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Unlocking the electrocatalytic activity of natural chalcopyrite using mechanochemistry

Journal of Energy Chemistry 2022年第5期31卷 275-283页

作者： Zhijie Chen Renji Zheng Wenfei Wei Wei Wei bing-jie ni Hong Chen Centre for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneyNSW 2007Australia State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control Shenzhen Key Laboratory of Interfacial Science and Engineering of Materials(SKLISEM)School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055GuangdongChina

Manipulating the structure self-reconstruction of transition metal sulfide-based(pre)catalysts during the oxygen evolution reaction(OER) process is of great interest for developing cost-effective OER catalysts,which remains a central challenge. Here we realize a deep structure self-reconstruction of natural chalcopyrite to unlock its OER performance via mechanochemical activation. Compared with the manually milled counterpart(CuFeS_(2)-HM), the mechanically milled catalyst(CuFeS_(2)-BM) with a reduced crystallinity exhibits a 7.11 times higher OER activity at 1.53 V vs. RHE. In addition, the CuFeS_(2)-BM requires a low overpotential of 243 mV for generating 10 mA cm^(-2) and exhibits good stability over 24 h. Further investigations suggest that the excellent OER performance of CuFeS_(2)-BM mainly originates from the decreased crystallinity induced the in situ deep structure self-reconstruction of the originally sulfides into the electroactive and stable metal(oxy)hydroxide phase(e.g., a-Fe OOH) via S etching under OER conditions. This study demonstrates that regulating the crystallinity of catalysts is a promising design strategy for developing highly efficient OER catalysts via managing the structure self-reconstruction process, which can be further extended to the design of efficient catalysts for other advanced energy conversion devices. In addition, this study unveils the great potentials of engineering abundant natural minerals as cost-effective catalysts for diverse applications.

关键词： Mechanochemistry Crystallinity Oxygen evolution reaction Self-reconstruction Mineral electrocatalysts

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Boride-based electrocatalysts:Emerging candidates for water splitting

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Nano Research 2020年第2期13卷 293-314页

作者： Zhijie Chen Xiaoguang Duan Wei Wei Shaobin Wang Zejie Zhang bing-jie ni Centre for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneyNSW 2007Australia 2 School of Chemical Engineering and Advanced MaterialsThe University o f AdelaideSouth Australia 5005Australia 3 State Key Laboratory for Powder MetallurgyCentral South UniversityChangsha 410083China

Electrocatalytic water splitting(EWS)is a promising route to produce hydrogen in a sustainable and environment-benign *** realize the large-scale hydrogen production,it is paramount to develop desirable electrocatalysts with engineered structure,high catalytic activity,facile accessibility,low cost,and good *** late,boride-based materials,especially transition-metal borides(TMBs),are emerging as promising candidates for the EWS ***,so far,ittle attempt has been made to provide a comprehensive summary on these ***,this review provides the up-to-date status on upgrading the catalytic performance of TMB-based nanomaterials by regulating the internal and external *** conventional synthetic techniques are first presented for the preparation of TMB-based ***,the advanced strategies are summarized to enhance the catalytic performance of TMBs,including morphology control,component regulation,phase engineering,surface oxidation and ***,the design principles of TMB-based electrocatalysts for high-performance EWS are ***,the current challenges and future directions in the development of TMB-based materials are *** review article is expected to envisage insights into the TMBs-based water splitting and to provide strategies for design of the next-generation TMB-based electrocatalysts.

关键词： transition-metal borides electrocatalysts water splitting oxygen evolution reaction hydrogen evolution reaction

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Emerging alternative for artificial ammonia synthesis through catalytic nitrate reduction

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Journal of Materials Science & Technology 2021年第18期77卷 163-168页

作者： Derek Hao Zhi-gang Chen Monika Figiela Izabela Stepniak Wei Wei bing-jie ni Centre for Technology in Water and Wastewater(CTWW) School of Civil and Environmental EngineeringUniversity of Technology Sydney(UTS)UltimoNSW2007Australia Centre for Future Materials University of Southern QueenslandSpringfield CentralQueensland4300Australia School of Mechanical and Mining Engineering The University of QueenslandBrisbaneQueensland4072Australia Institute of Chemistry and Applied Electrochemistry Faculty of Chemical TechnologyPoznan University of TechnologyBerdychowo 4PL-60965PoznanPoland

