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Synthesis of Ce/BiFeO_(3)composites and activation of persulfate for pharmaceutical wastewater degradation

Journal of Rare Earths 2025年第3期43卷 462-469,I0002页

作者： Yanting Zuo Shi Cheng Ziwen Guo Haolin Liu Huaicheng Zhang Ji Wu Ziwu Fan Wentao Li Aimin Li Key Laboratory of Taihu Basin Water Resources Management Ministry of Water ResourcesNanjing Hydraulic Research InstituteNanjing 210029China School of Urban Construction Changzhou UniversityChangzhou 213164China School of Resources and Environmental Engineering Jiangsu University of TechnologyChangzhou 213001China State Key Laboratory of Pollution Control and Resources Reuse School of the EnvironmentNanjing UniversityNanjing 210023China School of Environment and Safety Engineering Nanjing Polytechnic InstituteNanjing 210048China

Sulfamethoxazole(SMZ)is a prevalent and recalcitrant micropollutant in water,posing a significant threat to both aquatic organisms and human ***,investigating the removal of SMZ is of critical *** order to investigate the effect of rare earth metal doping on the performance of activated persulfate oxidative degradation of SMZ,BiFeO_(3)with different Ce doping amounts was successfully prepared by a hydrothermal ***,it was characterized by X-ray diffraction(XRD),scanning electron microscopy(SEM),scanning transmission electro n microscopy(STEM)and Brunauer-Emmett-Teller(BET)*** performance of porous Ce/BiFeO_(3)in the catalytic activation of persulfate(PMS)for the degradation of SMZ in water was investigated using SMZ solution as a simulated *** impact of Ce doping rate,catalyst dosage,temperature variations,common anions,natural organic matter,and PMS concentration on SMZ removal was systematically *** characterization results show that the octahedral rhombic structure of Ce can be observed on the surface of this doped catalyst,and Ce doping does not change the crystalline shape of Ce/BiFeO_(3).The specific surface area of the doped catalyst increases,accompanied by an enlargement of pore size,thereby enhancing the catalyst's adsorption capacity and resistance to contamination by *** the optimal conditions of 25℃,SMZ concentration of 20 mg/L,0.8 g/L PMS and 0.3 g/L 0.05Ce/BiFeO_(3)catalyst,the removal rate of SMZ reaches approximately 95%within35 min of reaction *** after five cycles of reuse,the degradation rate of SMZ remains above 88%,demonstrating the catalyst's good stability and *** experiments show that SO_(4)^(·-),·OH,1O_(2)and O_(2)^(·-)are involved in the catalytic degradation process,with 1O_(2)playing a dominant role.

关键词： Ce/BiFeO_(3) Persulfate Sulfamethoxazole Sulfate radicals Rare earths

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Carbothermal Diffusion Reaction Synthesis of CrN/carbon Nanofiber for Efficient Electrosorption of Fluoride Ions from Water

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Advanced Fiber Materials 2024年第6期6卷 1969-1979页

作者： Xuran Yang Hao Zhang Jiamin Gao Yiyuan Yao Yujun Zhou Junwen Qi Yue Yang Zhigao Zhu Jiansheng Li Key Laboratory of Jiangsu Province for Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China

Development of novel electrode materials with the integration of structural and compositional merits can essentially improve the electrosorption ***,we demonstrate a new strategy,named as carbothermal diffusion reaction synthesis(CDRS),to fabricate binder-free CrN/carbon nanofiber electrodes for efficient electrosorption of fluoride ions from *** CDRS strategy involves electrospinning MIL-101(Cr)particles with polyacrylonitrile(PAN)to form one-dimensional nanofiber,followed by spatial-confined pyrolysis process in which the nitridation reaction occurred between nitrogen element from PAN and chromium element from MIL-101(Cr),resulting macroscopic,free-standing electrodes with well dispersed ultrafine CrN nanoparticles on porous nitrogen enriched carbon *** expected,the F-adsorption capacity reached 47.67 mg g-1 and there was no decrease in F-removal after 70 adsorption regenerations in 50 mg L-1 F-solution at 1.2 *** adsorption mechanism of F-was explored by X-ray photoelectron spectroscopy(XPS)and density functional theory(DFT).The enhanced F-adsorption capacity was achieved by the reversible Cr4+/Cr3+redox pair provided by CrN and the electrical double layer capacitance produced by carbon *** study provides guidance on synergistic modulation of shaping and composition optimization of novel functional materials for electrosorption,catalysis,and supercapacitor applications.

