检索结果-南通市图书馆

Journal of Environmental Sciences 2024年第4期138卷 46-61页

作者： Guanlong Yu Kai Yang Yi Yang Yifu Li Qifang Sun Peiyuan Li Wenming Wang Fengming Song Tao Ling Xuejun Peng Zhi Yu Shiquan Sun 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 Hunan Pilot Yanghu Reclaimed Water Co. Ltd.Changsha 410208China China Railway Wuju Group the First Engineering Co. Ltd.Changsha 410117China

It is important to investigate whether combining two modification strategies has a synergistic effect on the activity of *** this manuscript,Fe-doped BiOBr/Bi_(2)WO_(6) heterojunctions were synthesized by a one-pot solvothermal method,and excellent photocatalytic performance was obtained for the degradation of tetracycline hydrochloride(TCH)in water without the addition of *** experiments and characterization,the synergistic effect between Fe ion doping and the BiOBr/Bi_(2)WO_(6) heterojunction was *** Fe/BiOBr/Bi_(2)WO_(6) composite photocatalyst had a beneficial void structure,enhanced visible light response,and could inhibit the recombination of photogenerated support well,which improved the photocatalytic *** presented experiments demonstrate that Fe/BiOBr/Bi_(2)WO_(6) removes 97% of TCH from aqueous solution,while pure BiOBr and Bi_(2)WO_(6) only remove 56% and 65% of TCH,***,the separation and transfer mechanisms of photoexcited carriers were determined in conjunction with the experimental *** study provides a new direction for the design of efficient photocatalysts through the use of a dual co-modification strategy.

关键词： BiOBr/Bi_(2)WO_(6) Fe-doping Dual strategy tetracycline hydrochloride Photodegradation

Construction of ternary CuO/CuFe_(2)O_(4)/g-C_(3)N_(4)composite and its enhanced photocatalytic degradation of tetracycline hydrochloride with persulfate under simulated sunlight

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2022年第2期34卷 59-70页

作者： Lei Wang Xiaolei Ma Guofang Huang Rui Lian Jingwei Huang Houde She Qizhao Wang Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials College of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China School of Environmental Science and Engineering Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of EducationChang'an UniversityXi'an 710054China

In this study,a graphitic carbon nitride(g-C_(3)N_(4))based ternary catalyst Cu O/Cu Fe_(2)O_(4)/gC_(3)N_(4)(CCCN)is successfully prepared thorough calcination *** confirming the structure and composition of CCCN,the as-synthesized composites are utilized to activate persulfate(PS)for the degradation of organic *** using tetracycline hydrochloride(TC)as pollutant surrogate,the effects of initial p H,PS and catalyst concentration on the degradation rate are systematically *** the optimized reaction condition,CCCN/PS is able to give 99%degradation extent and 74%chemical oxygen demand removal in assistance of simulated solar light,both of which are apparently greater than that of either Cu O/Cu Fe_(2)O_(4)and pristine g-C_(3)N_(4).The great improvement in degradation can be assignable to the effective separation of photoinduced carriers thanks to the integration between Cu O/Cu Fe_(2)O_(4)and g-C_(3)N_(4),as well as the increased reaction sites given by the g-C_(3)N_(4)***,the scavenging trials imply that the major oxidative matters involved in the decomposition are hydroxyl radicals(·OH),superoxide radicals(·O_(2)^(-))and photo-induced holes(h^(+)).

关键词： Copper ferrite Graphitic carbon nitride Heterojunction photocatalyst Peroxydisulfate tetracycline hydrochloride

New insights on the enhanced non-hydroxyl radical contribution under copper promoted TiO_(2)/GO for the photodegradation of tetracycline hydrochloride

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2021年第2期33卷 99-109页

作者： Sijia Qian Shengyan Pu Ying Zhang Peng Wang Yingchen Bai Bo Lai State Key Laboratory of Geohazard Prevention and Geoenvironment Protection Chengdu University of TechnologyChengdu 610059China State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Enuironmental SciencesBeijing 100012China State Key Laboratory of Hydraulics and Mountain River Engineering College of Architecture and EnuironmentSichuan Universitychengdu 610065China

