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学者姓名:李小娟
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Developing the Co-based catalysts with high reactivity for the sulfate radical (SO4−·)–based advanced oxidation processes (SR-AOPs) has been attracting numerous attentions. To improve the peroxymonosulfate (PMS) activation process, a novel Co-based catalyst simultaneously modified by bamboo carbon (BC) and vanadium (V@CoO-BC) was fabricated through a simple solvothermal method. The atenolol (ATL) degradation experiments in V@CoO-BC/PMS system showed that the obtained V@CoO-BC exhibited much higher performance on PMS activation than pure CoO, and the V@CoO-BC/PMS system could fully degrade ATL within 5 min via the destruction of both radicals (SO4−· and O2−··) and non-radicals (1O2). The quenching experiments and electrochemical tests revealed that the enhancing mechanism of bamboo carbon and V modification involved four aspects: (i) promoting the PMS and Co ion adsorption on the surface of V@CoO-BC; (ii) enhancing the electron transfer efficiency between V@CoO-BC and PMS; (iii) activating PMS with V3+ species; (iv) accelerating the circulation of Co2+ and Co3+, leading to the enhanced yield of reactive oxygen species (ROS). Furthermore, the V@CoO-BC/PMS system also exhibited satisfactory stability under broad pH (3–9) and good efficiency in the presence of co-existing components (HCO3−, NO3−, Cl−, and HA) in water. This study provides new insights to designing high-performance, environment-friendly bimetal catalysts and some basis for the remediation of antibiotic contaminants with SR-AOPs. © The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2024.
Keyword :
Antibiotic degradation Antibiotic degradation Biochar modification Biochar modification Co-based catalyst Co-based catalyst Peroxymonosulfate activation Peroxymonosulfate activation V modification V modification
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GB/T 7714 | Hu, Y. , Yang, K. , Lin, Y. et al. Performance and mechanistic studies of rapid atenolol degradation through peroxymonosulfate activation by V, Co, and bamboo carbon catalyst [J]. | Environmental Science and Pollution Research , 2024 , 31 (25) : 36761-36777 . |
MLA | Hu, Y. et al. "Performance and mechanistic studies of rapid atenolol degradation through peroxymonosulfate activation by V, Co, and bamboo carbon catalyst" . | Environmental Science and Pollution Research 31 . 25 (2024) : 36761-36777 . |
APA | Hu, Y. , Yang, K. , Lin, Y. , Weng, X. , Jiang, Y. , Huang, J. et al. Performance and mechanistic studies of rapid atenolol degradation through peroxymonosulfate activation by V, Co, and bamboo carbon catalyst . | Environmental Science and Pollution Research , 2024 , 31 (25) , 36761-36777 . |
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Developing adsorbents with high performance and long service life for effective extracting the trace organochlorine pesticides (OCPs) from real water is attracting numerous attentions. Herein, a self-standing covalent organic framework (COF-TpPa) membrane with fiber morphology was successfully synthesized by using electrospun nanofiber membranes as template and employed as solid-phase microextraction (SPME) coating for ultra-high sensitivity extraction and analysis of trace OCPs in water. The as-synthesized COF-TpPa membrane exhibited a high specific surface area (800.83 m(2) g(-1)), stable nanofibrous structure, and excellent chemical and thermal stability. Based on the COF-TpPa membrane, a new SPME analytical method in conjunction with gas chromatography-mass spectrometry (GC-MS) was established. This proposed method possessed favorable linearity in concentration of 0.05-2000 ng L-1, high sensitivity with enrichment factors ranging from 2175 to 5846, low limits of detection (0.001-0.150 ng L-1), satisfactory precision (RSD < 10 %), and excellent repeatability (>150 cycles), which was better than most of the reported works. Additionally, the density functional theory (DFT) calculations and XPS results demonstrated that the outstanding enrichment performance of the COF-TpPa membrane was owing to synergistic effect of pi-pi stacking effects, high specific surface area and hydrogen bonding. This work will expect to extend the applications of COF membrane to captures trace organic pollutants in complex environmental water, as well as offer a multiscale interpretation for the design of effective adsorbents.
