Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·123576
·
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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高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2026
·
IF 5.7
Shuai He,Hao Wang,Feng Qin,Hongjun Zhang,Guicheng Jiang,Bin Yang
The high d 33 = 418 pC/N, Q m = 1762 was obtained for PMS-PZT, providing remarkable FOM = d 33 * Q m which is improved by 57.5% without doping . • This anomalous result in PMS-PZT challenges the prevailing paradigm that chemical doping is mandatory for decoupling piezoelectricity and mechanical loss. • The T c = 331 °C and Δ d 33 < 5% (after annealing) shows the good high temperature stability, which is also beneficial to the high-power applications. In order to satisfy the demands of high-power applications, the desire to improve electromechanical properties of piezoelectric ceramics has become increasingly urgent. A conventional ternary ceramic system 0.05Pb(Mn 1/3 Sb 2/3 )O 3 -xPbZrO 3 -(0.95-x)PbTiO 3 (x = 0.45–0.49) (0.05PMS-xPZ-(0.95-x)PT) was studied through regulating the ratios of rhombohedral (R) and tetragonal (T) phases in this research. The phase compositions, microstructures, electromechanical properties and thermal stability of ceramics were characterized. The 0.05PMS-0.47PZ-0.48PT ceramics near the morphotropic phase boundary (MPB) reveals remarkable comprehensive properties ( d 33 = 418 pC/N, Q m = 1762, FOM = d 33 * Q m = 7.37 × 10 5 pC/N, T c = 331 °C, tan δ = 0.28% (at 25 °C), ε r = 1606, k p = 0.62). Compared with the undoped PMS-PZT research reported before, the FOM is improved by 57.5%. Additionally, it also exhibits excellent thermal stability that from 25 °C to 150 °C, the variation of d 33 is less than 5%. The outstanding comprehensive properties are primarily ascribed to the optimal ratio of the R and T phases which is 19/81 and the pinning effect of defect dipoles. The XPS and PFM result directly proved the presence of defect dipoles and exhibited the structures of domains. The strong “defect dipole-strain cooperative pinning” in T phase rich MPB yield high Q m when the d 33 is enhanced at the same time. The results of this research especially the high FOM, low tan δ and excellent thermal stability indicate that the 0.05PMS-0.47PZ-0.48PT ceramics could be a promising alternative for the productions of piezoelectric devices working in a large temperature range in high-power fields.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
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
·
催化
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高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Yingyi Li,Shangui Zhang,Yanan Qin,Congcong Yao,Qingda An,Zuoyi Xiao,Shangru Zhai
Strategy exploration for tailored conversing bio-wastes into valuable functional matrices with varied potentiality is a hotspot in the field of environmental remediation and green chemistry. As is known, the direct combustion of rice hulls has led to serious atmospheric pollution. Accordingly, how to controllably convert rice hulls into catalytic functional materials for water remediation is highly demanded yet remains a great improvement. Herein, low-cost and environmentally friendly surface-loaded cobalt/ hydrochar composites (Co-RHs) were successfully synthesized by hydrothermal carbonizing cobalt-impregnated rice hull waste. The Co-RH-130 exhibited prominent performance in efficiently activating peroxymonosulfate (PMS) to degrade carbamazepine (CBZ), which could remove 95.78% of CBZ within 60 min. Additionally, the Co-RH-130 in recyclability tests maintained high stability and recyclability from the synergy of cobalt oxides and hydrochar, and the inherent mechanically stable of the rice hulls. Based on quenching tests and EPR analysis, SO 4 •− and O 2 •− were proved as the predominant reactive species for the CBZ degradation and the reaction mechanism was elucidated. Most importantly, the degradation experiment of the fixed-bed column was used to simulate the degradation process under actual conditions to evaluate the efficiency and practical application value, which showed that the continuous degradation rate of 97.06% of CBZ could still be reached in the Co-RH-130/PMS system at 720 min. This work might provide a contributing solution for the controllable conversion of rice hull waste and practical treatment for continuous organic wastewater.
