Yongfeng Luo

Yongfeng Luo
Central South University of Forestry and Technology | CSUFT · College of Science

Professor

About

61
Publications
6,691
Reads
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2,002
Citations
Additional affiliations
December 2018 - present
Central South University of Forestry and Technology
Position
  • Professor
December 2012 - August 2015
Fudan University
Position
  • PostDoc Position
November 2010 - November 2018
Central South University of Forestry and Technology
Position
  • Professor (Associate)
Education
September 2008 - June 2012
Central South University
Field of study
  • Materials science
September 2002 - June 2005
Nankai University
Field of study
  • Condensed matter physics
September 1995 - June 1999
Hunan Normal University
Field of study
  • Physics

Publications

Publications (61)
Article
Full-text available
A natural amino acid-doped polyaniline nanostructure was prepared by a simple in situ chemical polymerization method in an aqueous medium. The structure and morphology of composite material were characterized by FESEM, TEM, FT-IR, and XRD. The results showed that the product possesses a large aspect ratio and a hollow tubular morphology. As-synthes...
Article
Wood with vertically aligned tracheids has many potential applications in energy storage. Carbonized wood inherits the previous tracheid structure and has good electrical conductivity, which provides favorable conditions for its application in self-supporting electrodes of supercapacitors. However, problems such as low specific surface area, low sp...
Article
In this paper, a novel type of electrode material for high-performance hybrid supercapacitors is designed. The electrode mainly uses nitrogen-doped atoms to anchor the nickel-cobalt layered double hydroxide on the inner wall of wood-derived carbon tracheids from Chinese fir wood scraps. The specific capacity of the composite single electrode is 14....
Article
Metal-organic framework (MOF) derived carbon based nanocatalysts has been widely used in the environmental field due to high porosity, rich structural diversity/adjustability, and controllable chemical compositions. However, a suitable carrier is very necessary for solving the issues of aggregation and recovery of nanoparticles. Here, waste biomass...
Article
Full-text available
Optimizing electrode materials performance and improving the energy density of supercapacitors is a hot research topic. The complex hollow sphere structure material, as a supercapacitor electrode material, provides more redox active sites and volume expansion space during the electrochemical energy storage process, which has the potential to assemb...
Article
Full-text available
Carbonized and activated wood scraps are appealing scaffolds to host active materials for supercapacitors, which can realize the waste into treasure. However, the active material loaded on the inner wall of the wood tracheid is easily peeled off, resulting in poor cycle stability of the capacitor and low energy density. Here, we designed a novel co...
Article
Full-text available
The development of self-supporting high-efficiency catalysts is a major challenge for the efficient production of H2 via water splitting. In this manuscript, a freestanding Ni2P-Ni12P5/carbonized wood (CW) composite electrode was prepared by a simple hydrothermal method and high-temperature calcination using pine wood with uniform channel as suppor...
Article
Lenvatinib (LEN), sorafenib (SOR) and sunitinib (SUN) are drugs targeting vascular endothelial growth factor receptor 2 (VEGFR2). Despite sharing similar chemical structures and bioactivities, LEN and SOR bind to different functional states of VEGFR2, viz. DFG‐in and DFG‐out state, respectively. SUN binds to the DFG‐out state of VEGFR2 just like SO...
Article
We theoretically propose a feasible scheme to advance or slow the propagation of light in a monolayer MoS2 nanoresonator (NR). The scheme allows one to easily turn on or off the fast (superluminal) and slow (subluminal) light effects and switch freely between fast and slow light propagation by only adjusting the frequency or intensity of the pump f...
Article
Conductive polymers implemented in fibrous energy devices have drawn considerable attention because of their economic importance, good environmental stability, and electrical conductivity. Conductive polymers demonstrate interesting mechanical, electronic, and optical properties, controllable chemical and electrochemical behavior, and facile proces...
Article