Keyword :
Covalent organic framework nanofibrous Covalent organic framework nanofibrous Direct immersion solid-phase microextraction Direct immersion solid-phase microextraction Gas chromatography-mass spectrometry Gas chromatography-mass spectrometry membrane membrane Organochlorine pesticides Organochlorine pesticides
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GB/T 7714 | Lin, Chunxiang , Weng, Yufang , Lin, Yule et al. Porous covalent organic framework nanofibrous membrane for excellent enrichment and ultra-high sensitivity detection of trace organochlorine pesticides in water [J]. | JOURNAL OF CHROMATOGRAPHY A , 2024 , 1721 . |
MLA | Lin, Chunxiang et al. "Porous covalent organic framework nanofibrous membrane for excellent enrichment and ultra-high sensitivity detection of trace organochlorine pesticides in water" . | JOURNAL OF CHROMATOGRAPHY A 1721 (2024) . |
APA | Lin, Chunxiang , Weng, Yufang , Lin, Yule , Liu, Yifan , Li, Xiaojuan , Lv, Yuancai et al. Porous covalent organic framework nanofibrous membrane for excellent enrichment and ultra-high sensitivity detection of trace organochlorine pesticides in water . | JOURNAL OF CHROMATOGRAPHY A , 2024 , 1721 . |
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Developing the transition metal catalysts with high reactivity for the sulfate radical (SO4 -center dot) based advanced oxidation processes (SR-AOPs) has been attracting numerous attentions. To improve the peroxymonosulfate (PMS) activation process mediated by Co-based catalysts, a vanadium-cobalt bimetallic catalyst (V@CoO) was fabricated by modification vanadium through a simple solvothermal method. The pollutants degradation experiments showed that the obtained V@CoO exhibited much higher performance on PMS activation (5.55-8.33 times larger of apparent rate constants) than pure CoO, and the V@CoO/PMS system could quickly degrade various organic contaminants within 5 min under the attack of both radicals (SO4 -center dot and O2-center dot) and non-radicals (1O2). The density functional theory (DFT) calculations and electrochemical tests revealed that the enhancing mechanism of V modification involved four aspects: (i) promoting the PMS adsorption on the surface of V@CoO; (ii) enhancing the electron transfer efficiency between V@CoO and PMS; (iii) activating PMS with V3+ and V4+ species; (iv) accelerating the circulation of Co2+ and Co3+, leading to the promotion on the production of reactive oxygen species (ROS). Furthermore, the V@CoO/PMS system also exhibited satisfactory stability in a broad pH range and good efficiency in the presence of co-existing components (HCO3-, NO3-, PO43- , Cl- and HA) in water. This study will provide new insights to designing high-performance, environment-friendly bimetal catalysts and some basis for the remediation of organic contaminants with SR-AOPs.
Keyword :
Co-based catalyst Co-based catalyst Degradation Degradation Organic pollutants Organic pollutants Peroxymonosulfate activation Peroxymonosulfate activation V modification V modification
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GB/T 7714 | Jiang, Yanting , Weng, Xin , Hu, Yihui et al. Enhanced peroxymonosulfate (PMS) activation process mediated by vanadium modified CoO catalyst for rapid degradation of organic pollutants: Insights into the role of V [J]. | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 12 (2) . |
MLA | Jiang, Yanting et al. "Enhanced peroxymonosulfate (PMS) activation process mediated by vanadium modified CoO catalyst for rapid degradation of organic pollutants: Insights into the role of V" . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING 12 . 2 (2024) . |
APA | Jiang, Yanting , Weng, Xin , Hu, Yihui , Lv, Yuancai , Yu, Zhendong , Liu, Yifan et al. Enhanced peroxymonosulfate (PMS) activation process mediated by vanadium modified CoO catalyst for rapid degradation of organic pollutants: Insights into the role of V . | JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING , 2024 , 12 (2) . |
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随着锂离子电池(LIBs)需求量的急剧增长,必将产生大量废旧LIBs,如若处置不当,将带来严重的环境污染问题.废旧LIBs的正极材料中含有大量稀缺有价金属,对这些金属进行回收会产生环境和经济的双重效益.相较于传统的正极材料中金属组分的分离纯化回收技术,正极材料直接再生的策略因其具有工艺简单、能耗低、回收周期短、产品附加值高等优势而备受关注.本文综述了共沉淀法、溶胶-凝胶法、固相烧结法、水热法、离子热/熔盐法和电化学修复法6种废旧LIBs正极材料直接再生技术及其优缺点.其中共沉淀法和溶胶-凝胶法因其相对复杂的步骤、较高的设备要求和试剂成本,在工业化应用中具有一定的局限性;固相烧结法、水热法、离子热/熔盐法和电化学修复法因其便捷性和经济性,具有巨大的发展机会.同时展望了废旧LIBs正极材料直接再利用的前景和发展趋势,旨在为废旧LIBs回收领域研究提供参考.
