INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
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2026
·Vol. 27
·期 2
·705
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IF 4.9
Di Chen,Aoyun Meng,Zhen Li,Jinfeng Zhang
Designing and constructing heterojunctions has emerged as a pivotal strategy for improving the photocatalytic efficiency of semiconductors. In this study, we report the controlled synthesis of an Au/Zn3In2S6Schottky junction through a combination of hydrothermal and in situ photodeposition methods. The structural, morphological, and photoelectrochemical properties of the catalyst were meticulously characterized using a suite of techniques including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), photoelectrochemical (PEC) measurements, and electron spin resonance (ESR) spectroscopy. The optimized 3% Au/Zn3In2S6composite exhibited a remarkable enhancement in both photocatalytic activity and stability, achieving a 90.4% removal of bisphenol A (BPA) under UV–visible light irradiation within 100 min. The corresponding first-order reaction rate constant was approximately 1.366 h−1, nearly 4.37 times greater than that of the pristine Zn3In2S6. This substantial improvement can be attributed to several key factors, including increased BPA adsorption, enhanced light absorption, and the efficient charge separation facilitated by the Au/Zn3In2S6heterojunction. Photogenerated holes, superoxide radicals, and hydroxyl radicals were identified as the primary reactive species responsible for the BPA degradation. This work highlights the potential of metal-modified semiconductors for advanced photocatalytic applications, offering insights into the design of highly efficient materials for environmental remediation.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 21.1
Yuqing Feng,Hongxia Liu,Yongxing Shang,Yingsen Fang,Shumei Gao,Ping Sun,Bitao Xiong,Hui Wang,Hui Liu,Mingbao Feng
Single-atom catalysts (SACs) are an effective strategy for maximizing the efficiency and reducing the costs of advanced oxidation processes (AOPs). Herein, a novel SAC with Fe−N 3 C sites was synthesized for emerging periodate (PI)-based AOPs. The optimized catalyst demonstrates superior performance, achieving 100 % removal of diclofenac (DCF) within 20 min via predominant singlet oxygen ( 1 O 2 ). Compared to the Fe−N 4 configuration, the Fe−N 3 C site enables an unprecedented 152.9-fold increase in the pollutant degradation rate, surpassing most reported catalysts. Density functional theory (DFT) calculations reveal that the Fe−N 3 C sites reduce the oxophilicity of the Fe centers, thereby lowering the energy barrier for 1 O 2 desorption and promoting its preferential generation. The DCF degradation pathway was further elucidated by Fukui constants. Furthermore, the Fe−N 3 C/PI system exhibits excellent stability with negligible leaching of Fe ions and strong resistance to common wastewater components. This work provides new insights into the design of efficient SACs and the construction of PI-based AOPs for water decontamination.
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Journal of Environmental Sciences
·
2026
·
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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INORGANIC CHEMISTRY COMMUNICATIONS
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2026
·
IF 5.4
Qinzheng Wei,Sze-Mun Lam,Jin-Chung Sin,Huanming Liu,Jinpeng Su,Kun Dong,Haixiang Li
Multifunctional catalyst surfaces for organic photodegradation and antibacterial applications are generally in high requirements, but they are facing towering challenges in light harnessing capability and charge transfer. In this work, a plate-like Bi 2 MoO 6 loaded onto prism-like ZnO (BZ) composite was devised via a two-step precipitation-solvothermal technique to surmount above lapses. Comprehensive material characterization using XRD, FESEM, TEM, XPS, FTIR, UV–vis DRS, PL and photoelectrochemical measurements witnessed successful material compounding and crucial structural as well as distinct electrochemical traits. When fed with enrofloxacin (ENR) as a targeted aquaculture pollutant, the BZ composite exhibited high photodegradation activity (98.2%) under solar light, which was 1.4 and 2.6 times those of individual Bi 2 MoO 6 and ZnO after 180 min solar irradiation, respectively. Moreover, the BZ composite efficiently realized photocatalytic inactivation of Escherichia coli and Staphylococcus aureus under solar light irradiation. The