Artificial catalytic synthesis of ammonia has become a hot research frontier in recent *** is regarded as a promising approach that may replace the Haber-Bosch process and reduce global carbon dioxide ***,it is extremely difficult for the cleavage of nitrogen molecules under ambient *** the ammonia yield rate is still low and the study is still limited in lab *** nitrites or nitrates are used as nitrogen sources,rather than nitrogen gas,the catalytic efficiency can be significantly improved,and the residual nitrate and nitrite contaminations in water systems can be efficiently eliminated and converted to energy sources at the same *** is an emerging alternative for artificial ammonia synthesis,while there is not enough focus on the reduction of nitrate and ***,we systematically compared the differences between the reduction of nitrogen and nitrates,as well as listed the challenges in this *** total conversion rate and energy efficiency of catalytic nitrate reduction are much higher than nitrogen gas reduction due to the much higher solubility and better converting pathway,which might be further enhanced by employing catalysts improvement ***,we also proposed suitable materials as well as a few future researches needs that may help boost the development of artificial ammonia synthesis using nitrate.

关键词： nitrogen fixation nitrate reduction Ammonia synthesis Electrocatalysis Photocatalysis

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Graphitic carbon nitride with different dimensionalities for energy and environmental applications

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Nano Research 2020年第1期13卷 18-37页

作者： Qiang Hao Guohua Jia Wei Wei Ajayan Vinu Yuan Wang Hamidreza Arandiyan bing-jie ni Centre for Technology in Water and Wastewater(CTWW) School of Civil and Environmental EngineeringUniversity of Technology Sydney(UTS)SydneyNSW2007Australia Curtin Institute of Functional Molecules and Interfaces School of Molecular and Life SciencesCurtin UniversityPerthWA6845Australia Global Innovative Centre for Advanced Nanomaterials(GICAN) School of EngineeringFaculty of Engineering and Built EnvironmentThe University of NewcastleCallaghanNSW2308Australia School of Chemistry Faculty of ScienceThe University of New South WalesSydneyNSW2052Australia Laboratory of Advanced Catalysis for Sustainability School of ChemistryThe University of SydneySydneyNSW2006Australia

As a metal-free semiconductor,graphitic carbon nitride(g-C3N4)has received extensive attention due to its high stability,nontoxicity,facile and low-cost synthesis,appropriate band gap in the visible spectral range and wide availability of *** dimensions of g-C3N4 can influence the regime of the confinement of electrons,and consequently,g-C3N4 with various dimensionalities shows different properties,making them available for many stimulating *** there are some reviews focusing on the synthesis strategy and applications of g-C3N4,there is still a lack of comprehensive review that systemically summarises the synthesis and application of different dimensions of g-C3N4,which can provide an important theoretical and practical basis for the development of g-C3N4 with different dimensionalities and maximises their potential in diverse *** reviewing the latest progress of g-C3N4 studies,we aim to summarise the preparation of g-C3N4 with different dimensionalities using various structural engineering strategies,discuss the fundamental bottlenecks of currently existing methods and their solution strategies,and explore their applications in energy and environmental ***,it also puts forward the views on the future research direction of these unique materials.

关键词： graphitic carbon nitride micro-nano structure energy functional materials environmental functional materials photocatalyst

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Small moleculeπ-conjugated electron acceptor for highly enhanced photocatalytic nitrogen reduction of BiOBr

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Journal of Materials Science & Technology 2022年第14期109卷 276-281页

作者： Derek Hao Tianyi Ma Baohua Jia Yunxia Wei Xiaojuan Bai Wei Wei bing-jie ni Centre for Technology in Water and Wastewater(CTWW) School of Civil and Environmental EngineeringUniversity of Technology Sydney(UTS)SydneyNSW 2007Australia Centre for Translational Atomaterials Faculty of ScienceEngineering and TechnologySwinburne University of TechnologyHawthornVIC 3122Australia College of Chemistry and Chemical Engineering Lanzhou City UniversityLanzhou 730070China Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control Beijing University of Civil Engineering and ArchitectureBeijing 102612China

Artificial ammonia synthesis using solar energy is of great significance as it can help narrow the gap to the zero-net emission ***,the current photocatalytic activity is generally too low for mass ***,we report a novel bismuth bromide oxide(BiOBr)-Tetracyanoquinodimethane(TCNQ)photocatalyst prepared via a facile self-assembly *** to the well-match band structure of TCNQ and Bi OBr,the separation and transfer of photogenerated electron-hole pairs were significantly *** importantly,the abundant delocalizedπelectrons of TCNQ,and the electron-withdrawing property of TNCQ made electrons efficiently accumulated on the catalysts,which can strengthen the adsorption and cleavage of nitrogen *** a result,the photocatalytic activity increased *** highest ammonia yield of the optimized sample reached 2.617 mg/(h gcat),which was 5.6-fold as that of pristine BiOBr and higher than the reported BiOBr-based *** isotope labeled^(15)N_(2)was used to confirm that the ammonia is formed form the fixation of N_(2).Meanwhile,the sample also had good *** 4-time usage,the photocatalysts still had about 81.8%as the fresh *** results of this work provide a new way for optimizing the electronic structure of photocatalysts to achieve highly efficient photochemical N_(2) reduction.