Keyword :
回收 回收 正极材料 正极材料 直接再生 直接再生 锂离子电池(LIBs) 锂离子电池(LIBs)
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GB/T 7714 | 李红彦 , 谢书涵 , 张燕如 et al. 废旧锂离子电池正极材料直接再生技术研究进展 [J]. | 化工进展 , 2024 , 43 (9) : 5207-5216 . |
MLA | 李红彦 et al. "废旧锂离子电池正极材料直接再生技术研究进展" . | 化工进展 43 . 9 (2024) : 5207-5216 . |
APA | 李红彦 , 谢书涵 , 张燕如 , 王永净 , 王永好 , 吕源财 et al. 废旧锂离子电池正极材料直接再生技术研究进展 . | 化工进展 , 2024 , 43 (9) , 5207-5216 . |
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Detecting trace endocrine disruptors in water is crucial for evaluating the water quality. In this work, a innovative modified polyacrylonitrile@cyanuric chloride-triphenylphosphine nanofiber membrane (PAN@CC-TPS) was prepared by in situ growing triazine porous organic polymers on the polyacrylonitrile (PAN) nanofibers, and used in the dispersive solid phase extraction (DSPE) to enrich trace nitrobenzene phenols (NPs) in water. The resluted PAN@CC-TPS nanofiber membrane consisted of numerous PAN nanofibers cover with CC-TPS solid spheres (similar to 2.50 mu m) and owned abundant functional groups, excellent enrichment performance and good stability. In addition, the method based on PAN@CC-TPS displayed outstanding capacity in detecting the trace nitrobenzene phenols, with 0.50-1.00 mu g/L of the quantification, 0.10-0.80 mu g/L of the detection limit, 85.35-113.55 % of the recovery efficiency, and 98.08-103.02 of the enrichment factor, which was comparable to most materials. Meanwhile, when PAN@CC-TPS was adopted in the real water samples (sea water and river water), the high enrichment factors and recovery percentages strongly confirmed the feasibility of PAN@CC-TPS for enriching and detecting the trace NPs. Besides, the related mechanism of extracting NPs on PAN@CC-TPS mainly involved the synergistic effect of hydrogen bonding, pi-pi stacking and hydrophobic effect.
