SCIENCE OF THE TOTAL ENVIRONMENT
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2021
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IF 7.963
Jiana Jing,Md. Nahid Pervez,Peipei Sun,Chengjin Cao,Bin Li,Vincenzo Naddeo,Wei Jin,Yaping Zhao
Although it can effectively degrade refractory organic pollutants, advanced oxidation processes (AOPs) can be seriously interfered with the co-existing substance in salinity water . Herein, three-dimensional hierarchical cobalt-doped LaFeO 3 perovskites (LaCo 0.5 Fe 0.5 O 3 ) micron spheres composed of nano-rods were hydrothermally synthesized and applied to activate peroxymonosulfate (PMS) for degrading bisphenol A (BPA). Nearly 100% BPA was removed by LaCo 0.5 Fe 0.5 O 3 /PMS system in presence of more than 50 mM Cl − within only 2 min compared that of 30 min without Cl − , which was attributed to reactive chlorine species (RCS) including Cl • and HOCl with higher oxidation capacity. •OH and SO 4 •− produced by LaCo 0.5 Fe 0.5 O 3 activating PMS played crucial roles as the source of RCS in LaCo 0.5 Fe 0.5 O 3 /Cl − /PMS system. The synergistic effect between ROS and RCS promoted by the enhanced oxygen vacancies and the efficient redox recycling of Fe III /Fe II and Co III /Co II . Other anions like SO 4 2− and NO 3 − hardly affected the BPA degradation. BPA degradation efficiency was also improved either in a wide pH range or in the presence of natural organic matters in salty water. This work also demonstrated the potential application of Fe Co bimetallic LaCo 0.5 Fe 0.5 O 3 activating PMS system for degradation of BPA or other organic micropollutants in seawater system.
研究领域:
环境科学
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化学工程
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DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Mingyong Wang,Taiguang Li,Qingzheng Hou,Yongmei Hao,Zhongming Wang
In this work, Co and Ce doped TiO 2 (CoCeTi) with low content of Co and Ce was successfully prepared by a facile one-step sol-gel solvothermal process for activating Peroxymonosulfate (PMS) to degrade Polycyclic aromatic hydrocarbons (PAHs). The phenanthrene degradation rate was 98.2% effectively in 15 min by CoCeTi (50.0 mg/L) activation PMS (0.50 mmol/L) under visible light. S O 4 • − , O 2 • – , h + and 1 O 2 were verified as the dominant reactive species for PAHs degradation. The collective effect of CoCeTi, PMS and visible light irradiation has been discussed. The possible phenanthrene degradation pathway was proposed through intermediates analysis. CoCeTi composed of Co 3 O 4 , CeO 2 and TiO 2 was confirmed. Outstandingly, CoCeTi/PMS/visible light system has very low cobalt (0.036 mg/L) and cerium (0.27 mg/L) leaching. Due to CoCeTi having good activated PMS properties and other excellent characteristics, it has potential application for PAHs or other organic pollutants degradation .
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
Journal of Water Process Engineering
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2023
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IF 7
Hao Wang,Haibo Liu,Ziyang Chu,Fuwei Sun,Xuehua Zou,Qiang Wang,Tianhu Chen,Dong Chen,Hanlin Wang
This study showcases the performance of Fe 3 O 4 (S600) derived from the decomposition of siderite in activating peroxymonosulfate (PMS) for the 2,4-dichlorophenol (2,4-DCP) degradation, as well as the enhancement of visible light in the S600/PMS system. With the involvement of visible light, 2 g/L Fe 3 O 4 and 0.5 mM PMS achieved 100 % degradation of 2,4-DCP within 70 min. Singlet oxygen ( 1 O 2 ) and hydroxyl radicals ( OH) were the primary reactive species responsible for 2,4-DCP degradation under visible light irradiation based on the scavenging experiments and electron paramagnetic resonance (EPR) analysis. Importantly, compared to the absence of visible light, the visible light boosted 1 O 2 production and accelerated 2,4-DCP degradation. The effects of various operating parameters on the degradation efficiency were also examined, and the intermediates and possible degradation pathways of 2,4-DCP were identified. This study proves that the integrated utilization of natural siderite derivatives to activate oxidants for pollutant degradation is a promising approach.