TiO_(2)/graphene oxide(GO)as photocatalyst in the photo-degradation of multitudinous pollutants has been extensively *** its low photocatalytic efficiency is attributed to the high band gap energy which lead to low light ***-TiO_(2)/GO was synthesized via the impregnation methods to enhance the catalytic *** Cu-TiO_(2)/GO reaction rate constant for photo-degradation of pollutants(tetracycline hydrochloride,TC)was about 1.4 times that of TiO_(2)/*** 90 min,the removal ratio of Cu-TiO_(2)/GO for TC was 98%,and the maximum degradation ratio occurred at p H *** five cycles,the removal ratio of Cu-Ti O_(2)/GO still exceeded 98%.UV-visible adsorption spectra of Cu-Ti O_(2)/GO showed that its band gap was narrower than TiO_(2)/*** paramagnetic resonance(EPR)spectra test illustrated the generation rate of·O_(2)^(-)and·OH was higher in Cu-TiO_(2)/GO system than TiO_(2)/GO and TiO_(2) *** contribution sequence of oxidative species was·O_(2)^(-)>holes(h+)>·OH in both TiO_(2)/GO and Cu-Ti O_(2)/GO ***,the contribution of·OH in Cu-TiO_(2)/GO was less than that in TiO_(2)/GO during the photo-degradation *** phenomenon was attributed to the better adsorption performance of Cu-Ti O_(2)/GO which could reduce the accessibility of TC to·OH in *** enhanced non-hydroxyl radical contribution could be attributed to that the more other active species or sites on(nearby)the surface of Cu-TiO_(2)/GO generated after doping *** results provide a new perspective for the tradition metal-doped conventional catalysts to enhance the removal of organic pollutants in the environment.

关键词： Traditional metal doping TiO_(2) Graphene oxide Non–hydroxyl radical tetracycline hydrochloride

Preparation and Characterization of Sulfated Cellulose Nanocrystalline and its Composite Membrane for Removal of tetracycline hydrochloride in Water

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2020年第2期3卷 209-215页

作者： Jie Liu Duo Liu Shisheng Liu Zhihong Li Xiaohui Wei Song Lin Minjie Guo College of Chemical Engineering and Materials Science Tianjin University of Science&TechnologyTianjin 300457China Institute of Medical Support Academy of Military SciencesTianjin 300161China

The removal of antibiotic pollutants remaining in the environmental media has been a big challenge ***,we report a facile and green approach to fabricate an eco-friendly composite membrane without addition of any toxic polymers or chemical cross-linking agents to effectively remove the tetracycline hydrochloride in ***,the sulfated cellulose nanocrystalline(CNC) was obtained via hydrolysis of sulfuric acid by using microcrystalline cellulose(MCC) as raw material under ultrasonic *** as-prepared CNC has a nanowhisker dimension with 200.2 ± 110.2 nm in length,15.7 ± 9.3 nm in width,and 7.2 ± 3.1 nm in *** obtained CNC is cellulose type I as determined by X-ray diffraction(XRD),while its crystallinity index(Crl) can reach 82.3%.Then,the composite membrane derived from the obtained CNC and commercial mixed cellulose ester(MCE)membrane was facilely prepared through vacuum dewatering process,which is applied to remove tetracycline hydrochloride(Th) in *** results showed that the removal efficiency of Th through the neat MCE was only28 ± 4%,while it could be improved to 58 ± 5% and 89 11%,respectively,by filtering through composite membranes with different contents of CNC *** effect is derived from the combine factors based on both steric hindrance(sieving) and electrostatic interaction(Donnan) effect of the composite *** development of related CNC materials and composite fabrication processes is in favor of cost-effective and "green"polymer composites for the remediation of increasing antibiotic pollution and the purification of contaminated water nowadays.

关键词： adsorption removal cellulose nanocrystalline composite membrane tetracycline hydrochloride

Photocatalytic Performance of α- and β-Ga_2O_3 for the Degradation of tetracycline hydrochloride in Water

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2015年第11期34卷 1779-1785页

作者：李国平翁文李飞明 College of Chemistry and Environment Minnan Normal University

α- and β-Ga2O3 were prepared via a precipitation method. The as-prepared α- and β-Ga2O3 were characterized by X-ray diffraction （XRD）, N2-sorption BET surface area, UV-vis diffuse reflectance spectra （DRS）, photoluminescence spectroscopy （PL） and electron spin resonancespectroscopy （ESR）. The photocatalytic activities of Ga2O3 were evaluated by the photocatalytic degradation of tetracycline sydrochloride solution. The results showed that the photocatalytic activity of β-Ga2O3 was higher than that of α-Ga2O3 and β-Ga2O3 obtained at the calcination temperature of 900℃, which showed the best photocatalytic activity. The reasons for the differences in photocatalytic activity of Ga2O3 are discussed in terms of crystallinity, surface area, crystals and electronic structures.