bacterial colony completely inactivated after introducing the binary composite within 180 min. The remarkable enhancement was due to both incorporation of abundant site Bi 2 MoO 6 and the formation of BZ Z -scheme system which better improved light capturing behaviour and afforded the effective charge segregation for the incremented reactive oxygen species yield (e.g. superoxide anion radical and photogenerated hole). Additionally, LC-MS and T.E.S.T outcomes further validated the efficient ENR photodegradation and a substantial reduction in the toxicity of intermediate products. The relatively convenient repeatability trait and eminent photoactivity performance of BZ were favorable for actual wastewater treatment and bacterial disinfection applications.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Xiaoxuan Xue,Buwen Jiang,Zhuoya Li,Yufu Jiang,Kewei Zhang,Zhijian Ji,Guojun Song,Chao Yang
The efficient degradation of organic pollutants remains a significant challenge in the field of catalysis, and the recycling of granular catalysts remains a persistent challenge during repeated usage. Herein, a ZnO@PVDF(Polyvinylidene Fluoride)-Nanopillar membrane has been prepared by combing the template and hydrothermal method and was applied in degrading methyl orange(MO) dye. The catalytic degradation rate attained 98.05 % at 360 min under the condition of ultrasonication and ultraviolet light being attributed to the composition and the bionic pine branch structure under a synergistic mechano(contactelectric & piezoelectric)-photocatalytic tri-catalysis. The PVDF-Nanopillar substrate as a dielectric material served as the reservoir of electron hole pair and prolonged their recombination by engineering a PVDF/ZnO nanorod heterojunction. Furthermore, the robust and reusability of this composite membrane were detected and the results indicated the membrane could also catalyze the degradation of dexamethasone, and its morphology and composition changed little comparing that in the recycling experiment after with before. Remarkably, the designed ZnO@PVDF-nanopillar membrane achieves ≈ 100 % organic pollutant degradation efficiency and enables facile catalyst recovery, offering a practical solution for sustainable water treatment applications, improving the catalytic convenience. This work provides new design principles for constructing organic-inorganic heterojunctions in environmental catalysis, offering fresh insights into hybrid material engineering.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Bicai Li,Yaxi Xiao,Yingjie Tan,Hongrui Zhao,Yi Huang,Guowen He
Landfill leachate, a complex refractory wastewater rich in high-concentration dissolved organic matter (DOM), resists conventional biochemical treatment and threatens aquatic ecosystems and human health. Developing efficient, stable DOM remediation technologies remains urgent. Herein, four ZnO photocatalysts with distinct morphologies (rod-like ZnO-1, flower-like ZnO-2, needle-like ZnO-3, rod-like arrayed ZnO-4) were synthesised via magnetron sputtering pretreatment combined with hydrothermal reaction. Characterisations showed ZnO-1 had a high oxygen vacancy density (62.05 %) and efficient photogenerated electron-hole separation. After 90 min of photocatalysis, ZnO-1 achieved the highest TOC (36.84 %) and DOM (63.16 %) degradation efficiencies, outperforming other samples. All catalysts preferred fulvic-like substance degradation over protein-like ones. Hydroxyl radicals (·OH) were the primary active species, synergising with superoxide radicals (·O 2 – ) and photogenerated holes ( h + ) to degrade DOM via C=C cleavage, aromatic ring opening and mineralisation. ZnO-1 retained >30 % activity after four cycles. This work provides a high-performance catalyst for refractory DOM remediation and guides morphology-controlled semiconductor catalyst design for complex wastewater treatment.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Siqi Hong,Baoxi Fan,Zheng Wu,Xiaoyue Cheng,He Gao,Yanmin Jia,Cheng Liu,Luohong Zhang
