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Two-dimensional nanomaterials confined single atoms: New opportunities for environmental remediation

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Nano Materials Science 2023年第1期5卷 15-38页

作者： Yu Yin Lei Shi Shu Zhang Xiaoguang Duan Jinqiang Zhang Hongqi Sun shaobin wang School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang212100China Joint International Research Laboratory of Biomass Energy and Materials College of Materials Science and EngineeringNanjing Forestry UniversityNanjing210037China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA5005Australia School of Science Edith Cowan UniversityJoondalupWA6027Australia

Two-dimensional(2D)supports confined single-atom catalysts(2D SACs)with unique geometric and electronic structures have been attractive candidates in different catalytic applications,such as energy conversion and storage,value-added chemical synthesis and environmental ***,their environmental appli-cations lack of a comprehensive summary and in-depth *** this review,recent progresses in synthesis routes and advanced characterization techniques for 2D SACs are introduced,and a comprehensive discussion on their applications in environmental remediation is ***,2D SACs can be effective in catalytic elimination of aqueous and gaseous pollutants via radical or non-radical routes and transformation of toxic pollutants into less poisonous species or highly value-added products,opening a new horizon for the contami-nant *** addition,in-depth reaction mechanisms and potential pathways are systematically discussed,and the relationship between the structure-performance is ***,several critical challenges within this field are presented,and possible directions for further explorations of 2D SACs in environmental remediation are *** the research of 2D SACs in the environmental application is still in its infancy,this review will provide a timely summary on the emerging field,and would stimulate tremendous interest for designing more attractive 2D SACs and promoting their wide applications.

关键词： Single-atom catalysis Two-dimensional material Advanced oxidation process Degradation Transformation Industrial wastewater

A Superaerophobic Bimetallic Selenides Heterostructure for Efficient Industrial-Level Oxygen Evolution at Ultra-High Current Densities

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Nano-Micro Letters 2020年第8期12卷 213-224页

作者： Jiaxin Yuan Xiaodi Cheng Hanqing wang Chaojun Lei Sameer Pardiwala Bin Yang Zhongjian Li Qinghua Zhang Lecheng Lei shaobin wang Yang Hou Key Laboratory of Biomass Chemical Engineering of Ministry of Education College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China Institute of Zhejiang University-Quzhou Quzhou 324000People’s Republic of China Ningbo Research Institute Zhejiang UniversityNingbo 315100People’s Republic of China Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA 5005Australia

Cost-effective and stable electrocatalysts with ultra-high current densities for electrochemical oxygen evolution reaction(OER)are critical to the energy crisis and environmental ***,we report a superaerophobic three dimensional(3D)heterostructured nanowrinkles of bimetallic selenides consisting of crystalline NiSe2 and NiFe2Se4 grown on NiFe alloy(NiSe2/NiFe2Se4@NiFe)prepared by a thermal selenization *** this unique 3D heterostructure,numerous nanowrinkles of NiSe2/NiFe2Se4 hybrid with a thickness of ~100 nm are grown on NiFe alloy in a uniform *** by the large active surface area and high electronic conductivity,the superaerophobic NiSe2/NiFe2Se4@NiFe heterostructure exhibits excellent electrocatalytic activity and durability towards OER in alkaline media,outputting the low potentials of 1.53 and 1.54 V to achieve ultra-high current densities of 500 and 1000 mA cm^−2,respectively,which is among the most active Ni/Fe-based selenides,and even superior to the benchmark Ir/C *** in-situ derived FeOOH and NiOOH species from NiSe2/NiFe2Se4@NiFe are deemed to be efficient active sites for OER.

关键词： Superaerophobicity Bimetallic selenide Heterostructure electrocatalyst Strong interfacial coupling Oxygen evolution reaction

Acidification and bubble template derived porous g-C_(3)N_(4) for efficient photodegradation and hydrogen evolution

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Chinese Chemical Letters 2020年第10期31卷 2668-2672页

作者： Yixuan wang Fengting He Lin Chen Jie Shang Jiajia wang Shuaijun wang Huimin Song Jinqiang Zhang Chaocheng Zhao shaobin wang Hongqi Sun State Key Laboratory of Petroleum Pollution Control China University of Petroleum(East China)Qingdao 266580China School of Engineering Edith Cowan University270 Joondalup DrivePerth WA 6027Australia China General Nuclear Power Hongda Environmental Science and Technology Co. Ltd.Jinan 250000China Dongying Municipal Bureau of Marine Development and Fisheries Dongying Municipal Marine and Fishery Environmental Monitoring CenterDongying 257091China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide SA 5005Australia