关键词： BiOBr TCNQ nitrogen reduction Electron accepter Photocatalysis。

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Amorphous electrocatalysts for urea oxidation reaction

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Progress in Natural Science:Materials International 2024年第2期34卷 362-375页

作者： Fenghui Guo Dongle Cheng Qian Chen Hao Liu Zhiliang Wu ning Han bing-jie ni Zhijie Chen School of Materials Science and Technology China University of Geosciences Shenzhen Academy of Metrology and Quality Inspection Centre for Technology in Water and Wastewater School of Civil and Environmental Engineering University of Technology Sydney College of Safety and Environmental Engineering Shandong University of Science and Technology Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity Shandong University of Science and Technology Discipline of Chemical Engineering Western Australian School of Mines: Minerals Energy and Chemical Engineering Curtin University Department of Materials Engineering School of Civil and Environmental Engineering The University of New South Wales

Electrochemical urea oxidation reaction(UOR) is a promising alternative to oxygen evolution reaction(OER) for realizing energy-saving hydrogen production. Developing efficient electrocatalysts for UOR becomes a central challenge. Recently, amorphous materials have been extensively used as UOR catalysts because of their numerous defective sites and flexible electronic properties. In this review, recent advancements in the development of amorphous UOR electrocatalysts are analyzed. The UOR mechanism is discussed, and the design of amorphous catalysts is then analyzed. The main catalyst design strategies are illustrated, including nanostructure control,heteroatom doping, composition regulation, and heterostructure construction. Also, electrocatalysts' structureperformance correlation is interpreted. Perspectives in this field are proposed for guiding future studies on the development of high-performance amorphous catalysts towards energy sustainability.

关键词： Catalyst design Component regulation Heteroatom doping Heterostructures Hydrogen energy

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Tungsten pnictides for water electrolysis:advances and perspectives

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Tungsten 2024年第4期6卷 675-695页

作者： Xue Kang Xi-Han Tan ning Han Jian-Feng Hou Chen-Min Yao Zhi-jie Chen bing-jie ni Department of Chemistry and Chemical Engineering Lyuliang UniversityLvliang033001China Department of Materials Engineering KU LeuvenLouvain3001Belgium State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration Key Laboratory of Oral Biomedicine Ministry of EducationHubei Key Laboratory of StomatologySchool&Hospital of StomatologyWuhan UniversityWuhan430079China School of Civil and Environmental Engineering The University of New South WalesSydneyNSW 2052Australia

Hydrogen fuel is recognized as a promising energy carrier for the sustainable development of global energy system and the green hydrogen production via water electrolysis attracts great *** development of cost-effective electrocatalysts for water electrolysis is important for enhancing green hydrogen production ***,tungsten pnictides(phosphides and nitrides)have emerged as promising catalysts for water electrolysis,and efficient tungsten pnictide-based catalysts with different nanostructures,compositions,and surface chemical properties have been *** this review,recent progress in the design of tungsten pnictide-based electrocatalysts for water electrolysis is comprehensively *** synthesis of tungsten pnictide-based electrocatalysts are discussed ***,current achievements in developing efficient tungsten pnictide electrocatalysts for water electrolysis are detailed,and four key catalyst design strategies(i.e.,nanostructure control,heteroatom doping,defect engineering,and heterostructure design)are *** physicochemical properties-catalytic performance relationship of tungsten pnictide-based electrocatalysts is also *** last,perspectives in this field are put forward for guiding further research on the design and application of high-performance tungsten pnictide-based electrocatalysts.

关键词： Tungsten nitrides Tungsten phosphides Hydrogen evolution reaction Oxygen evolution reaction Electrocatalysts

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Design of earth-abundant amorphous transition metal-based catalysts for electrooxidation of small molecules:Advances and perspectives

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SusMat 2023年第3期3卷 290-319页

作者： Zhijie Chen ning Han Renji Zheng Zijie Ren Wei Wei bing-jie ni Centre for Technology inWater and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneyUltimoNew South WalesAustralia Department of Materials Engineering KU LeuvenLeuvenBelgium School of Minerals Processing and Bioengineering Central South UniversityChangshaHunanChina School of Resources and Environmental Engineering Wuhan University of TechnologyWuhanChina