Keyword :
Adsorption Adsorption Dispersive solid phase extraction Dispersive solid phase extraction Enrichment Enrichment Nanofiber membrane Nanofiber membrane Nitro-phenol Nitro-phenol Triazine Triazine
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GB/T 7714 | Weng, Xin , Liu, Shuting , Huang, Jian et al. Efficient dispersive solid phase extraction of trace nitrophenol pollutants in water with triazine porous organic polymer modified nanofiber membrane [J]. | JOURNAL OF CHROMATOGRAPHY A , 2024 , 1717 . |
MLA | Weng, Xin et al. "Efficient dispersive solid phase extraction of trace nitrophenol pollutants in water with triazine porous organic polymer modified nanofiber membrane" . | JOURNAL OF CHROMATOGRAPHY A 1717 (2024) . |
APA | Weng, Xin , Liu, Shuting , Huang, Jian , Lv, Yuancai , Liu, Yifan , Li, Xiaojuan et al. Efficient dispersive solid phase extraction of trace nitrophenol pollutants in water with triazine porous organic polymer modified nanofiber membrane . | JOURNAL OF CHROMATOGRAPHY A , 2024 , 1717 . |
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As the cheap and efficient catalysts, the iron-based catalysts have been considered as one of the most promising catalysts for peroxydisulfate (PDS) activation and the development of high-performance iron-based catalysts are attracting growing attentions. In this work, a magnetic Fe-based catalysts (Fe/NC-1000) was obtained by using Fe modified ZIF-8 as the precursor and used to activate the PDS for the degradation of perfluorooctane sulphonate (PFOS). Morphology and structure analysis showed that the resulted Fe/NC-1000 catalyst was displayed porous spheres (40-60 nm) and mainly composed of Fe0, FeNx and carbon. When Fe/NC-1000 was employed to activate the PDS (0.1 g/L of catalyst dosage, 0.5 g/L of PDS dosage and at initial pH of 4.6), the Fe/NC-1000/PDS system exhibited excellent efficiency (97.9 & PLUSMN; 0.1) % for PFOS (10 mg/L) degradation within 30 min. The quenching tests and EPR results revealed that the Fe/NC-1000/PDS system degraded PFOS primarily through singlet oxygen (1O2) evolution and electron-transfer process. Besides, based on the degradation byproducts determined by LC-MS-MS, the PFOS first occurred de-sulfonation to form PFOA, and then the resulted PFOA underwent stepwise defluorination in the Fe/NC-1000/PDS system. Density Functional Theory (DFT) calculations and electrochemistry tests strongly confirmed that Fe/NC-1000 exhibited high electron transfer efficiency, resulting in promoted performance on activating PDS. Importantly, the results of Ecological Structure-Activity Relationship (ECOSAR) analysis showed that the intermediates were lowly toxic during the PFOS degradation, manifesting a green process for PFOS removal. This study would provide more understandings for the persulfate activation process mediated by Fe-based catalysts for Perfluorinated alkyl substances (PFAS) elimination.
Keyword :
Degradation Degradation Fe-based catalyst Fe-based catalyst MOFs MOFs Perfluorooctane sulphonate Perfluorooctane sulphonate Peroxydisulfate activation Peroxydisulfate activation
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GB/T 7714 | Jiang, Yanting , Hu, Yihui , Yu, Zhendong et al. Rapid PFOS mineralization with peroxydisulfate activation process mediated by N modified Fe-based catalyst [J]. | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY , 2023 , 263 . |
MLA | Jiang, Yanting et al. "Rapid PFOS mineralization with peroxydisulfate activation process mediated by N modified Fe-based catalyst" . | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 263 (2023) . |
APA | Jiang, Yanting , Hu, Yihui , Yu, Zhendong , Lv, Yuancai , Liu, Yifan , Li, Xiaojuan et al. Rapid PFOS mineralization with peroxydisulfate activation process mediated by N modified Fe-based catalyst . | ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY , 2023 , 263 . |
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A boron and iron co-doped biochar (B-Fe/biochar) from Masson pine bark was fabricated and used to activate peroxydisulfate (PDS) for the degradation of guaiacol (GL). The roles of the dopants and the contribution of the radical and non-radical oxidations were investigated. The results showed that the doping of boron and iron significantly improved the catalytic activity of the biochar catalyst with a GL removal efficiency of 98.30% within 30 min. The degradation of the GL mainly occurred through the generation of hydroxyl radicals (center dot OHs) and electron transfer on the biochar surface, and a non-radical degradation pathway dominated by direct electron transfer was proposed. Recycling the B-Fe/biochar showed low metal leaching from the catalyst and satisfactory long-term stability and reusability, providing potential insights into the use of metal and non-metal co-doped biochar catalysts for PDS activation.