Graphitic carbon nitride(g-C_(3)N_(4))as a metal-free candidate of photocatalyst has received worldwide attention because of its great potentials in solar light-induced degradation and hydrogen evolution,yet the industrial application is seriously hindered by the small specific surface area and rapid recombination rate of ***,we demonstrate that porous g-C_(3)N_(4)(HCl-CNU-X)can be prepared via the copolymerization of acidified melamine and a green bubble template(urea).Transmission electron microscopy and nitrogen sorption characterization results show that the prepared HCl-CNU-X possesses an in-plane porous structure and large specific surface area,enabling the exposure of more accessible active *** a result,HCl-CNU-X exhibits both enhanced photocatalytic tetracycline hydrochloride degradation and higher hydrogen evolution than bulk g-C_(3)N_(4).The boosted photocatalytic performance was ascribed to the formation of the porous structure,which dramatically promotes the separation of charge-carriers and facilitates the electron *** work demonstrates that the acidification of nitrogen-rich precursors combined with a bubble-template can develop a new paradigm of highly porous photocatalysts for environmental remediation and water splitting.

关键词： g-C_(3)N_(4) Porous structure Tetracycline hydrochloride Hydrogen evolution Acidification and bubble template Visible light

Nitrogen-doped Carbon Nanospheres-Modified Graphitic Carbon Nitride with Outstanding Photocatalytic Activity

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纳微快报：英文版 2020年第2期12卷 154-168页

作者： Qiaoran Liu Hao Tian Zhenghua Dai Hongqi Sun Jian Liu Zhimin Ao shaobin wang Chen Han Shaomin Liu Department of Chemical Engineering Curtin UniversityPerthWA 6845Australia State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023People’s Republic of China School of Environmental Science and Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Engineering Edith Cowan UniversityJoondalupWA 6027Australia School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia

Metals and metal oxides are widely used as photo/electro-catalysts for environmental ***,there are many issues related to these metal-based catalysts for practical applications,such as high cost and detrimental environmental impact due to metal ***-based catalysts have the potential to overcome these *** this study,monodisperse nitrogen-doped carbon nanospheres(NCs)were synthesized and loaded onto graphitic carbon nitride(g-C3N4,GCN)via a facile hydrothermal method for photocatalytic removal of sulfachloropyridazine(SCP).The prepared metal-free GCN-NC exhibited remarkably enhanced efficiency in SCP *** nitrogen content in NC critically influences the physicochemical properties and performances of the resultant *** optimum nitrogen doping concentration was identified at 6.0 wt%.The SCP removal rates can be improved by a factor of 4.7 and 3.2,under UV and visible lights,by the GCN-NC composite due to the enhanced charge mobility and visible light *** mechanism of the improved photocatalytic performance and band structure alternation were further investigated by density functional theory(DFT)*** DFT results confirm the high capability of the GCN-NC hybrids to activate the electron–hole pairs by reducing the band gap energy and efficiently separating electron/hole *** and hydroxyl radicals are subsequently produced,leading to the efficient SCP removal.

关键词： N-doping Carbon sphere Graphitic carbon nitride Photocatalysis Degradation

Experimental Study of Bowed-twisted Stators in an Axial Transonic Fan Stage

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Chinese Journal of Aeronautics 2009年第4期22卷 364-370页

作者： Chen Fu,Li shaobin,Su Jiexian,wang Zhongqi School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China School of Energy Science and Engineering Harbin Institute of Technology Harbin 150001 China

Bowed-twisted stators with large camber angles have been developed to replace the conventional tandem stators in an axial transonic fan stage working at high subsonic speeds. Experimental study is carried out on both stages with tandem stators and with bowed-twisted stators. Compared to the tandem stators, the bowed-twisted stators change the distribution of the low-energy fluid and the potential high-energy fluid at the compressor outlets, reduce the endwall loss significantly, improve the aerody- namic matching of rotors and stators, and eventually increase the fan stage performances. The aerodynamic performances of the fan stage at different operating points are compared and contrasted. The results show that the transonic fan stage with bowed-twisted stators has better aerodynamic performances. It is thus suggested that the bowed-twisted stators with large camber angles be popularized into the high-loaded transonic fan designs.