Piezoelectric catalysis has emerged as a sustainable technology for pollutant degradation, with barium titanate (BTO) serving as a prominent lead-free piezoelectric material. However, its practical application remains constrained by limited degradation efficiency. To address these challenges, polyaniline-incorporated BTO nanocomposites (BTO@PANI) were synthesized via in-situ polymerization to enhance piezoelectric polarization and catalytic performance. The composites were evaluated for degrading dyes and pharmaceuticals under both ultrasonic and aeration-driven conditions, with systematic investigation of influencing factors including pH, catalyst dosage, aeration rate, and bubble size. The optimized BTO@PANI 0.2 composite exhibited exceptional catalytic activity, achieving a 57 % enhancement in degradation efficiency and a reaction rate constant (k = 0.0218 min⁻¹) 15.7 times greater than pure BTO under ultrasonic excitation. The aeration-driven process used only 23.3 % of the energy that ultrasonication did, which is very impressive. The composite maintained excellent stability through four consecutive degradation cycles under both excitation modes. The catalytic mechanism was systematically investigated through radical trapping experiments, electron paramagnetic resonance (EPR) analysis, and comprehensive material characterization (XRD, SEM, FTIR, XPS, EIS). This work provides new idea for designing efficient piezoelectric catalysts and demonstrates a promising energy-saving strategy for advanced oxidation processes in water treatment.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
·
IF 21.1
Meng Li,Liyao Zeng,Peitong Cen,Ziyin Xia,Jiaqian Zhang,Lei Huang,Jia Yan,Shaoqi Zhou,Ce-Hui Mo,Xiangkang Zeng,Hongguo Zhang
This work introduces an innovative stacked iron mesh electrode configuration to achieve accelerated degradation of perfluorooctanoic acid (PFOA) by synergistically coupling electrochemical oxidation with peroxymonosulfate (PMS) activation. The system was systematically evaluated through electrochemical measurements, free radical quenching, and electron paramagnetic resonance spectroscopy, complemented by density functional theory calculations. The optimized triple-layer Fe electrode demonstrated outstanding performance, attaining nearly complete PFOA removal (100 %) within 12 min and a high kinetic rate constant of 0.218 min –1 . DFT analysis revealed that the Fe mesh possessed the strongest PMS adsorption energy (–2.68 eV) and the shortest Fe–O bond length (2.24 Å), confirming its superior activation capability. Mechanistic studies confirm the effectiveness of the electron transfer coupled with the hydroxyl radicals in defluorination and decarbonization during PFOA degradation. In addition, the system exhibited high cycle stability and strong tolerance to various background ion under continuous operations in the amplification experiment. The system also exhibited superior performance and low leaching of metal ions in treating various organic pollutants of practical wastewater (fluoride wastewater and landfill leachate). These findings present an effective and practical strategy for the remediation of persistent per- and polyfluoroalkyl substances in contaminated water sources.
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CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 4.3
Huixia Guo,Mengci Sun,Sijia Zhang,Shuo Yang,Jinru Li,Xiaoxiao Yuan
Oxygen vacancy-rich Bi 12 O 17 Cl 12 /BiOBr S-scheme heterojunction was successfully constructed through a solvothermal and ethylene glycol-assisted coprecipitation method. Benefited the construction of S-scheme heterojunction structure and the introduction of oxygen vacancy, the separation efficiency of photo-induced carriers is promoted. Under the optimized conditions (catalyst dosage 0.2 g/L, CIP concentration 10 mg/L), the degradation efficiency of CIP achieved 92.64% within 60 min. The corresponding reaction rate constant is 0.03814 min −1 , which is 3.57, 2.82 times than single BiOBr (0.01068 min −1 ) and Bi 12 O 17 Cl 12 -Ov (0.01354 min −1 ). Moreover, h + and O 2 − are the main active species for the degradation of CIP based on active species trapping experiment and EPR spectrum. The degradation pathways were proposed by Density Functional Theory (DFT) calculation and LC-MS analysis. Combining the T.E.S.T. soft stimulate and bean sprout growth experiment proved that the degraded solution has no obvious toxicity. More importantly, Bi 12 O 17 Cl 12 /BiOBr-1 also has a satisfied degradation efficiency for other pollutions. This work provides a feasible strategy to design oxygen vacancy-rich S-scheme heterojunction photocatalysts for wastewater treatment.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Kehui Xue,Lianqing Yu