关键词： Defluorination Electrosorption MIL-101(Cr) CrN Electrospinning Binder-free

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The photo-based treatment technology simultaneously removes resistant bacteria and resistant genes from wastewater

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Journal of Environmental Sciences 2025年第2期148卷 243-262页

作者： Zicong Guo Xiang Tang Wenjun Wang Zhangxiong Luo Yuxi Zeng Nan Zhou Zhigang Yu Dongbo Wang Biao Song Chengyun Zhou Weiping Xiong College of Environmental Science and Engineering and Key Laboratory of Environmental Biology and Pollution Control(Ministry of Education) Hunan UniversityChangsha 410082China Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation College of Resources and EnvironmentFujian Agriculture and Forestry UniversityFuzhou 350002China School of Resources and Environment Hunan University of Technology and BusinessChangsha 410205China Australian Centre for Water and Environmental Biotechnology The University of QueenslandBrisbaneQLD 4072Australia

Because of the recent widespread usage of antibiotics,the acquisition and dissemination of antibiotic-resistance genes(ARGs)were prevalent in the majority of ***,the biological wastewater treatment processes used in wastewater treatment plants have a limited efficiencies of antibiotics resistant bacteria(ARB)disinfection and ARGs degradation and even promote the proliferation of ***,ARB and ARGs in effluent pose potential risks if they are not further *** oxidation is considered a promising disinfection technology,where the photocatalytic process generates many free radicals that enhance the interaction between light and deoxyribonucleic acid(DNA)for ARB elimination and subsequent degradation of *** reviewaims to illustrate the progress of photocatalytic oxidation technology for removing antibiotics resistant(AR)from wastewater in recent *** discuss the sources and transfer of ARGs in *** overall removal efficiencies of ultraviolet radiation(UV)/chlorination,UV/ozone,UV/H_(2)O_(2),and UV/sulfate-radical based system for ARB and ARGs,as well as the experimental parameters and removal mechanisms,are systematically *** contribution of photocatalytic materials based on TiO_(2) and g-C_(3)N_(4) to the inactivation of ARB and degradation of ARGs is highlighted,producingmany free radicals to attack ARB and ARGs while effectively limiting the horizontal gene transfer(HGT)in ***,based on the reviewed studies,future research directions are proposed to realize specific photocatalytic oxidation technology applications and overcome current challenges.

关键词： Antibiotics resistant genes Antibiotics resistant bacteria Photocatalytic oxidation

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3D-printed MoS_(2)/Ni electrodes with excellent electro-catalytic performance and long-term stability for dechlorination of florfenicol

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Journal of Environmental Sciences 2024年第3期137卷 420-431页

作者： Jianhui Xu Pengxu Wang Shenggui Chen Lei Li Dan Li Yunfei Zhang Qi Wu Jinhong Fan LumingMa School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China School of Art and Design Guangzhou Panyu PolytechnicGuangzhou 511483China National Engineering Research Center for Urban Pollution Control State Key Laboratory of Pollution Control and Resources ReuseCollege of Environmental Science and EngineeringTongji UniversityShanghai 200092China Dongguan Institute of Science and Technology Innovation Dongguan University of TechnologyDongguan 523808China School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808China

Here,we report the production of 3D-printed MoS_(2)/Ni electrodes(3D-MoS_(2)/Ni)with longterm stability and excellent performance by the selective laser melting(SLM)*** a cathode,the obtained 3D-MoS_(2)/Ni could maintain a degradation rate above 94.0%for forfenicol(FLO)when repeatedly used 50 times in *** also found that the removal rate of FLO by 3D-MoS_(2)/Ni was about 12 times higher than that of 3D-printed pure Ni(3D-Ni),attributed to the improved accessibility of H^(*).In addition,the electrochemical characterization results showed that the electrochemically active surface area of the 3D-MoS_(2)/Ni electrode is about 3-fold higher than that of the 3D-Ni electrode while the electrical resistance is 4 times *** on tert-butanol suppression,electron paramagnetic resonance and triple quadrupole mass spectrometer experiments,a“dual path”mechanism and possible degradation pathway for the dechlorination of FLO by 3D-MoS_(2)/Ni were ***,we also investigated the impacts of the cathode potential and the initial pH of the solution on the degradation of ***,this study reveals that the SLM 3D printing technique is a promising approach for the rapid fabrication of high-stability metal electrodes,which could have broad application in the control of water contaminants in the environmental field.

