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tetracycline removal via adsorption and metal-free catalysis with 3D macroscopic N-doped porous carbon nanosheets:Non-radical mechanism and degradation pathway

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Journal of Environmental Sciences 2022年第1期34卷 351-366页

作者： Yaqian Shen Ke Zhu Dongdong He Jin Huang Hongmei He Lele Lei Wenjin Chen School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China

Recently,metal-based carbon materials have been verified to be an effective persulfate activator,but secondary pollution caused by metal leaching is ***,a green metalfree 3D macroscopic N-doped porous carbon nanosheets(NPCN)was synthesized *** obtained NPCN showed high adsorption capacity of tetracycline(TC)and excellent persulfate(PS)activation ability,especially when calcined at 700℃(NPCN-700).The maximum adsorption capacity of NPCN-700 was 121.51 mg/g by H-bonds ***,the adsorption process followed pseudo-second-order kinetics model and Langmuir adsorption *** large specific surface area(365.27 mg/g)and hierarchical porous structure of NPCN-700 reduced the mass transfer resistance and increased the adsorption *** 96.39%of TC was removed after adding *** effective adsorption of the catalyst greatly shortened the time for the target organic molecules to migrate to the ***,the NPCN-700 demonstrated high reusability with the TC removal rate of 80.23%after 4 *** experiment and electron paramagnetic resonance(EPR)test confirmed the non-radical mechanism dominated by ^(1)O_(2).More importantly,the C=O groups,defects and Graphitic N acted as active sites to generate ^(1)O_(2).Correspondingly,electrochemical measurement revealed the direct electron transfer pathway of TC ***,multiple degradation intermediates were recognized by the LC-MS measurement and three possible degradation pathways were ***,the prepared NPCN had excellent application prospects for removal of antibiotics due to its remarkable adsorption and catalytic degradation capabilities.

关键词： 3D macroscopic N-doped porous carbon nanosheets tetracycline Adsorption and metal-free catalysis Singlet oxygen

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tetracycline natural products:discovery,biosynthesis and engineering

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Chinese Journal of Natural Medicines 2022年第10期20卷 773-794页

作者： WANG Haiyan WANG Ljun FAN Keqiang PAN Guohui State Key Laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of SciencesBeijing 10010lChina University of Chinese Academy of Sciences Beijing 100049China

tetracycline(TC)natural products possess a variety of remarkable bioactivities and diverse *** are an important and fertile source for developing novel *** one of the most successful drug families,TC antibiotics have been in clinical use for over seven decades,and continue to make an important contribution to human health *** date,studies on TC natural products and their biosynthesis have revealed numerous novel biochemical mechanisms and regulatory elements,which facilitates the rational metabolic engineering studies for generating novel bioactive TC analogs and inspires the development of new synthetic biology *** this review,we provide a comprehensive overview on the discovery,biosynthesis,and engineering of the existing TC natural *** analyses will be of great value for the discovery,design and development of novel TC drugs in the future.

关键词： tetracycline Polyketide synthases Biosynthesis Engineering

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tetracycline selective electrode based on molecularly imprinted polymer particles

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Chinese Chemical Letters 2010年第10期21卷 1235-1238页

作者： Zhi Yong Guo Pan Pan Gai Jing Duan Hui Na Zhang Sui Wang Faculty of Materials Science and Chemical Engineering The State Key Laboratory Base of Novel Functional Materials and Preparation Science Ningbo University Ningbo 315211 China

tetracycline selective electrode using molecularly imprinted polymer particles as quasi-ionophore was constructed the first time, and its performance was carefully characterized. Due to the specific recognition of tetracycline by the particles, the selectivity coefficients for routine interferences were less than 10-4. Benefited from the absence of tetracycline in the sensitive membrane and the optimized composition of the inner filling solution, the limit of detection of the electrode was reduced to about 2.5 × 10^-8 mol/ L. It exhibited a good electrode slope 57.6 mV/decade near the theoretical Nernstian one, with a wide linear working range from 6.0 × 10^-8 to 1.0 × 10^-3 mol/L. The fabricated electrode should be used in pH 2--4, response time of which was less than 200 s when the concentration of tetracycline was higher than 1.0 × 10^-6 mol/L and no more than 30 min at the concentration of 1.0 × 10^-8 mol/L.

