JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Chi Fei,Zaocheng Dong,Houqi Zhou,Ting Xu,Keying Tang,Yilong Fan,Chunyu Chen,Dianchun Ju,Zuoqiao Zhu,Han Ma,Rui Mao
A “waste-to-waste” strategy was adopted by pyrolyzing waste sugarcane bagasse to synthesize biomass-derived carbon (AC) and utilizing diatomite (DTE) as a substrate to construct a high-performance three-dimensional carbon–silica-based bismuth oxychloride (AC-DTE@BiOCl) photocatalyst. The three-dimensional structure effectively prevents the agglomeration of BiOCl while providing additional active sites. Experimental results demonstrate that AC-DTE@BiOCl efficiently degrades 96.2 % of tetracycline hydrochloride (TCH) within 90 min, exhibiting excellent photocatalytic performance. Infrared spectroscopy analysis reveals that the symmetric stretching vibration peak of Si-O (804 cm −1 ) weakens and slightly broadens, while no characteristic peaks of TCH are detected, indicating its complete degradation. Density functional theory (DFT) calculations indicate that the carbonyl site in the TCH molecule exhibits the highest negative electrostatic potential, and O2, O4, O7, N1, O6, and O3 atoms are identified as the primary active sites for radical attack. Furthermore, the photocatalytic degradation of TCH mainly proceeds through hydroxylation, deamination, and ring-opening pathways. These findings provide valuable insights into the rational design and development of high-efficiency and stable photocatalytic materials for environmental remediation applications.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
Materials Today Communications
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2024
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IF 3.7
Wenbin Li,Zhijian Zhou,Zhili Chen,Li Chen,Jin Tang,Lizhao Zhang
In this study, a new adsorbent denoted as nAg/nZVI/AC was developed using activated carbon (AC) loaded with nanosized zero-valent iron (nZVI) and nanosilver (nAg). Then, the adsorption and degradation of tetracycline hydrochloride (TCH) in aqueous solutions using nAg/nZVI/AC was examined. At pH 3.8, the adsorbed amount of TCH on nAg/nZVI/AC was 191.18 mg/g, which is 78.95 mg/g higher than that adsorbed on the pristine AC support. The adsorption process could be explained adequately using the Freundlich (R 2 = 0.9641) and pseudo-second-order kinetic models (R 2 = 0.9967). Thermodynamic analyses revealed that TCH removal is a spontaneous chemisorption-dominated process. Free-radical-quenching experiments and electron paramagnetic resonance spectroscopic studies revealed that hydroxyl (·OH) and superoxide (·O 2 − ) radicals are the main species involved in the degradation of TCH. Finally, the intermediates generated during the degradation were examined using liquid chromatography-mass spectrometry, and possible deterioration pathways are proposed.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
RESEARCH ON CHEMICAL INTERMEDIATES
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2017
·Vol. 44
·期 1
·1-11
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IF 1.369
Yan Xuefeng,Gan Kaifeng,Tian Baozhu,Zhang Jinlong,Wang Lingzhi,Lu Deli
A yolk–shell-structured sphere composed of a superparamagnetic Fe 3 O 4 core and a carbon shell (Fe 3 O 4 @HCS) was etched from Fe 3 O 4 @SiO 2 @carbon by NaOH, which was synthesized through the layer-by-layer coating of Fe 3 O 4 . This yolk–shell composite has a shell thickness of ca. 27 nm and a high specific surface area of 213.2 m 2 g −1 . Its performance for the magnetic removal of tetracycline hydrochloride from water was systematically examined. A high equilibrium adsorption capacity of ca. 49.0 mg g −1 was determined. Moreover, the adsorbent can be regenerated within 10 min through a photo-Fenton reaction. A stable adsorption capacity of 44.3 mg g −1 with a fluctuation <10% is preserved after 5 consecutive adsorption–degradation cycles, demonstrating its promising application potential in the decontamination of sewage water polluted by antibiotics.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
International Journal of Environmental Research and Public Health
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2022
·Vol. 19
·期 18
·11447
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IF 4.614
Hong Xiao,Yingjun Wang,Hong Peng,Ying Zhu,Dexin Fang,Ganxue Wu,Li Li,Zhenxing Zeng
