A5100762126- Electrocatalysts for Energy Conversion
- Fuel Cells and Related Materials
- Advanced battery technologies research
- CO2 Reduction Techniques and Catalysts
- Catalysis for Biomass Conversion
- Ammonia Synthesis and Nitrogen Reduction
- Electrochemical Analysis and Applications
- Conducting polymers and applications
- Catalytic Processes in Materials Science
- Catalysis and Hydrodesulfurization Studies
- Advanced Photocatalysis Techniques
- Supercapacitor Materials and Fabrication
- Ionic liquids properties and applications
- Caching and Content Delivery
- Optical Network Technologies
- Catalysis and Oxidation Reactions
- Photonic Crystal and Fiber Optics
- Catalysts for Methane Reforming
- Pharmaceutical and Antibiotic Environmental Impacts
- Advanced oxidation water treatment
- Hydrogen Storage and Materials
- Electrochemical sensors and biosensors
- Semiconductor materials and devices
- Carbon Nanotubes in Composites
- Nanomaterials for catalytic reactions
Hong Kong Jockey Club
2023-2025
Chinese University of Hong Kong
2023-2025
Chinese University of Hong Kong, Shenzhen
2024-2025
ShanghaiTech University
2025
Iowa State University
2015-2024
Shanghai University of Medicine and Health Sciences
2024
Huazhong University of Science and Technology
2023-2024
Wuhan National Laboratory for Optoelectronics
2023-2024
Bissell (United States)
2017-2023
Sichuan University
2018-2023
Multiwalled carbon nanotube-supported Pt (Pt/MWNT) nanocomposites were prepared by both the aqueous solution reduction of a salt (HCHO reduction) and ion in ethylene glycol solution. For comparison, Pt/XC-72 nanocomposite was also EG method. The Pt/MWNT catalyst method has high homogeneous dispersion spherical metal particles with narrow particle-size distribution. TEM images show that particle size is range 2−5 nm peak at 2.6 nm, which consistent 2.5 obtained from XRD broadening...
Staying power: A new class of cathode catalysts based on supportless Pt (see picture, left) and PtPd nanotubes (NTs) is introduced. These materials have remarkable durability (right; CV=cyclic voltammetry, ECSA=electrochemical surface area) high catalytic activity. They the potential to circumvent most degradation pathways current Pt/C Pt-black catalysts. Supporting information for this article available WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z700894_s.pdf or from author....
Activities of Cu nanoparticles supported on carbon black (VC), single-wall nanotubes (SWNTs), and Ketjen Black (KB) toward CO2 electroreduction to hydrocarbons (CH4, C2H2, C2H4, C2H6) are evaluated using a sealed rotating disk electrode (RDE) setup coupled gas chromatograph (GC). Thin films catalysts deposited RDE tips following procedure well-established in the fuel cell community. Lead (Pb) underpotential deposition (UPD) is used determine electrochemical surface area (ECSA) thin 40 wt %...
Electrochemical reduction of biomass-derived platform molecules is an emerging route for the sustainable production fuels and chemicals. However, understanding gaps between reaction conditions, underlying mechanisms, product selectivity have limited rational design active, stable, selective catalyst systems. In this work, mechanisms electrochemical furfural, important biobased molecule model aldehyde reduction, are explored through a combination voltammetry, preparative electrolysis,...
Electrocatalytic oxidation of HMF to FDCA was achieved on Pd/C, Au/C and Pd–Au/C catalysts the synergistic effect Pd–Au alloying is clearly demonstrated with electrochemical methods.
The electrocatalytic oxygen evolution reaction (OER) is a critical anode often coupled with electron or photoelectron CO2 reduction and H2 reactions at the cathode for renewable energy conversion storage. However, sluggish OER kinetics utilization of precious metal catalysts are key obstacles in broad deployment these technologies. Herein, inexpensive supported 4 nm Ni-Fe nanoparticles (NiyFe1-yOx/C) featuring amorphous structures have been prepared via solution-phase nanocapsule method...