Keyword :
B/Fe co-doping B/Fe co-doping biochar biochar Masson pine bark Masson pine bark peroxydisulfate activation peroxydisulfate activation
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GB/T 7714 | Huang, Jian , Zhu, Yu , Bian, Huiyang et al. Insights into Enhanced Peroxydisulfate Activation with B and Fe Co-Doped Biochar from Bark for the Rapid Degradation of Guaiacol [J]. | MOLECULES , 2023 , 28 (22) . |
MLA | Huang, Jian et al. "Insights into Enhanced Peroxydisulfate Activation with B and Fe Co-Doped Biochar from Bark for the Rapid Degradation of Guaiacol" . | MOLECULES 28 . 22 (2023) . |
APA | Huang, Jian , Zhu, Yu , Bian, Huiyang , Song, Liang , Liu, Yifan , Lv, Yuancai et al. Insights into Enhanced Peroxydisulfate Activation with B and Fe Co-Doped Biochar from Bark for the Rapid Degradation of Guaiacol . | MOLECULES , 2023 , 28 (22) . |
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In this study, the boron-doped iron-carbon composite (Fe@B/C-2) was prepared via a simple solvothermal and secondary calcination process by using iron metal-organic frameworks (Fe-MOFs) as precursor. The obtained Fe@B/C-2 possessed abundant active sites and low iron ion leaching, and exhibited excellent performance on peroxydisulfate (PDS) activation for efficient PFOS (10 mg/L) degradation (94 %) in 60 min, with 0.2 g/L of catalyst dosage, 1.0 g/L of PDS dosage and at 5.0 of initial pH. The radical scavenging and electron paramagnetic resonance (EPR) tests demonstrated that SO4 & sdot;- and & sdot;OH were the primary active species during PFOS elimination. Under the attack of these species, PFOS was first transformed into PFOA, followed by a sequential defluorination process, and lastly mineralized into CO2 and F. Notably, DFT results revealed that Fe species,-BC3/-BC2O structures on the carbon matrix performed crucial roles in PDS activation. The extraordinary catalytic activity of Fe@B/C-2 was attributable to the synergistic effects of Fe nanoparticles and the B-doped on carbon matrix. The doped B not only could activate the inert carbon skeleton and provided more catalytic centers, but also could accelerate the electron transfer efficiency, leading to a boost in PDS decomposition.
Keyword :
Degradation Degradation Fe -based catalyst Fe -based catalyst Perfluorooctane sulfonic acid Perfluorooctane sulfonic acid Peroxydisulfate activation Peroxydisulfate activation
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GB/T 7714 | Jiang, Yanting , Yu, Zhendong , Lv, Yuancai et al. Insights to PFOS elimination with peroxydisulfate activation mediated by boron modified Fe/C catalysts: Enhancing mechanism of boron and PFOS degradation pathway [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 652 : 1743-1755 . |
MLA | Jiang, Yanting et al. "Insights to PFOS elimination with peroxydisulfate activation mediated by boron modified Fe/C catalysts: Enhancing mechanism of boron and PFOS degradation pathway" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 652 (2023) : 1743-1755 . |
APA | Jiang, Yanting , Yu, Zhendong , Lv, Yuancai , Li, Xiaojuan , Lin, Chunxiang , Ye, Xiaoxia et al. Insights to PFOS elimination with peroxydisulfate activation mediated by boron modified Fe/C catalysts: Enhancing mechanism of boron and PFOS degradation pathway . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 652 , 1743-1755 . |
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Heteroatomic co-doped carbon materials have broad application prospect in the field of persulfate-based advanced oxidation processes. In this paper, nitrogen and chlorine co-doped ZIF-8 derived porous carbon materials (NClC) were synthesized by a two-step pyrolysis method, as follows: 1.5 g ZIF-8 was transferred to a quartz boat, calcined for 6 h at 800. with a heating rate of 5 degrees C/min in a N-2 atmosphere, and cool naturally to room temperature; the black carbon material obtained was further treated with 0.5 mol/L HCl for 24 h to remove the residual Zn and then dried in a 60 degrees C oven to acquire N-doped porous carbon (NC); subsequently, 1.2 g NH4Cl was uniformly dissolved in 20 mL ultrapure water, and 0.15 g of the synthesized NC was added; after stirring and reaction for 5 h, the mixture was placed in a 60. oven to dry overnight; the dried sample was ground to a uniform powder and then calcined for 2 h at 700, 800, 900 or 1000 degrees C in a N-2 atmosphere to obtain NClCX, in which the "X" represents the secondary calcination temperature (degrees C). Additionally, NC900 was obtained by calcination of NC at 900. in the same way without any modification. The composition and structure of all carbon materials were characterized by field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), X-ray diffraction (XRD), Raman, BET and X-ray photoelectron spectroscopy (XPS). Phenol was employed as a targeted contaminant to explore the performance of NClCX on PMS activation, and the results showed NClC900 exhibited excellent catalytic performance with 97.7% of phenol and 72.4% of total organic carbon (TOC) removal in 30 min. NClC900/PMS system presented excellent acid-base tolerance and anti-interference ability, which can effectively remove phenol over a broad pH range (pH=3 similar to 9) or under the interference of various anions (NO3-, Cl-, H2PO4-, HCO3-) and humic acid (HA). Moreover, the NClC900/PMS system performed outstanding feasibility in the removal of dyes, antibiotics, phenols, pesticide and purification of actual contaminated water samples. Cyclic experiments showed that NClC900 had good stability and could remove 72.1% of phenol after repeated use for 4 times. Quenching experiments, electron paramagnetic resonance and electrochemical analysis indicated that O-1(2) and surface-bound SO4 center dot- were the main active species for phenol degradation, and the graphite N, C-Cl of NClC900 were the key active sites for generating of O-1(2) and surface-bound SO4 center dot-.
