A5026849138- Electrocatalysts for Energy Conversion
- Catalytic Processes in Materials Science
- Advanced battery technologies research
- Fuel Cells and Related Materials
- Supercapacitor Materials and Fabrication
- Catalysis and Oxidation Reactions
- Oxidative Organic Chemistry Reactions
- Adsorption and biosorption for pollutant removal
- Nanomaterials for catalytic reactions
- Conducting polymers and applications
- Environmental remediation with nanomaterials
- Carbon and Quantum Dots Applications
- Biodiesel Production and Applications
- Catalysis and Hydrodesulfurization Studies
- Enzyme Catalysis and Immobilization
- Zeolite Catalysis and Synthesis
- Advanced Photocatalysis Techniques
- MXene and MAX Phase Materials
- Advancements in Battery Materials
- Covalent Organic Framework Applications
- Catalysis for Biomass Conversion
- Layered Double Hydroxides Synthesis and Applications
- Clay minerals and soil interactions
- Electrochemical Analysis and Applications
- Nanocluster Synthesis and Applications
Dongguan University of Technology
2016-2025
Guangdong University of Technology
2022
Fanjingshan National Nature Reserve
2020
Zhejiang Normal University
2019
Jinan University
2012-2017
Hong Kong University of Science and Technology
2009
University of Hong Kong
2009
Nano and Advanced Materials Institute
2009
South China University of Technology
2007-2009
Abstract Metal‐organic frameworks recently have been burgeoning and used as precursors to obtain various metal–nitrogen–carbon catalysts for oxygen reduction reaction (ORR). Although rarely studied, Mn–N–C is a promising catalyst ORR due its weak Fenton activity strong graphitization catalysis. Here, we developed facile strategy anchoring the atomically dispersed nitrogen‐coordinated single Mn sites on carbon nanosheets (MnNCS) from an Mn‐hexamine coordination framework. The Mn–N 4 were...
Abstract The universal linear scan voltammogram measurement on the rotating disk electrode (RDE) has been identified as a simple method to investigate oxygen reduction activity of electrocatalysts. steady‐state limiting current density I lim indicates maximum diffusion in reaction (ORR) during RDE measurement, which should be fixed value theory for 4e ORR particular concentration solution and at certain rotate speed. However, experiments, is always variable smaller than theoretical even...
In virtue of the high electrochemical activity and inherent flexibility, polyaniline (PANI) is an ideal electrode material for flexible supercapacitors (SCs). However, in practical applications, inevitable agglomeration PANI leads to low capacitance, poor rate performance, cycling stability. Here, antimonene (Sb) nanosheets with ultrathin thickness, excellent mechanical strength, flexibility are introduced into carbon nanotube (CNT) framework electrodeposition via simple vacuum filtration,...
Developing low cost, high-performance, and durable bifunctional catalysts for oxygen reduction evolution reactions is critical a commercial application of fuel cells metal–air batteries. Nitrogen-doped carbon nanotubes encapsulated nickel nanoparticles are prepared through simple pyrolysis procedure with melamine chloride hexahydrate as precursors. The catalyst featured by inside nitrogen-doped nanotubes, abundant surface nitrogen doping. optimized exhibits proximate activity to...
Porous carbons with high capacitive properties derived from biomass have been increasingly studied for supercapacitor applications. In this work, we prepared N-doped porous carbon through a one-pot MgCl2 activation of lotus root flour urea. A series different physical/chemical were synthesized by adjusting precursors and pyrolysis temperatures. The could produce abundant micropores mesoporous channels in nanocarbons, which are beneficial ions adsorption diffusion. addition urea improved the...
This work investigates the possibility that valuable levulinic acid and sulfonated carbon could be produced in a one-pot reaction. p-Toluenesulfonic is used as an acidic catalyst well sulfonating agent reaction, its main effects are determined, depending on water dosage. Relatively low dosage conductive to formation with high H+ exchange capacity −SO3H intensity, good framework, improved thermal stability surface hydrophobicity, catalytic activity. In contrast, detrimental yield. Under...