The transformation of organic pollutants by stabilized nano-FeS in oxic conditions is far less understood than in anoxic states. Herein, carboxymethyl cellulose-stabilized FeS (CMC-FeS) nanofluids are prepared at a CMC-to-FeS mass ratio of 1/2 and their performance of tetracycline hydrochloride (TC) degradation under oxic conditions was investigated. Here, we showed that TC could be efficiently removed by oxygenation of CMC-FeS nanofluids at neutral initial pH. We found that CMC-FeS dosages as low as 15 mg/L can achieve the TC removal efficiency as high as 99.1% at an initial TC concentration of 50 mg/L. Oxidative degradation plays a predominated role in TC removal (accounting for 58.0%), adsorption has the second importance (accounting for 37.0%), and reduction has minor impact (accounting for 4.1%) toward TC removal. Electron spin resonance assays, fluorescent detection using coumarin as a probe, and radical scavenging experiments confirm that hydroxy radicals (•OH), both in free and surface-bound forms, contribute to oxidation of TC. Humic acids brought detrimental effects on TC removal and therefore should be biologically degraded in advance. This work offers a facile and cost-effective solution to decontaminate TC in natural and engineered water bodies.Keywords:tetracycline hydrochloride;CMC-FeS nanofluid;oxygenation;hydroxy radicals
研究领域:
环境科学
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污染治理
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DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
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2019
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IF 5.256
Yuan Yan,Jia Hui Liu,Rong Sheng Li,Yuan Fang Li,Cheng Zhi Huang,Shu Jun Zhen
The traditional synthesis methods of carbon dots (CDs) have some disadvantages of complicated operation and a large amount of energy consumption. To address these limitations, we synthesized yellow-green luminescent CDs at room temperature according to the principle of amine-aldehyde condensation in this work. This reaction is simple, economical, energy saving and is extremely consistent with the concept of green synthesis and sustainable development . In addition, studies have found that tetracycline hydrochloride (TC) can quench the fluorescence of the as-prepared CDs through Inner filter effect (IFE). The changes of the fluorescence intensity also have a good linear relationship with the concentration of TC in the range of 10.0–400.0 μM, and the detection limit is 6.0 μM. This method has been successfully used to determine the tetracycline content of tetracycline tablets. Finally, the interaction mechanism between TC and CDs was analyzed and discussed.
研究领域:
分析化学
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环境科学
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材料科学
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DOI
高影响因子
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Linye Zhang,Jun Xiao,Huixian Che,Deyuan Xiong,Yanling Zhou,Baiying Li,Yi Liu,Guangtao Wei
In this work, with sugarcane bagasse (SB) and red mud (RM) as raw materials, magnetic nitrogen (N)-doped biochar (MNSB) was synthesized by a facile one-pot pyrolysis method and then applied as an efficient adsorbent to remove tetracycline hydrochloride (TC-HCl) from wastewater. The results of SEM, EDS, VSM , BET, FT-IR, and XPS demonstrated that the synthesized MNSB adsorbent had a large specific surface area, excellent superparamagnetic properties, and rich mesopore pore structures . The batch adsorption experiments revealed that the TC-HCl could be removed 96.3% with the optimal adsorption conditions: MNSB dosage of 0.25 g/L, initial pH of 6.58, TC-HCl initial concentration of 20 mg/L, and adsorption temperature of 30 °C. The analysis of adsorption kinetics and isotherms showed that the adsorption process was mainly controlled by chemisorption , and the theoretical maximum adsorption capacity of TC-HCl on MNSB was 143.9 mg/g. Mechanistic analysis revealed that the excellent adsorption process of MNSB for TC-HCl was mainly contributed by pore filling, π–π interaction, hydrogen bonding , and electrostatic attraction. The recycling and settlement experiments demonstrated that MNSB had good stability and settleability. This study successfully opened new prospects that utilizing RM and SB to prepare a low-cost adsorbent to remove TC-HCl from water.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Water Process Engineering
