ENVIRONMENTAL POLLUTION
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2025
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IF 7.3
Xinyue Zhao,Siyu Liu,Lina Wang,Li Yang,Jun He,Chengjun Wang
A gas chromatography-flame ionization detection method was developed to investigate the occurrence and transformations of phthalate esters (PAEs) in atmospheric aqueous aerosol in Wuhan City. Six of PAEs were detected in collected aerosol samples and their concentrations in atmosphere were followed the order of diallyl phthalate (0.244 μg m −3 ) > diethyl phthalate (0.235 μg m −3 ) > di(2-ethylhexyl) phthalate (0.176 μg m −3 ) > dimethyl phthalate (0.110 μg m −3 ) > di-n-octyl phthalate (0.081 μg m −3 ) > dipropyl phthalate (0.024 μg m −3 ). The Redundancy analysis results indicated that, compared to humidity and wind speed, temperature had the most important influence on the occurrence of PAEs in aqueous aerosol. The hydrolysis of selected PAEs in aqueous extracts of aerosol samples was examined under different conditions, determining that hydrolysis of PAEs is most susceptible to the ambient temperature at typical atmospheric aqueous pH of 3–5. In addition, photodegradation results suggested that indirect photodegradation played a key role in photodecomposition of PAEs under sunlight irradiation. The photo-generated reactive species including triplet water-soluble organic matter ( 3 WSOM∗) and reactive oxygen species (ROS) mainly contribute to the degradation of PAEs in atmospheric aqueous aerosol. This study provides an important reference for better understanding the occurrence and transformations of PAEs in ambient urban atmospheric aqueous aerosol.
研究领域:
环境科学
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化学
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PubMed
高影响因子
Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Sha Shi,Jihui Wang,Chunhong Xu,Jie Mao,Yaohui Bai
Carbamazepine (CBZ), a typical pharmaceutical and personal care product (PPCP), has an annual global consumption exceeding several thousand tons. Its molecular structure contains symmetrical nitrogen-containing aromatic heterocycles, which resist degradation by conventional biochemical methods, resulting in persistent aquatic pollution. Integrating photocatalytic processes with Fenton reaction provides a targeted approach for its effective elimination from aquatic systems. However, traditional photo-Fenton systems suffer from inefficient Fe 3+ /Fe 2+ redox cycling due to sluggish Fe³⁺ regeneration and rapid recombination of photogenerated charge carriers. To address these challenges, this study designed a facet-engineered BiVO 4 photocatalyst through selective deposition of FeOx nanoparticles on the electron-rich (010) facets of monoclinic BiVO 4 via hydrothermal and photodeposition methods. The optimized FeOx/BiVO 4 composite exhibited exceptional degradation performance for CBZ, achieving a rate constant of 0.317 min -1 , which is 24-fold higher than that of pristine BiVO 4 . Mechanistic investigations revealed that the selective FeOx deposition not only promoted the valence-state transition of Fe 3+ to Fe 2+ but also enhanced charge carrier separation, thereby establishing a sustainable Fe 3+ /Fe 2+ redox cycle. Electron paramagnetic resonance (EPR) analysis and radical quenching experiments further identified hydroxyl radicals (·OH) as the dominant reactive species. This work provides a paradigm for designing efficient photo-Fenton reaction systems through targeted facet engineering, offering broad implications for the remediation of PPCPs.