研究领域:
环境科学
·
绿色化学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Zhipeng Yuan,Jinxu Zhu,Jing Zhang,Xinfu Zhao,Sijia Liu,Shimo Yu,Xiaochan Liu,Kunmeng Zhu,Xibin Yi
In response to the dual challenges of global freshwater scarcity and organic pollutant control, this study innovatively developed a heterogeneous wettability composite sponge (HWCS) by integrating solar driven interfacial evaporation with peroxymonosulfate activation catalysis. The material features a heterogeneous wettability substrate formed by doping superhydrophobic SiO 2 aerogel particles into a superhydrophilic polyvinyl formal porous matrix. The SiO 2 aerogel particles reconstruct solution transport pathways by converting macroscale mass transfer channels into micro-nano multichannel networks, which can significantly suppress thermal conduction losses while ensuring the solution supply. After optimizing the aerogel particles doping amount (3 g per 30 g of 12 % PVA solution) and particle size (100 mesh), the evaporation efficiency of HWCS was enhanced from 1.088 kg·m −2 ·h −1 to 1.321 kg·m −2 ·h −1 , while the solar to vapor efficiency increased from 74.1 % to 90.2 % compared to homogeneous hydrophilic materials. Furthermore, the SDIE process synergistically enhanced PMS activation through localized temperature elevation and evaporation enrichment, achieving 91.6 % degradation of 100 ppm Congo Red within 90 min (apparent rate constant: 0.0289 min −1 ). HWCS also demonstrated robust mechanical strength, self-floating capability, and long-term stability, highlighting its potential for outdoor water treatment applications. This study offers a sustainable strategy to address both freshwater scarcity and organic pollution challenges.
研究领域:
环境科学
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材料工程
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水处理技术
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可再生能源利用
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催化
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纳米技术
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yuexinxi Wang,Shizong Wang,Yong Liu,Jianlong Wang
The peroxymonosulfate (PMS)-based advanced oxidation process is considered as an effective way to remove emerging organic pollutants in the wastewater. However, the heterogeneous catalysts used for PMS activation suffers from low catalytic stability and PMS utilization efficiency. Herein, sulfur-doped cobalt ferrite loaded graphitic carbon nitride (S-CoFe 2 O 4 /CN) was firstly synthesized for PMS activation toward the sulfamethoxazole (SMX) removal. The S-CoFe 2 O 4 /CN possessed excellent PMS catalytic activity and photocatalytic activity . The first-order kinetic constant (k) of SMX degradation in the presence of visible light reached 0.3564 min −1 with high PMS utilization efficiency (78.3 %). Mechanism analysis elucidated that compared to the original CoFe 2 O 4 , sulfur doping created more oxygen vacancies , while visible light further promoted the regeneration of Co(II), Fe(II) and oxygen vacancy, the formation of high-valent iron oxo as well as the reduction of S 2- oxidation. In addition, the visible light/S-CoFe 2 O 4 /CN/PMS system showed high resistance to inorganic ions , and superior catalytic stability. Both acute and chronic toxicity of treated SMX solution decreased. This study provides an effective system to remove emerging organic pollutants in the wastewater.
研究领域:
环境科学
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催化化学
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废水处理
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高影响因子
Catalysts
·
2025
·Vol. 15
·期 9
·850
·
IF 4
Qiongqiong He,Xuewen Wu,Ping Ma,Zhaoyang Song,Xiaoqi Wu,Ruize Gao,Zhenyong Miao
Phenol is a refractory organic pollutant that is difficult to degrade in wastewater treatment, and efficiently and stably degrading phenol presents a significant challenge. In this study, iron-doped humic acid-based nitrogen–carbon materials were prepared to activate peroxymonosulfate (PMS) for the degradation of phenol. The Fe-N-C/PMS system achieved a phenol degradation rate of 99.71%, which follows a first-order kinetic model, with the reaction rate constant of 0.1419 min−1. The phenol degradation rate remained above 92% in inorganic anions (Cl−, SO42−, HCO3−) and humic acid and the system maintained a 100% phenol removal rate over a wide pH range (3–9). The iron in the catalyst predominantly exists in the forms of Fe0and Fe3C, and Fe0, Fe2+/Fe3+are the main active sites that promote PMS activation during the reaction. Additionally, Fe-N-C has a large specific surface area (1041.36 m2/g). Quenching experiments and electron spin resonance (ESR) spectroscopy detected the active free radicals in the Fe-N-C/PMS system: SO4•−, •OH, O2•−, and1O2. The mechanism for phenol degradation was discussed, involving radical pathways (SO4•−, •OH, O2•−) and the non-radical pathway (1O2), in the Fe-N-C/PMS system activated by Fe0, Fe2+/Fe3+, sp2hybridized carbon, C-O/C-N, C=O, and graphitic nitrogen active sites. This study provides new insights into the synthesis of efficient carbon-based catalysts for phenol degradation and water remediation.
