Bao-Lian Su

Wuhan University of Technology, Wu-han-shih, Hubei, China

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Publications (268)

  • [Show abstract] [Hide abstract] ABSTRACT: Three dimensionally ordered macroporous inverse opal TiO2 nanocomposites decorated by ZnO quantum dots (ZnO QDs@3DOM TiO2) with an intimate contact were successfully synthesized using the sol-gel technique and characterized in terms of structure, porosity, chemical composition and optical properties. The photocatalytic activity of ZnO QDs@3DOM TiO2 nanocomposites with different ZnO QDs amounts was evaluated in the aqueous phase of dye pollutant molecules and compared with the state-of-the-art 3DOM TiO2 and P25 photocatalysts. The symbiotic effect of ZnO QDs and 3DOM photonic structure on the light absorption and further on the photocatalytic activity of the nanocomposites was observed. The sample with the highest ZnO QDs amount exhibits extraordinarily high photocatalytic activity, which is attributed to firstly, the formation of an intimate junction between the two semiconductors, hence favoring the separation of photo-introduced electron–hole pairs in ZnO-TiO2 photocatalyst, and, secondly, to the quantum size effect (QSE). The QSE results in an increase in the width of the forbidden electronic band, which increases the energy of electrons (holes) in the conduction (valence) and particularly leads to the displacement of the conduction band potentials of ZnO to more negative energy values compared to TiO2. Thanks to the heterojuction formed between ZnO QDs and 3DOM TiO2, the energy difference between conduction bands of both semiconductors acts as a driving force for rapid electron/hole transfer between the coupled materials. Due to the extremely short diffusion time, the lifetime of photogenerated charge carriers is extended and the effectiveness of reduction and oxidation process is increased with faster reaction kinetics. Increasing the amount of ZnO QDs can boost the photocatalytic activity. On the other hand, 3DOM photonic structure of TiO2 with its open meso-macroporosity can facilite the diffusion of dye molecules and light propagation. This first successful example of symbiose of a series of physical effects can open a new window for solar energy conversion by the synergitic association of QSEs, photonic effect and other effects such as plasmonic effects, in one solid material to develop highly efficient solar light havesting system to enhance solar energy conversion effeciency for photocatalysis and photovoltaics.
    Article · Dec 2016
  • Xiao-Yu Yang · Li-Hua Chen · Yu Li · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: Owing to their immense potential in energy conversion and storage, catalysis, photocatalysis, adsorption, separation and life science applications, significant interest has been devoted to the design and synthesis of hierarchically porous materials. The hierarchy of materials on porosity, structural, morphological, and component levels is key for high performance in all kinds of applications. Synthesis and applications of hierarchically structured porous materials have become a rapidly evolving field of current interest. A large series of synthesis methods have been developed. This review addresses recent advances made in studies of this topic. After identifying the advantages and problems of natural hierarchically porous materials, synthetic hierarchically porous materials are presented. The synthesis strategies used to prepare hierarchically porous materials are first introduced and the features of synthesis and the resulting structures are presented using a series of examples. These involve templating methods (surfactant templating, nanocasting, macroporous polymer templating, colloidal crystal templating and bioinspired process, i.e. biotemplating), conventional techniques (supercritical fluids, emulsion, freeze-drying, breath figures, selective leaching, phase separation, zeolitization process, and replication) and basic methods (sol-gel controlling and post-treatment), as well as self-formation phenomenon of porous hierarchy. A series of detailed examples are given to show methods for the synthesis of hierarchically porous structures with various chemical compositions (dual porosities: micro-micropores, micro-mesopores, micro-macropores, meso-mesopores, meso-macropores, multiple porosities: micro-meso-macropores and meso-meso-macropores). We hope that this review will be helpful for those entering the field and also for those in the field who want quick access to helpful reference information about the synthesis of new hierarchically porous materials and methods to control their structure and morphology.
