MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2019
·
IF 2.722
Jianxin Liu,Fangxia Xie,Rui Li,Tan Li,Zehui Jia,Yunfang Wang,Yawen Wang,Xiaochao Zhang,Caimei Fan
A novel TiO 2-x /Ag 3 PO 4 composite photocatalyst with controllable oxygen vacancies (V o ·) amount was designedly prepared to avoid the photocorrosion and promote reduction capacity of Ag 3 PO 4 photocatalyst. The V o · on TiO 2-x work as molecular oxygen activation center trapping electron and O 2 to form ·O 2 - , and then avoided the electrons combine with h + and/or Ag + . Compared with Ag 3 PO 4 , TiO 2-x , and TiO 2 /Ag 3 PO 4 , TiO 2-x /Ag 3 PO 4 showed obviously efficient visible light and natural indoor weak light photocatalytic activity and stability for the photodegradation of Bisphenol A (BPA). The photoelectric conversion spectra, Ag 3d XPS narrow scan spectra, ESR DMPO-·O 2 - species spectra revealed that the TiO 2-x /Ag 3 PO 4 had a higher photocurrent density, lower photocorrosion and more generation of superoxide radical than those of Ag 3 PO 4 . Interestingly, compare with single h + degradation pathway over Ag 3 PO 4 , the h + and ·O 2 - synergistic degradation pathway over TiO 2-x /Ag 3 PO 4 is more beneficial to the BPA degradation. This work highlights the relations between the photocatalyst structure, active species and pollutant degradation pathway.
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 ELECTROANALYTICAL CHEMISTRY
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2022
·
IF 4.598
Yaxin Zhang,Zhuang Chen,Yimei Zhang,Wenwen Gu,Wendy Huang,Jiangshan Xi,Ting Cao,Yingjie Yu,Mingwang Yang,Luoyilang Ke
In this system, a highly-exposed TiO 2 photoanode was prepared as an effectively photoelectrocatalyst peroxymonosulfate (PMS) activator. Especially, we realize the highly-exposed TiO 2 grown on negatively charged MXene nanosheet which could provide dual active sites for stimulating PMS. The catalysts were characterized by XRD, XPS, SEM, UV–vis, Raman, TEM, and BET. The specific surface area for highly-exposed TiO 2 (S-400) is 10 times than Bulk catalyst (B-400), which is displayed in the BET result. The experimental results show that high exposure catalyst has excellent photoelectric activation performance. The degradation efficiency of the PEC + PMS system was 2.94 times higher than the EC + PMS and 2.76 times higher than the PC + PMS process. Compare with free PMS (1.36˚A), PMS adsorbed at the photoanode interface has a high bond angle (2.85˚A) easily to decompose into strong oxidizing SO 4 − . The electrochemical characterization results demonstrated that the highly-exposed TiO 2 had a higher separation rate of photogenerated carriers. From quenching experiments, the holes (h + ) contributed 80 % to BPA degradation in PEC + PMS system, the contribution order of other active radicals was O 2 − >SO 4 − > OH. It will help improving the control of the optimal free radical ratio. The probable mechanism and pathway of BPA degradation were suggested e − reacts with PMS and other substances to generate radicals. The research offers a new strategy for the effective activation about PMS to oxidation of the refractory organics. Besides, the results provide useful theoretical guidance for the development of new high-activity materials.
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
CHEMICAL ENGINEERING JOURNAL
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2021
·
IF 13.273
Zhiqun Xie,Zhiping Lyu,Jinnan Wang,Aimin Li,Philippe François-Xavier Corvini
Ultrafine-Mn 2 O 3 @N-doped porous carbon hybrids [Mn 2 O 3 @NC] derived from Mn-MOFs was constructed with 1 O 2 and O 2 −• as main Reactive oxygen species (ROS). Cation-π bonds and N-Mn complexation induced the formation of electron-rich Mn centre which provided electron for peroxymonosulfate activation to produce radicals, accompanying with generation of 1 O 2 via chain reaction. Notably, the porous structure of N-doped carbon shell could not only facilitate free radical recombination for generation of 1 O 2 but also provide adsorption sites for organics. On the other hand, as electron-poor centre, N-doped carbon shell could improve the electrons transfer from organic intermediate radicals to electron-rich Mn centre via π -π reaction, C-O-Mn and C-N-Mn bonds, which promote the redox of Mn to avoid peroxymonosulfate invalid decomposition. Being attributed to synergistic effects of dual-reaction centres and strong oxidation ability of 1 O 2 , Mn 2 O 3 @NC achieved high mineralization of BPA at low-dose peroxymonosulfate (0.033 g/L).
