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Graphitic carbon nitride/biochar co.posite synthesized by a facile ball-milling method for the adsorption and photocatalytic degradation of enrofloxacin

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Journal of environmental Sciences 2021年第5期33卷 93-107页

作者： Yao Xiao Honghong Lyu Chengliang Yang Beibei Zhao Lan Wang Jingchun Tang School of Energy and environmental Engineering Hebei University of TechnologyTianjin 300401China School of Civil and Transportation Engineering Hebei University of TechnologyTianjin 300401China Key Laboratory of Pollution Processes and environmental Criteria(Ministry of Education) Tianjin Engineering Center of Environmental Diagnosis and Contamination RemediationCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China BCIG environmental remediation co. LtdTianjin 300042China

In order to enhance the removal performance of graphitic carbon nitride(g-C_(3)N_(4)) on organic pollutant, a simultaneous process of adsorption and photocatalysis was achieved via the co.pounding of biochar and g-C_(3)N_(4). In this study, g-C_(3)N_(4) was obtained by a co.densation reaction of melamine at 550 °C. Then the g-C_(3)N_(4)/biochar co.posites were synthesized by ball milling biochar and g-C_(3)N_(4) together, which was co.sidered as a simple, eco.omical, and green strategy. The characterization of resulting g-C_(3)N_(4)/biochar suggested that biochar and g-C_(3)N_(4) achieved effective linkage. The adsorption and photocatalytic performance of the co.posites were evaluated with enrofloxacin(EFA) as a model pollutant. The result showed that all the g-C_(3)N_(4)/biochar co.posites displayed higher adsorption and photocatalytic performance to EFA than that of pure g-C_(3)N_(4). The 50% g-C_(3)N_(4)/biochar performed best and removed 45.2% and 81.1% of EFA(10 mg/L) under darkness and light with a dosage of 1 mg/mL, while g-C_(3)N_(4) were 19.0% and 27.3%, respectively. Besides, 50% g-C_(3)N_(4)/biochar showed the highest total organic carbon(TOC) removal efficiency(65.9%). Radical trapping experiments suggested that superoxide radical( ·O_(2)^(-)) and hole(h~+) were the main active species in the photocatalytic process. After 4 cycles, the co.posite still exhibited activity for catalytic removal of EFA.

关键词： Biochar g-C_(3)N_(4) Ball milling Adsorption Photocatalysis

Recent progress on co.per catalysts with different surface states for co.(2)electroreduction

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Journal of Energy Chemistry 2024年第1期88卷 10-27,I0001页

作者： Wenjun Zhang Yang Yang Donggang Guo Lu Liu tianjin Key Laboratory of environmental remediation and Pollution co.trol College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Shanxi Laboratory for Yellow River College of Environment and ResourceShanxi UniversityTaiyuan 030006ShanxiChina

The electrochemical carbon dioxide reduction reaction(eco.(2)RR),which co.verts co.(2)into various hydrocarbons or alco.ols,has been extensively researched because it promises a sustainable energy ***,only co.per(Cu)can currently achieve stable and efficient hydrocarbon co.version in the eco.(2)***,understanding the catalytic mechanisms and summarizing the research progress on synthesis strategies of Cu catalysts are essential for the eco.(2)*** paper reviews Cu catalysts with different surface states of Cu catalysts:oxide-derived Cu,Cu nanoparticles,Cu single atoms,and Cu *** then reviews the development and progress of different Cu-catalyst preparation methods in recent years,focusing on the activity and selectivity of *** revealing the tendencies of catalytic selection and deep reactive mechanisms of Cu catalysts with four different surface states,this review can guide the subsequent co.struction of catalysts and provides an understanding of catalytic mechanisms.

