CHINESE JOURNAL OF CATALYSIS
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2025
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IF 17.7
Yating Ai,Sónia A.C. Carabineiro,Xianqiang Xiong,Huayue Zhu,Qi Wang,Bo Weng,Min-Quan Yang
Emerging contaminants in water sources present serious environmental and health risks, creating an urgent need for efficient and reliable treatment strategies. Photocatalytic advanced oxidation processes (AOPs) provide rapid reaction rates and strong oxidation capabilities, however, comprehensive evaluations of wastewater treatment, including degradation pathways, toxicity assessments and mechanistic insights, remain underexplored in the literature. This study presents novel S-scheme Mn 0.5 Cd 0.5 S/In 2 S 3 (MCS/IS) photocatalysts for efficient degradation of antibiotic pollutants, with a particular focus on tetracycline hydrochloride (TCH). The optimized MCS/IS photocatalyst demonstrates exceptional degradation efficiency and robust resistance to inorganic anions. Additionally, a continuous-flow wastewater treatment system, using an MCS/IS membrane, demonstrates outstanding stability in TCH photodegradation. Utilizing response surface methodology and Fukui function analysis, the effects of various parameters on photocatalytic degradation rates, along with the associated pathways and intermediate products, have been thoroughly investigated. Toxicity assessments confirm the environmental safety of the treated effluents. Mechanistic studies show that the S-scheme heterojunction in the MCS/IS photocatalyst improves electron-hole separation, thereby enhancing photocatalytic performance. It is expected that this study will serve as a model for advancing the removal of emerging contaminants, further enhancing photocatalytic AOPs as sustainable water purification technologies.
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Jia Tang,Yuanwen Hou,Yuetian Yang,Hongquan Fu,Juan Zhang,Hejun Gao,Jinming Chang,Yunwen Liao
Hydrogen peroxide (H2O2) is a crucial industrial chemical with diverse applications, ranging from disinfection and bleaching to chemical synthesis and environmental remediation. However, conventional H2O2 production methods, such as the anthraquinone oxidation process, face significant challenges, including high energy consumption, environmental concerns, and reliance on hazardous chemicals. To address these issues, there is a growing need for the development of stable, green, and efficient production technologies. Piezoelectric catalysis has emerged as a cutting-edge solution, leveraging piezoelectric materials to convert mechanical energy into chemical energy. This process facilitates the charge separation necessary for redox reactions, offering a promising pathway for the clean and sustainable production of H2O2. In this study, S-type ZnO/Ag2O heterojunctions were synthesized using a precipitation method. This heterojunction demonstrated exceptional catalytic performance, achieving an impressive H2O2 production rate of 346.9 μmol g−1 h−1, surpassing many existing catalysts. A key breakthrough of this research lies in the dual reaction pathway mechanism of H2O2 production. Unlike traditional methods that rely on a single reaction pathway, the ZnO/Ag2O catalyst enables simultaneous H2O2 generation through both the water oxidation reaction (WOR) and the oxygen reduction reaction (ORR). This dual reaction pathway approach significantly enhances the overall yield. This study not only highlights the potential of piezoelectric catalysis as a high-performance method for H2O2 synthesis but also paves the way for further advancements in clean and sustainable chemical production.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Wei Liu,Heng Zhang,Zhe Zhang,Yali Ji,Tiantian Xu,Xusheng Li,Jiao Chen,Mengyao She,Ping Liu,Shengyong Zhang,Jian-Li Li
Solar-driven photocatalytic CO 2 -to-CH 4 conversion represents a promising strategy to mitigate the energy and climate crisis. However, it is still challenging to achieve efficient CO 2 conversion due to the difficulties of CO 2 activation, sluggish kinetics of water oxidation half-reaction and high cost of sacrificial agents in conventional reaction systems. Herein, by precisely integrating bimetallic sulfide with functionalized UiO-66 to construct a Cu 0.1 Zn 0.9 S/Bim-UiO-66 S-scheme heterojunction photocatalyst, which innovatively accomplished complete CO 2 methanation and benzimidazole synthesis in one redox cycle. Experimental results reveal that the optimized photocatalyst exhibited an exceptional CH 4 production rate of 35.2 μmol h −1 g −1 (selectivity of 100 %) and 92 % benzimidazole conversion under simulated solar irradiation. Mechanistic studies demonstrate that the S-scheme heterojunction significantly enhances photogenerated charge carrier separation efficiency through the establishment of a built-in electric field, while preserving the strongest redox potentials of the two semiconductors. Remarkably, the benzimidazole synthesis process replaced conventional H 2 O oxidation, proving beneficial for CO 2 -to-CH 4 conversion. This work provides new insights into designing high-performance photocatalysts for CO 2 conversion and the synthesis of fine chemicals.