Developing advanced electrocatalysts for the oxygen reduction reaction (ORR) is a critical in fuel cells. Metal–organic framework (MOF)‐derived nitrogen‐doped carbons have been widely reported as promising ORR. Herein, KCl‐assisted pyrolysis method to prepare N‐doped porous carbon nanosheets (NCNS). During preparation, KCl crystals act templates and activator, penetrating ZIF‐8‐derived material via capillarity, which facilitates formation of micro‐ mesopores nanosheets. By adjusting dosage...
Developing efficient bifunctional oxygen reduction (ORR) and evolution (OER) electrocatalysts is critical for renewable energy technologies. Noble metal catalysts face limitations in cost, scarcity, compatibility. Herein, we report the synthesis of nickel nanoparticles encapsulated nitrogen-doped carbon nanosheets (Ni@NC-T) via a solvothermal polymerization pyrolysis process using Ni-hexamine coordination framework (NiHMT) as precursor. The Ni@NC-900 catalyst exhibits superior ORR OER...
Abstract A novel carbon solid acid catalyst was prepared by incomplete hydrothermal carbonization of β‐cyclodextrin into small polycyclic aromatic sheets, followed the introduction –SO 3 H groups via sulfonation with sulfuric acid. The physical and chemical properties were characterized in detail. simultaneously catalyzed esterification transesterification reactions to produce biodiesel from high free fatty (FFA) containing oils (55.2 %). For as‐prepared catalyst, 90.82 % oleic esterified...
Fe/Mn mixed metal oxides were synthesized facilely by a grinding method and characterized TEM, XRD, XPS, BET. The characterization results revealed that mainly composed of not highly crystallized Fe 2 O 3 Mn 4 nanoparticles with diameter about 3–5 nm. specific BET surface areas the composite affected amounts KCl diluent in preparation process 268 m /g can be achieved. Compared oxide adsorbents existent, composites showed good adsorption capacity, stability, regeneration activity for Cr(VI)...
In this paper, ferric nitrate was used to oxidize benzyl alcohol in a mild condition and demonstrated its better performance compared HNO3. the reaction, conversion rate product selectivity could be both as high 95% N2 atmosphere, while benzaldehyde yield also reached 85% air. Similar Fe(NO3)3·9H2O, other metallic nitrates such Al(NO3)3·9H2O Cu(NO3)2·3H2O with activity. The applicability of Fe(NO3)3·9H2O for benzylic investigated, reaction optimized at same time. results showed would more...
The activity of RuO(2) x xH(2)O/CNT for benzyl alcohol oxidation can be predicted by the specific capacitance (SC) RuO(2), suggesting that highly active nanocatalysts are also good supercapacitor materials with SC high up to 1500 F g(RuO(2))(-1).
Abstract N‐doped porous carbons were prepared from mung bean flour by chemical activation with calcium chloride and urea. Adjusting the precursor preparation temperature had significant effect on graphitization, specific surface area, porosity composition of carbons. The material mixture flour, urea, at 800 °C was optimal sample. It exhibited an excellent capacitance (247.2 F g −1 2 mV s 300.5 1 A , respectively), outstanding rate performance (178.6 200 225 100 respectively) good durability...
Carbon-based oxygen reduction reaction (ORR) catalysts, especially N-doped carbon and Fe/N co-doped (Fe-N-C) catalysts are the most promising substitution for Pt-based catalysts. However, preparations of carbon-based ORR consume large amounts fossil organic nitrogen compounds high-cost supports. Herein, this paper reports a green strategy employing nontoxic CaCl2 as an activating agent, FeCl3 metal source, urea source to synthesize iron porous from lotus root. The as-synthesized root-derived...
Gold nanoparticles supported on halloysite nanotubes (Au/HNTs) were prepared by a homogeneous deposition-precipitation method. The specific characteristics of the catalyst characterized in detail, relation to their performance for solvent-free oxidation benzyl alcohol. particular structure resulted high catalytic activity and stability compared with other gold catalysts. enhanced Au/HNTs was mainly attributed presence higher amount oxidized species tubular HNTs.