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
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2025
·Vol. 17
·期 11
·1558
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IF 3
Chengchen Jiang,Zehong Zeng,Liwen Jiang,Zhi Dang,Xiaohua Shu
Acesulfame potassium (ACE) is an emerging pollutant with the potential to induce a range of health hazards. In this study, waste natural pyrite (with some oxides on its surface) was washed and used as an activator to activate potassium peroxomonosulfate (PMS) to degrade ACE in water. The experimental results demonstrate that waste natural pyrite with an oxidized layer exhibited a significant degradation effect on ACE. Under conditions of 0.7 g/L pyrite and 60 μM PMS, a degradation rate of 99.3% for ACE was achieved within 15 min, and the mineralization rate reached 15.3% within 30 min. In addition, concerning its applicability, waste natural pyrite demonstrates strong activation ability within a pH range of 3 to 7. It is important to note that while HCO3−and Ca2+can influence the effectiveness, other common anions and cations do not significantly affect the degradation process. Mechanistic studies reveal that the primary active species in the waste natural pyrite/PMS system were sulfate radicals (SO4•−) as well as hydroxyl radicals (•OH), which contributed 50.6% and 36.9%, respectively. In addition, the analysis of ACE degradation products indicates that no highly toxic intermediates were generated during the degradation process. Overall, this study underscores the outstanding performance of waste natural pyrite as an activator, providing a safe, efficient, and cost-effective approach for degrading organic pollutants like ACE.
研究领域:
环境科学
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化学工程
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2025
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IF 11.3
Danmei Luo,Heng Zhang,Xingxing An,Jia Zhao,Can Feng,Jialong Yin,Mengfan Luo,Tao Wei,Yang Liu,Yanbiao Shi,Jing Zhang,Bo Lai
Extensive research has explored strategies to enhance permanganate (PM) oxidation capacity, with carbon materials having shown significant promise in treating refractory organic pollutants in water. However, the impacts of carbon quantum dots (CQDs) and heteroatom-doped CQDs on PM oxidation remain unclear, warranting further investigation. In this study, we found that sulfur-doped CQDs (SCQDs) significantly outperformed CQDs, nitrogen-doped CQDs (NCQDs), and boron-doped CQDs (BCQDs) in promoting the oxidation reaction of diclofenac sodium (DCF) by PM. Through quenching experiments, light-shielding tests, and UV-Vis spectroscopy, we revealed that the PM/SCQDs system could rapidly and stably generate Mn(III) and MnO 2 , thereby facilitating the removal of DCF. Characterization analysis showed that SCQDs possess a surface enriched with diverse functional groups, and sulfur doping further enhances their electron cloud density. This structural characteristic enhances the ability of SCQDs to donate electrons to permanganate, thereby promoting its reduction to Mn(III) and MnO 2 . A comprehensive evaluation of key operational parameters governing the PM/SCQDs system performance was conducted. Additionally, the PM/SCQDs system exhibited substantial resistance to interference from common matrix ions and natural organic matter in water. The study provides a new perspective on enhancing permanganate oxidation by SCQDs and offers a promising pathway for efficient water pollutant degradation.
研究领域:
环境科学
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材料科学
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PubMed
高影响因子
JOURNAL OF FOOD COMPOSITION AND ANALYSIS
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2025
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IF 4.6
Xueyi Ren,Honglei Tian,Jianke Li,Yuhuan Zhang
Colorimetric detection methods are prosperous in the monitoring of contaminants in food and environmental matrices. However, the traditional single-channel color changes seriously restrict the enhancement of their sensitivity and facile applications. Herein, a Fe 3+ concentration-controlled dual-channel ratiometric colorimetric sensing platform for the sensitive detection of Pb 2+ was established. Generally, the low concentrations of Fe 3+ can trigger a typical absorption peak at 652 nm of the oxidized TMB (oxTMB). While high concentrations of Fe 3+ induce colorless-to-orange change due to the generation of biphenyl quinone with strong absorption peaks at 450 nm. Interestingly, the presence of Pb 2+ could convert Fe 3+ to Fe (3+x)+ by a displacement reaction, causing a blue-to-colorless change at low Fe 3+ concentrations or an orange-to-blue color change at high Fe 3+ concentrations. The latter dual-channel color variances corresponded to a more distinguished visual quantification of Pb 2+ compared to the former one-channel changes. As such, the Pb 2+ was detected over a range of 0.625-25 µM, with a low detection limit (LOD) of 70 nM. Additionally, by integrating smartphone optical equipment and color recognition software, an intelligent platform for the instant detection of Pb 2+ was established, with a LOD of 0.30 µM. In real samples detection, the developed smartphone sensing platform demonstrated excellent recovery rates (89.0±4.6% to 111.1±7.4%), comparable to the conventional UV-Vis spectroscopy. This work sheds light on fabrication dual-channel colorimetric detection methods for enhanced sensing performance and provides a rapid, sensitive, and intelligent platform for detecting small molecular hazards in the environment.