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Journal of Materials Chemistry A
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2025
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IF 9.5
Lele Wang,Weiran Wu,Wenpeng Zhang,Xinlei Ren,Xuan Liu,Wing-Kei Ho,Jie Hu,Min Zhou
Photocatalytic hydrogen peroxide (H2O2) production using resorcinol-formaldehyde (RF) resin offers a sustainable strategy, but its efficiency is limited by high exciton binding energy, suppressing free charge carriers generation. Herein, an S-scheme heterojunction composed of RF and MgIn2S4 (RF/MIS) was constructed to minimize exciton binding energy by modulating charge transfer pathways. The well-designed S-scheme charge transfer mechanism facilitates photoexcited carrier separation, strengthening redox capability driven by the interfacial electric field. In situ irradiation X-ray photoelectron spectroscopy, temperature-dependent photoluminescence, and photoelectrochemical measurements reveal that the reduced exciton binding energy leads to enhanced oxygen reduction efficiency. The optimized RF/MIS achieves significant H2O2 production rates of 892.6 μmol·L-1·h-1 under full-spectrum (320-780 nm), specifically producing 18.2 μmol·L-1·h-1 of H2O2 under 730 nm irradiation, along with superior stability in consecutive recycling tests. The two-electron reduction mechanism is evidenced by electron paramagnetic resonance spectroscopy and rotating ring-disk electrode analysis. These findings establish fundamental connections between heterointerface-trapped exciton dynamics and photocatalytic efficiency, providing new directions for designing high-performance organic semiconductors.
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ACTA PHYSICO-CHIMICA SINICA
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2025
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IF 13.5
Yanyan Zhao,Zhen Wu,Yong Zhang,Bicheng Zhu,Jianjun Zhang
Photocatalytic oxygen reduction reaction (ORR) offers a mild and cost-effective approach for hydrogen peroxide (H 2 O 2 ) production. However, its practical application is significantly hindered by rapid charge carrier recombination and insufficient O 2 adsorption capacity in photocatalysts. To address these limitations, we developed a strategy involving the creation of S-vacancy-rich CdIn 2 S 4 (S v –CIS) to facilitate charge separation and subsequent deposition of Au nanoparticles on its surface (Au–S v –CIS) to strengthen O 2 adsorption. The results suggest that the optimized Au–S v –CIS achieves a significantly increased H 2 O 2 production yield of 2542 μmol·h·g −1 in 10%-ethanol/water solution, which is about 12.8 and 1.7 times higher than that of pure CIS and S v –CIS. Comprehensive characterizations including photoluminescence spectra, time-resolved photoluminescence spectra, transient photocurrent response, electrochemical impedance spectra, and femtosecond transient absorption spectroscopy confirm the improved charge dynamics of Au–S v –CIS. In addition, temperature-programmed desorption of O 2 combined with density functional theory calculations conclusively demonstrates the superior O 2 adsorption capacity of Au–S v –CIS. This work provides a design strategy for efficient solar–to–chemical energy conversion through cooperative photocatalyst engineering.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2025
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IF 8.4
Soodamani Periyasamy,Jun Hou,Yang Li,Natrayasamy Viswanathan,Zijun Yang,Guoxiang You,Jun Wu,Zhaoqin Huang
This study focuses on the fabrication of an effective heterojunction composite, CoTiO 3 /Cu-BDC-NH 2 MOF (CT@CuMOF) prepared for TC and Cr(VI) removal from water through a synergistic adsorptive-photocatalytic degradation process. CT@CuMOF composite exhibited maximum removal of 21.4 mg/g for TC and 42.1 mg/g for Cr(VI) under dark equilibrium, and visible light irradiation led to 72 % TC and 80 % Cr(VI) degradation within 30 min. VB-XPS results confirmed the alignment of band edges, supporting an S-scheme charge transfer mechanism between the p-type CT and n-type CuMOF. TEM results reveled a well-formed p-n heterojunction, while EIS and photocurrent density measurements demonstrated enhanced charge carrier mobility and separation. Kinetic results followed pseudo-second order for TC and Cr(VI), with Langmuir adsorption isotherm showing maximum capacities of 25.36 mg/g for TC and 45.94 mg/g for Cr(VI). ESR and radical scavenger studies confirmed hydroxyl (•OH) and superoxide (•O 2 − ) radicals as key species in TC degradation, while superoxide played dominant roles in Cr(VI) reduction. CT@CuMOF composite exhibited favorable thermodynamic conditions (ΔG° <0), endothermic processes (ΔH° >0) and excellent reusability (80 % retention after five cycles). This research highlights the novelty of CT@CuMOF composite as a sustainable material for water purification.