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2024
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IF 6.3
Bo Xian,Wei Tang,Dongfang Xiang,Chenyang Rao,Xiaying Liu,Fang Fang,Fuhao Chu,Tao Fang
In this study, Microcystis aeruginosa was effectively transformed into high-surface-area biochar using four different organic potassium salts as activators, achieving a maximum specific surface area of 2933 m 2 ·g −1 . The resulting biochar exhibited an outstanding adsorption capacity for tetracycline hydrochloride, reaching up to 969.9 mg·g −1 . Our findings reveal that a higher potassium content in the precursor correlates with an increased surface area of the biochar, while lower self‑carbonization temperatures or higher melting points of the organic potassium salts promote a greater proportion of mesopores. Hydrogen bonding was identified as the primary adsorption mechanism, with density functional theory providing further insights into its significant role. This research presents a controllable, efficient, and environmentally friendly strategy for biochar activation and offers a predictive framework for optimizing biochar properties through organic potassium salt modification, laying a solid theoretical foundation for the design of advanced adsorbents with enhanced performance.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Water Process Engineering
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2024
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IF 6.3
Zhineng Dai,Wenqi Zhang,Jiazhong Li,Yicheng Wu,Haiyan Fu
The prediction of Tetracycline hydrochloride (TCH) degradation using artificial intelligence (AI) has garnered increasing interest due to its potential to significantly reduce experimental costs. Despite this interest, the methods and techniques in this area remain underdeveloped and require further research. As AI technology advances, an expanding array of techniques becomes available for application in degradation prediction. In this study, polyaniline (PANI) was selected as a three-dimensional particle electrode for the degradation of TCH. We utilized five input variables: initial concentration, voltage, electrolyte concentration, particle concentration, and time, with the absorbance after degradation serving as the output. By integrating extreme gradient boosting (XGB) and a multilayer perceptron (MLP), we successfully developed the XGB_MLP model. This model achieved a predictive accuracy (R 2 ) of 98.52 % and a root mean square error (RMSE) of 0.052. Furthermore, a degradation rate of 83.48 % was observed for 10 ppm of TCH after 120 min. The findings of this study underscore the capability of the XGB_MLP model to accurately predict the degradation rate of TCH through electrochemical degradation.
研究领域:
环境科学
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人工智能
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化学工程
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产品关联
DOI
高影响因子
LANGMUIR
·
2025
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IF 3.9
Xiao-Yu Ye,Yu-Ling Qi,Ying Cheng,Qiang Wang,Guo-Zhi Han
Morphology regulation and element doping are effective means to improving the photocatalytic performance of graphite-phase carbon nitride (g-C3N4). In this article, using melamine and zinc chloride as raw materials, a novel kind of Zn/Cl-doped hollow microtubular g-C3N4 (Zn-HT-CN) by a hydrothermal method was developed. The structure and morphology of Zn-HT-CN and reference samples were characterized by X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), etc. The doping of Zn/Cl narrowed the bandgap width of the hollow microtubular g-C3N4, as well as the inhibiting recombination of photogenerated electron and holes. Compared with the pure g-C3N4 microtube, Zn-HT-CN showed excellent catalytic performance for the photodegradation of tetracycline hydrochloride (TCH) under irradiation of visible light. The photodegradation rate of TCH reached 94.41% in 40 min, which was about two times as high as that catalyzed by the pure g-C3N4 microtube. Moreover, it was also superior to the g-C3N4 microtube doped with other typical metal elements. In addition, Zn-HT-CN showed good tolerance to environmental pH, and the catalytic efficiency of the material remained at 78.78% after five cycles.