研究领域:
分析化学
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环境科学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yingjian Yu,Xiaolong Chen,Dan Zheng,Yulong Li,Zhuqi Chen,Rong Chen,Lie Yang
In this study, a novel iron-zinc bimetal-loaded sludge biochar-based biochar (Fe-Zn@SBC) was prepared for efficient removal of sulfamethoxazole (SMX) from aquatic environments through the activation of periodate (Pl). The addition of bimetals resulted in a unique honeycomb-like microstructure within the biochar, significantly affecting its pore distribution, functional group intensity, and defect characteristics. The Fe-Zn@SBC catalyst demonstrated exceptional performance in activating PI across a wide range of pH conditions and exhibited robustness against interference from prevalent contaminants in water bodies. Quenching experiments, electron paramagnetic resonance (EPR) analysis, and electrochemical assessments indicated that the degradation of SMX primarily occurs through a radical pathway driven by superoxide radicals, alongside a non-radical pathway facilitated by electron transfer. The synergistic interaction between Fe-Zn@SBC and PI enhanced the degradation of SMX into various small molecular intermediates, thereby contributing to the safety of aquatic ecosystems. This research presents an innovative modification strategy for sludge biochar, providing an effective and environmentally sustainable approach to mitigating pollution from pharmaceutical active compounds (PhACs) in aquatic systems.
研究领域:
环境科学
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污染控制
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催化材料
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Shuai Yang,Lin Zhang,Yibing Sun,Zhichao Yang,Hongchao Li
The cleavage of the C-P bonds is essential for the removal and recovery of phosphorus from phosphonate-contaminated wastewaters. This study investigates the feasibility of utilizing carbon nanotubes (CNTs) to activate peroxides (e.g., peroxymonosulfate (PMS)) for degradation of phosphonates. With the exception of aminomethylphosphonic acid and 2-phosphonobutane-1,2,4-tricarboxylic acid, the investigated phosphonates are effectively degraded to orthophosphate ( ortho -P), achieving conversion efficiencies ranging from 48.5% to 78.1% at a molar ratio of PMS to C-P bonds of 4:1. Taking aminotris(methylenephosphonic acid) (ATMP) as a model substrate, we deduce that the surface-activated PMS (CNTs-PMS*) serves as the primary reactive species, leading to C-P bonds cleavage predominantly through effective collision rather than the electron transfer process. Furthermore, the CNTs/PMS system maintains high performance over a wide pH range from 3.0 to 9.0 and in the presence of diverse inorganic ions, though its activity is reduced by natural organic matters. The practicality of the CNTs/PMS system in real water environments is also verified. The insights gained from this study are expected to significantly advance wastewater decontamination from phosphonates and enhance our cognition regarding the nonradical mechanism of peroxide activation by carbon-based materials.
