INORGANIC CHEMISTRY
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2024
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IF 4.3
Pinghua Chen,Yirou Wu,Xuan Guo,Mengxue Wang,Cong Yu,Hualin Jiang,Weiqiang Zhou,Guanghui Wu,Jianan Yan
The rational design of nonnoble-metal-based catalysts with high electroactivity and long-term stability, featuring controllable active sites, remains a significant challenge for achieving effective water electrolysis. Herein, a heterogeneous catalyst with a FeCo-S and Ni2P heterostructure (denoted FeCo-S/Ni2P/NF) grown on nickel foam (NF) was synthesized by a solvothermal method and low-temperature phosphorization. The FeCo-S/Ni2P/NF catalyst shows excellent electrocatalytic performance and stability in alkaline solution. The FeCo-S/Ni2P/NF catalyst demonstrates low overpotentials (η) for both the hydrogen evolution reaction (HER) (49 mV@10 mA cm–2) and the oxygen evolution reaction (OER) (279 mV@100 mA cm–2). Assembling the FeCo-S/Ni2P/NF catalyst as both cathode and anode in an electrolytic cell for overall water splitting (OWS) needs an ultralow cell voltage of 1.57 V to attain a current density (CD) of 300 mA cm–2. Furthermore, it demonstrates excellent durability, significantly outperforming the commercial Pt/C∥IrO2 system. The results of experiments indicate that the heterostructure and synergistic effect of FeCo-S and Ni2P can significantly enhance conductivity, facilitate mass/ion transport and gas evolution, and expose more active sites, thereby improving the catalytic activity of the electrocatalyst for the OWS. This study provides a rational approach for the development of commercially promising dual-functional electrocatalysts.
研究领域:
材料科学
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电化学
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可再生能源
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产品关联
DOI
PubMed
高影响因子
Solar RRL
·
2022
·Vol. 6
·期 8
·2200279
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IF 9.173
Jie Deng,Wanying Lei,Junwei Fu,Huile Jin,Quanlong Xu,Shun Wang
Herein, photocatalytic selective oxidation of hydrocarbons through O 2 represents a promising way for fine chemical industry on account of its mild reaction condition. In this work, Co 3 O 4 -modified BiOBr/AgBr S-scheme heterojunction can effectively oxidize sp 3 C H bonds at benzylic position to its corresponding aldehydes, with a toluene to benzaldehyde selectivity of 94%, which is much higher than that of pure BiOBr (21.7%) and AgBr (58.9%). A unique S-scheme charge-transfer mode is confirmed for the ternary composites by the X-ray photoelectron spectroscopy and reactive species quenching measurement. The remaining photogenerated electrons in AgBr with powerful reduction ability can react with O 2 to generate •O 2 − species, which can further oxidize the benzyl radical formed on the Co 3 O 4 surface to peroxyl radicals and then thermodynamically decompose to benzaldehyde. Herein, this work has important guiding significance for the structure regulation of photocatalysts and application in selective oxidation of sp 3 C H bond of hydrocarbons.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2020
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IF 5.162
Lei Wang,Cunzhi Zhang,Hui He,Hongxiang Zhu,Wei Guo,Shile Zhou,Shuangfei Wang,Joe R. Zhao,Jian Zhang
A novel cellulose-based colorimetric sensor (DAC-Tu) with N, S sites for Ag + was prepared. The DAC-Tu exhibited excellent selectivity and sensitivity for Ag + with a naked eyes color change from white to black in mixed metal ions aqueous solutions. The naked-eye in-situ detection limit of DAC-Tu for Ag + was 10 −6 mol/L within 10 min. The cellulose matrix and the grafted functional groups ( C S, NH 2 ) of DAC-Tu all contributed to the low naked-eye in-situ detection limit. The mechanism of the visual recognition of DAC-Tu sensor for Ag + was proposed, the N and S atoms of DAC-Tu preferentially coordination chelated with Ag + to form N Ag, S Ag, and Ag 2 S, and enriched on the cellulose matrix, thus the DAC-Tu presented different color change in response to different concentrations of Ag + . The as-prepared DAC-Tu colorimetric sensor showed a great application prospect for in-situ naked eyes detection of Ag + .