研究领域:
环境科学
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材料化学
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水体修复
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催化
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污染物降解
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Jiahui Zhou,Xuesong Li,Jia Yuan,Zhiwei Wang
Iron-mediated activation of peroxymonosulfate (PMS) has long been of a great interest for the effective oxidation of micropollutants. In this study, ferroferric oxide doped powdered activated charcoal (PAC) was prepared by a chemical co-precipitation method in which abundant ferroferric oxide nanocatalyst (FONC) were immobilized on the PAC. The catalyst (FONC@PAC) enabled an efficient degradation of tetracycline via activation of PMS over a wide range of pH and the removal efficiency could reach up to 86.9%. It was verified that the surface-bound SO 4 •− and 1 O 2 were the predominant reactive oxygen species in the catalytic process. A possible degradation pathway of TC was deduced and the toxicity of treated wastewater was drastically reduced after the catalytic degradation. Meanwhile, the catalyst demonstrated a decent degradation performance even after four recycles and suffered from little iron loss. The novel catalyst demonstrated its great potential for the removal of antibiotics in the wastewater.
研究领域:
环境科学
·
化学工程
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高影响因子
WATER AIR AND SOIL POLLUTION
·
2025
·Vol. 236
·期 14
·1-15
·
IF 3
Peng Junlin,Bai Dihao,Sun Lei,Yuan Xiangjuan
The perovskite CeCoO 3 composites were synthesized through the sol–gel method with two complexing agents (citric acid and EDTA) with different Ce/Co molar rations and further applied for peroxymonosulfate (PMS) activation. The physicochemical properties and morphology of CeCoO 3 were characterized using BET, XRD, FT-IR, SEM, TEM, and XPS techniques. When the CeCoO 3 prepared with EDTA as the complexing agent at 600°C and Ce/Co ratio of 1:1, the EDTA-CeCoO 3 exhibited superior physicochemical properties, including a high specific surface area (7.69 m 2 /g) and pore volume, abundant oxygen vacancies, and optimal exposure of active sites, which is most conducive to activating PMS. The effects of catalyst dosage, PMS dosage, initial pH, natural organic matter, and common anions on CeCoO 3 /PMS system for bisphenol A (BPA) degradation were systematically evaluated. The results revealed that CeCoO 3 prepared with EDTA at 600°C Demonstrated excellent catalytic activity for PMS Degradation of BPA, achieving over 97% Degradation efficiency of BPA within 15 min, with a pseudo-first-order reaction rate constant ( k ) of 0.2909 min⁻ 1 . Furthermore, CeCoO 3 showed outstanding stability in multiple cyclic experiments. Furthermore, radical quenching experiments confirmed that SO 4 •− , • OH, and O 2 •− were the dominant active radicals in the CeCoO 3 /PMS system for BPA degradation, and a plausible reaction mechanism was proposed. This study provides new insights into the development of PMS activating catalysts, specifically low-cobalt-content yet highly efficient cobalt-based catalysts.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zuyang Huang,Lianyang Huang,Shuohai Fang,Yunchuan Yang,Meidan Lai,Xin Zhong,Changzhong Liao,Zihao Wu,Jun Liu
Advanced oxidation processes (AOPs) based on photocatalysis and peroxymonosulfate (PMS) activation hold great promise for the remediation of organic wastewater. To overcome the limitation of narrow light utilization, sluggish PMS activation, and weak synergy between photocatalysis and PMS activation, the rational integration of transition-metal-mediated PMS activation with heterostructure engineering under light provides an efficient pathway for accelerating internal electric field construction and enhancing pollutant degradation. Herein, a C-LaFeO 3 anchored Co-doped g-C 3 N 4 (C-LFO/Co-CN) catalyst was synthesized via a multi-step in situ calcination strategy. When the mass ratio of C-LFO: Co: CN was optimized to 10:1:100, the C-LFO/Co-CN catalyst exhibited optimal photo-Fenton-like synergistic performance, achieving an initial 30-minute degradation rate 5.8 times higher than that under visible light alone. It was revealed that the Co sites directly