关键词： Ion selective electrode Molecular imprinting polymer Quasi-ionophore tetracycline

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tetracycline sensitizes TiO_(2) for visible light photocatalytic degradation via ligand-to-metal charge transfer

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Chinese Chemical Letters 2022年第12期33卷 5218-5222页

作者： Caidie Qin Juanjuan Tang Ruxia Qiao Sijie Lin College of Environmental Science and Engineering Biomedical Multidisciplinary Innovation Research InstituteShanghai East HospitalTongji UniversityShanghai 200092China Key Laboratory of Yangtze River Water Environment Shanghai Institute of Pollution Control and Ecological SecurityTongji UniversityShanghai 200092China

Treatment of antibiotics contaminated water remains a global environmental *** this study,tetracycline(TC)was found to effectively sensitize pure TiO_(2) for visible light photocatalytic degradation via a ligand-to-metal charge transfer *** sensitization was attributed to the formation of TC-TiO_(2) complex and the overlap of the molecular orbitals of TC and the conduction band of TiO_(2).The intermediate degradation products of TC,however,did not sensitize TiO_(2),which was the reason for the low mineralization ***,our results showed that the intermediate degradation products of TC had significantly reduced bactericidal effects and less induction of antibiotic-resistance genes(ARGs).This study showcases an effective treatment of antibiotics-containing wastewater using the most common photocatalyst TiO_(2) with reduced risk in the spread of ARGs.

关键词： Ligand-to-metal charge transfer sensitization tetracycline TiO_(2) Photocatalytic degradation Antibiotic resistance gene

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Synthesis of porous carbon nanomaterials and their application in tetracycline removal from aqueous solutions

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Chinese Journal of Chemical Engineering 2023年第7期59卷 200-209页

作者： Sufei Wang Mengjie Hao Danyang Xiao Tianmiao Zhang Hua Li Zhongshan Chen College of Life and Environmental Sciences Minzu University of ChinaBeijing 100081China College of Environmental Science and Technology North China Electric Power UniversityBeijing 102206China

The low-cost and efficient elimination of tetracycline from wastewater and to decrease the concentration in soils,sediments,rivers,underground water,or lakes are crucial to human ***,threedimensional porous carbon nanomaterials were synthesized using glucose and NH_(4)Cl by sugarblowing process at 900℃ and then oxidized under air atmosphere for surface functional group *** prepared 3D porous carbon nanomaterials were applied for the removal of tetracycline from aqueous *** sorption isotherms were well simulated by the Langmuir model,with the calculated sorption capacity of 2378 mg·g^(-1) for C-450 at pH=6.5,which was the highest value of today's reported *** porous carbon nanomaterials showed high stability at acidic conditions and selectivity in high salt *** good recycle ability and high removal efficiency of tetracycline from natural groundwater indicated the potential application of the porous carbon nanomaterials in natural environmental antibiotic pollution *** outstanding sorption properties were attributed to the structures,surface areas and functional groups,strong interactions such as H-bonding,π-π interaction,electrostatic attraction,*** paper highlighted the synthesis of porous carbon nanomaterials with high specific surfaces,high sorption capacities,stability,and reusability in organic chemicals'pollution treatment.

关键词： Porous carbon nanomaterials tetracycline Sorption Pollution management

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Enhanced fluorescence sensing of tetracycline with Ti_(2)C quantum dots

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Nano Research 2024年第4期17卷 3180-3188页

作者： Dejia Hu ShangZuo Jiang Tianhao Xia Danyang Xiao Yan Li Yanbing Hou Jin Zhong Zhang Ying-Chih Pu School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Key Lab Luminescence&Optical Information Ministry EducationBeijing JiaoTong UniversityBeijing 100044China Department of Chemistry and Biochemistry University of CaliforniaSanta CruzCalifornia 95064USA Department of Materials Science "National University of Tainan"Tainan 700301TaiwanChina

Ti_(2)C quantum dots(QDs)with rich surface functional groups have been synthesized using a hydrothermal method,and used to detect tetracycline(Tc)based on enhanced *** interaction between the surface functional groups of Ti_(2)C QDs and Tc enhanced the fluorescence of Tc at 514 nm,which is used to detect Tc quickly and *** optimal conditions,the fluorescence intensity was linear to the concentration of Tc in the range of 50.0–30.0μM,with a detection limit of 21.6 ***,the Tc-Ti_(2)C QDs detection system was evaluated for detection of Tc in milk and artificial *** study demonstrates a new and simple strategy for Tc detection,which is important for food safety and human health.