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
CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Zhongyi Fang,Jie Zhao,Yuan Li,Yu Wang,Tian Qiu,Yanlin Wu,Wenbo Dong,Gilles Mailhot
Fenton-like system had long been modified to promote its adaptability and efficiency by adding extra components like metal chelators or reducers. Nonetheless, chelator such as ethylene diamine tetraacetic acid (EDTA) was harmful in high dosage. While strong reducers could efficiently promote the generation speed of hydroxyl radicals (HO ), they could also get oxidized easily during storage time, for which further application was costly. In this study, (+)-catechin (CAT), an environmental- friendly component, was proved to be an efficient promoter of Fenton-like system on Bisphenol A (BPA) degradation. The modified system achieved 92% of BPA removal in one hour. The mechanism was studied, and the reaction procedure between CAT and Fe(III) together with the degradation pathways of CAT were identified. Fe(III) got chelated first by CAT and quickly reduced to Fe(II) via a single inner-compound electron transfer. The intermediates of CAT could further reduce one and a half more potion of Fe(III) on average. Consequently, massive amount of Fe(II) turned Fenton-like procedure to Fenton reaction and thus promoted the generation of HO . The main radicals contributed on BPA degradation was HO . BPA could be efficiently degraded at pH 6.5 or acidic pH range, but the degradation was completely inhibited with the pH higher than 8.0. The optimal mole ratio between Fe(III) and CAT was 6:1 and the degradation pathway of BPA was deduced.
研究领域:
环境化学
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水处理
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污染物降解
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绿色化学
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DOI
高影响因子
Desalination and Water Treatment
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2016
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IF 1.272
Yanli Mao,Haiyan Kang,Yifei Guo,Songtao Chen,Zengxin Wang
Using bisphenol A (BPA) as the template and the modified kaolinite as solid-support substrates, a novel surface molecularly imprinted polymer (S-MIPs) was prepared by combining self-assembly molecular imprinting technology and sacrificial support process. The resulting composites were characterized by transmission electron microscopy, thermogravimetric analysis, and nitrogen adsorption–desorption. The results of batch adsorption experiments suggested that pH 6.0 in testing solution was the optimal adsorption condition. The kinetic properties of S-MIPs were well described by the pseudo-second-order equation, which indicated that chemical process could be the rate-limiting step in the adsorption process for BPA. Equilibrium data were described by the Langmuir and Freundlich isotherm models. Results suggested that Langmuir isotherm model was fitted to the experimental data significantly better than the other models. Selectivity experiments showed the high affinity of target BPA over competitive compounds than those of non-imprinted polymers. Moreover, the reuse of S-MIPs was affirmed in five sequential cycles of adsorption/desorption, without significant loss in adsorption capacity.
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 THE ELECTROCHEMICAL SOCIETY
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2018
·Vol. 165
·期 14
·H962
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IF 3.662
Yuanzhen Zhou,Chentao Hao,Yuan Dang,Shuangli Chen
Rare earth Ce-doped ZnO nanorods were successfully synthesized via the hydrothermal method. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) results indicated that Ce ions were successfully doped into ZnO lattice and resulted in smaller nanorods and larger crystallite size, which was advantageous for the improvement of electrocatalytic performance. A highly sensitive and selective sensor for the determination of bisphenol A (BPA) has been strategically designed based on the Ce-doped ZnO nanorods. Furthermore, the electrochemical performances of the Ce-doped ZnO modified CPE (Ce-doped ZnO/CPE) are studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV) and the electrochemical responses are significantly improved. The oxidation peak currents of BPA are in good linear relationship to its concentrations in the ranges of 0.5∼3.2 μM and 3.2∼62.0 μM and the detection limit for BPA is 0.018 μM, indicating that the modified electrode has good electrocatalytic effect for BPA. Therefore, this novelly proposed sensor might have great potential value in the determination of the environmental hormone pollutants and could be extended to biomedical field, chemical engineering and food industry in the near future.
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
WATER SCIENCE AND TECHNOLOGY
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2020
·Vol. 81
·期 11
·2337-2350
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IF 1.638
Wang Jianyu,Cheng Guang,Lu Jian,Chen Huafeng,Zhou Yanbo
In this study, 4,4′-(hexafluoroisopropene) diphthalic acid (PDA)-CD polymers containing β -cyclodextrin (CD) were synthesized for the adsorption of endocrine disrupting chemicals (EDCs) and dyes. It features great adsorption of bisphenol A (BPA), methylene blue (MB) and neutral red (NR). The maximum adsorption capacities of MB, NR and BPA can reach 113.06, 106.8 and 51.74 mg/g, respectively. The tandem adsorption results revealed that adsorptions of dyes and BPA onto PDA-CD polymer were two independent processes: non-polar BPA entrapment by cyclodextrin cavities while dyes were captured by the carboxyl groups and π - π stacking interactions. The adsorption processes performed well in a wide range of pH (4.0–10.0) and were not affected by fulvic acid (FA) and inorganic ions.
