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Journal of Materials Science & Technology 2023年第17期148卷 10-18页

作者： Zhao Song Lingyu Li Yidi Chen xiaoguang duan Nanqi Ren State Key Laboratory of Urban Water Resource and Environment Shenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA 5005Australia

Biochars are low-cost and sustainable materials for environmental *** this work,we pre-pared three biochars using pomelo peel(P-BC),algae(A-BC),and corncob(C-BC)to recover Cd^(2+)from wastewater via capacitive deionisation(CDI).A-BC possesses the highest amount of mesopores and nitro-gen functionality and attains the highest removal of Cd^(2+)via physical *** the electro-sorption capacity,C-BC and A-BC perform better capacitive removal of Cd^(2+)than P-BC due to the smaller charge-transfer and mass-transfer ***,this work investigated the impacts of surface morphology,cell voltage,NaCl,initial pH,and Cd^(2+)concentrations on Cd^(2+)capacitive removal and electrode regen-eration *** results indicated that A-BC and C-BC may be prospective materials for Cd^(2+)removal from wastewater by ***,the presence of competing cations at high concentrations may influence the removal of Cd^(2+)at a low level,requiring the modification of A-BC and C-BC in future work.

关键词： Biochar Cd removal Capacitive deionisation Heavy metals Selectivity

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

Efficient and selective recovery of Gd(Ⅲ)via polyethyleneimine modification of lanthanum-based metal-organic frameworks

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Journal of Rare Earths 2024年第1期42卷 210-219,I0007页

作者： Wenhao Li Lijinhong Huang Bin Xiao xiaoguang duan Haike Li Lang Li Wanfu Huang Ganzhou Key Laboratory of Basin Pollution Simulation and Control Jiangxi University of Science and TechnologyGanzhou341000China Innovation Center for Water Quality Security Technology at Ganjiang River Basin Jiangxi University of Science and TechnologyGanzhou341000China Faculty of Science and Engineering WA School of Mines:MineralsEnergy and Chemical EngineeringCurtin UniversityWAAustralia School of Architecture and Design Jiangxi University of Science and TechnologyGanzhou341000China School of Resources and Architectural Engineering Gannan University of Science and TechnologyGanzhou341000China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA5005Australia School of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou341000China

With the development of the economy and the increasing demand for environmental protection,the efficient and selective recovery of Gd(Ⅲ)from actual wastewater is of critical *** this work,lanthanum-based metal-organic framework(LaBDC)materials were prepared by a hydrothermal method,and then polyethyleneimine(PEI)and LaBDC were combined by an impregnation method to form a novel LaBDC@xPEI *** prepared materials were characterized using Fourier transfo rm infrared spectroscopy(FTIR),X-ray diffraction(XRD),scanning electron microscopy(SEM),energy dispersive X-ray spectroscopy(EDX),B runauer-Emmett-Teller(BET),thermogravimetric analysis(TGA)and X-ray photoelectron spectroscopy(XPS).Experiments show that LaBDC@50%PEI has the highest adsorption capacity(181.77 mg/g)among lanthanum-based MOFs with different PEI loadings at pH=5.5,which is about 5.1 times that of bare *** adsorption isotherm analysis shows that LaBDC@50%PEI follows the Langmuir *** addition,the adsorption kinetics of LaBDC@50%PEI follows a pseudo-second-order kinetic model,indicating that the adsorption process is chemical *** is worth noting that LaBDC@50%PEI maintains good adsorption performance and stability after three recycling tests,and exhibits excellent selectivity in cation interference ***,the LaBDC@50%PEI composites possess good stability and hold great promises in rapid recovery of Gd(Ⅲ)from practical aqueous environments.