研究领域:
环境科学
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化学工程
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2023
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IF 6.2
Xiaoxi Yu,Xiaocui Wu,Fang Guo,Jingping Liu,Qingshan Zhao
As a promising advanced oxidation process , photo-assisted peroxymonosulfate (PMS) activation for wastewater treatment has attracted widespread attentions. However, rational design of synergetic and recyclable catalysts for PMS photo-activation remains a big challenge. In this study, a carbon layer-coated amorphous CoO x supported on graphitic carbon nitride (CoO x @C/g-C 3 N 4 ) composite was fabricated to drive visible-light-assisted activation of PMS for efficient organic pollutant degradation. Amorphous CoO x nanoparticles were in-situ grown on two-dimensional g-C 3 N 4 substrate, among which a carbon layer serves as a high-speed electron transmission channel, facilitating the separation of photogenerated electron-hole pairs and accelerating the Co 3+ /Co 2+ redox cycle. Simultaneously, the carbon layer provides a protective film to suppress Co leaching, thereby improving the catalytic activity and reusability. Owing to the unique heterostructure and synergetic effect, the optimized 6% CoO x @C/g-C 3 N 4 composite exhibits superior catalytic efficiency and excellent cycling stability towards the degradation of various organic pollutants, which displays nearly 100% elimination of tetracycline (TC) within 80 mins. The h + , SO 4 •- and •OH are determined as the main contributors in the visible light-assisted PMS activation system, and the possible catalytic mechanism is also proposed. This work demonstrates a feasible strategy for constructing synergetic and effective photo-activation PMS catalysts for water remediation.
研究领域:
环境科学
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化学工程
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材料科学
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水处理
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DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
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2022
·Vol. 29
·期 40
·61446-61456
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IF 5.19
Zhao Zheng-Yin,Xiong Jun,Wang Yuan,Cui Caixi
It is significant to explore the advanced oxidation process (AOP) for antibiotic degradation. Herein, a peroxymonosulfate (PMS) activator, Sr 2 FeO 4 /SBA-15 (SFS) heterogeneous catalyst, was synthesized by in situ growth of Sr 2 FeO 4 on the surface of SBA-15. In SFS/PMS catalytic system, Sr atom provided electrons to Fe(II) ↔Fe(III) ↔Fe(II) redox cycle through Sr-O-Fe bonds for PMS activation. The SFS catalyst could activate PMS to generate a free radical coexistence system, including sulfate radical (SO 4 ∙ − ) and hydroxyl radicals (∙OH). The catalyst possessed high catalytic activity and high stability. The degradation efficiency of sulfapyridine (SAD) over the SFS/PMS catalytic system could reach 99.0% after 90 min reaction. After the 5th reuse, the degradation efficiency of SAD was still more than 94.0%, and the phase structure of the catalyst did not alter. The low ion leaching concentration would be more conducive to reuse and avoiding secondary pollution, in comparison to homogeneous catalysts. This catalyst can be widely applied to organic wastewater treatment.-->
研究领域:
环境科学
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化学工程
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催化
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废水处理
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DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2022
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IF 7.926
Yingzi Lin,Jing Chen,Mingliang Zhou,Gen Liu,Siwen Li,Chunyan Shi,Mengshi Wang,Shenglin Qi
In this paper, the efficiency and mechanism of using nitrilotriacetic acid(NTA) as a complexing agent to enhance the zero-valent iron(Fe 0 )/peroxymonosulfate(PMS) system to remove sulfamethazine(SMZ) from water are discussed. Research results show that the addition of NTA increases the soluble iron by 3.05 times, and the decomposition rate of PMS increases from 27% to 62%. Keeping other conditions unchanged and increasing the concentration of PMS to 0.2 mM, the degradation rate reaches the peak, continued increase of PMS concentration will decrease the degradation rate. The degradation rate of SMZ is positively correlated with Fe 0 concentration. The effect of different inorganic ions on the degradation of SMZ was investigated. The high concentration of Cl − promoted the degradation effect, and the reaction rate constant of the system is increased by 1.67 times when the Cl − dosing is 10 mM. The PMS/Fe 0 /NTA system degrades SMZ up to 79.36% in actual water bodies. The degradation of SMZ is mainly by Smiles-type rearrangement, sulfonamide bond breaking, etc. The toxicity test proves that the inhibition rate of luminescent bacteria before and after degradation decreases from 61.86% to 40.47%, with an overall decreasing trend of toxicity.
