JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.4
Hongxia Zhang,Junxin Huang,Ming Zhong,Fangzhen He,Na Dong,Bitao Su,Ziqiang Lei
To address the remediation needs of antibiotic-contaminated water, this study developed a highly efficient and stable novel photocatalyst. A 2D/3D S-scheme g-C 3 N 4 /Bi 2 MoO 6 (CN/BMO) heterojunction was synthesized via a simple preparation method, with its core mechanism relying on the internal electric field (IEF) formed at the semiconductor interface. This field actively regulates the S-scheme charge transfer pathway, a process directly validated through a series of photoelectrochemical analyses: significantly quenched photoluminescence signals and shortened carrier lifetimes confirmed efficient interfacial recombination, while enhanced photocurrent responses and reduced electrochemical impedance indicated effective spatial separation of electron-hole pairs. The optimized carrier separation efficiency significantly improved the photocatalytic performance of the material. Under visible light irradiation, the degradation efficiency of tetracycline (TC) reached 85%, with degradation rates exceeding 80% for multiple antibiotic pollutants. Additionally, the material exhibited excellent stability in five consecutive cycling experiments. Mechanistic studies revealed that the synergistic effect of superoxide radicals ( · O 2 − ) and photogenerated holes (h + ) dominated the reaction process, as conclusively verified by electron paramagnetic resonance (EPR) spectroscopy. Degradation pathway analysis via mass spectrometry (MC-LS) demonstrated that TC primarily undergoes cleavage through demethylation, hydroxylation, and ring-opening reactions, with simultaneous assessment of the toxicity and ecological risks of reaction intermediates. This work provides new theoretical foundations and practical solutions for the photocatalytic removal of antibiotics in real water bodies.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Qinghua Liu,Peiqing Cai,Hengshuai Li,Xue-Yang Ji,Dafeng Zhang,Xipeng Pu
S-scheme heterojunctions can offer an effective strategy for spatially separating photogenerated charge carriers, thereby sig F nificantly enhancing photocatalytic performance. In this study, cadmium sulfide (CdS)/copper tungstate (C F uWO 4 ) (CdS/CW) S-scheme heterojunction photocatalysts with adjustable components were fabricated by decorating CdS nanorods with CuWO 4 nanoparticles. The optimal hydrogen evolution rate (2725.91 μmol g –1 h –1 ) of CdS/CW-10% with excellent cycling stability under visible light is 10.1-fold higher than pure CdS. Density functional theory calculations and photoelectrochemical analyses confirmed that the S-scheme charge-transfer mechanism from CdS to CuWO 4 is responsible for the enhanced photocatalytic performance by promoting charge separation. Additionally, the photothermal effect of CuWO 4 increased the local temperature of the photocatalyst, further accelerating the reaction kinetics. This study highlights a dual-enhancement approach based on interfacial charge modulation by constructing an S-scheme heterojunction and photothermal activation, providing valuable insights into the design of high-efficiency S-scheme photocatalysts for solar-driven hydrogen production.
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2024
·Vol. 16
·期 14
·2004
·
IF 4.7
Yingxian Liu,Lizhen Ge,Kuiqian Ma,Xiaoming Chen,Zhiqiang Zhu,Jirui Hou
Polymer flooding is an effective development technology to enhance oil recovery, and it has been widely used all over the world. However, after long-term polymer flooding, a large number of oilfields have experienced a sharp decline in reservoir development efficiency. High water cut wells, serious dispersion of residual oil distribution and complex reservoir conditions all bring great challenges to enhance oil recovery. In this study, the method of enhancing oil recovery after polymer flooding was studied by taking the S Oilfield as an example. A surfactant–polymer system suitable for high-permeability heterogeneous oilfields was developed, comprising biogenic surfactants and polymers. Microscopic displacement experiments were conducted using cast thin sections from the S Oilfield, and nuclear magnetic resonance was employed for core displacement experiments. Numerical simulation experiments were also conducted on the S Oilfield. The results show that the enhanced oil recovery mechanism of the surfactant–polymer system is to adjust the flow direction, expand the swept volume, emulsify crude oil and reduce interfacial tension. Surfactant–polymer flooding proves to be effective in improving recovery efficiency, significantly reducing the time of flooding and further enhancing the strong swept area. The nuclear magnetic resonance results indicate a high amplitude of passive utilization of residual oil during the surfactant–polymer flooding stage, highlighting the enormous potential for an increased recovery ratio. Surfactant–polymer flooding emerges as a more suitable technique to enhance oil recovery in the post polymer-flooding stage in high-permeability heterogeneous oilfields.