interact with PMS to form high-valent cobalt (Co(IV) = O). Furthermore, the reconstruction of the internal electric field establishes a Z -scheme heterojunction. This configuration drives the directional migration of photogenerated electrons under illumination, promoting the direct involvement of photogenerated holes from the C-LFO valence band in the degradation of NOR. The influx of photogenerated electrons in Co-CN facilitates the reduction of Co valence states, while in C-LFO, the Fe sites further participate in the formation of a Co Fe valence state cycling system under the activation of PMS. These synergistic dual-metal redox cycles ultimately promote the highly efficient degradation of NOR in the (C-LFO/Co-CN)-PMS-Vis system. This study provides new mechanistic insights and theoretical guidance for efficient photocatalysis–PMS synergistic catalysts for wastewater treatment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Ruijie Xie,Jian Ji,Kaiheng Guo,Dongxue Lei,Qingjuan Fan,Dennis Y.C. Leung,Haibao Huang
In this study, wet scrubber coupled with UV/peroxymonosulfate (PMS) was used as a semi-batch process for removing gaseous VOCs. Both ethyl acetate and toluene could be removed efficiently using this coupled process due to the generation of SO 4 − and HO . The mass-transfer coefficients in this coupled process were larger than in wet scrubbing only process. The roles of SO 4 − and HO were investigated, in which SO 4 − acted as the predominant radical for toluene degradation while HO was major for ethyl acetate. This could be further confirmed by simultaneous degradation of ethyl and toluene. Moreover, the reaction solution reused at least four times still showed excellent performance for VOCs removal via re-adding PMS. A possible mechanism on toluene degradation was proposed based on the evolutions of intermediates during the process. This study clarified the roles of non-selective radical (i.e. HO ) and selective radical (i.e. SO 4 − and Cl ) in the removal of a continuous-flow gaseous VOCs by this coupled process.
研究领域:
环境科学
·
化学工程
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高影响因子
Water
·
2023
·Vol. 15
·期 10
·1920
·
IF 3.4
Yishu Cai,Fan Chen,Lingfang Yang,Lin Deng,Zhou Shi
Nanoplastics have gradually become a concern due to the wide use of plastics. Nanoplastics in aqueous phase can be exposed to users through water supply networks and cannot be efficiently removed by conventional water treatment processes. This work studied the degradation of polystyrene nanoplastics (PS-NP) by two commonly used advanced oxidation systems: UV/NaClO and UV/peroxymonosulfate (PMS). Results showed that almost no turbidity was detected in the PS-NP solution (5.00 mg/L) after treated by both UV/NaClO and UV/PMS for 360 min, suggesting the excellent turbidity removal ability. Yet, scanning electron microscope (SEM) and total organic carbon (TOC) removal tests demonstrated that PS-NP could not be completely degraded by UV/NaClO. The mineralization rate using UV/NaClO was only 7.00% even when the NaClO concentration increased to 5.00 mM, and many PS-NP particles could still be observed in SEM images. By contrast, the mineralization rate reached 63.90% in the UV/PMS system under the identical experimental conditions, and no spherical particles appeared in the SEM results. Density functional theory (DFT) calculations revealed that the different reaction sites and energy barriers of SO4•−and•Cl on PS-NP resulted in the differences in mineralization rates and degradation intermediates. The degradation pathway of PS-NP by UV/NaClO and UV/PMS was proposed accordingly. Additionally, the intermediates toxicity evaluation by a luminescent bacteria test showed that the inhibition rate in the UV/NaClO system (2.97%) was not markedly different from that in the control group without any treatment (1.98%); while that in UV/PMS system increased sharply to 98.19%. This work demonstrated that UV/PMS was more effective in PS-NP degradation than UV/NaClO, and the chemical risks of degradation intermediates were non-negligible.Keywords:nanoplastics;polystyrene degradation;mechanisms;DFT calculation;toxicity assessment
研究领域:
环境科学
·
化学工程
·
毒理学
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高影响因子
危险品化学品经营许可证（带存储）