研究领域:
环境科学
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水处理
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化学工程
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毒理学
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DOI
高影响因子
Advanced Energy and Sustainability Research
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2024
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IF 6.2
Hong Tu,Ying Xu,Shun-shun Chen,Ya Wang,Sheng-xin Guo,Jian Wu
The high catalytic activity of photocatalysts is greatly influenced by the efficient separation of photogenerated charge carriers. In this study, six g-C 3 N 4 -based COFs are designed and synthesized, and CN-203 is identified as the most efficient photocatalyst through experimental screening. Quantitative measurements reveal that singlet oxygen production is ≈100 times that of ·O 2 − and 5000 times that of ·OH. When combined with PMS, CN-203 exhibits degradation rates for RhB and TC that are ≈30 ( k = 0.0293 s −1 ) and 10 ( k = 0.2940 min −1 ) times faster than those of CN550(RhB, k = 0.0531 min −1 ; TC, k = 0.0301 min −1 ), respectively. Structural simulations and calculations show that the modified CN-203 have better electron–hole separation in the excited state, and the energy gap between HOMO and LUMO is significantly reduced after modification. The study also revealed the structure–function relationship between the modification of the same site with different functional groups and its effect on photocatalysis. Overall, this study provides valuable insights into the relationship between surface structure and photocatalytic applications.
研究领域:
材料科学
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化学
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环境科学
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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
Jian Tang,Yujie Wang,Jun Ma,Yujie Chen,Ming Chen
In this study, we selected rice straw, wheat straw and corn cob as raw materials to successfully prepare cobalt-nitrogen co-doped biomass-based carbon nanotubes composites (BM@CoNCNTs) with Co-N x sites highly dispersed on porous biochar carrier, which could effectively activate peroxymonosulfate (PMS) to remove tobacco mosaic virus (TMV) in water. Particularly, BM@CoNCNTs-CC, with its confined carbon nanotubes and high-density Co-N x sites, enhanced the Co 2+ /Co 3+ cycle and direct adsorption of PMS to generate Co(IV)=O and 1 O 2 , playing a dominant role. This led to the effective disruption of TMV coat protein and degradation of its genome within 5 min, achieving up to 6 log 10 removal efficiency. Additionally, BM@CoNCNTs-CC/PMS system maintained efficient catalytic removal performance even in complex water matrices (river water and tap water). Overall, our research not only elucidates the production of efficient biomass-based catalysts for environmental remediation, but also highlights the application potential of biomass-based carbon nanotubes composites enriched with Co-N x sites.
研究领域:
环境科学
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纳米技术
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水处理
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病毒学
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DOI
高影响因子
npj Clean Water
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2023
·Vol. 6
·期 1
·1-11
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IF 11.4
Li Chao,Li Jiale,Huang Niu,Kong Xin Ying,Xiao Qingyi,Huang Yingping,Wong Po Keung,Ye Liqun
Advanced oxidation technology based on peroxonosulfate (PMS) has attracted extensive attention in water treatment research due to its fast reaction speed and wide pH range adaptability. Cobalt-based catalysts are considered to be one of the most effective reagents for PMS activation in various PMS activation methods. However, Co-ion leaching and difficulty in recovery have greatly hindered its practical applications. Herein, we developed a robust membrane constructed by nitrogen-doped carbon nanotubes embedded with cobalt nanoparticles (Co-NC) to concurrently address the Co-ion leaching and recovery issues. Based on our customization, continuous water flow reactor, the Co-NC membrane exhibited excellent catalytic activity and stability, in which it demonstrated a remarkable sterilization efficiency of 99.9999% against E. coli , and it retained a superior stability of 96.29% after 40 repeated cycles. Fewer attempts to put such efficient heterogeneous advanced oxidation processes (AOPs) into practical application, to mimic real-life applications, the performance of the Co-NC/PMS system was extended to the water taken from Qiuxi River. Remarkably, there is no deterioration in performance over 12 h of continuous real sewage processing. Mechanistic studies revealed that abundant high-valence metals (Co IV =O) were generated in the system, which can attack and penetrate into the cell membrane to destroy its intracellular defense system. This work provides useful insights into designing robust membranes with superior efficiency and stability for PMS-based advanced oxidation technology.