Strong Metal-Support Interactions (SMSI) are recognized as a crucial aspect of tuning catalytic activity. Here we report the remarkable effectiveness of SMSI between Mn:BiVO 4 supports and semi-embedded Pt nanoparticles (NPs) (Pt/Mn:BiVO 4 -SMSI) in enhancing photoelectrochemical (PEC) water splitting. The incorporation of Mn greatly reduces the polaron jumping barriers and passivates the surface trap states. Due to the SMSI, electrons are transferred from the V 4+ to the Pt NPs, resulting in the construction of electron-rich Pt species (Pt δ– ) and semi-embedded interfaces (Pt δ– –O V –VO x ), which contributes to the extraction of photoinduced holes and shorten the charge transport distances. Benefiting from the SMSI effect, the as-obtained Pt/Mn:BiVO 4 -SMSI composite photoelectrode shows an excellent photocurrent density of 4.47 mA‧cm −2 at 1.23 versus the reversible hydrogen electrode in conventional electrolytes. Importantly, for PEC seawater splitting, VO x Lewis acid protective layer can tune the surface micro-catalytic environment. It enables the capture of OH − ions and resists surface Cl − to inhibit the chlorine attack on the photoelectrode. Such an in-situ generated microenvironment avoids the formation of precipitates. As a result, the Pt/Mn:BiVO 4 -SMSI exhibits an superior stability in both simulated seawater and natural seawater, respectively. This work sheds new light on the design of efficient photoanodes for PEC seawater splitting.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2026
·
IF 7.9
Fangchong Han,Bin Zhang,Jie Liu,Lijun Niu,Jun Ke
In this work, a carbon and cobalt co-doped carbon nitride (Co 0.04 -CCN 0.25 ) catalyst was synthesized for superior generation of singlet oxygen ( 1 O 2 ) via peroxymonosulfate (PMS) activation. The findings indicate that carbon self-doping not only reduces the interfacial charge transfer resistance but also constructs efficient electron transfer channels between g-C 3 N 4 support and cobalt active sites. This directional electron transfer increases the electron density of cobalt species, which can accelerate the Co(II)/Co(III) redox cycle. As a result, the optimized Co 0.04 -CCN 0.25 catalyst achieves 100% of bisphenol A (BPA) degradation within 6 min under ambient conditions. Mechanistic investigations reveal that the singlet oxygen is the dominant reactive oxygen species (ROS) at the Co active site in the Co 0.04 -CCN 0.25 , which presents a desirable and recyclable redox pair of Co(II)/Co(III). Furthermore, the modified catalyst exhibits excellent pH tolerance over a broad range and strong anti-interference ability against co-existing anions and humic acid in aqueous solutions. Liquid chromatography-mass spectrometry (LC-MS) analysis and ecotoxicity assessment further demonstrate that the toxicities of BPA degradation intermediates are significantly reduced during the oxidation process. Therefore, this study provides a promising and practical strategy for designing high-efficient C 3 N 4 -based catalyst of PMS activation. Download: Download high-res image (175KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhimo Fang,Zhou Zhou,Xiaomeng Li,Dongyang Li,Bin Hu,Haoyu Wang,Lin Zhang,Qin Dai,Kai Li,Yao Kong,Shiguan Yang,Qiang Lu
Superexchange-mediated dual-acceptor sites enable spatial charge separation. • Synergistic single-atom and vacancy engineering creates multifunctional sites. • Cu SA -TO-O V delivered excellent corresponding turnover frequencies of 177.52 h −1 . • The photo-Fenton system exhibited wide pH adaptability and anti-interference. Synchronously and efficiently utilizing photogenerated electrons and holes remains a significant challenge in Fenton-like reaction. Herein, the Cu single-atom (Cu SA ) and oxygen vacancy (O V ) co-modified TiO 2 nanoflake-like catalyst is successfully synthesized. O V modulate the electronic coupling interaction, which is proposed to trigger superexchange -mediated electron transfer from Cu 3 d x 2 − y 2 to Ti 3 d xy via O 2 p y orbitals. Specifically, Cu SA serves as the hole-accepting site for 1 O 2 generation, while O V and Ti 3+ functions as the electron-accepting site for •OH production and contaminant adsorption. The substrate enrichment effect and the free radical/non-radical coupling interaction significantly enhances photo-Fenton catalytic performance, achieving superior sulfanilamide removal efficiency across a broad pH range (3–11) and a high turnover frequency of of 177.52 h −1 . This work not only highlights the potential of active site engineering in designing photo-Fenton catalysts but also advances the development of efficient and sustainable water purification solutions.
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