The temperature distribution within wood samples during microwave drying is significantly influenced by the dimensions of the wood sample, microwave frequency, heating time and moisture content of the wood. Here, the temperature distribution inside the wood during microwave drying has been studied by finite element analysis in a three-port feeding...
Article
Uniform discrete mesoporous titania microspheres have been synthesized via a facile and controllable interface-directed co-assembly approach by using 3-dimensional macroporous carbon (3DOMC) as the nanoreactor for the confined co-assembly of template molecules and titania source. By adjusting the synthesis parameters, hollow mesoporous microspheres...
Article
It is critical but remains challenging to make fiber-shaped energy storage systems to satisfy the rapidly developing area of flexible and wearable electronics due to the difficulty in finding high-performance fiber electrodes. Herein, we designed a one-step hydrothermal strategy to synthesize graphene/(molybdenum disulfide) hybrid fiber electrodes...
Article
Full-text available
Unprecedented olive-shaped mesoporous TiO2 mesocrystals (FUD-19) self-organized by ultrathin flake-like anatase nanocrystals show remarkable crystallite-interface reactivity and high photoconversion efficiency.
Article
Full-text available
An aligned carbon nanotube/MoS2 nanosheet hybrid fiber is synthesized to display combined remarkable mechanical, electronic and electrochemical properties. It is used to fabricate flexible fibrous supercapacitors and lithium-ion batteries with high specific capacitance of 135 F cm-3 and high specific capacity of 1298 mAh g-1, respectively.
Article
Full-text available
A fiber-shaped polymer light-emitting electrochemical cell (PLEC) is developed by sandwiching the electroluminescent polymer layer between two aligned carbon nanotube (CNT) sheet electrodes. Similar to the conventional planar PLEC, the electroluminescent polymer layer and two carbon nanotube electrodes are closely and stably contacted, so the injec...
Article
The emergence of wearable electronics and optoelectronics requires the development of devices that are not only highly flexible but can also be woven into textiles to offer a truly integrated solution. Here, we report a colour-tunable, weavable fibre-shaped polymer light-emitting electrochemical cell (PLEC). The fibre-shaped PLEC is fabricated usin...
Article
Full-text available
Lithium batteries with high safety, long cycle life, and high rate performance are very important for their applications. The applicable research progress of carbon nanotubes in lithium-ion battery is described in “Progress in application of CNTs in lithium-ion batteries,” and its future development is put forward from its two aspects of being not...
Article
Wood pretreated by high-intensity microwaves was theoretically studied based on the Maxwell electromagnetic field equations and the heat and mass transfer mechanism of wood. The effects of feeding modes on the temperature field uniformity and energy efficiency were studied using the finite element method, and optimized parameters of the rectangular...
Article
Electrically conducting wires play a critical role in the advancement of modern electronics and in particular are an important key to the development of next-generation wearable microelectronics. However, the thin conducting wires can easily break during use, and the whole device fails to function as a result. Herein, a new family of high-performan...
Article
Electrically conducting wires play a critical role in the advancement of modern electronics and in particular are an important key to the development of next-generation wearable microelectronics. However, the thin conducting wires can easily break during use, and the whole device fails to function as a result. Herein, a new family of high-performan...
Article
Full-text available
Cellulose widely exists in plant tissues. Due to the large pores between the cellulose units, the regular paper is nontransparent that cannot be used in the optoelectronic devices. But some chemical and physical methods such as 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidation can be used to improve the pores scale between the cellulos...
Article
Full-text available
This review summarizes recent studies on carbon nanotube (CNT) fibers for weavable device of optoelectric conversion and energy storage. The intrinsic properties of individual CNTs make the CNT fibers ideal candidates for optoelectric conversion and energy storage. Many potential applications such as solar cell, supercapacitor, and lithium ion batt...
Article
Full-text available