关键词： Wet-impregnation method Polyethylene imine Metaleorganic frameworks Lanthanum Recovery of Gd(Ⅲ) Rare earths

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

Carbon-based single atom catalyst: Synthesis, characterization, DFT calculations

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Chinese Chemical Letters 2022年第2期33卷 663-673页

作者： Yanan Shang xiaoguang duan Shaobin Wang Qinyan Yue Baoyu Gao Xing Xu Shandong Key Laboratory of Water Pollution Control and Resource Reuse School of Environmental Science and EngineeringShandong UniversityJi’nan 250100China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA 5005Australia

Carbon-based single-atom catalysts(SACs) with atomic sizes of active sites have become the promising candidates for a variety of catalytic systems because of their high atom utilization, and unique electronic structures. Different types of single-atom sites can be fabricated via multiple preparation strategies, which would demonstrate distinct different coordination configurations and electronic features, and ultimately affected the structure-catalysis relationship of SACs in targeted reactions. As a result, it is necessary to identify the active sites of SACs and understand the structure-catalysis relationship of SACs at the atomic scale. In this review, a variety of preparation strategies of carbon-based SACs were documented. Then, the recent development on versatile characterization techniques and computational achievements were summarized regarding in understanding the electronic and geometric characteristics of carbon-based ***, major challenges and development directions concerning single-atom sites identification and advanced tools development are discussed to shed light on future research of carbon-based SACs.

关键词： Single atom Synthesis DFT calculations Characterization Catalysis

Boron carbide boosted Fenton-like oxidation: A novel Fe(Ⅲ)/Fe(Ⅱ) circulation

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Green Energy & Environment 2020年第4期5卷 414-422页

作者： Peng Zhou Feng Cheng Gang Nie Yangyang Yang Kunsheng Hu xiaoguang duan Yongli Zhang Shaobin Wang College of Architecture&Environment Sichuan UniversityChengdu610065China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA5005Australia

The sluggish kinetics of Fe(Ⅱ)recovery in Fenton/Fenton-like reactions significantly limits the oxidation *** this study,we for the first time use boron carbide(BC)as a green and stable promotor to enhance the reaction of Fe(Ⅲ)/H_(2)O_(2) for degradation of diverse organic *** paramagnetic resonance analysis and chemical quenching/capturing experiments demonstrate that hydroxyl radicals(·OH)are the primary reactive species in the BC/Fe(Ⅲ)/H_(2)O_(2) *** situ electrochemical analysis indicates that BC remarkably boosts the Fe(Ⅲ)/Fe(Ⅱ)redox cycles,where the adsorbed Fe(Ⅲ)cations were transformed to more active Fe(Ⅲ)species with a higher oxidative potential to react with H_(2)O_(2) to produce Fe(Ⅱ).Thus,the recovery of Fe(Ⅱ)from Fe(Ⅲ)is facilitated over BC surface,which enhancesOH generation via Fenton ***,BC exhibits outstanding reusability and stability in successive cycles and avoids the secondary pollution caused by conventional organic and metalliferous ***,metal-free BC boosting Fe(Ⅲ)/H_(2)O_(2) oxidation of organics provides a green and advanced strategy for water decontamination.

关键词： Boron carbide Fenton-like reaction Hydroxyl radical Metal-free catalysis Sulfamethoxazole

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

Kinetics and mechanisms of non-radically and radically induced degradation of bisphenol A in a peroxymonosulfate-chloride system

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Environmental Science and Ecotechnology 2024年第6期22卷 191-197页

作者： Zhao Song Yu Zhang Yanhu Yang Yidi Chen Nanqi Ren xiaoguang duan State Key Laboratory of Urban Water Resource and Environment Shenzhen Key Laboratory of Organic Pollution Prevention and ControlSchool of Civil and Environmental EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen518055PR China School of Materials and Environmental Engineering Shenzhen Polytechnic UniversityShenzhen518055PR China School of Chemical Engineering The University of AdelaideAdelaideSA5005Australia

Bisphenol A,a hazardous endocrine disruptor,poses significant environmental and human health threats,demanding efficient removal *** biological methods struggle to treat BPA wastewater with high chloride(Cl^(-))levels due to the toxicity of high Cl^(-)to *** persulfate-based advanced oxidation processes(PS-AOPs)have shown promise in removing BPA from high Cl^(-)wastewater,their widespread application is always limited by the high energy and chemical usage *** we show that peroxymonosulfate(PMS)degrades BPA in situ under high Cl^(-)*** was completely removed in 30 min with 0.3 mM PMS and 60 mM Cl^(-).Non-radical reactive species,notably free chlorine species,including dissolved Cl2(l),HClO,and ClO−dominate the removal of BPA at temperatures ranging from 15 to 60°***,free radicals,including•OH and Cl_(2)^(•−),contribute minimally to BPA removal at 60°*** on the elementary kinetic models,the production rate constant of Cl2(l)(32.5 M^(−1) s^(−1))is much higher than HClO(6.5×10^(−4) M^(−1) s^(−1)),and its degradation rate with BPA(2×10^(7) M^(−1) s^(−1))is also much faster than HClO(18 M^(−1) s^(−1)).Furthermore,the degradation of BPA by Cl2(l)and HClO were enlarged by 10-and 18-fold at 60°C compared to room temperature,suggesting waste heat utilization can enhance treatment ***,this research provides valuable insights into the effectiveness of direct PMS introduction for removing organic micropollutants from high Cl^(-)*** further underscores the critical kinetics and mechanisms within the PMS/Cl⁻system,presenting a cost-effective and environmentally sustainable alternative for wastewater treatment.