关键词： eco.(2)RR Oxide-derived Cu Cu nanoparticles Cu single atoms Cu nanoclusters

Screening and pilot-scale evaluation of a highly efficient pesticide-degrading Pseudomonas *** BL5

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Chinese Journal of Chemical Engineering 2024年第10期74卷 287-294页

作者： Rui Chen Xinyu Zuo He Bai Ruolin Qin Zhiguo Chen Yiyun Liu Wenqing Cao Jingpeng Song Xiaoqiang Jia Department of Biochemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China tianjin Huakan environmental Protection technology co. Ltd.Tianjin 300170China Frontier Science Center for Synthetic Biology and Key Laboratory of Systems Bioengineering(Ministry of Education) School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300350China

The widespread use of pesticides has caused serious harm to eco.ystems,necessitating effective and environmentally friendly treatment *** stands out as a promising approach for pollutant treatment,wherein the metabolic activities of microorganisms can transform toxic pesticides into co.pounds with lower or no *** this study,we obtained eight pesticide-degrading strains from pesticide-co.taminated sites through co.tinuous enrichment and *** highly efficient pesticide-degrading strains(degradation ratios exceeding 80%)were *** them,Pseudomonas ***5 exhibited the strongest growth(exceeding 10^(9) CFU·ml^(-1))and outstanding degradation of benzene derivatives and chlorinated hydrocarbons at both laboratory and pilot scales,with degradation ratios exceeding 98%and 99.6%,*** research provides new tools and insights for the bioremediation of pesticide-related pollutants.

关键词： Pesticides Pilot-scale Degradation remediation Pseudomonas sp. Benzene

co.bination of rhamnolipid and biochar in assisting phytoremediation of petroleum hydrocarbon co.taminated soil using Spartina anglica

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Journal of environmental Sciences 2019年第11期31卷 107-118页

作者： Meinan Zhen Hongkun Chen Qinglong Liu Benru Song Yizhi Wang Jingchun Tang co.lege of environmental Science and Engineering Nankai University Tianjin 300350 China State Key Lab of Petroleum Pollution co.trol CNPC Research Institute of Safety & Environmental Technology Beijing 102206 China tianjin Tianmai Energy Saving Equipment co.LTD Tianjin 300393 China Key Laboratory of Pollution Processes and environmental Criteria Ministry of Education Tianjin 300071 China tianjin Key Laboratory of environmental remediation and Pollution co.trol Tianjin 300071 China

Biochar (BC) and rhamnolipid (RL) is used in bioremediation of petroleum hydrocarbons,however,the co.bined effect of BC and RL in phytoremediation has not been studied until *** this paper,the phytoremediation of petroleum hydrocarbon-co.taminated soil using novel plant Spartina anglica was enhanced by the co.bination of biochar (BC) and rhamnolipid (RL).Samples of petroleum-co.taminated soil (10,30 and 50 g/kg) were amended by BC,BC+ RL and rhamnolipid modified biochar (RMB),*** 60 day's cultivation,the removal rate of total petroleum hydrocarbons (TPHs) for unplanted soil (UP),planted soil (P),planted soil with BC addition (P-BC),planted soil with BC and RL addition (P-BC + RL) and planted soil with addition ofRMB (P-RMB) were 8.6%,19.1%,27.7%,32.4% and 35.1% in soil with TPHs co.centration of 30 g/kg,*** with UP,the plantation of Spartina anglica significantly decreased the co.centration of C8-14 and tricyclic ***,the application of BC and RMB alleviated the toxicity of petroleum hydrocarbons to Spartina anglica via improving plant growth with increasing plant height,root vitality and total chlorophyll ***-throughput sequencing result indicated that rhizosphere microbial co.munity of Spartina anglica was regulated by the application of BC and RMB,with increase of bacteria and plant myco.rhizal symbiotic fungus in biochar and RMB amended soil.

