homolysis of bonds in the cured epoxy followed by the saturation of the resulting radicals by hydrogen abstraction from the donor was discussed. The compounds evolved during degradation were identified by gas chromatography and mass spectrometer. The materials prepared possess the characteristic...
Smart self-healing coatings for corrosion protection of metallic substrates (steel, magnesium, and aluminium, and their alloys) have attracted tremendous interest due to their capability to prevent cracks propagation in the protective coatings by releasing active agents from micro/nanocapsules in a controllable manner. This paper aims to give a con...
A highly electrically conductive and uniform polymer film containing small, evenly sized particles was potentiodynamically electropolymerized at a slow scan rate of 50 mV s−1, as compared to the strongly agglomerated and low-conducting films obtained at higher scan rates of 100 and 200 mV s−1. Cyclic voltammetry and galvanostatic charge–discharge e...
Polyaniline (PANI) nanofibers prepared by high gravity chemical oxidative polymerization in a rotating packed bed (RPB) have demonstrated a much higher specific capacitance of 667.6 F/g than 375.9 F/g of the nanofibers produced by a stirred tank reactor (STR) at a gravimetric current of 10 A/g. Meanwhile, the cycling stability of the electrode is 6...
For the liquid epoxy nanosuspensions with both fibril and spherical polypyrrole (PPy) nanostructures, a stronger PPy nanofibers/epoxy interaction and more temperature stable behavior with a lower flow activation energy of nanosuspensions with nanofibers (54.34 kJ/mol) than that with nanopsheres (71.15 kJ/mol) were revealed by the rheological studie...
Polypyrrole (PPy)/carbon paper (CP) nanocomposite films were potentiodynamically prepared via the electropolymerization of pyrrole monomers onto the CP at three different scan rates (200, 100, and 50 mV/s), and were then investigated for free-standing electrochemical capacitor applications. The scanning electron microscopy (SEM) images reveal that...
The annealing effect on the catalytic performances of multi-walled decorated palladium nanocatalyst (Pd/MWNTs) for ethanol was investigated. The as-synthesized and annealed nanocatalysts were characterized by X-ray diffraction (XRD), which implied similar crystal structure but different average particle sizes. Transmission electron microscope (TEM)...
Electrochemical capacitors have attracted significant attention for their promising potential applications ranging from portable electronic devices to hybrid electrical vehicles and large industrial equipments. Most of the research efforts have been confined within the electrode materials to improve the energy density or power density till now. Her...
Porous manganese oxide (Mn2O3) microspheres have been successfully fabricated through annealing the solvothermal lab-made MnCO3 precursor. Experimental results reveal that polyvinyl-pyrrolidone (PVP) plays a pivotal role in controlling the size and uniformity of the MnCO3 microspheres. The carbon-coated MnO porous microspheres (MnO@C) with a specif...
In the present work, silver nanoparticles (NPs) were deposited on nickel hydroxide nanosheet (NS) arrays by pulsed laser deposition (PLD) for surface-enhanced Raman scattering (SERS) spectroscopy. The effective high specific surface area with silver NPs decorated on the NS arrays was revealed by field-emission scanning electron microscopy (FESEM) a...
In this review, the authors will discuss novel and prospective antibody nanosensors for the detection of specific analytes used in a number of fields of analytical chemistry. Biosensors—transducers that incorporate biological molecules for recognition—have been found to be fundamental in a number of chemical, clinical, and environmental analyses. A...
The ever-increasing disposal of municipal solid waste (MSW) has caused serious environmental problems in the past few decades. Landfilling, incineration, and recycling are currently the major options for MSW treatment. However, landfilling poses environmental risks due to the chemical inertness of plastics and limited available space, a serious dra...
The annealing effect on the catalytic performances of multi-walled decorated palladium nanocatalyst (Pd/MWNTs) for ethanol was investigated. The as-synthesized and annealed nanocatalysts were characterized by X-ray diffraction (XRD), which implied similar crystal structure but different average particle sizes. Transmission electron microscope (TEM)...
Polypyrrole (PPy)/carbon paper (CP) nanocomposite films were potentiodynamically prepared via the electropolymerization of pyrrole monomers onto the CP at three different scan rates (200, 100, and 50 mV/s), and were then investigated for free-standing electrochemical capacitor applications. The scanning electron microscopy (SEM) images reveal that...