研究领域:
环境化学
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材料科学
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污染控制
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吸附技术
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环境功能材料
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DOI
高影响因子
Journal of Environmental Sciences
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2026
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IF 6.3
Lihui Zhao,Can Jin,He Liu,Zhaozhe Yang,Yupeng Liu
Bisphenol A (BPA), a widespread endocrine-disrupting compound, necessitates efficient activation of peroxymonosulfate (PMS) for its degradation. Conventional carbon-based catalysts frequently exhibit limited efficiency, poor stability, and potential environmental risks. Bamboo-derived porous carbon material (BCM) and bamboo-derived porous carbon material loaded with Fe (BCM-Fe) serve as effective catalysts for activating PMS to degrade BPA. The BCM/PMS system achieved a BPA removal efficiency of 94.44 % within 150 minutes, while the BCM-Fe/PMS system attained 97.8 %. Quenching experiments and electron paramagnetic resonance (EPR) analysis identified non-radical singlet oxygen (¹O₂) as the dominant reactive species. Density functional theory (DFT) calculations demonstrated that atomically dispersed Fe species on BCM-Fe significantly enhanced PMS adsorption energy and activation kinetics compared to BCM. Both catalysts exhibited excellent reusability, confirming their potential as practical and sustainable catalysts. This study provides fundamental insights for designing efficient, environmentally benign carbon-based catalysts for advanced oxidation processes.
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高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Zitong Yang,Jingyu Deng,Yili Zhang,Wenkai Qi,Yali Li,Yuxia Zhang
TT-COF/RGO three-dimensional porous structure improves electronic conductivity and stability. • Electrochemical signals are amplified through the electrodeposition of silver nanoparticles. • MIPs achieve highly selective and specific capture of BPA. • A linear range of 0.25–500 nM and a detection limit 0.09 nM. Herein, we developed an electrochemical sensor based on molecularly imprinted polymers (MIPs) for the sensitive detection of bisphenol A (BPA) in food samples. The sensing platform was constructed based on ternary AgNPs/TT-COF/RGO hybrid architecture. Subsequently, a molecularly imprinted polymer (MIP) film was electrodeposited onto the modified electrode using o -phenylenediamine ( o -PD) as the functional monomer and BPA as the template molecule. By integrating the high surface area of RGO, the readily accessible binding sites of TT-COF, and the efficient electron-transfer capability of AgNPs, the ternary AgNPs/TT-COF/RGO hybrid architecture achieves highly sensitive BPA detection. Under optimized conditions, the sensor exhibited a wide linear range of 0.25–500 nM and a low detection limit of 0.09 nM. With its excellent selectivity and sensitivity, the proposed sensor serves as a reliable platform for accurate BPA detection in complex food matrices. We propose an electrochemical sensor based on a MIP/AgNPs/TT-COF/RGO composite for highly selective detection of BPA in complex food samples. The sensor features a tightly integrated composite of RGO and TT-COF, which possesses ordered channels and an electron-rich surface, forming a three-dimensional porous conductive framework that significantly enhances electron transfer efficiency. AgNPs are then electrodeposited onto this framework, leveraging their localized surface plasmon resonance effect and catalytic activity to further amplify the electrochemical response signal at the interface. Finally, the incorporation of MIP enables specific recognition of BPA. Following systematic optimization, the sensor exhibits a broad linear range (0.25–500 nM) and low detection limit (0.09 nM), along with excellent selectivity, reproducibility, and stability. Download: Download high-res image (144KB) Download: Download full-size image
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高影响因子
Journal of Environmental Chemical Engineering
·
2025
·Vol. 13
·期 2
·116098
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IF 7.2
Ruiling Luo,Zhongcheng Yang,Yucheng Wang,Yue Yang,Lanyue Qi,Junwen Qi,Zhigao Zhu,Yujun Zhou,Jiansheng Li
Bisphenol (BPA) poses significant risks to the environment. Application of advanced oxidation processes with membrane filtration systems is an effective approach to pollutants removal and membrane fouling control. Herein, we successfully fabricated a Fe-loaded ZIF-8 hollow fiber carbon microfiltration membrane and applied it to the in-situ electro-Fenton process for BPA removal. The graphitic-N promotes the efficiency of electron transfer and the adsorption capacity of O 2 , while the introduction of pyridinic-N on the membrane enhances the selectivity of 2e - oxygen reduction reaction, facilitating the production of hydroxyl radicals. According to the results, the contact angle and resistance of the membrane were 65° and 33.2 Ω, respectively. The hydrophilicity facilitates a water film formation on the surface of membrane, thus preventing deep membrane pore blockage by pollutants. The good conductivity could accelerate electrochemical reactions and enhance electrostatic repulsion. Therefore, the BPA removal rate was 38.29 % with 0.72 L/(m 2 ·h·bar) flux loss for continuous 4-hour filtration under microfiltration conditions. For the control group without bias, the removal rate at the 4th hour was only 16.8 % with 3.59 L/(m 2 ·h·bar) flux loss, indicating a significant weakening of adsorption effect and severe membrane fouling. This study lays the foundation for the application of electro-Fenton technology in wastewater treatment with membrane as cathode.