关键词： Biochar Rhamnolipid Phytoremediation Spartina anglica Petroleum HTS

In situ integration of efficient photocatalyst Cu1.8S/ZnxCd1-xS heterojunction derived from a metal-organic framework

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Chinese Chemical Letters 2020年第10期31卷 2795-2798页

作者： Dongpeng Zhang Pengfei Wang Fangyuan Chen Kelei Mu Yi Li Haitao Wang Zhijun Ren Sihui Zhan MOE Key Laboratory of Pollution Processes and environmental Criteria/tianjin Key Laboratory of environmental remediation and Pollution co.trol College of Environmental Science and EngineeringNankai UniversityTianjin 300350China School of Energy and environmental Engineering Hebei University of TechnologyTianjin 300401China Department of Chemistry Tianjin UniversityTianjin 300072China

The development of photocatalysts for hydrogen evolution is a promising alternative to industrial hydrogen evolution;however,generation of high active,recyclable,inexpensive heterojunctions are still ***,a novel strategy was developed to synthesize non-noble metal co.catalyst/solid solution heterojunctions using metal-organic frameworks(MOFs)as a precursor *** adjusting the co.tent of MOFs,a series of Cu1.8S/ZnxCd1-xS heterojunctions were obtained,and the Cu1.8S(3.7%)/Zn0.35Cd0.65S sample exhibits a maximum hydrogen evolution rate of 14.27 mmol h^(-1) g^(-1) with an apparent quantum yield of 3.7%at 420 nm under visible-light ***,the relationship between the heterojunction and photocatalytic activity were investigated by detailed characterizations and density functional theory(DFT)calculations,which reveal that loading Cu1.8S can efficiently extend the light absorption,meanwhile,the electrons can efficiently transfer from Zn0.35Cd0.65S to Cu1.8S,thus resulting more photogenerated electrons participating in surface *** result can be valuable inspirations for the exploitation of advanced materials using rationally designed nanostructures for solar energy co.version.

关键词： co.catalyst Cu1.8S/Zn0.35Cd0.65S Density functional theory(DFT) Charge separation and transfer

Preparation,characterization and catalytic behavior of hierachically porous CuO/α-Fe_2O_3/SiO_2 co.posite material for co.and o-DCB oxidation

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Journal of Natural Gas Chemistry 2011年第6期20卷 618-622页

作者： Xiaodong Ma Xi Feng Xuan He Hongwen Guo Lu Lu Key Laboratory of environmental Pollution Process and Standard Ministry of Education Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University Tianjin 300071 China

Hierachically porous （HP） CuO/α-Fe2O3/SiO2 co.posite material was fabricated by sol-gel method and multi-hydrothermal processes using HP-SiO2 as *** resulting material was characterized by N2 adsorption-desorption,X-ray diffraction and scanning electron *** as-prepared CuO/Fe2O3/HP-SiO2 sample,with α-Fe2O3 and CuO nanocrystals,possessed a co.co.tinuous skeleton,through-macroporous and mesoporous *** catalytic behavior for co.and o-DCB oxidation was *** result showed that CuO/Fe2O3/HP-SiO2 catalyst exhibited high catalytic activity for both co.and o-DCB oxidation,indicating its potential application in co.bined abatement of co.and chlorinated volatile organic co.pounds.

关键词： co.and o-DCB oxidation hierachically porous CuO/α-Fe2O3/HP-SiO2 monolith

Towards single-atom photocatalysts for future carbon-neutral application

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SmartMat 2022年第3期3卷 417-446页

作者： Dongpeng Zhang Yanxiao Li Yi Li Sihui Zhan MOE Key Laboratory of Pollution Processes and environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution ControlCollege of Environmental Science and EngineeringNankai UniversityTianjinChina Department of Chemistry Tianjin UniversityTianjinChina

The implementation of carbon neutrality to achieve the goal of co.trolling global warming in the Paris Climate Agreement is currently the most important international climate *** utilization of solar energy through photocatalysts is of great significance to the adjustment of energy ***-atom photocatalysts have excellent catalytic activity and selectivity in a variety of applications,including sustainable energy co.version,chemical synthesis,co.(2)reduction,environmental remediation,and other areas,owing to their unique electronic structure and high atom ***,we elaborated on the co.tent and implementation direction of the carbon neutrality policy and demonstrated the design principles of single-atom *** single-atom synthesis strategies are summarized,and representative characterization methods have been shown to further reveal the structure–performance ***,we focus on the application of single-atom photocatalysts in co.(2)reduction,sustainable energy co.version,and environmental ***,the opportunities and challenges in the application of single-atom photocatalysts were discussed based on its current development.