Electrochemical capacitors have attracted significant attention for their promising potential applications ranging from portable electronic devices to hybrid electrical vehicles and large industrial equipments. Most of the research efforts have been confined within the electrode materials to improve the energy density or power density till now. Her...
The corrosion of structural metals, i.e., the alloys of iron and aluminum, usually involves the oxidation of metals and the reduction of oxygen, protons (H ⁺ ), and/or water. As one of the most serious problems, corrosion imposes a major impact on the economics of industrial nations. Therefore, corrosion protection has become an issue of prime impo...
An OH terminated hyperbranched polyester is used to stabilize TiO2 nanomaterials (10 nm) in situ synthesized via a sol–gel method with butyltitanate as precursor. X-ray diffraction (XRD) analyses and thermogravimetric (TGA) analyses illustrate the interactions of the hyperbranched polyester with the TiO2 nanoparticles. The stabilized TiO2 nanocompo...
Exciton and biexciton emission energies as well as excitonic fine-structure splitting (FSS) in single (In,Ga)As/GaAs quantum dots (QDs) have been continuously tuned using hydrostatic pressure up to 4.4 GPa. The blue shift of excitonic emission and the increase of FSS are 320 meV and , respectively, which are significantly greater than those that co...
Carbon fabrics (CFs) loaded with 5.0, 10.0, 15.0 and 20.0 wt% polyaniline (PANI) (PANI/CF) prepared by soaking carbon fiber fabrics in 1.0 wt% PANI m-cresol solution have demonstrated superior hexavalent chromium (Cr(VI)) removal performance compared to the as-received CFs. The PANI/CF nanocomposites were noticed to remove Cr(VI) from solutions wit...
Sub-micrometer spheres of poly(glycidyl methacrylate) (PGMA) with a layer of poly(allylamine hydrochloride) (PAH) film are prepared by an easily controlled assembly method. The gold nanoparticles (Au NPs) exhibit a discontinuous structure on the PGMA@PAH particle surface, exhibiting a surface interaction between the PGMA spheres and the Au NPs. PAH...
A small external magnetic field of 0.072 T was reported to significantly influence the specific capacitances of the supercapacitor with magnetic carbon - metal (iron, cobalt or nickel) oxides microtubular nanocomposite fabrics as flexible electrodes. The decorated metal oxide species and annealing method (microwave-assisted vs. conventional tubular...
The nano-catalysts of PdxNiy, bimetallic nanoparticles (NPs, the nominal atomic ratios of Pd to Ni are 2:1, 3:2 and 1:1) supported on multi-walled carbon nanotubes (MWCNTs) (denoted as PdxNiy/MWCNTs) have been synthesized by a thermal decomposition process using room temperature ionic liquids (RTILs) of N-butylpyridinium tetrafluoroborate (BPyBP4)...
In this work, multi-walled carbon nanotubes (MWCNTs) were used as the reducing agents to prepare PtxSny composite nanoparticles by a pyrolysis process, in which the nominal atomic ratios of Pt to Sn were 0.5:1, 1:1, 2:1, 2.5:1 and 3:1, respectively. X-ray diffraction (XRD), energy dispersive X-ray spectrum (EDX) and transmission electron microscopy...
Multi-walled carbon nanotubes (MWNTs)-supported palladium (Pd) nanoparticles (NPs) catalyst (Pd/MWNTs) for methanol oxidation was prepared by a novel one-pot bottom-up method, i.e., direct reduction of palladium acetylacetonate (Pd(AcAc) 2 ) in the refluxing xylene solution in the presence of carboxylic groups functionalized MWNTs without any assis...
Conductive elastomeric polyurethane (PU) nanocomposites reinforced with multiwall carbon nanotubes (MWCNTs) for the applications of strain sensor purpose have been synthesized via an in situ surface-initiated-polymerization (SIP) method. The morphology of the nanocomposites with a variety of loadings of MWCNTs was investigated by scanning electron...
We have demonstrated that magnetic carbon nanocomposite fabrics prepared by microwave assisted heating are advanced adsorbents in the removal of Cr(VI) with a much higher removal capacity of 3.74 mg g−1 compared to 0.32 mg g−1 for cotton fabrics and 0.46 mg g−1 for carbon fabrics. The enhanced Cr(VI) removal is attributed to the highly porous struc...