关键词： 3D-print Electroreduction MoS_(2)/Ni Antibiotic Florfenicol

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Direct pyrolysis to convert biomass to versatile 3D carbon nanotubes/mesoporous carbon architecture:conversion mechanism and electrochemical performance

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Frontiers of Chemical Science and Engineering 2023年第6期17卷 679-690页

作者： Chenxi Xu Shunli Li Zhaohui Hou Liming Yang Wenbin Fu Fujia Wang Yafei Kuang Haihui Zhou Liang Chen College of Chemistry and Chemical Engineering Hunan UniversityChangsha 410082China Key Laboratory of Hunan Province for Advanced Carbon-Based Functional Materials School of Chemistry and Chemical EngineeringHunan Institute of Science and TechnologyYueyang 414006China Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle Nanchang Hangkong UniversityNanchang 330063China School of Materials Science and Engineering Georgia Institute of TechnologyAtlantaGA 30332USA

The massive conversion of resourceful biomass to carbon nanomaterials not only opens a new avenue to effective and economical disposal of biomass,but provides a possibility to produce highly valued functionalized carbon-based electrodes for energy storage and conversion *** this work,biomass is applied to a facile and scalable one-step pyrolysis method to prepare three-dimensional(3D)carbon nanotubes/mesoporous carbon architecture,which uses transition metal inorganic salts and melamine as initial *** role of each employed component is investigated,and the electrochemical performance of the attained product is *** component and precise regulation of their dosage is proven to be the key to successful conversion of biomass to the desired carbon *** to the unique 3D architecture and integration of individual merits of carbon nanotubes and mesoporous carbon,the as-synthesized carbon nanotubes/mesoporous carbon hybrid exhibits versatile application toward lithium-ion batteries and Zn-air ***,a significant guidance on effective conversion of biomass to functionalized carbon nanomaterials can be shown by this work.

关键词： biomass direct pyrolysis 3D CNTs MC hybrid lithium-ion batteries Zn-air batteries

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In situ synthesis of oxygen-doped carbon quantum dots embedded in MIL-53(Fe) for efficient degradation of oxytetracycline

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Environmental Science and pollution Research 2024年第18期31卷 26686-26698页

作者： Du, Chunyan Lv, Yinchu Yu, Hanbo Zhang, Yin Zhu, Hao Dong, Wei Zou, Yulv Peng, Huaiyuan Zhou, Lu Wen, Xiaofeng Cao, Jiao Jiang, Jingyi School of Hydraulic and Environmental Engineering Changsha University of Science & ampTechnology Changsha410114 China Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province Changsha410114 China Engineering and Technical Center of Hunan Provincial Environmental Protection for River-Lake Dredging Pollution Control Changsha410114 China

Introducing carbon quantum dots (CQDs) into photocatalysts is believed to boost the charge transfer rate and reduce charge complexation. Doping heteroatoms such as N, S, or P enable CQDs to have an uplifting electron transfer capability. However, the application of oxygen-doped CQDs to improve the performance of photocatalysts has rarely been reported. Herein, a type of carbon-oxygen quantum dots (COQDs) was in situ embedded into MIL-53(Fe) to aid peroxydisulfate (PDS)-activated degradation of oxytetracycline (OTC) under visible light irradiation. The successful embedding of COQDs was confirmed by XRD, FT-IR, XPS, SEM, and TEM techniques. Photoelectrochemical testing confirmed its better performance. The prepared COQDs1/MIL-53(Fe) showed 88.2% decomposition efficiency of OTC in 60 min, which was 1.45 times higher than that of pure MIL-53(Fe). In addition, the performance of the material was tested at different pH, OTC concentrations, catalyst dosing, and PDS dosing. It was also subjected to cyclic testing to check stability. Moreover, free radical trapping experiments and electron paramagnetic resonance were conducted to explore the possible OTC deterioration mechanism. Our work provides a new idea for the development of MOFs for water treatment and remediation. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.