关键词： Ga2O3 tetracycline hydrochloride photocatalysis

Study on the Different Photocatalytic Performances for tetracycline hydrochloride Degradation of p-block Metal Composite Oxides Sr_(1.36)Sb_(2)O_6 and Sr_(2)Sb_(2)O_7

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2021年第3期40卷 394-402,275页

作者： HUANG Yi-Wei MAO Jing-Yun QIAN Qing-Rong XUE Hun LIU Yan-Ru College of Environmental Science and Engineering Fujian Key Laboratory of Pollution Control&Resource ReuseFujian Normal UniversityFuzhou 350007China College of Life Sciences Fujian Normal UniversityFuzhou 350117China

p-block metal composite oxides Sr_(1.36)Sb_(2)O_(6) and Sr_(2)Sb_(2)O_(7) synthesized by a hydrothermal method as photocatalysts in the degradation of tetracycline hydrochloride under UV light irradiation have been extensively *** effects of synthesis conditions on the photocatalytic activity were *** Sr_(1.36)Sb_(2)O_(6)-100°C-24 h-5 and Sr_(2)Sb_(2)O_(7)-150℃-24 h^(-2) samples prepared under optimal conditions exhibited remarkably different photocatalytic *** essential factors influencing the difference of photocatalytic performance were *** results showed that the different photocatalytic activities observed for Sr_(1.36)Sb_(2)O_(6)and Sr_(2)Sb_(2)O_(7) could be attributed to their different electronic and crystal *** work will provide a new perspective for the screening and design of p-block metal composite oxide photocatalysts to enhance the removal of organic pollutants in the environment.

关键词： p-block metal composite oxide Sr_(1.36)Sb_(2)O_(6) Sr_(2)Sb_(2)O_(7) photocatalytic tetracycline hydrochloride

Degradation of tetracycline hydrochloride by ultrafine TiO_(2) nanoparticles modified g-C_(3)N_(4) heterojunction photocatalyst:Influencing factors,products and mechanism insight

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第3期33卷 1337-1342页

作者： Bin Zhang Xu He Chengze Yu Guocheng Liu Dong Ma Chunyue Cui Qinghua Yan Yingjie Zhang Guangshan Zhang Jun Ma Yanjun Xin Qingdao Engineering Research Center for Rural Environment Water Resources Protection and Utilization Center for Rural AreasQingdao Agricultural UniversityQingdao 266109China State Key Laboratory of Urban Water Resource and Environment Harbin Institute of TechnologyHarbin 150090China School of Marine Science and Technology Sino-Europe Membrane Technology Research Institute Harbin Institute of TechnologyWeihai 264209China

The unique heterojunction photocatalyst of graphite carbon nitride (g-C_(3)N_(4)) modified ultrafine TiO_(2) (g-C_(3)N_(4)/TiO_(2)) was successfully fabricated by electrochemical etching and co-annealing method. However, the effects of various environmental factors on the degradation of TC by g-C_(3)N_(4)/TiO_(2) and the internal reaction mechanism are still unclear. In this study, the effects of initial pH, anions, and cations on the photocatalytic degradation of tetracycline hydrochloride (TC) by g-C_(3)N_(4)/TiO_(2) were systematically explored, and the scavenging experiment and intermediate detection were conducted to better reveal the mechanism on photocatalytic degradation of TC. The results showed that the removal efficiency of photocatalytic degradation of TC by g-C_(3)N_(4)/TiO_(2) could reach 99.04% under Xenon lamp irradiation within 120 min. The unique g-C_(3)N_(4)/TiO_(2) heterojunction photocatalyst showed excellent photocatalytic performance for the degradation of TC at pH 3~7, and possesses outstanding anti-interference ability to NO_(3)^(-), Cl^(-), Na^(+), Ca^(2+) and Mg^(2+) ions in natural waters during the photocatalytic degradation TC process. Superoxide radicals (O_(2)^(·-)) and hydroxyl radicals (^(·)OH) were proved as the main reactive species for TC degradation, and the possible mechanism of the unique photocatalytic system for g-C_(3)N_(4)/TiO_(2) was also proposed. The above results can provide a reliable basis and theoretical guidance for the design and application of visible photocatalyst with high activity to degrade the actual wastewater containing TC.

关键词： Photocatalytic TiO_(2) G-C3N4 tetracycline hydrochloride Mechanism

In-situ construction of Co(OH)_(2) nanoparticles decorated biochar for highly efficient degradation of tetracycline hydrochloride via peracetic acid activation

在线全文

学校读者我要写书评

暂无评论

中国化学快报:英文版 2023年第9期34卷 264-269页

作者： Fengbin Sun Xudong Yang Feng Shao Fan Li Zhicheng Pan Lin Qiao Ziniu Xiao Wen Liu Institute of Urban Meteorology China Meteorological AdministrationBeijing 100089China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics Institute of Atmospheric PhysicsChinese Academy of SciencesBeijing 100029China The Key Laboratory of Water and Sediment Sciences Ministry of EducationCollege of Environmental Sciences and EngineeringPeking UniversityBeijing 100871China College of Landscape Architecture Zhejiang Agriculture and Forestry UniversityHangzhou 311300China Water Safety and Water Pollution Control Engineering Technology Research Center in Sichuan Province Haitian Water GroupChengdu 610299China