研究领域:
材料科学
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环境科学
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化学
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产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2019
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IF 2.781
Dongya Li,Yang Xiao,Mengjie Pu,Jie Zan,Shiyu Zuo,Haiming Xu,Dongsheng Xia
The application of sodium percarbonate (SPC) catalyzed by metal-free protonated g-C 3 N 4 under visible light (vis) irradiation was investigated for the first time to stimulate the degradation of methylene blue (MB) and tetracycline hydrochloride (TCH). The catalyst was obtained by using thermal induction polymerization and chemical exfoliation method. The structure and properties of as-synthesized samples were characterized. Moreover, the effects of various factors such as the initial solution pH on MB degradation were also evaluated. Results obtained in the test actively demonstrated that effective degradation of MB was achieved in the protonated g-C 3 N 4 /SPC/Vis system. This system has a wide range of pH application, and the catalyst presents excellent stability. Holes, superoxide anion radical (•O 2 − ) and hydroxyl radical (•OH) were confirmed as the predominant species responsible for MB degradation. The reaction mechanism for MB degradation in the protonated g-C 3 N 4 /SPC/Vis system was proposed according to the characterization of the samples, the free radical quenching tests, and electron paramagnetic resonance (EPR) spectrum analysis.
研究领域:
环境科学
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催化化学
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产品关联
DOI
高影响因子
Nanoscale Research Letters
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2018
·Vol. 13
·期 1
·1-12
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IF 3.125
Wang Qi,Ma Chunlei,Tang Jianke,Zhang Cuihong,Ma Lihua
Taking advantages of reticular proteins and reductive groups on the surface, eggshell membrane (ESM) was selected to synthesize MnO 2 nanoparticles from potassium permanganate through a super simple way in which ESM acted as both template and reductant. This process avoided harsh reaction conditions or complicated aftertreatments and thus owned the merits of green synthesis, handy operation, low cost, and easy purification. The ESM-templated MnO 2 nanoparticles (MnO 2 NPs/ESM) were characterized, and the content of nanomaterials on the template was tested. MnO 2 NPs/ESM showed a good capacity for decontamination of tetracycline hydrochloride (TCH). The macroscopical materials can be separated easily by taking the membrane out to stop the degradation instead of centrifugation or filtration. It was studied that 72.27% of TCH (50 mg/L) was decontaminated in 20 min by 0.1920 g/L MnO 2 nanoparticles, and removal efficiency could reach 83.10% after 60 min under buffered condition. The kinetics was studied with or without buffer, and it was concluded that the degradation process followed a pseudo-second-order model. The facile synthesis of materials and effective degradation would facilitate the nano-MnO 2 -based decontamination applications.
研究领域:
材料科学
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环境科学
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生物学
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产品关联
DOI
PubMed
高影响因子
Frontiers in Chemistry
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2020
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IF 3.693
Zhang Siyang,Khan Iltaf,Qin Xiaohong,Qi Kezhen,Liu Ying,Bai Shuchong
In this work, the highly efficient and low-cost Ag-AgBr/AlOOH plasmonic photocatalyst is successfully prepared via a simple and mild wet-chemical process and used for degrading high concentration methylene blue (MB) and tetracycline hydrochloride (TCH). The optimized 6-Ag-AgBr/AlOOH sample showed a 79% decomposition of TCH in 2 h, which is almost two times higher than that of bare AgBr (37%). For degrading MB, the photocatalytic activity of 6-Ag-AgBr/AlOOH (decomposing 84% in 2 h) showed a large enhancement as compared to bare AgBr (only 57%). The TEM, HRTEM, XRD, DRS, and XPS characterization results confirm that Ag-AgBr is a composite catalyst formed by loading Ag nanoparticles onto AgBr surfaces and then loaded on to AlOOH. The possible mechanism proposed is that •O2- and •OH radicals produced under sun light are the main active species for degrading MB and TCH. It is hoped that this work will open a new gateway to the synthesis of highly efficient and low-cost Ag-AgBr/AlOOH plasmonic photocatalysts for degrading organic pollutants.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
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