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PubMed
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JOURNAL OF PHYSICAL CHEMISTRY B
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2014
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IF 3.377
Yucui Hou,Jian Li,Shuhang Ren,Muge Niu,Weize Wu
Because of similar properties and very low volatility, isomers of benzene poly(carboxylic acid)s (BPCAs) are very difficult to separate. In this work, we found that isomers of BPCAs could be separated efficiently by quaternary ammonium salts (QASs) via formation of deep eutectic solvents (DESs). Three kinds of QASs were used to separate the isomers of BPCAs, including the isomers of benzene tricarboxylic acids (trimellitic acid, trimesic acid, and hemimellitic acid) and the isomers of benzene dicarboxylic acids (phthalic acid and isophthalic acid). Among the QASs, tetraethylammonium chloride was found to have the best performance, which could completely separate BPCA isomers in methyl ethyl ketone solutions. It was found that the hydrogen bond forming between QAS and BPCA results in the selective separation of BPCA isomers. QAS in DES was regenerated effectively by the antisolvent method, and the regenerated QAS was reused four times with the same high efficiency.
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CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Renzhi Xiong,Yiting Sun,Jiahao Huang,Fangde Liu,Yanhe Xiao,Baochang Cheng,Shuijin Lei
Photocatalytic production of H 2 O 2 faces challenges such as low charge separation efficiency, narrow light absorption, and sluggish reaction kinetics. This study developed a WO 3− x @Zn 3 In 2 S 6− x S-scheme heterojunction and designed atomic-level W S interface chemical bonds through a defect-induced strategy to address these challenges. Oxygen/sulfur vacancies not only promote the formation of chemical bonds but also trigger a local surface plasmon resonance effect (LSPR) in WO 3− x , enabling full-spectrum light harvesting and photothermal heating. The S-scheme charge transfer retains the high-energy electrons in Zn 3 In 2 S 6− x and holes in WO 3− x to realize dual H 2 O 2 generation pathways. Coupled with LSPR-induced thermal activation, this multidimensional strategy achieved an unprecedented H 2 O 2 yield (3891.2 μmol g −1 h −1 ) under simulated sunlight, which is 9.2 times and 161.5 times higher than that of the non-thermally activated pristine Zn 3 In 2 S 6− x and WO 3− x , respectively. In situ X-ray photoelectron spectroscopy and a series of photoelectrochemical measurements confirmed the S-scheme charge dynamics, and electron spin resonance verified the thermally enhanced reactive oxygen species generation. This work establishes defect-mediated heterointerfacial engineering as a universal paradigm for solar-to-chemical energy conversion and provides feasible insights for designing photothermal-assisted photocatalytic systems.
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SENSORS AND ACTUATORS B-CHEMICAL
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2025
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IF 7.7
Zhendong Ma,Zhijia Cui,Shunxiang Wang,Zhicheng Lin,Jiying Wei,Yongjin Zou,Lixian Sun,Heinz-Bernhard Kraatz,Cuili Xiang
The development of highly efficient room-temperature ammonia (NH 3 ) sensors is crucial for industrial production and environmental monitoring. However, existing materials generally face critical challenges, including insufficient sensitivity, humidity susceptibility, and limited charge-transfer efficiency. In this study, a synergistic strategy combining electronic structure modulation with heterointerface engineering was employed to fabricate a 2D/1D heterojunction sensing material composed of S-doped WSe 2 @polyaniline (PANI). The electronic band structure was optimized by substituting S atoms into Se sites within the WSe 2 lattice, and in situ oxidative polymerization was used to achieve vertical growth of PANI nanorods on the surface of S-WSe 2 , which significantly enhanced the gas-sensing performance of the composite. The S-WSe 2 @PANI sensor exhibited a remarkable response of 505.75 % to 100 ppm NH 3 at 25 °C and 45 % relative humidity (RH), representing 7.44-fold and 5.32-fold increases compared with pure WSe 2 and PANI sensors, respectively. The sensor also demonstrated an ultra-low theoretical detection limit of 170.31 ppb and excellent moisture resistance (with a response of 857.63 % to 100 ppm NH 3 at 80 % RH). Density functional theory (DFT) calculations revealed that the S-WSe 2 @PANI heterostructure possessed stronger NH 3 adsorption capability, while the work-function difference at the PANI/S-WSe 2 interface effectively promoted charge transfer. This study integrates electronic structure regulation and morphological synergy design strategies to establish an innovative paradigm for high-performance room-temperature NH 3 sensors with substantial potential for application in complex environmental monitoring scenarios.