    Article · Dec 2016 · Chemical Society Reviews
  • Shao-Zhuan Huang · Qian Zhang · Wenbei Yu · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: To develop high-performance anode materials of lithium ion batteries (LIBs) for practical high energy application, a grain boundaries enriched hierarchically mesoporous MnO/C microsphere composite has been fabricated by an in-situ carbonization process. The mesoporous MnO/C microsphere is constructed by abundant grains and grain boundaries that are uniformly embedded in a carbon matrix. Such unique nanoarchitecture exhibits high tap density and structural stability, and provides 3D continuous transport pathways for electrons and Li-ions, enabling high electrochemical stability and improved lithium storage kinetics. As a consequence, the mesoporous MnO/C electrode delivers ever-increasing specific capacity (1200 mAh g⁻¹ after 100 cycles at 100 mA g⁻¹) and excellent rate capability (588 mAh g⁻¹ at 2 A g⁻¹). Such superior lithium storage performance suggests that the hierarchically mesoporous MnO/C microsphere electrode should be one of the most promising anode materials for electric vehicle and grid energy storage application.
    Article · Nov 2016
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    Yu Li · Jun Jin · Xiao-Ning Ren · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: Hierarchically porous TiO2/carbon hollow spheres (TiO2/C-HS) have been designed and prepared through a facile one-pot template-free hydrothermal route using sucrose as carbon source, TiO2 solid spheres as TiO2 source and NH4F as structure-directing reagent. The nanocrystal constructed hierarchically porous hollow spherical structure offers enough space for electrolyte penetration and storage and short path length for Li+ diffusion and e- transport. The carbon layer on TiO2 surface improves its conductivity as well as the structure stability. As a result, such special hollow structure with carbon layers exhibits enhanced lithium storage properties comparing with the solid spheres. The TiO2/C-HS anode exhibits discharge capacities of 286, 235, 197, 164 and 127 mAh g-1 at various rates of 0.2, 0.5, 1, 2 and 5 C (1 C=168 mA g-1 ), respectively. A capacity of 175 mAh g-1 is still remained after 200 cycles at 1C, demonstrating a very high lithium insertion coefficient of 0.52, a little higher than the theoretical value of 0.5. The SEM, TEM, HRTEM and electrochemical impedance spectra (EIS) techniques have been utilized to understand the Li+ insertion process and structural stability. Our results reveal that the high electrochemical performance of the TiO2/C-HS anode can be attributed to the synergy of hierarchically porous hollow structure, carbon layer and newly formed numerous ~5 nm Li2Ti2O4 on the surface of the TiO2 nanocrystals.
    Full-text available · Article · Jul 2016 · RSC Advances
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    Dan Liu · Chao Zeng · Deyu Qu · [...] · Deyang Qu
    [Show abstract] [Hide abstract] ABSTRACT: Nitrogen-doped ordered mesoporous carbons (OMCs) have been synthesized via aqueous cooperative assembly route in the presence of basic amino acids as either polymerization catalysts or nitrogen dopants. This method allows the large-scale production of nitrogen-doped OMCs with tunable composition, structure and morphology while maintaining highly ordered mesostructures. For instances, the nitrogen content can be varied from ∼1 wt% to ∼6.3 wt% and the mesophase can be either 3-D body-centered cubic or 2-D hexagonal. The specific surface area for typical OMCs is around 600 m2 g−1, and further KOH activation can significantly enhance the surface area to 1866 m2 g−1 without destroying the ordered mesostructures. Benefiting from hierarchically ordered porous structure, nitrogen-doping effect and large-scale production availability, the synthesized OMCs show a great potential towards supercapacitor application. When measured in a symmetrical two-electrode configuration with an areal mass loading of ∼3 mg cm−2, the activated OMC exhibits high capacitance (186 F g−1 at 0.25 A g−1) and good rate capability (75% capacity retention at 20 A g−1) in ionic liquid electrolyte. Even as the mass loading is up to ∼12 mg cm−2, the OMC electrode still yields a specific capacitance of 126 F g−1 at 20 A g−1.