Removing excess nitrate (NO3–) from waste streams has become a significant environmental and health topic. However, realizing highly selective NO3– conversion toward N2, primarily via electrocatalytic conversions, proven challenging, largely because of the kinetically uncontrollable NO3–-to-NO2– pathway unfavorable N–N coupling. Herein, we discovered unique ultra-high NO3–-to-NO2–activity on oxide-derived silver (OD-Ag). Up to 98% selectivity 95% Faradaic efficiency (FE) NO2– were observed...
The enhancement of Pt nanoparticle anchoring strength and dispersion on carbon supports is highly desirable in polymer electrolyte membrane fuel cells (PEMFCs) as well other catalysis processes. Presented here a comprehensive study the interaction between catalyst nanoparticles terms electronic structure change its effects electrocatalytic performance supported catalysts. Graphene was chosen an ideal model support because unique 2-D allows direct investigation with metal at their interface....
Anion-exchange membrane fuel cells hold promise to greatly reduce cost by employing nonprecious metal cathode catalysts. More efficient anode catalysts are needed, however, improve the sluggish hydrogen oxidation reaction in alkaline electrolytes. We report that BCC-phased PdCu alloy nanoparticles, synthesized via a wet-chemistry method with critical thermal treatment, exhibit up 20-fold HOR improvement both mass and specific activities, compared FCC-phased counterparts. activity of is 4...
Electrocatalytic hydrogenation and oxidation of 5-(hydroxymethyl)furfural in one paired electrolyzer produces two biorenewable monomers with a combined electron efficiency 187%.
Abstract Heterostructured oxides with versatile active sites, as a class of efficient catalysts for CO 2 electrochemical reduction (CO ER), are prone to undergo structure reconstruction under working conditions, thus bringing challenges understanding the reaction mechanism and rationally designing catalysts. Herein, we first time elucidate structural CuO/SnO potentials reveal intrinsic relationship between ER product selectivity in situ evolved heterostructures. At −0.85 V RHE , evolves Cu...
Abstract In this work, self‐derivation and surface reconstruction strategies are innovatively introduced into the synthetic route of metal complex‐derived catalysts. The in situ grown nanorod arrays Ni‐based complex prepared by a simple rapid ligand chelation reaction. Furthermore, highly active heterogeneous electrocatalysts developed mild‐temperature calcination. Attributed to maintained morphology dispersed Ni/Ni(OH) 2 heterojunction sites, as‐prepared electrode exhibits superior hydrogen...
A method for preparing Nafion/acid functionalized zeolite Beta (NAFB) nanocomposite membranes by in situ hydrothermal crystallization is described. The have a slightly lower proton conductivity but markedly methanol permeability (ca. 40% reduction). When tested with 1 M feed, the direct fuel cells (DMFCs) NAFB composite higher open circuit voltage (OCV; 3%) and much maximum power density (21%) than those pure Nafion 115 membranes. With concentration (5 M), DMFCs demonstrate 14% OCV 93%...
A 40 wt% Pt/C cathode electrocatalyst with controlled Pt particle size of approximately 2.9 nm showing better performance than commercial catalyst for direct methanol fuel cell was prepared by a polyol process water but without using stabilizing agent.
A simple filtration method is developed to prepare a partially oriented superhydrophobic film of carbon nanotubes (CNTs) that have been catalyzed with uniform small Pt nanoparticles (2.8 nm) at high metal loading (30 wt %). proton-exchange membrane fuel cell the CNT as cathode achieves higher single-cell performance than those black and disordered CNT-film-based probably because enhanced electrocatalytic activity Pt/CNT improved mass transport within film.
Titanium nitride nanoparticles act as a catalyst support material for proton exchange membrane fuel cells showing higher catalytic performance than conventional platinized carbon electrocatalysts.