研究领域:
环境科学
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材料科学
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化学工程
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水处理技术
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电化学
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产品关联
DOI
高影响因子
Journal of Water Process Engineering
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2025
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IF 6.7
Zhiqun Xu,Lina Han,Ying Yang,Lei Li,Bing Wang,Jiancheng Wang,Weiren Bao,Liping Chang
The persistent threat of emerging contaminants (ECs) in aquatic ecosystems necessitates advanced water purification strategies. Peroxymonosulfate (PMS)-activated advanced oxidation processes (AOPs) have emerged as promising solutions, where non-metallic heteroatom-doped carbon catalysts demonstrate enhanced PMS activation capabilities. However, reconciling high catalytic efficiency with long-term stability in metal-free systems remains challenging. Herein, we develop monodisperse nitrogen-doped carbon nanospheres (NCS) through a facile in situ doping strategy. This approach involves the synthesis of spherical resorcinol-formaldehyde resin via the Stöber method using resorcinol as the carbon source and melamine as the nitrogen source, followed by controlled carbonization. By systematically adjusting the resorcinol/melamine ratio, we achieved precise regulation of nitrogen configurations, obtaining NCS-3 with optimal N content (5.3 at %). Remarkably, the NCS-3/PMS system exhibited ultrafast bisphenol A (BPA) degradation (100 % removal within 15 min, rate constant = 0.346 min −1 ) across a broad pH range (3.0–11.0), while maintaining exceptional tolerance to coexisting anions. Through multi-spectroscopic investigations and mechanistic analyses, we elucidated a dual-pathway activation mechanism: Dominant nonradical process mediated by singlet oxygen ( 1 O₂) synergized with auxiliary radical pathway (O 2 ·- ). Experimental and theoretical evidence confirmed that pyridinic N serves as the primary catalytic center, promoting PMS adsorption/activation through enhanced charge redistribution. This work provides critical insights for designing high-performance metal-free catalysts and advances the mechanistic understanding of active site engineering in carbon-based PMS activation systems.
研究领域:
环境科学
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材料化学
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催化
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水处理
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纳米技术
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产品关联
DOI
高影响因子
Nano Energy
·
2021
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IF 17.881
Wenrou Tian,Jiahao Qiu,Najun Li,Dongyun Chen,Qingfeng Xu,Hua Li,Jinghui He,Jianmei Lu
Piezocatalysis that converts mechanical energy into chemical energy plays an important role in environmental purification and energy regeneration. In this work, a piezoelectric membrane of carbon nanofibers coated by few-layers SnS 2 nanosheets , a typical layered transition metal dichalcogenides (TMDs), for the first-reported piezocatalysis of hexavalent chromium (Cr (VI)) and bisphenol A (BPA). A boosted removal efficiency of Cr (VI) and BPA under ultrasonication are 3 and 4 times higher than that under illumination, respectively, which is attributed to the built-in electric field and band bending derived from the piezoelectricity of SnS 2 as well as the outstanding electronic liquidity of CNFs substrate. It was also found that the most oxidizing ·OH can be generated in SnS 2 /CNFs for piezocatalytic oxidative degradation of BPA compared to the absence of ·OH under illumination. Finally, the possible piezocatalytic mechanism of SnS 2 /CNFs is proposed. So it provides a new view on piezocatalysis of TMDs for environmental remediation by collecting mechanical energy.
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
危险品化学品经营许可证（带存储）