关键词： BPA removal Saline wastewater Peroxymonosulfate Free chlorine Kinetic model

Cobalt porphyrins supported on carbon nanotubes as model catalysts of metal-N_(4)/C sites for oxygen electrocatalysis

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Journal of Energy Chemistry 2021年第2期30卷 77-81,I0003页

作者： Haonan Qin Yanzhi Wang Bin Wang xiaoguang duan Haitao Lei Xuepeng Zhang Haoquan Zheng Wei Zhang Rui Cao Key Laboratory of Applied Surface and Colloid Chemistry Ministry of EducationSchool of Chemistry and Chemical EngineeringShaanxi Normal UniversityXi'an 710119.ShaanxiChina School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaide 5005SAAustralid

Transition-metal based M-N_4/C catalysts are appealing for electrocatalytic oxygen reduction reaction(ORR) and oxygen evolution reaction(OER). Employing model catalysts, which have well-defined molecular structures and coordination environments, to investigate electrocatalytic performance of M-N_4/C sites for ORR and OER is of fundamental significance. Herein, we reported the use of Co tetra(phenyl)porphyrin 1 and Co tetra(pentafluorophenyl)porphyrin 2 as models to probe the role of Co-N_4/C sites for oxygen electrocatalysis. We showed that Co porphyrin 1 is more efficient than its structural analogue 2 for oxygen electrocatalysis in alkaline aqueous solutions, indicating that the electronrich Co-N_4/C site is more favored when noncovalently adsorbed on carbon supports. This work inspires rational design of reaction-oriented catalysts for sustainable energy storage and conversion technologies.

关键词： Molecular electrocatalysis Model catalyst Oxygen evolution reaction Oxygen reduction reaction Porphyrin

Electron transfer to direct oxidation of aqueous organics by perovskites

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Nano Research 2023年第5期16卷 6316-6325页

作者： Tao Kong Yuxian Wang Shenning Liu Ya Liu Menghan Zhou Bofeng Li xiaoguang duan Chunmao Chen Shaobin Wang State Key Laboratory of Heavy Oil Processing State Key Laboratory of Petroleum Pollution ControlChina University of Petroleum(Beijing)Beijing 102249China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA 5005Australia

The residual of oxidant chemicals in advanced oxidation processes(AOPs)resulted in both economic cost and secondary ***,we report a direct oxidation of phenolic pollutants induced by Ca-Mn-O perovskites without using an *** by one-electron transfer process(ETP)from the phenolics to the Ca-Mn-O perovskites,this direct oxidation proceeds in fast reaction kinetics with activation energy of 51.4 kJ/mol,which was comparable with those AOPs-based catalytic ***,mineralization and polymerization reactions occurred on the Ca-Mn-O surface and ensured the complete removal of *** high spin state Mn(III)within Ca-Mn-O structure was the dominant active site for this *** elongated axial Mn(III)–O bonds within the[MnO_(6)]octahedron facilitated the acceptance of the electrons from the phenolics and thus promoted the initiation of the direct oxidation ***(III)in the high spin state can also activate dissolved O_(2)to produce singlet oxygen(^(1)O_(2))for a fast removal of *** mixed Mn(III)/Mn(IV)within Ca-Mn-O accelerated the ETP by enhancing the electrical *** efficient Ca-Mn-O-induced ETP for removal of organic contaminants casts off the dependence on external chemical and energy inputs and provides a sustainable approach for transforming the toxic organic pollutants into value-added polymers.

关键词： Ca-Mn-O perovskites surface direct oxidation electron transfer process spin state regulation