Modifying wood by high intensive microwave pretreatment method is widely researched for the fabrication of wood-based nanocomposites, but the temperature uniformity and energy efficiency of microwave pretreatment have not reached the ideal state. In this study, the pretreated wood in rectangular cavity by high intensive microwave is theoretically s...
Article
Full-text available
Pressure impregnation pretreatment is a conventional method to fabricate wood-based nanocomposites. In this paper, the wood-based luminescent nanocomposites were fabricated with the method and its spectral properties were investigated. The results show that it is feasible to fabricate wood-based luminescent nanocomposites using microwave modified w...
Article
A core-sheath carbon nanostructured fiber is prepared through a simple solution approach as demonstrated on page 1694 by H. Peng and co-workers. Benefitting from the synergetic interaction between the graphene-contained carbonaceous sheath as well as the twisted carbon nanotube fiber core, the composite fiber is integrated with both high electrical...
Article
A novel core‐sheath carbon nanostructured fiber is created with high tensile strength, electrical conductivity, and electrocatalytic activity. In particular, the designed ribbon‐like nanostructure on the outer surface favors the attachment and impregnation of a second functional phase that is critical for electronic devices. As a demonstration, nov...
Article
An all-solid-state, coaxial and self-powered "energy fiber" is demonstrated that simultaneously converts solar energy to electric energy and further stores it. The "energy fiber" is flexible and can be scaled up for the practical application by the well-developed textile technology, and may open a new avenue to future photoelectronics and electroni...
Article
Ballistic thermal transport properties in Y-branch three-terminal and H-branch four-terminal graphene junctions are systematically investigated by using nonequilibrium Green’s function method. A comparative analysis for the Y-branch and H-branch quantum structure models is made. The results show that the increased junction in H-branch four-terminal...
Article
Wired for light: Novel wire-shaped photovoltaic devices have been developed from graphene/Pt composite fibers. The high flexibility, mechanical strength, and electrical conductivity of graphene composite fibers resulted in a maximum energy conversion efficiency of 8.45 %, which is much higher than that of other wire-shaped photovoltaic devices.
Article
Full-text available
To open the end of carbon nanotubes and make these ends connect with functional carboxyl group, aligned carbon nanotubes (CNTs) arrays was etched by DC glow oxygen-argon plasma. With these open-ended carbon nanotubes array as electrode materials to build supercapacitor, we found that the capacity (32.2 F/g) increased significantly than that of pure...
Article
Full-text available
Superhydrophobic hydroxide zinc carbonate (HZC) films were fabricated on aluminum substrate through a convenient in situ deposition process. Firstly, HZC films with different morphologies were deposited on aluminum substrates through immersing the aluminum ...
Article
Full-text available
High intensive microwave pretreatment is a new method to modify wood for the fabrication of wood-based nanocomposites. Based on the physical law on heat transfer, a mathematical model to describe the temperature profiles within wood heated by high intensive microwave was established and simulated in this research. The results showed that the temper...
Article
High-quality carbon nanotube (CNT) arrays have been synthesized through a chemical vapor deposition process. The Fe/Al2O3 on silicon was used as the catalyst, ethylene as the carbon source, and a mixture gas of Ar and H-2 gases as the carrying gas. With spinnable CNT arrary as initial materials, aligned carbon nanotube fibers were continuously fabr...
Article
An all-solid-state and integrated device in which photoelectric conversion and energy storage are simultaneously realized has been developed from free-standing and aligned carbon nanotube films or carbon nanotube–polyaniline composite films. Due to the aligned structure and excellent electronic property of the film electrode, the integrated device...
Article
Due to the unique structure and excellent properties, carbon nanotubes (CNTs) have been widely proposed as electrode materials. However, the CNTs typically appear in a format of networks in which charges have to hop through a lot of boundaries with low efficiency. Here we have described a pressing method to produce penetrated and aligned CNT films...
Article