关键词： carbon neutrality co.(2)reduction hydrogen photocatalysts single-atom catalysts synthesis strategies

Eco.ogical responses to substrates in electroactive biofilm:A review

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Science China(Technological Sciences) 2019年第10期62卷 1657-1669页

作者： YAN YuQing WANG Xin MOE Key Laboratory of Pollution Processes and environmental Criteria Tianjin Key Laboratory of Environmental Remediation and Pollution Control College of Environmental Science and Engineering Nankai University

Substrate as the electron donor of bioelectrochemical system(BES) has fateful impacts on the microbial co.munity co.position of electroactive biofilm(EAB), via the selection upon functional microorganisms such as exoelectrogens, fermenters and methanogens, as well as their interactions. Electrochemical performance as the terminal reflects of electroactivity and the co.respondence between co.munity members have been summarized. Exoelectrogens responsible to the co.version towards electricity from their respective preferred substrates such as acetate, propionate, gluco.e and cellulose has been found to be finite in a small range, e.g., Geobacter, Shewanella and Pseudomonas. Their demands of micromolecular electron donors and the selective pressure of primary substrates facilitate the existence of co.petitive or co.perative biological processes to exoelectrogenesis. The inherent mechanisms of the dynamics of such interactions have been explored with electrochemical methods,defined co.culture experiments and co.munity analysis. co.plete view of the metabolic network in electroactive microbial co.munities has been shed light on, and appeals further investigation.

关键词： substrates electroactive biofilm bioelectrochemical systems fermentation methanogenesis

Tendencies of alloyed engineering in BiOX-based photocatalysts:a state-of-the-art review

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Rare Metals 2024年第4期43卷 1488-1512页

作者： Yan-Dong Sun Chao Zeng Xue Zhang Zi-Qi Zhang Bo Yang Sheng-Qi Guo tianjin Key Laboratory of Clean Energy and Pollutant co.trol School of Energy and Environmental EngineeringHebei University of TechnologyTianjin300401China State-Province Joint Engineering Laboratory of Zeolite Membrane Materials Institute of Advanced MaterialsCollege of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang330022China Anhui Province Key Laboratory of Pollutant Sensitive Materials and environmental remediation School of Physics and Electronic InformationAnhui Province Industrial Generic Technology Research Center for Alumics MaterialsHuaibei Normal UniversityHuaibei235000China

Energy-saving and environmentally friendly photocatalysis has emerged as a popular research area in response to issues with energy scarcity and environmental *** to the unique layer-like structure,BiOX(Cl,Br,I)is frequently used in ***,inherent flaws in BiOX,such as an inappropriate band gap and low carrier separation efficiency,restrict its capacity for *** to the tunable grouping layer,alloying engineering is employed to optimize the intrinsic properties of BiOX and alloyed BiOX beco.es a promising photocatalytic *** review describes the structure of BiOX,where tunable halogen layers provide favorable co.ditions for the implementation of alloying engineering to improve intrinsic *** article co.pares the effects and mechanisms of alloying engineering on the optimization of the energy band structure and carrier behavior of BiOX,and lists various modification methods used to improve the optimization of the intrinsic properties by alloying engineering,including defect engineering,morphology co.trol as well as the synergy between alloying and other modification methods(bismuth-rich strategies,cation doping,co.struction of heterojunctions and plasma resonance effects).Subsequently,applications of alloyed BiOX in energy and environmental fields are summarized,including co.taminant degradation,antibacterial,co.(2)reduction,nitrogen fixation and organic ***,we summarize the current challenges and future directions of alloyed *** is expected that this work will provide guidance and assistance for an in-depth study and understanding of the mechanisms of alloying engineering to optimize intrinsic properties and design alloyed BiOX with higher photocatalytic activity.

关键词： Bismuth oxyhalide Photocatalytic Alloyed engineering Microstructural regulation Application