Electrochemical oxidation of small molecules(e.g.,water,urea,methanol,hydrazine,and glycerol)has gained growing scientific interest in the fields of electrochemical energy conversion/storage and environmental *** cost-effective catalysts for the electrooxidation of small molecules(ESM)is thus crucial for improving reaction ***,earth-abundant amorphous transition metal(TM)-based nanomaterials have aroused souring interest owing to their earth-abundance,flexible structures,and excellent electrochemical *** of amorphous TM-based nanomaterials have been designed and used as promising ESM ***,recent advances in the design of amorphous TM-based ESM catalysts are comprehensively *** features(e.g.,large specific surface area,flexible electronic structure,and facile structure reconstruction)of amorphous TM-based ESM catalysts are first ***,the design of various TM-based catalysts with advanced strategies(e.g.,nanostructure design,component regulation,heteroatom doping,and heterostructure construction)is fully scrutinized,and the catalysts’structure-performance correlation is *** perspectives in the development of cost-effective amorphous TM-based catalysts are then *** review is expected to provide practical strategies for the design of next-generation amorphous electrocatalysts.

关键词： amorphous catalysts catalyst design electrocatalytic conversion electrochemical oxidation transition metals

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Recent advances in waste-derived functional materials for wastewater remediation

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Eco-Environment & Health 2022年第2期1卷 86-104页

作者： Zhijie Chen Wei Wei Hong Chen bing-jie ni Center for Technology in Water and Wastewater School of Civil and Environmental EngineeringUniversity of Technology SydneyNSW2007Australia State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control Shenzhen Key Laboratory of Interfacial Science and Engineering of MaterialsSchool of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China

Water pollution is a major concern for public health and a sustainable *** is urgent to purify wastewater with effective methods to ensure a clean water *** wastewater remediation techniques rely heavily on functional materials,and cost-effective materials are thus highly *** great environmental and economic significance,developing waste-derived materials for wastewater remediation has undergone explosive growth ***,the applications of waste(e.g.,biowastes,electronic wastes,and industrial wastes)-derived materials for wastewater purification are comprehensively *** strategies for turning wastes into functional materials are firstly summarized,including pyrolysis and combustion,hydrothermal synthesis,sol–gel method,co-precipitation,and ball ***,critical experimental parameters within different design strategies are ***,recent applications of waste-derived functional materials in adsorption,photocatalytic degradation,electrochemical treatment,and advanced oxidation processes(AOPs)are *** mainly focus on the development of efficient functional materials via regulating the internal and external characteristics of waste-derived materials,and the material’s property-performance correlation is also ***,the key future perspectives in the field of waste-derived materials-driven water remediation are highlighted.

关键词： Wastewater remediation Solid wastes Waste-derived materials Adsorption Advanced oxidation processes Catalytic degradation

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Waste-Derived Catalysts for Water Electrolysis:Circular Economy-Driven Sustainable Green Hydrogen Energy

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Nano-Micro Letters 2023年第1期15卷 43-79页

作者： Zhijie Chen Sining Yun Lan Wu Jiaqi Zhang Xingdong Shi Wei Wei Yiwen Liu Renji Zheng ning Han bing-jie ni Centre for Technology in Water and Wastewater(CTWW) School of Civil and Environmental EngineeringUniversity of Technology SydneyUltimoNSW 2007Australia Functional Materials Laboratory(FML) School of Materials Science and EngineeringXi’an University of Architecture and TechnologyXi’an 710055People’s Republic of China School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083People’s Republic of China Department of Materials Engineering KU Leuven3001 LouvainBelgium

The sustainable production of green hydrogen via water electrolysis necessitates cost-effective *** following the circular economy principle,the utilization of waste-derived catalysts significantly promotes the sustainable development of green hydrogen ***,diverse waste-derived catalysts have exhibited excellent catalytic performance toward hydrogen evolution reaction(HER),oxygen evolution reaction(OER),and overall water electrolysis(OWE).Herein,we systematically examine recent achievements in waste-derived electrocatalysts for water *** general principles of water electrolysis and design principles of efficient electrocatalysts are discussed,followed by the illustration of current strategies for transforming wastes into ***,applications of waste-derived catalysts(i.e.,carbon-based catalysts,transitional metal-based catalysts,and carbon-based heterostructure catalysts)in HER,OER,and OWE are reviewed *** emphasis is put on correlating the catalysts’structure-performance ***,challenges and research directions in this booming field are finally *** review would provide useful insights into the design,synthesis,and applications of waste-derived electrocatalysts,and thus accelerate the development of the circular economy-driven green hydrogen energy scheme.

关键词： Waste-derived electrocatalysts Water splitting Sustainable hydrogen energy Catalyst design Circular economy

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