    Full-text available · Article · Jul 2016 · Journal of Power Sources
  • Ming-Hui Sun · Shao-Zhuan Huang · Li-Hua Chen · [...] · Bao-Lian Su
    Article · Jul 2016 · ChemInform
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    Yu Li · Min Yan · Yang Zhang · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: Lithium-sulfur (Li-S) batteries are receiving significant attention as an alternative power system for advanced electronic devices because of their high theoretical capacity and energy density. In this work, we have designed manganese dioxide (MnO2) nanosheets functionalized sulfur@poly(3,4-ethylenedioxythiophene) core-shell nanospheres (S@PEDOT/MnO2) for high performance lithium-sulfur (Li-S) batteries. The PEDOT layer is used to address the low electrical conductivity of sulfur and acts as protective layer to prevent dissolution of polysulfides. The MnO2 nanosheets functionalizing on PEDOT further provide high active contact area to enhance the wettability of the electrode materials by electrolyte and further interlink the polymer chains to improve the conductivity and stability of the composite. As a result, S@PEDOT/MnO2 exhibits an improved capacity of 827 mAh g-1 after 200 cycles at 0.2 C (1C=1673 mA g-1), a further ~50% enhancement comparing to S@PEDOT (551 mAh g-1) without MnO2 functionalization. In particular, the discharge capacity of S@PEDOT/MnO2 is 545 mAh g-1 after 200 cycles at 0.5 C. Our demonstration here indicates that the functionalization of inorganic nanostructures on conducting polymer coated sulfur nanoparticles is an effective strategy to improve the electrochemical cycling performance and stability of sulfur cathodes for Li-S batteries.
    Full-text available · Article · Jun 2016 · Journal of Materials Chemistry A
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    Ming-Hui Sun · Shao-Zhuan Huang · Li-Hua Chen · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: Over the last decade, significant effort has been devoted to the applications of hierarchically structured porous materials owing to their outstanding properties such as high surface area, excellent accessibility to active sites, and enhanced mass transport and diffusion. The hierarchy of porosity, structural, morphological and component levels in these materials is key for their high performance in all kinds of applications. The introduction of hierarchical porosity into materials has led to a significant improvement in the performance of materials. Herein, recent progress in the applications of hierarchically structured porous materials from energy conversion and storage, catalysis, photocatalysis, adsorption, separation, and sensing to biomedicine is reviewed. Their potential future applications are also highlighted. We particularly dwell on the relationship between hierarchically porous structures and properties, with examples of each type of hierarchically structured porous material according to its chemical composition and physical characteristics. The present review aims to open up a new avenue to guide the readers to quickly obtain in-depth knowledge of applications of hierarchically porous materials and to have a good idea about selecting and designing suitable hierarchically porous materials for a specific application. In addition to focusing on the applications of hierarchically porous materials, this comprehensive review could stimulate researchers to synthesize new advanced hierarchically porous solids.
    Full-text available · Article · Jun 2016 · Chemical Society Reviews
  • [Show abstract] [Hide abstract] ABSTRACT: Photonic structures encased by a permeable envelope give rise to iridescent blue color in the scales covering the male Hoplia coerulea beetle. This structure comprises a periodic porous multilayer. The color of these scales is known for changing from blue to green upon contact with water despite the presence of the envelope. This optical system has been referred to as a photonic cell due to the role of the envelope that mediates fluid exchanges with the surrounding environment. Following from previously studied liquid-induced changes in the color appearance of H. coerulea, we measured vapor-induced color changes in its appearance. This response to vapor exposure was marked by reflectance redshift and an increase in peak reflectance intensity. Different physico-chemical processes were investigated to explain the increase in reflectance intensity, a property not usually associated with vapor-induced optical signature changes. These simulations indicated the optical response arose from physisorption of a liquid film on the beetle scales followed by liquid penetration through the envelope and the filling of micropores within the body of the photonic structure.
    Article · May 2016 · Optics Express
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    Jie Ying · Zhi-Yi Hu · Xiao-Yu Yang · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: A facile high-viscosity-solvent method is presented to synthesize PtPd bimetallic nanocrystals highly dispersed in different mesostructures (2D and 3D structures), porosities (large and small pore sizes), and compositions (silica and carbon). Further, highly catalytic activity, stability and durability of the nanometals have been proven in different catalytic reactions.