✓ 已验证
DOI
高影响因子
POLYMER
·
2011
·Vol. 52
·期 23
·5312-5319
·
IF 3.829
Dongyang Chen,Shuanjin Wang,Min Xiao,Dongmei Han,Yuezhong Meng
High-molecular-weight bulky-block poly(fluorenyl ether thioether ketone)s were successfully synthesized by a two steps one-pot protocol using N,N′ -dimethy- S -carbamate masked dithiols for vanadium redox flow battery (VRB) application. The followed sulfonation procedure gave birth to novel sulfonated block poly(fluorenyl ether thioether ketone)s (SPFETKs) with controlled ionic exchange capacities (IEC). Membranes with proton conductivities higher than (IEC > 1.66 mequiv. g −1 ) or comparable to (IEC < 1.66 mequiv. g −1 ) that of Nafion117 membrane were achieved. The VO 2+ permeabilities of SPFETKs membranes were much lower than that of Nafion117 membrane. The thermal properties, mechanical properties, oxidative stability , water uptake, proton conductivity, VO 2+ permeability and cell performance were investigated in detail.
研究领域:
高分子化学
·
能源材料
·
电化学
·
膜科学与技术
·
功能高分子
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2022
·Vol. 9
·期 21
·2200393
·
IF 6.389
Ting Wang,Bin Yao,Yongfeng Li,Zhanhui Ding,Jiayong Zhang,Chunkai Wang,Jia Liu
An amorphous boron nitride (aBN) layer is inserted between Cu 2 ZnSn(S,Se) 4 (CZTSSe) films and Mo back electrode of CZTSSe solar cell by magnetron sputtering to mitigate the carrier recombination at back interface by tuning energy band alignment and suppressing formation of secondary phases and Mo(S,Se) 2 . The effect of the aBN layer on power conversion efficiency (PCE) of CZTSSe solar cell is investigated by numerical simulation and experiment. It is found that PCE is greatly improved via the insertion of suitable thick aBN layer, which is attributed to increased open-circuit voltage ( V OC ) and fill factor (FF). By quantitative analysis, it is deduced that the increased V OC originates mainly from decrease in reverse saturation current density ( J 0 ), followed by increase in shunt resistance ( R Sh ), and the increased FF is mainly due to the decreased J 0 , followed by increased R Sh and decreased photogenerated current density ( J L ). By optimizing aBN thickness through tuning sputtering time, the PCE increases from 8.68% of CZTSSe solar cell without the aBN layer to 9.51% of the CZTSSe solar cell with aBN layer. The influence mechanism of the aBN layer on the PCE is suggested by analyzing quantitatively the effect of the aBN layer on J L and electrical parameters.
研究领域:
光伏技术
·
材料科学
·
半导体器件
·
薄膜太阳能电池
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Fangjie Xie,Ping Su,Runcheng Liu,Dafeng Zhang,Junchang Liu,Peiqing Cai,Xipeng Pu
While semiconductor photocatalysis holds great promise for solar-to‑hydrogen conversion, the intrinsic limitations of rapid charge recombination and narrow spectral response continue to impede practical implementation. Herein, this study successfully constructed a ZnIn 2 S 4 /Co 0.15 Fe 0.85 S 2 (ZIS/Co-FS) S-scheme heterojunction with photothermal enhancement effects. Cobalt (Co) doping not only induced a phase transition of FS from the marcasite phase to the pyrite phase, transforming its morphology from interlaced flakes into nanoparticles, but also adjusted the conduction band position to a more negative potential, effectively optimizing the energy band structure. Performance tests revealed that the optimal sample, ZIS/Co-FS-2%, achieved a photocatalytic hydrogen production rate of 2.2 mmol·g −1 ·h −1 , which was 7.3 times and 2.2 times higher than those of pure ZIS and undoped ZIS/FS, respectively. By combining various characterization results along with density functional theory calculations, the charge transfer pathway following the S-scheme heterojunction was further validated, suppressing the recombination of photoinduced charges. The photothermal effect raised the surface temperature of photocatalyst particles and thus significantly accelerated the reaction kinetics. This study offers a novel strategy for designing efficient metal sulfide photocatalysts through the synergistic integration of transition metal doping, heterojunction engineering, and photothermal.