关键词： Wastewater treatment

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Fe/BC co-conditioners with environmental and economic benefits on composting:reduced NH_(3)emissions and improved fertilizer quality

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Biochar 2024年第1期6卷 50-65页

作者： Jixiang Wang Huifang Xie Jun Wu Weijiang He Xi Zhang Junxia Huang Yanfang Feng Lihong Xue Key Laboratory of Agro-Environment in Downstream of Yangtze Plain Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and EnvironmentJiangsu Academy of Agricultural SciencesNanjing 210014China. Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China. Key Laboratory of Integrated Regulation and Resources Development of Shallow Lakes Ministry of EducationCollege of EnvironmentHohai UniversityNanjing 210098China.

The significant volatilization of NH_(3)during aerobic composting causes nitrogen(N)losses and environmental *** iron(Fe)and biochar(BC)can influence the N conversion process in *** application can delay the maturation of materials,while biochar can enhance the quality of organic *** combination of these two conditioners may help decrease NH_(3)emissions and improve organic fertilizer ***,this study investigates the effects of different doses of FeCl_(3)and BC on NH_(3)emissions and organic fertilizer quality during *** results demonstrated that Fe/BC co-conditioners reduced the accumulation of NH_(3)emissions during composting by 11.1-48.2%,increased the total nutrient content by 0.6-15.3%,and enhanced economic and environmental benefits by 0.1-23.6$t^(−1).At the high-temperature stage of composting,Fe/BC co-conditioners decreased the pH by 0.3-1.2,but there was no significant difference compared to the control at the end of composting,and they did not affect compost *** structural equation model analysis suggested that the reduction in NH_(3)emis-sions was related to ammonia-oxidizing bacteria(AOB),NH_(4)^(+)-N,and total nitrogen(TN).As a result,the Fe/BC co-conditioners reduced NH_(3)emissions by lowering the pH at the beginning of composting and increasing the content of NH_(4)^(+)-*** study concludes that Fe/BC co-conditioners could complement each other to significantly reduce NH_(3)emissions and improve the quality of organic fertilizers.

关键词： Aerobic composting Biochar Organic fertilizer NH_(3)emissions FeCl_(3)

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Steam disinfection enhances bioaccessibility of metallic nanoparticles in nano-enabled silicone-rubber baby bottle teats,pacifiers,and teethers

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Journal of Environmental Sciences 2024年第2期136卷 161-171页

作者： Yu Su BinWang Xin Tong Shuchuan Peng Sijin Liu Baoshan Xing Rong Ji State Key Laboratory of Pollution Control and Resource Reuse School of the EnvironmentNanjing UniversityNanjing 210023China School of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China Stockbridge School of Agriculture University of MassachusettsAmherstMA 01003USA

Nano-enabled silicone-rubber articles for feeding or chewing could be a source of metallic nanoparticles(NPs)directly exposed to infants and young ***,the impact of steam disinfection on release of NPs and the related potential risks to children's health are ***,we investigated contents and form of Ag and Zn in 57 nano-enabled silicone-rubber baby bottle teats,pacifiers,and teethers of seven countries and examined the impacts of steam disinfection on in vitro bioaccessibility(IVBA)of Ag and Zn in the *** 89%articles had a mixture of Ag-and Zn-containing NPs and the teethers had relatively high Ag and Zn contents(up to 501 and 254μg/g,respectively).Steam disinfection caused rubber decomposition into micro(nano)plastics(0.54-15.7μm)and NP release from the interior of bulk rubber and micro-sized plastics,thus enhancing the IVBA of Ag and Zn by up to 5.5 *** findings provide insights into mechanisms for NP release by steam *** oral exposure risk assessment suggested low health concerns on individual metal release,our study points out the need to assess the potential health risks of child co-exposure to metallic NPs and micro(nano)plastics.