关键词： large camber angle bowed-twisted stator aerodynamic performance transonic fan stage

Location and size regulation of manganese oxides within mesoporous silica for enhanced antibiotic degradation

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Chinese Journal of Chemical Engineering 2022年第8期35卷 36-43页

作者： Min Lu Mengxuan Liu Chunli Xu Yu Yin Lei Shi Hong Wu Aihua Yuan Xiao-Ming Ren shaobin wang Hongqi Sun School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Engineering Edith Cowan UniversityJoondalupWA 6027Australia State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemistry and Molecular EngineeringNanjing Tech UniversityNanjing 211816China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA 5005Australia

Refractory antibiotics in domestic wastewater are hard to be completely eliminated by conventional methods,and then lead to severe environmental contamination and adverse effects on public *** present work,advanced oxidation processes(AOPs)are adopted to remove the antibiotic of sul-fachloropyridazine(SCP).Nanosized Mn_(2)O_(3) was fabricated on the SBA-15 material to catalytically acti-vate potassium peroxydisulfate(PDS)to generate reactive oxygen radicals *** and SO_(4).for SCP *** effects of location and size of Mn_(2)O_(3) were explored through choosing either the as-made or template free SBA-15 as the precursor of *** influences from the site and size of Mn_(2)O_(3) on the oxidation activity were *** was found that Mn_(2)O_(3) with a large size at the exterior of SBA-15(Mn-tfSBA)was slightly easier to degrade SCP at a low manganese loading of 1.0-2.0 mmol.g;however,complete SCP removal could only be achieved on the catalyst of Mn_(2)O_(3) with a refined size at the interior of SBA-15(Mn-asSBA).Moreover,the SO_(4).species were revealed to be the decisive radicals in the SCP degradation *** the as-made mesoporous silica as a support provides a new idea for the further development of environmentally friendly catalysts.

关键词： Advanced oxidation processes(AOPs) Sulfate radical Antibiotic degradation Manganese Mesoporous silica

Biologically effective radiation of solar ultraviolet radiation and the depletion of stratospheric ozone

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Journal of Environmental Sciences 1994年第3期6卷 373-381页

作者： wang shaobin Su Weihan(Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences),Beijing 100085,China) Wei Dingwen(Institute of Atmospheric Physics,Chinese Academy or Sciences),Beijing 100029,China)

Based on the biological action spectra and total UV-B radiation in the atmosphere,the effective UV-dose for DNA, erythema,and plant at different seasons in the last decade,and their future change in Beijing area were *** results indicate that the maxi- mum of biologically effective radiation dose at noontime is in July and the minimum is in January. From 1980 to 1989 biologically effective radiation dose have increased with the average rates of about 0.6,0.7 and 1.1 mW/m￣2 per year for January, April and October,while in July the trend of radiation dose is not ln evidence. For 1% reduction of ozone concentration radiation amplification factor for DNA,erythema and plant are 2.3,2.3 and 1.4 and for 30% reduction of ozone concentration the RAF for DNA,erythema and plant are 4.2,4.0 and 2.1,respectively.

关键词： UV-B ozone depletion biological effects solar radiation.

Active sites and reaction mechanism for N-doped carbocatalysis of phenol removal

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Green Energy & Environment 2020年第4期5卷 444-452页

作者： Mingjie Zhang Chen Han Wenyao Chen Wei Luo Yueqiang Cao Gang Qian Xinggui Zhou Xiaoguang Duan shaobin wang Xuezhi Duan State Key Laboratory of Chemical Engineering School of Chemical EngineeringEast China University of Science and TechnologyShanghai 200237China WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerthWestern Australia 6845Australia School of Chemical Engineering The University of AdelaideAdelaideSouth Australia 5005Australia

Heteroatom-doping of carbocatalysts has been a powerful strategy to remarkably enhance the catalytic ***,the underlying nature of N promotional effects on peroxymonosulfate(PMS)activation for phenol removal is understood by combining kinetics analysis with multiple techniques.A strategy using mixed acid oxidation of carbon nanotube(CNT)followed by NH3 treatment is employed to yield a series of catalysts with different N-doping contents but similar fraction of sp^(2)-hybridized carbon and defective degree,endowing with a chance to discriminate the dominant N-containing active *** multi-sites kinetics analysis suggests the graphitic N-containing sites as the dominant active *** mechanism of the surface-bound reactive species is also discriminated as the dominant reaction *** insights reported here could provide the methodology to fundamentally understand the heteroatom-doping effects of carbocatalysis.

关键词： Phenol removal Carbocatalysis Multi-sites kinetics analysis Graphitic N-Containing sites Surface-bound reactive species

Integrable Representations for the Extended AlPine Lie Algebra Coordinated by Quantum Tori in Two Variables

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Algebra Colloquium 2014年第3期21卷 535-540页

作者： Fei Kong Zhiqiang Li shaobin Tan Qing wang School of Mathematical Sciences Xiamen University Xiamen 361005 China

In this paper we classify the irreducible integrable modules for the core of the extended affine Lie algebra of type Ad-1 coordinated by Cq with finite-dimensional weight spaces and the center acting trivially, where ... 详细信息

关键词： integrable modules quantum torus extended afline Lie algebras