Keyword :
co-doped co-doped metal-organic frameworks metal-organic frameworks peroxymonosulfate peroxymonosulfate singlet oxygen singlet oxygen surface-bound radical surface-bound radical
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GB/T 7714 | Li, Xiaojuan , Ye, Ziyu , Xie, Shuhan et al. Study on Performance and Mechanism of Phenol Degradation through Peroxymonosulfate Activation by Nitrogen/Chlorine Co-doped [J]. | ACTA CHIMICA SINICA , 2022 , 80 (9) : 1238-1249 . |
MLA | Li, Xiaojuan et al. "Study on Performance and Mechanism of Phenol Degradation through Peroxymonosulfate Activation by Nitrogen/Chlorine Co-doped" . | ACTA CHIMICA SINICA 80 . 9 (2022) : 1238-1249 . |
APA | Li, Xiaojuan , Ye, Ziyu , Xie, Shuhan , Wang, Yongjing , Wang, Yonghao , Lv, Yuancai et al. Study on Performance and Mechanism of Phenol Degradation through Peroxymonosulfate Activation by Nitrogen/Chlorine Co-doped . | ACTA CHIMICA SINICA , 2022 , 80 (9) , 1238-1249 . |
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杂原子共掺杂碳材料在过硫酸盐活化领域具有广阔的应用前景.本工作通过两步煅烧法合成了氮氯共掺杂ZIF-8衍生多孔碳材料(NClC),并以苯酚为目标污染物,考察其活化过一硫酸盐(PMS)的催化性能,结果表明,30 min内,0.04 g/L NClC900活化0.3 g/L PMS可去除水中97.7%的苯酚(50 mg/L),且总有机碳去除率可达72.4%;NClC900/PMS体系具备优异的酸碱耐受性(pH=3~9)和抗干扰能力,无机阴离子和腐植酸对其影响较小,且该体系还可有效去除水中的染料、抗生素、酚类及农药等有机污染物;循环实验结果表明,NClC900在重复使用4次后其苯酚去除率可达72.1...
Keyword :
共掺杂 共掺杂 单线态氧 单线态氧 表面结合自由基 表面结合自由基 过一硫酸盐 过一硫酸盐 金属有机骨架材料 金属有机骨架材料
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GB/T 7714 | 李小娟 , 叶梓瑜 , 谢书涵 et al. 氮氯共掺杂多孔碳活化过一硫酸盐降解苯酚的性能及机理研究 [J]. | 化学学报 , 2022 , 80 (09) : 1238-1249 . |
MLA | 李小娟 et al. "氮氯共掺杂多孔碳活化过一硫酸盐降解苯酚的性能及机理研究" . | 化学学报 80 . 09 (2022) : 1238-1249 . |
APA | 李小娟 , 叶梓瑜 , 谢书涵 , 王永净 , 王永好 , 吕源财 et al. 氮氯共掺杂多孔碳活化过一硫酸盐降解苯酚的性能及机理研究 . | 化学学报 , 2022 , 80 (09) , 1238-1249 . |
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