研究领域:
环境科学
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水处理技术
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材料科学
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催化
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微生物学
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产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Jinxu Zhu,Zhipeng Yuan,Jing Zhang,Xinfu Zhao,Sijia Liu,Huili Yu,Jinyi Ren,Mengqing Su,Shaojun Liu,Xibin Yi
Solar-driven interfacial evaporation (SDIE) technology is considered as a promising green technology for seawater desalination and wastewater treatment. However, current SDIE systems commonly suffer from high heat conduction losses and insufficient organic pollutant degradation capacity, limiting their application in treating organic wastewater with complex compositions. This study innovatively constructed an integrated system combining SDIE with PMS activation catalysis based on a chitosan aerogel composite (CAC). Through structural regulation of water transport channels, it can reduce heat conduction losses while ensuring sufficient water supply, achieving simultaneous enhancement of evaporation efficiency and catalytic degradation efficiency. Under 1 sun illumination, an evaporation rate of 1.54 kg⋅m −2 ⋅h −1 with a solar efficiency of 105.72 % was achieved. The increase in interface temperature and the concentration enrichment effect caused by evaporation effectively promoted the PMS activation catalytic reaction. Under CAC mediated PMS activation, the degradation efficiency of 100 ppm Rhodamine B solution reaches 92.6 % within 90 min. This study provides new material design strategies and theoretical support for optimizing energy and mass transfer and enabling multifunctional integration in SDIE systems.
研究领域:
环境科学技术
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材料科学
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太阳能利用
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水处理
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催化
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
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2026
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IF 5.2
Eshtiag Abdalla Ibrahim Mohamed,Li-Ya Liang,Da-Jun Wu,Jia-Yi Chen,Ya-Ting Gao,Da-Wei Li,Roshila Moodley
Scandium-glutamic acid phosphorescent materials (Sc/Glu-PMs) were synthesized via a simple one-pot hydrothermal process using Sc 3+ ions and glutamic acid ligands. Structural characterization confirmed that the obtained material is an amorphous organic-inorganic composite rather than a crystalline coordination polymer. Compared with pure glutamic acid, Sc/Glu-PMs exhibited significantly enhanced room-temperature phosphorescence (RTP), attributed to coordination-induced structural rigidity that suppresses non-radiative decay pathways and stabilizes triplet excitons. Post-synthetic protonation using dilute hydrochloric acid further improved the phosphorescence quantum yield (PQY) from 7.63% to 11.07%, although a moderate decrease in phosphorescence lifetime was observed, indicating enhanced radiative decay efficiency after protonation. Surface and spectroscopic analyses suggest that protonation modifies the hydrogen-bonding environment and local surface chemistry without disrupting the bulk structure. The prepared materials also demonstrated promising optical information encryption performance, including high contrast, persistent afterglow, and good photostability under repeated UV on/off cycles. This work provides a simple coordination-protonation strategy for regulating RTP behavior in amino acid-based organic-inorganic systems for potential anti-counterfeiting and optoelectronic applications.
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DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123576
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IF 7.5
Jun Luo,Junjie Ma,Yibo Xin,Hefan Zhang,Chongyang Yuan,Lili Chai,Xueying Wang,Changyu Lu
The resource utilization of waste had significant economic value and environmental benefits. Among them, constructing a light-driven advanced oxidation system using waste was an effective strategy for treating organic wastewater. This study constructed a lake sediment/g-C 3 N 4 heterojunction - Peroxymonosulfate (PMS) photocatalytic system. The photoelectrochemical experiments and in-situ XPS analysis demonstrated that the heterojunction formed by lake sediments and g-C 3 N 4 facilitated the separation and transfer of photogenerated carriers. The BET results indicate that the specific surface area of this heterojunction material reached 20.1595 m²/g. Furthermore, the joint activation of PMS by transition metals and heterojunctions effectively increased the concentration of reactive substances in the system. Under simulated natural light conditions, this system could degrade 92.17% of tetracycline (TC) within 30 min, and the mineralization rate could reach 71.99%, and the apparent quantum efficiency (AQE) is 0.77%. After five cycles, this system was still able to achieve a degradation rate of 78.828%. The degradation pathway of TC and the stability of its products were analyzed through LC-MS and DFT calculations. The Ecological Structure Activity Relationships (ECOSAR) simulation and plant cultivation experiments had confirmed that this system could effectively reduce the environmental risk of TC. This study focused on specific components in lake sediments and examines their roles during the photocatalytic process. This study employed more intuitive simulation or experimental methods to analyze the transfer pathways of photogenerated electrons, providing valuable insights for the subsequent development of sediment photocatalytic materials.
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DOI
高影响因子
危险品化学品经营许可证（带存储）