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JOURNAL OF MATERIALS RESEARCH
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2025
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IF 2.9
Yang Wen,Wang Yujia,Gao Na,Zhu Zhengfa,Chen Yuanyuan,Wang Hao,Tang Xiaoning
Designing efficient visible light-driven photocatalytic antimicrobial agents presents significant challenges. In this study, S-shaped core–shell NH 2 -MIL-125/TiO 2 (NT-x) heterojunctions were constructed by simple in situ solvothermal method, as photocatalytic antimicrobial agents for efficient bactericidal use under visible light. Notably, 99.99% inhibition was achieved for both Escherichia coli and Staphylococcus aureus at low concentrations (0.02 and 0.035 mg mL −1 , respectively) after exposure to simulated sunlight for 20 min. Reasonable energy band configuration and built-in electric field of this structure provided improved photogenerated carrier transfer paths as well as enhanced separation and transport efficiency. Moreover, the core–shell structure enhanced the interaction between NH 2 -MIL-125 and TiO 2 , increased the total number of reactive sites, and promoted the efficient generation of reactive oxygen species. Finally, possible mechanisms for the inactivation of bacteria were discussed. This research offers new perspectives for the advancement of advanced metal–organic framework-based photocatalysts with antibacterial activity under visible light. Graphical abstract
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NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Sleshi Fentie Tadesse,Worku Lakew Kebede,Dong-Hau Kuo
Visible-light-driven photocatalysis is an efficient and environmentally benign approach to mitigate organic pollutants from waste effluents. A facile one-step precipitation method was used to synthesize Fe–Mo3(O,S)4−x/La4Mo2O11 (FeLaMoOS) nanocomposites. The as-prepared materials were characterized by XRD, SEM, HR-TEM, XPS, PL, EIS, photocurrent, and UV-visible spectroscopy. The type I heterojunction formed between Fe–Mo3(O,S)4−x and La4Mo2O11 exhibited a maximum light absorption response in the visible spectrum. The FeLaMoOS composite (13% Fe and 20% La) demonstrated the highest degradation efficiency, degrading 97.5% MO and 99.2% RhB in 90 min. The removal efficiency of MB was 99.6% after 45 min of magnetic stirring in the dark. The enhanced catalytic efficiency can be attributed to the effective charge separation of photoinduced e−–h+ pairs due to doping and heterojunction formation. Superoxide radicals (O2˙−) played a dominant role, while hydroxyl radicals (˙OH) played only a minor role, in the photocatalytic degradation process. Possible photocatalytic degradation mechanisms of organic dye molecules were proposed, based on the active radical species involved and the band potentials of the photocatalysts. This study can be used to establish a simple and efficient strategy for designing reusable composite photocatalysts for the degradation of organic dyes.
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MATERIALS RESEARCH BULLETIN
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2025
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IF 5.7
Yan Wang,Hui Liu,Wenzhi Li,Na Li,Guoyong Wang,Xiaochao Zhang
Rational structural design of S-scheme heterojunctions in semiconductor-based photocatalysts constituted a pivotal strategy for optimizing their photocatalytic performance through efficient charge carriers separation and enhanced redox capability. Herein, a novel two-dimensional 2D/2D heterostructure is successfully constructed by integrating bismuth oxychloride (BiOCl) nanosheets onto g-C 3 N 4 nanosheets, which significantly enhances the interfacial contact area between these two components and facilitates the migration of photogenerated charge carriers by forming a built-in electric field. Specifically, thiourea, urea, and melamine are employed as the precursor to prepare a series of g-C 3 N 4 /BiOCl photocatalysts, denoted as T-CN/BiOCl, U-CN/BiOCl, and M-CN/BiOCl, respectively. Benefiting from the excellent hydrophilic characteristics, wide photoresponse ranges and efficient interfacial charge transfer, M-CN/BiOCl displays exceptional degradation performance for both cationic rhodamine B (RhB) dyes and anionic methyl orange (MO). Under simulated sunlight irradiation, the photocatalytic degradation of RhB (20 mg/L) and MO (20 mg/L) can exhibit distinct kinetics, with complete removal achieves in 10 min and 100 min , respectively. Notably, the degradation rate constants of RhB demonstrate the remarkable superiority, being 29.2-fold and 475.2-fold higher than those of MO under simulated sunlight and visible light irradiation.
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