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 3
·2652
·
IF 4.6
Yongjian Pan,Shancai Guo,Teng Wang,Jianyuan Lin,Zhijian Jia,Fuhang Xu,Renyue Huang,Haili Wang,Chunjie Bai,Jianghua Chen
Nitrogen and sulfur co-doped carbon quantum dots (N,S-CQDs) were synthesized via a green, one-step hydrothermal method using waste lemon peel as the carbon source and glutathione (GSH) as the N,S dopant in a dimethylformamide (DMF) medium. The reaction was conducted at 180 °C for 10 hours to achieve efficient synthesis. The resulting N,S-CQDs showed excellent water dispersibility, strong photostability, and bright fluorescence, with optimal excitation and emission wavelengths of 340 nm and 420 nm, respectively. High-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FT-IR) confirmed their uniform morphology and successful incorporation of nitrogen and sulfur heteroatoms. Notably, the fluorescence of the N,S-CQDs could be rapidly and selectively quenched by Hg 2+ within 10 minutes at room temperature, without requiring any additional surface modification of the CQDs or auxiliary reagents in the sensing procedure. Under optimized conditions, the sensor exhibited a linear fluorescence quenching response to Hg 2+ over the concentration range of 17.6 nM to 20 µM ( R 2 = 0.9899), with a low detection limit of 17.6 nM. Mechanistic studies suggested that the quenching primarily resulted from the formation of nonfluorescent complexes between Hg 2+ and functional groups on the CQD surface. The developed sensor was successfully applied to detect trace levels of Hg 2+ in real lake water samples collected near textile manufacturing sites, demonstrating its potential as a sustainable, rapid, and cost-effective tool for practical environmental mercury monitoring. Nitrogen and sulfur co-doped carbon quantum dots (N,S-CQDs) were synthesized via a green, one-step hydrothermal method using waste lemon peel as the carbon source and glutathione (GSH) as the N,S dopant in a dimethylformamide (DMF) medium.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Qianmei Chen,Leyang Yu,Houcheng He,Qian Li,Rui Huang,Jianfeng Wen,Ming Li,Li Jiang,Anqi Zhang,Guanghui Hu,Fengming Hou,Shuilin Li
Developing high-performance transition metal-based electrocatalysts remains a critical challenge in water electrolysis for green hydrogen production. Herein, a dual-pronged modification approach is proposed, aimed at fine-tuning the local electronic structure and optimizing the 3D morphology of NiFe-layered double hydroxide (NiFe-LDH). By coupling Mn/Cr co-doping with subsequent sulfurization on NF, a self-supported S-MnCr-NiFe/NF catalyst was successfully fabricated. In 1.0 M KOH, the as-prepared catalyst exhibits remarkable bifunctional electrocatalytic activity, with ultra-low overpotential values of 141 mV for hydrogen evolution reaction (HER) and 151 mV for oxygen evolution reaction (OER) at 10 mA cm −2 . Moreover, the S-MnCr-NiFe/NF catalyst retains excellent stability even after 2500 cyclic tests and 100 h of continuous operation. Furthermore, when S-MnCr-NiFe/NF catalysts are employed as a bifunctional electrode in a two-electrode water-splitting device, the assembled electrolyzer delivers 10 mA cm −2 at 1.42 V. This study demonstrates a scalable and cost-effective paradigm for designing high-efficiency transition metal-based catalysts, offering significant potential for industrial-scale green hydrogen production.
✓ 已验证
DOI
高影响因子
MACROMOLECULES
·
2026
·
IF 5.7
Ying Zheng,Mengru Ding,Chang Zeng,Lingling Ni,Wangkai Xiang,Chengtao Yu,Meijin Jin,Tengjiao Hu,Guorong Shan,Yongzhong Bao,Junfeng Liu,Pengju Pan
Poly(ether ester)s (PEEs) are an important class of thermoplastics that combine the good physical performance of both polyether and polyester blocks. However, their heterogeneous block structures complicate both the synthesis and the crystallization of PEEs. In this study, we synthesized a series of long-spaced PEEs with an alternative distribution of ether and ester segments from diethylene glycol (DEG) and n-methylene diacids (n = 6–18) and investigated their polymorphic crystallization and phase transition. The melting temperature and crystallinity of PEEs enhance with increasing the CH2 segment length of used diacid monomer. Interestingly, PEEs show temperature-dependent crystal polymorphism and multistage phase transition, depending on the CH2 segment length and crystallization temperature (Tc). Dual and triple crystal polymorphisms are found in the PEEs with medium CH2 segments (growth of hexagonal form II and form I at low and high Tc, respectively) and in those with long CH2 segments (growth of orthorhombic form III, hexagonal form II, and form I at low, medium, and high Tc, respectively). Phase transitions of form III to II and II to I are detected in PEEs upon heating, accompanied by the increase of structural stability. This study provides fundamental guidance for developing PEEs with tunable crystalline structures and properties.