研究领域:
环境科学
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化学工程
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Dongshun Sai,Xiaoxiang Cheng,Peijie Li,Xinsheng Luo,Jin Wang,Haiqing Chang,Daoji Wu,Heng Liang
Substantial amounts of hazardous shale gas produced water (SGPW) were generated with the development of hydraulic fracturing and horizontal drilling technologies. While membrane technique has gained popularity for SGPW treatment, membrane fouling remains a significant obstacle. Herein, a novel pretreatment process of ferrate (Fe(VI)) oxidation enhanced by ferrous iron (Fe(II)) was suggested to mitigate ultrafiltration membrane fouling in the treatment of SGPW. Results indicated that Fe(II)/Fe(VI) (100/30 μM) pretreatment increased the terminal normalized flux from 0.18 to 0.47, while reducing the irreversible and reversible fouling resistances by 71.1 % and 83.6 %, respectively. Interfacial free energy assessment revealed that Fe(II)/Fe(VI) pretreatment significantly enhanced the repulsive forces between pollutants and the membrane. Furthermore, the water quality of SGPW was generally improved by Fe(II)/Fe(VI) treatment, in comparison with single Fe(VI) oxidation. The synergistic effect of Fe(II) and Fe(VI) facilitated pollutants aggregation and enhanced the conversion of organic contaminants. In general, the generated high-valent iron intermediates (Fe(IV)/Fe(V)) were key contributors to the synergistic process and prolonged the oxidation duration. Simultaneously, the formation of Fe(III) promoted the flocculation performance. This novel approach presents promise for effective SGPW treatment and membrane fouling mitigation.
研究领域:
环境科学
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水处理工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Tianyi Zhang,Jing Lu,Xue Li,Zhitao Zou,Mengdan Kong,Jixiang Xu,Vladimir Turkevich,Haifeng Lin,Yanyan Li,Lei Wang
Optimizing the Z-scheme charge transmission of lateral heterojunction constructed by single-layer (SL) nanosheets is an appealing yet challenging tactics to boost photocatalytic efficiency for solar fuel production and environmental remediation. Herein, we reported the edge/corner-specific growth of SL ZnIn 2 S 4 -MoSe 2 lateral heterojunction with intensified Z-scheme charge transmission through intimate Mo-S connection and S vacancies (V S ) engineering. The Mo-S chemical bonds inside ZnIn 2 S 4 -MoSe 2 heterojunction offer a speedy channel for Z-scheme charge transmission as confirmed via surface photovoltage spectroscopy, radical production, and in situ photo-irradiated X-ray photoelectron spectroscopy tests as well as density functional theory calculation, while V S engineering enlarges Fermi level difference between ZnIn 2 S 4 and MoSe 2 to strengthen internal electric field and driving force for photo-carriers transmission, resulting in an excellent photocatalytic H 2 evolution (PHE) capability. Isotopic labeling experiment verified the photocatalytic water reduction by ZnIn 2 S 4 -MoSe 2 heterojunction, which exhibited a visible-light-driven PHE rate up to 55.70 mmol g −1 h −1 (or 550.70 μmol/10 mg/h) with an apparent quantum yield reaching 38.9 % at 400 nm. Moreover, the ZnIn 2 S 4 -MoSe 2 heterojunction also possessed a robust stability during long-term photocatalytic reaction. The research findings could inspire new idea to enhance the photocatalytic capability of two-dimensional (2D) heterojunction by strengthening Z-scheme charge transmission at atomic level.
研究领域:
材料科学
·
能源化学
·
表面物理化学
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DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Ya Zeng,Lingfeng Qin,Sijie Tian,Caicheng Long,Taiping Qing,Peng Zhang,Bo Feng
Cobalt-based multiphase catalysts can effectively activate peroxymonosulfate (PMS) and degrade organic pollutants. However, their practical application faces critical challenges, including insufficient exposure of active sites, slow reaction kinetics, and cobalt ion leaching, which collectively reduce catalytic efficiency and sustainability. Although there have been attempts to improve the catalytic efficiency through structural modifications such as core-shell structure or porous design, these strategies are still difficult to optimize the active site exposure and cobalt ion stability simultaneously. To overcome these limitations, here we propose a novel triple-shell yolk@shell architecture (3YS-Co@NC) constructed via a stepwise strategy involving crystal extension growth, selective etching, and calcination. The optimized nanoreactor degraded 100 % of bisphenol S (BPS) within 12 min with a rate constant (0.342 min −1 ) 9.5-, 2.34-, and 1.49-fold higher than solid nanoparticles (Co@NC), single-shell (1YS-Co@NC), and double-shell (2YS-Co@NC) counterparts, respectively. Notably, the TOC removal rate of 3YS-Co@NC reached 71 %, surpassing those of 1YS-Co@NC (53 %), 2YS-Co@NC (65 %), and Co@NC (21 %). The enhanced performance results from (i) the yolk@shell structure providing nanoreaction cavities and abundant active sites, and (ii) the robust Co 0 /Co 2+ /Co 3+ redox cycling. Quenching experiments and EPR analysis revealed that SO 4 •- and •OH dominated PMS activation, while O 2 •- played an auxiliary role. In contrast, 1 O 2 exhibited negligible contribution. LC/MS analysis identified key degradation intermediates, and the ECOSAR model predicted reduced biotoxicity of these products. This study not only promotes the development of advanced oxidation processes, but also provides a new insight into the design of cobalt-based catalysts.