    Full-text available · Article · May 2016 · Chemical Communications
  • Qian Zhang · Shao-Zhuan Huang · Jun Jin · [...] · Bao-Lian Su
    File available · Data · May 2016
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    Qian Zhang · Shao-Zhuan Huang · Jun Jin · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: A highly crystalline three dimensional (3D) bicontinuous hierarchically macro-mesoporous LiFePO4/C nanocomposite constructed by nanoparticles in the range of 50~100 nm via a rapid microwave assisted solvothermal process followed by carbon coating have been synthesized as cathode material for high performance lithium-ion batteries. The abundant 3D macropores allow better penetration of electrolyte to promote Li+ diffusion, the mesopores provide more electrochemical reaction sites and the carbon layers outside LiFePO4 nanoparticles increase the electrical conductivity, thus ultimately facilitating reverse reaction of Fe3+ to Fe2+ and alleviating electrode polarization. In addition, the particle size in nanoscale can provide short diffusion lengths for the Li+ intercalation-deintercalation. As a result, the 3D macro-mesoporous nanosized LiFePO4/C electrode exhibits excellent rate capability (129.1 mA h/g at 2 C; 110.9 mA h/g at 10 C) and cycling stability (87.2 % capacity retention at 2 C after 1000 cycles, 76.3% at 5 C after 500 cycles and 87.8% at 10 C after 500 cycles, respectively), which are much better than many reported LiFePO4/C structures. Our demonstration here offers the opportunity to develop nanoscaled hierarchically porous LiFePO4/C structures for high performance lithium-ion batteries through microwave assisted solvothermal method.
    Full-text available · Article · May 2016 · Scientific Reports
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    Heng Zhao · Min Wu · Jing Liu · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: A ternary photocatalyst TiO2-Au-CdS based on three-dimensionally ordered macroporous TiO2 (3DOM TiO2) was successfully prepared to enhance the light absorption, extend the light responsive region, reduce the recombination rate of charge carriers and promote the efficiency of water splitting H2 evolution ultimately. The obtained 3DOM TiO2-Au-CdS powder has a pure anatase phase of TiO2 and greenockite structured CdS according to the XRD results and TEM analysis. Au nanoparticles (AuNPs) and CdS were evenly distributed in the 3DOM structure which enhances H2-generation rate under visible light by improving light harvesting and utilizing its mass transfer facilitation. As a result, the hydrogen generation rate (1.81 mmol h−1 g−1) using 3DOM TiO2-Au-CdS photocatalyst under visible light irradiation was 13-fold higher than the binary 3DOM TiO2-CdS reference photocatalyst. Under ultraviolet-visible light, the photogenerated electrons in TiO2 would be transferred to recombine with the holes of CdS and under visible light, electrons would move to the conduction band (CB) of TiO2 from CdS via AuNPs. The two different types of internal electron-transfer process in the ternary photocatalyst under ultraviolet and visible light were proposed respectively and both would efficiently reduce the recombination rate of photogenerated electrons and holes thus stimulate H2 evolution rate. The present work demonstrated an excellent example of the synergistic effect of the light absorption enhancement by 3DOM structure, the photosensitizing and electron reservoir effect of AuNPs and the reduction of recombination rate of charge carriers by CdS to highly promote the photocatalytic activity in water splitting reaction.
    Full-text available · Article · May 2016 · Applied Catalysis B Environmental
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    [Show abstract] [Hide abstract] ABSTRACT: Porous TiO2 urchins have been synthesized by a hydrothermal route using TiO2/oleylamine as precursors with subsequent ion-exchange and calcination. The resultant material consists of porous spherical cores and nanochains-constructed shells with straight channels. Electrochemical measurements indicate the TiO2 urchins deliver superior lithium storage capability in terms of high capacity (206.2 mA h g−1 at 0.5C), superior rate performance (94.4 mA h g−1 at 20C) and stable cycling stability (94.3% capacity retention over 1000 cycles at 10C versus the third cycle). Such performance enhancement is mainly due to the increased electrode/electrolyte contact interface, reduced Li+ diffusion pathways and improved mass transfer of electrolyte in the unique 3D interconnected hierarchical network. In addition, ex-situ XRD, SEM and TEM analyses further reveal high structure integrity of the porous TiO2 urchins during the electrochemical lithiation, leading to enhanced lithium storage stability. Moreover, we detected that some anatase nanocrystals evolved into electrochemically inactive Li1TiO2 dots (∼10 nm in size) during long-term electrochemical cycling. Our findings provide more insights for better understanding of the structure evolution and capacity decay mechanism in porous TiO2 nanostructures.