Peracetic acid(CH_(3)C(O)OOH,PAA)-based heterogeneous advanced oxidation process(AOP)has attacked intensive interests due to production of various reactive ***,Co(OH)_(2)nanoparticles decorated biochar(Co(OH)_(2)/BC)was fabricated by a simple and controllable method,which was used to degrade tetracycline hydrochloride(TTCH)in water through PAA *** results indicated that 100%TTCH(C_(0)=10μmol/L)degradation efficiency was realized within 7 min at pH 7,with a high kinetic rate constant(k_(1))of 0.64 min^(-1)by the optimized Co(OH)_(2)/*** characterizations suggested that Co(OH)_(2)nanoparticle was successfully decorated on biochar,leading to more active sites and electronic structure alteration of biochar,thus greatly promoting the catalytic cleavage of PAA for radicals ***,the reactive oxygen species(ROS)quenching experiments and electron paramagnetic resonance(EPR)analysis demonstrated the key species were alkoxyl radicals(R–O^(·),mainly CH_(3)CO_(2)^(·)and CH_(3)CO_(3)^(·)),HO^(·)and^(1)O_(2)in this ***,density functional theory(DFT)calculation on Fukui index further revealed that the vulnerable sites of TTCH and three possible degradation pathways were *** study can provide a new strategy for synthesis functional materials in PAA activation AOPs for removal of antibiotics in water.

关键词： Biochar Peracetic acid(PAA) tetracycline hydrochloride Intermediates DFT calculation

Preparation of BiOCl0.9I0.1/β-Bi2O3 composite for degradation of tetracycline hydrochloride under simulated sunlight

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2020年第10期41卷 1535-1543页

作者： Xiong Ma Kaiyi Chen Bin Niu Yan Li Lei Wang Jingwei Huang Houde She Qizhao Wang School of Environmental Science and Engineering Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region of Ministry of EducationChang'an UniversityXi'an 710064ShanxiChina College of Chemistry and Chemical Engineering Northwest Normal UniversityLanzhou 730070GansuChina

A novel and effective BiOCl0.9I0.1/x%β-Bi2O3 composite catalyst was synthesized through a precipitation method. The structure, morphology, and optical properties of the samples were certified by X-ray diffraction, UV-Vis diffuse reflectance, scanning electron microscopy, and X-ray photoelectron spectroscopic characterizations. Photocatalytic experiments demonstrated that the synthesized BiOCl0.9I0.1/x%β-Bi2O3 composite catalyst exhibited excellent photocatalytic performance toward the degradation of tetracycline hydrochloride(TCH) under simulated sunlight. Furthermore, the TCH degradation rate of BiOCl0.9I0.1/15%β-Bi2O3 increased by 27.6% and 61.4% compared with those of the pure BiOCl0.9I0.1 and pure β-Bi2O3, respectively. Due to the multiple vacancies and valence states possessed by BiOCl0.9I0.1/x%β-Bi2O3, namely Bi5+, Bi(3-x)+, Bi5+–O, Bi3+–O, I- and I3-, the charge separation in photocatalysis reactions can be effectively promoted. The Mott-Schottky measurements indicate that the conduction band(CB) level of BiOCl0.9I0.1/15%β-Bi2O3 becomes more negative relative to that of BiOCl0.9I0.1, guaranteeing an advantageous effect on the redox ability of the photocatalyst. This study provides a new bright spot for the construction of high-performance photocatalysts.

关键词： BiOCl0.9I0.1/β-Bi2O3 Degradation tetracycline hydrochloride Photocatalysis Simulated sunlight

Significant role of carbonate radicals in tetracycline hydrochloride degradation based on solar light-driven TiO2-seashell composites:Removal and transformation pathways

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2020年第10期41卷 1511-1521页

作者： Jiaqi Wang Qingrong Qian Qinghua Chen Xin-Ping Liu Yongjin Luo Hun Xue Zhaohui Li College of Environmental Science and Engineering Fujian Key Laboratory of Pollution Control&Resource ReuseFujian Normal UniversityFuzhou 350007FujianChina Fuqing Branch of Fujian Normal University Fuqing 350300FujianChina State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116FujianChina

TiO2-seashell composites prepared via a sol-gel method were used to generate carbonate radicals(·CO3–) under solar light irradiation. ·CO3–, a selective radical, was employed to degrade the target tetracycline hydrochloride contaminant. A series of characterizations was carried out to study the structure and composition of the synthesized TiO2-seashell composite. This material exhibits excellent solar light-driven photochemical activity in the decomposition of tetracycline hydrochloride. The possible pathway and mechanism for the photodegradation process were proposed on the basis of high-resolution electrospray ionization time-of-flight mass spectrometry experiments. Finally, we investigated the reusability of the TiO2-seashell composite. This study is expected to provide a new facile pathway for the application of ·CO3– radicals to degrade special organic pollutants in water.

关键词： TiO2-seashell Carbonate radical Photochemistry tetracycline hydrochloride Mechanism