✓ 已验证
DOI
高影响因子
Small
·
2026
·
IF 11.8
Jiacheng Zheng,Yulong Deng,Wenting Chen,Chengliao Deng,Xiaoming Cai,Jinming Cai,Honglin Tan
Zinc indium sulfide (ZnIn 2 S 4 , ZIS), a visible-light-responsive photocatalyst, has garnered significant attention due to its facile synthesis, high stability, suitable band gap, and abundant active sites. This study innovatively constructed a CNT@Ag@ZIS tubular structure, introducing Ag mediators as electron donors at the CNT-ZIS interface. Results demonstrate that the Ag mediators establish clear interfacial contact with both hexagonal ZIS and CNT. Consequently, ZIS exhibits markedly enhanced photocurrent response and improved separation efficiency of photogenerated charge carriers. The catalyst achieved a remarkable hydrogen evolution rate of 18.44 mmol g −1 h −1 , representing an 8.7-fold enhancement over pristine ZIS. The study revealed that Ag, with its high Fermi level, facilitates interfacial electron transfer to ZIS. This induces a downshift of the p-band center (3p orbitals of S) in ZIS, simultaneously prolonging the H─S bond length and increasing the antibonding orbital occupation. This electron restructuring creates electron-rich S (2+δ)− active sites, substantially lowering the H 2 desorption energy barrier. Thus, the surface reaction kinetics of the sulfide are optimized through a regulation strategy targeting antibonding orbitals.
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Jingyue Wang,Xueqing Li,Xinqiang Zhao,Yuelong Xu,Tifeng Jiao
Hard carbon (HC) are prepared through a one-step carbonized method to obtain Zn/S co-doping. • The spacing of layers of HC is regulated through the crosslinking degrees of phenolic resins. • The prepared HC has a high performance for sodium-ion batteries. • The heteroaton co-doping and the regulation of layers spacing play a synergistic effect to improve the performance of HC. The abundance and low cost of sodium make sodium-ion batteries a promising candidate for large-scale energy storage applications. However, the development of high-performance anode materials remains a critical challenge. Herein, a series of Zn/S co-doped hard carbon materials are synthesized by high-temperature pyrolysis using phenolic resins with different crosslinking degrees as precursors, zinc chloride as zinc source, and trithiocyanuric acid as sulfur source. The synergistic effect between precursor crosslinking density and heteroatom co-doping on the microstructure and sodium storage performance of hard carbon is systematically investigated. Electrochemical tests demonstrate that the Zn/S-HC 7.5:10-HMTA delivers high reversible capacity, excellent Coulombic efficiency, and stable long-term cycling. Kinetic analysis reveals a dominant capacitive contribution and the highest Na⁺ diffusion coefficient among all samples. This work reveals that an effective approach to achieving high-performance hard carbon anodes for sodium-ion batteries is to optimize precursor crosslinking together with Zn/S co-doping. Download: Download high-res image (139KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
TOXICOLOGY LETTERS
·
2026
·
IF 3.1
Qian Li,Yingwei Zhang,Yanjing Hu,Ziheng Liu,Shize Cui,Dongqiong Wei,Lu Yue,Qian Du,Tao Liu,Dejun Huang,Yongmei Qi
Smaller polystyrene nanoplastics (PS-NPs) can act as vectors for co-existing environmental heavy metals like lead (Pb). The complex neurological health risks posed by these co-exposures are concerning, but their combined neurotoxicity mechanism remains unclear. This study investigated the individual and combined toxic impacts of PS-NPs (5 mg/kg in mice, 50 μg/mL in HT22 cells) and Pb (100 mg/L in mice, 10 μg/mL in HT22 cells) on hippocampal neurons, and explored the underlying mechanisms. The results show that PS-NPs facilitate Pb accumulation in the mouse hippocampus and HT22 cells via clathrin-mediated endocytosis. Co-exposure to Pb and PS-NPs, but not either alone, synergistically induced hippocampal neuronal damage, manifesting as synaptic loss and memory deficits in mice, and triggered S-phase cell cycle arrest alongside oxidative stress in HT22 cells. Mechanistically, Pb+PS-NPs caused mitochondrial dysfunction and shifted mitochondrial dynamics towards excessive fission, evidenced by upregulated DRP1/p-DRP1 S er 616 and downregulated MFN1/2, and activated PINK1/Parkin-mediated mitophagy. Crucially, inhibition of this mitochondrial fission-mitophagy axis by Mitochondrial Division Inhibitor 1 or cyclosporin A attenuated mitochondrial damage, rescued S-phase arrest, and alleviated hippocampal neuronal injury. Our findings unveil a novel pathway wherein the mitochondrial fission-mitophagy axis drives neuronal cell cycle arrest and cognitive impairment, providing new insights into the risks of combined pollutant exposure.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）