Carbon nanotubes (CNTs) have been recently fabricated into macroscopic films to improve their practical applications in a wide variety of fields, e.g. electrode materials. In the current CNT electrodes however, CNTs are typically interconnected to form networks or are aligned as lots of bundles, and the resulting photovoltaic devices based on the C...
Article
Full-text available
Long and high-quality carbon nanotube (CNT) arrays have been synthesized through a chemical vapor deposition process. The Fe/Al2O3 on silicon was used as the catalyst, ethylene as the carbon source, and a gas mixture of Ar and H2 gases as the carrying gas. It is found for the first time that the high-quality and superlong carbon nanotube array can...
Article
In this paper, we propose a structure formed by two subwavelength holes fabricated in a metal film to realize directional excitation of surface plasmon polaritons (SPPs). The holes are employed as SPP sources, and the relative phase of SPPs generated at the hole exit end can be adjusted by changing the dielectric material filled in holes. Using the...
Article
A facial chemical etching method was developed for fabricating stable super-hydrophobic surfaces on aluminum alloy foils. The microstructure and wettability of super-hydrophobic surfaces were characterized by scanning electron microscopy, water contact angle (CA) measurement, and optical methods. The surfaces of the modified aluminum alloy substrat...
Article
We investigate ballistic thermal transport property in quantum wire modulated with trapeziform quantum structures at low temperatures. A comparative analysis for two different trapeziform quantum structure models is made. It is found that the transmission probability and thermal conductance sensitively depend on the figure of the quantum scattering...
Article
In this paper, we propose a plasmonic coupler which is composed of a nanoslit with a bump. The slit is used to generate surface plasmon polariton (SPP), and the bump is employed as a SPP reflector. It is found that the phase difference between the SPP propagating the opposite direction to the bump and the one reflected by the bump can be periodical...
Article
Long and spinnable carbon nanotube (CNT) arrays have been synthesized through a chemical vapor deposition process using the Fe/Al2O3 on a silicon substrate as the catalyst, ethylene as the carbon source, and an Ar/H2 mixture gas as the carrying gas. CNT fibers are then spun from the high-quality arrays with excellent mechanical and electrical prope...
Article
We have investigated the effect of the coupling of localized surface plasmon (LSP) on the transmission properties of a compound structure with metallic particle and hole arrays. It is found that the variation in longitudinal interval G between particle and hole arrays leads to the shift in transmission peak and the new transmission peak, which are...
Article
The transmission characteristics of a metallic slit with a bar are investigated by using the two-dimensional finite difference time-domain method. It is found that the introduction of a bar enriches the transmission spectrum. As the bar locates at the center of the electric (magnetic) field antinodes, the transmission peaks have longer (shorter) wa...
Article
In this paper, we have proposed a plasmonic splitter which is composed of a subwavelength slit and two different metal-insulator-metal (MIM) waveguides with periodic grooves. The slit is used to excite surface plasmon polaritons (SPPs) at certain wavelengths. By setting the SPPs resonance wavelengths of the slit as the Bragg wavelengths of MIM wave...
Article
The transmission characteristics of metallic film perforated with an array of asymmetric cross-shaped hole are studied by using the three-dimensional finite difference time-domain method. We find that the wavelengths and intensities of transmission peaks depend strongly on the asymmetric parameters of the cross-shaped hole. The transmission peaks i...
Article
Employing the transfer matrix method, we investigate the property of the interface optical-phonon modes (IOPMs) in a finite superlattice with a cap layer and a structural defect layer in the dielectric continuum approximation. In the present structure, there exist two types of defect IOPMs: localized modes and surface modes. The evolution of extend...
Article
We reported the periodic poling (PP) MgO-doped (6.5 mol%) congruent LiNbO3 (MgO:LN) and its operation in a femtosecond second-harmonic generation at room temperature. Because the switching field of MgO:LN is ∼5 kV/mm, which is approximately one fourth that of the congruent LN field, PP of thicker MgO:LN wafer was performed by means of applying exte...

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