关键词： Ti_(2)C MXene quantum dots tetracycline fluorescence enhancement detection

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Degradation of tetracycline in water by gas-liquid plasma in conjunction with rGO-TiO_(2) nanocomposite

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Plasma Science and Technology 2021年第11期23卷 110-120页

作者： Xinghao LIU Cheng CHENG Zimu XU Shuheng HU Jie SHEN Yan LAN Paul K CHU Institute of Plasma Physics Chinese Academy of SciencesHefei 230031People's Republic of China College of Chemistry and Chemical Engineering Central South UniversityChangsha 410083People's Republic of China School of Resources&Environmental Engineering Hefei University of TechnologyHefei 230009People's Republic of China Department of Physics and Department of Materials Science and Engineering City University of Hong KongTat Chee AvenueKowloonHong KongPeople's Republic of China

tetracycline(TC)is an antibiotic mainly used in livestock production and respiratory *** methods are not effective in removing TC from *** this study,TC was degraded by gas–liquid plasma in the presence of rGO-TiO_(2)in *** rGO-TiO_(2)was prepared by modified hummers and hydrothermal *** electrical and optical properties of the gas–liquid discharge plasma were studied and the produced long-lived reactive species were analyzed by *** degradation efficiency of TC was improved by 41.4%after plasma treatment for 12 min in presence of 30 mg l-1 r GO-TiO_(2)compared to that with plasma *** degradation efficiency increased with increasing discharge power,but as the initial concentration was increased from 20 to 80 mg l-1,the degradation efficiency of TC *** initial p H had no significant effect on the degradation of *** intermediate products were determined by UV–vis spectrophotometry and ESI(+)–MS,and the degradation mechanism was *** reactive species,including O_(3),·OH,and H_(2)O_(2),etc.,produced in the plasma/catalyst system attracted electron-rich functional groups(amino group,aromatic ring,and double bond).Therefore,the gas–liquid plasma/catalyst system could be an effective and promising method for pharmaceutical wastewater treatment in future.

关键词： gas-liquid plasma rGO-TiO_(2) tetracycline degradation mechanism

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In situ formation of bimetallic FeNi nanoparticles on sand through green technology:Application for tetracycline removal

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Frontiers of Environmental Science & Engineering 2020年第1期14卷 185-197页

作者： Ravikumar KVG Debayan Ghosh M rudula Pulimi Chandrasekaran Natarajan Amitava Mukherjee Centre for Nanobiotechnology VITVelloreTamil NaduIndia

In this study,FeNi nanoparticles were green synthesized using Punica granatum(pomegranate)peel extract,and these nanoparticles were also formed in situ over quartz sand(GS-FeNi)for removal of tetracycline(TC).Under the optimized operating conditions,(GS-FeNi concentration:1.5%w/v;concentration of TC:20 mg/L;interaction period:180 min),99±0.2%TC removal was achieved in the batch reactor The removaT capacity was 181±1 mg/g.A detailed characterization of the sorbent and the solution before and after the interaction revealed that the removal mechanism(s)involved both the sorption and degradation of *** reusability of reactant was assessed for four cycles of operation,and 77±4%of TC removal was obtained in the *** judge the environmental sustainability of the process,residual toxicity assay of the interacted TC solution was performed with indicator bacteria(Bacillus and Pseudomonas)and algae(Chlorella sp.),which confirmed a substantial decrease in the *** continuous column studies were undertaken in the packed bed reactors using *** the optimized conditions,quite high removal efficiency(978±5 mg/g)was obtained in the *** application of GS-FeNi for antibiotic removal was further evaluated in lake water,tap water,and ground water spiked with TC,and the removal capacity achieved was found to be 781±5,712±5,and 687±3 mg/g,*** work can pave the way for treatment of antibiotics and other pollutants in the reactors using novel green composites prepared from fruit wastes.