    Full-text available · Article · May 2016
  • Yann Garcia · Bao-Lian Su
    Article · May 2016
  • Yu Li · Shaozhuan Huang · Yi Cai · [...] · Bao-Lian Su
    Data · Mar 2016
  • Yu Li · Shaozhuan Huang · Yi Cai · [...] · Bao-Lian Su
    Data · Mar 2016
  • Jing Liu · Huawen Huang · Heng Zhao · [...] · Bao-Lian Su
    Data · Mar 2016
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    Jing Liu · Huawen Huang · Heng Zhao · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: Three-dimensional (3D) macro-mesoporous structures demonstrate effective performance for gas sensing. In this work, we have designed and successfully prepared aperture controllable three-dimensional interconnected macro-mesoporous ZnO (3D-IMM-ZnO) nanostructures by template-based layer-by-layer filtration deposition. XRD, SEM and TEM have been used to characterize the obtained hexagonal wurzite 3D-IMM-ZnO nanostructures. Owing to its special 3D interconnected hierarchically porous structure, the 3D-IMM-ZnO nanostructures exhibit excellent gas sensing performances towards acetone and methanol. The 3D-IMM-ZnO nanostructure with the largest macropore demonstrates the best gas sensitivity owing to its largest cavity providing enough space for gas diffusion. On the basis of the results and analyses, we propose that the synergistic effect of electron-liberation and electron density of acetone, and the special structure makes the 3D-IMM-ZnO nanostructures demonstrate better gas sensing properties than many other porous ZnO nanostructures and preferred selectivity to acetone.
    Full-text available · Article · Mar 2016 · ACS Applied Materials & Interfaces
  • Bo-Bo Zhang · Li Wang · Valerie Charles · [...] · Bao-Lian Su
    [Show abstract] [Hide abstract] ABSTRACT: Relying on photosynthesis, hybrid beads entrapped the microalgae Chlamydomonas reinhardtii are synthesized for sustainable production of high value metabolites. Encapsulating the microalgae requires an exquisite control of material properties, which has been achieved by modification of different composition (alginate, polycation and silica). A coating of PDADMAC avoided cell leaking indicated by OD750 value of the culture medium and the homogeneous distribution of silica prevented bead shrinkage from the strong electronic force of PDADMAC, resulting in a robust and biocompatible matrix for the cells. Besides fabricating suitable porous beads for the diffusion of expected metabolites, the permeability can be controlled in a certain degree by applying different molecular weights of PDADMAC. The hybrid Alginate+Silica/CaCl2+PDADMAC beads possessed sufficient mechanical rigidity to sheer force under constant stirring and good chemical stability to chelating agent such as sodium citrate. Moreover, the encapsulated cells exhibited excellent long-term viability and cellular functionality, which remained about 81.5% of the original value after 120-days’ encapsulation by microscopy observation and oximetry measurement. This study is not only significant for understanding the critical role of polycation and silica involved in the synthesis of hybrid beads, but also important for the real-scale bioengineering applications.
    Article · Mar 2016 · ACS Applied Materials & Interfaces

Publication Stats

7k Citations

Institutions

  • 2015
    • Wuhan University of Technology
      • State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
      Wu-han-shih, Hubei, China
  • 1997-2014
    • University of Namur
      • Department of Biology
      Namen, Walloon, Belgium
  • 2010-2011
    • Notre Dame de Namur University
      Indiana, United States