关键词： Silicone rubber Metallic nanoparticles Micro(nano)plastics Bioaccessibility Children's health

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Comparison of freshwater microbial communities in water and microplastics surfaces:insights from Dongting Lake,China

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Journal of Oceanology and Limnology 2025年第2期43卷 545-558页

作者： Yiming QIU Xiaofeng WEN Ziyi XIANG Zixiang CHEN Ziyi QIU Meinan PENG Shihan ZHONG Jiali HUANG Weicheng ZHOU Lingshi YIN School of Hydraulic and Environmental Engineering Changsha University of Science&TechnologyChangsha 410114China Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province Changsha 410114China Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province Changsha 410114China College of Water Resources&Civil Engineering Hunan Agricultural UniversityChangsha 410128China School of Chemistry and Environmental Science Xiangnan UniversityChenzhou 423000China

In recent years,microplastics(MPs)in freshwater lake have been receiving increasing attention;however,the microbial communities on the surface of MPs have not been well *** investigate the potential risk posed by MPs to the lake ecosystem and its surface microbial community structure,MPs samples were collected in September 2023 in the freshwater Dongting Lake,hunan,China,at five sites,and the differences in bacterial species community composition and structure between MPs and water samples were *** show that MPs(13.71±3.32 items/L)in the samples were mostly black in color,fiber in shape,and PES in composition,and those<0.5 mm in size are *** bacterial composition in water was different from that on *** phylum level,Proteobacteria,Actinobacteria,Cyanobacteria,and Bacteroidetes were dominated in relative abundance in both water and *** was more abundant in MPs than in *** relative abundance of Bacteroidota and Actinobacteriota was significantly lower in MPs than in *** genus level,Pantoea and Pseudomonas were potentially pathogenic genera in MPs *** presence of Cyanobacteria and pathogenic bacteria is undoubtedly a potential risk to the deterioration of the water *** study revealed the difference in the distribution of bacterial community in water and MPs in Dongting Lake and provided new perspectives to further understanding of MPs pollution in freshwater lakes.

关键词： freshwater microplastic(MP) microbial community ecological risk

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In-situ synthesis of Z-scheme CeO_(2)@WO_(3) heterojunction with aromatic rings as electron medium for efficient photocatalytic degradation of perfluorobutane sulfonate

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Journal of Rare Earths 2025年第3期43卷 470-479,I0002页

作者： Shihai Cao Haocheng Yang Cheng Cheng Jinheng Dai Shuaishuai Lu Yao Lu College of Environmental Engineering Nanjing Institute of TechnologyNanjing211167China Jiangsu Environmental Engineering Technology Co. Ltd.Nanjing210019China Key Laboratory of Jjiangsu Province for Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing210094China School of Environment and Safety Engineering School of Emergency ManagementInstitute of Environment and EcologyJiangsu UniversityZhenjiang 212013China Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment Suzhou University of Science and TechnologySuzhou215009China

Photocatalytic technology has been proven to be a simple and effective method for degrading recalcitrant organic *** this study,a series of Z-scheme heterojunction nanocomposites composed of CeO_(2)and terephthalic acid-modified WO_(3) was prepared and further used as photocatalysts for perfluorobutane sulfonate(PFBS)*** this design,terephthalic acid was used as an electron recombination center and heterojunction mediator,which effectively enhances the migration ability of electron-hole pairs and the physicochemical stability of the *** addition,in situ synthesis of CeO_(2)onto the WO_(3) surface by the coordinate bond between terephthalic acid and Ce ions can avoid CeO_(2)*** a result,the CeO_(2)@WO_(3) photocatalyst exhibits excellent PFBS degradation ability(94%for CeO_(2)@WO_(3) vs.19%for CeO_(2)).After the fifth cyclic degradation experiment,the CeO_(2)@WO_(3) photocatalyst still maintains stable degradation ***,the reaction mechanism of the PFBS in CeO_(2)@WO_(3) photocatalytic process was analyzed by free radical trapping experiment and liquid chromatography tandem mass spectrometry(LC-MS)*** study provides new insights for constructing Z-scheme heterojunction and demonstrates that CeO_(2)@WO_(3) photocatalysts possess a promising prospect for degrading PFBS pollutants.

关键词： CeO_(2) WO_(3) Photocatalytic Z-Scheme heterojunction Perfluorobutane sulfonate(PFBS) Rare earths

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