研究领域:
环境科学
·
材料科学
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高影响因子
Journal of the American Chemical Society
·
2025
·
IF 15.6
Jun Mao,Huan Liu,Yanan Li,Meng Gao,Yunlong Zhang,Yao Song,Mo Zhang,Guilan Xu,Wu Zhou,Liang Yu,Xiaoju Cui,Dehui Deng
The oriented conversion of CH4 to CH3COOH at low temperature, even room temperature, is both scientifically significant and industrially applicable for CH4 utilization, yet it is extremely challenging due to the difficulties associated with efficient CH4 activation and controllable C–C coupling. In this study, we for the first time achieve the room-temperature conversion of CH4 to CH3COOH using molecular O2 and CO over MoS2-confined Rh–Fe sites, which delivers an unprecedented CH3COOH selectivity of 90.3% and a productivity of 26.2 μmol gcat.–1 h–1 at 25 °C. Furthermore, the productivity of CH3COOH can be enhanced to 105.6 μmol gcat.–1 h–1 at 80 °C, while maintaining a high selectivity of 95.6%. Comprehensive experimental and theoretical investigation reveal the critical role of Rh–Fe synergy in the selective formation of CH3COOH. The confined Fe sites in MoS2 enable the activation of O2 to generate highly reactive Fe═O center for CH4 dissociation to CH3 species at room temperature, which then readily couple with adsorbed CO on adjacent Rh sites to form the key CH3CO intermediate for CH3COOH production. The unique structure of Rh–Fe sites offers synergistic catalytic properties that effectively balance C–H activation and C–C coupling, successfully addressing the trade-off between activity and selectivity in the carbonylation of CH4 to CH3COOH under mild conditions.
研究领域:
化学
·
催化反应
·
材料科学
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Xueran Shi,Yingbo Cao,Lin Cong,Tiance Gu,Jing Wang,Qian Han
Due to serious harm of the tetracycline (TC) residue to human health, here a multifunctional nanoceria in situ-derived porphyrin heterogeneous framework (CeO 2 -POF) was innovatively applied to electrochemiluminescence (ECL) and colorimetric dual-mode sensing platform for TC detection. Concretely, the CeO 2 -POF fully interprets a “kill three birds with one stone” strategy. Firstly, CeO 2 -POF integrated ECL luminophore (“bird” one) and co-reaction accelerator (“bird” two), obtaining a 1.6-fold stronger ECL emission than that of tetrakis (4-carboxyphenyl) porphyrin (TCPP) ligand. Secondly, compared with two self-separated signal probes, the single CeO 2 -POF heterostructure exhibits enhanced ECL and peroxidase-like properties (“bird” three). CeO 2 -POF showed high catalyst activity toward H 2 O 2 and TMB, with color changes monitored via smartphone. Under optimized conditions, the dual-mode sensor for TC achieved a satisfied ECL detection limit of 0.57 pM and colorimetric detection limit of 0.52 nM. Compared with the commercial ELISA kit, the dual-mode sensing strategy exhibited satisfactory recovery in foods.
研究领域:
分析化学
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食品安全
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生物传感
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DOI
PubMed
高影响因子
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