关键词： GS-FeNi nanoparticles tetracycline removal Re-usability Residual toxicity Column studies

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MOF-derived La/ZnO–TiO2 composite with enhanced photocatalytic ability for degradation of tetracycline

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Progress in Natural Science:Materials International 2023年第4期33卷 544-550页

作者： Lin Zhang Jun Chen Lai-Bo Song Jun-Jie Pan Qing Luo School of Physical and Healthy Education Jiangxi Science and Technology Normal University School of Chemistry and Environmental Engineering Wuhan Institute of Technology Britton Chance Center for Biomedical Photonics at Wuhan National Laboratory for Optoelectronics-Hubei Bioinformatics&Molecular Imaging Key Laboratory Department of Biomedical Engineering College of Life Science and Technology Huazhong University of Science and Technology Chemical Biology Center Lishui Institute of Agriculture and Forestry Sciences College of Materials Xiamen University

Developing effective and stable photocatalysts for organic pollutants degradation are still a big challenge in practical water treatment now. In this work, La doped ZnO–TiO2composite（La/ZnO–TiO2） were successfully fabricated by using PVP modified ZIF-8/TiO2as template via the absorption and pyrolysis routes. All as-fabricated materials were analyzed by XRD, SEM, TEM, BET, XPS, UV–vis absorption spectra and ESR spectra. PVP modified ZIF-8/TiO2was fully transferred into ZnO–TiO2after being pyrolyzed at high temperature under air *** doping of La can make ZnO–TiO2exhibiting red-shifted, which is attributed to the capture of photo-generated electrons by La, leading to the effective separation between photo-generated electrons and holes. Furthermore,the photocatalytic performance of all as-fabricated materials were explored by degradation of tetracycline（TC）solution under UV light irradiation. La/ZnO–TiO2exhibits excellent stability. And the photocatalytic degradation rate of La/ZnO–TiO2is 99.2%, which is even higher than ZnO（87.4%）, ZnO–TiO2（87.4%）, P25（TiO2）(92.7%).More than that, the effect of catalyst's dose, effect of TC concentration and effect of pH for TC degradation have been well explored. The excellent photocatalytic performance of La/ZnO–TiO2makes it possible to be applied for degradation of organic pollutants in practice.

关键词： La/ZnO–TiO2 Red-shifted Effective separation Photocatalytic performance tetracycline

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Immobilization of NZVI in polydopamine surface-modified biochar for adsorption and degradation of tetracycline in aqueous solution

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Frontiers of Environmental Science & Engineering 2018年第4期12卷 87-97页

作者： XiangyuWang Weitao Lian Xin Sun Jun Ma Ping Ning Faculty of Environmental Science and Engineering Kunming University of Science and Technology Kunming 650500 China School of Municipal and Environmental Engineering State Key Laboratory of Urban Water Resources and Environment Harbin Institute of Technology Harbin 150090 China＊

Polydopamine/NZVl@biochar composite （PDA/NZVI@BC） with high removal efficiency of tetracycline （TC） in aqueous solutions was successfully synthesized, The resultant composite demonstrated high reactivity, excellent stability and reusability over the reaction course. Such excellent performance can be attributed to the presence of the huge surface area on biochar （BC）, which could enhance NZVI dispersion and prolong its longevity. The carbonyl group contained on the surface of bioehar could combine with the amino group on polydopamine（PDA）. The hydroxyl groups in PDA is able to enhance the dispersion and loading of NZVI on BC. Being modified by PDA, the hydrophilicity of biochar was improved. Among BC, pristine NZVI and PDA/NZVI（L-BC, PDA/ NZVI（a-,BC exhibited the highest activity for removal of TC. Compared with NZVI, the removal efficiency of TC could be increased by 55.9c- by using PDA/NZVI@BC under the same conditions. The optimal modification time of PDA was 813, and the ratio of NZVI to BC was 1：2. In addition, the possible degradation mechanism of TC was proposed, which was based on the analysis of degraded praducts by LC-MS. Difli,-rent importanl /actors impacling on TC removal （including mass ratio of NZVI to BC/PDA, initial concentration, pH value and the initial temperature of the solution） were investigated as well. Overall, this study provides a promising alternative material and environmental pollution management option for antibiotic wastewater treatment.

关键词： Biochar Polydopamine NZVI Modification tetracycline

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