研究领域:
分析化学
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材料科学
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环境科学
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2023
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IF 4.1
Zhengqiaoruo Zhu,Nan Zhou,Yakun Li,Xiaoli Zhang,Linlin Zhang
Due to their unique persistence in the environmental cycle, pharmaceuticals and personal care products (PPCPs) are increasing concern in the scientific community. Therefore, the development of new energy-saving and environmentally compatible technologies to remove these pollutants is highly requested. In this work, an S-scheme photocatalytic nanoreactor was synthesized by Fe 2 O 3 nanoparticles to S doped carbon nitride nanosheets . The unique structure of S-scheme Fe 2 O 3 /SCN heterojunction enhances its optical absorption and has a large number of active sites and photogenerated carrier separation. Consequently, the Fe 2 O 3 /SCN demonstrated excellent photo-Fenton degradation activities under visible light irradiation. Remarkedly, 5 mg/L of norfloxacin is completely photo-Fenton degraded following 25 min under visible light irradiation. It further shows that ·OH and ·O 2− play an important role in the photo-Fenton catalytic reaction , leading to the decomposition of norfloxacin. The degradation of tetracycline further demonstrates that this photo-Fenton catalytic system can be effectively used to remediate pharmaceutical and personal care product contamination in environmental waterways.
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
Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Congcong Wang,Boya Liu,Guorong Wang,Zhiliang Jin
The fabrication of an S-scheme heterojunction represents a highly effective approach for achieving efficient and environmentally friendly artificial photosynthesis. In this study, a highly efficient S-scheme heterojunction was developed by modifying ZnIn 2 S 4 , a kind of chrysanumi-like flower, with a two-dimensional sheet of AgCoO 2 by physical grinding method, which realized H 2 generation and H 2 O 2 generation under visible light conditions. AgCoO 2 exhibits significant potential as a cocatalyst owing to its narrow band gap, black appearance, and robust stability. Because of the difference in Fermi levels, the two-dimensional AgCoO 2 and three-dimensional ZnIn 2 S 4 are closely fitted to accelerate the charge migration between the interfaces, thus improving the photocatalytic properties of the materials. In-depth investigations utilizing in situ X-ray photoelectron spectroscopy alongside additional experimental methodologies have definitively illuminated the intricate charge partition and migration dynamics operative within the S-scheme heterojunction interface between the two catalysts. Photochemistry and photoluminescence spectroscopy further confirmed that the formation of heterojunction accelerated the migration of photogenerated charge carriers, and electron spin resonance provided further evidence for the active substances in the reaction. This study has made additional advancements in the development of efficient S-scheme heterojunction materials for driving photocatalytic water cleavage.
研究领域:
材料科学
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环境科学
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光化学
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产品关联
DOI
高影响因子
LANGMUIR
·
2022
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IF 4.331
Zhiliang Jin,Xiaohong Li,Teng Li,Youji Li
Graphdiyne (g-CnH2n–2) is a new carbon material composed of sp and sp2 hybrid carbon atoms. Since the synthesis by Li’s team, graphdiyne has been widely studied in other fields because of its excellent properties. In this paper, graphdiyne was synthesized from copper-containing materials and the composite GDY/CuI/MIL-53(Al) S-scheme heterojunction is prepared for photocatalytic cracking of water to produce hydrogen. First, GDY/CuI was prepared by organic synthesis, and then GDY/CuI was anchored on the surface of MIL-53(Al) by in situ ultrasonic stirring. After the continuous optimization of experimental conditions, the final hydrogen evolution rate is much higher than that of MIL-53(Al). This efficient photocatalytic performance can be attributed to the S-scheme heterojunction formed by the unique energy band arrangement. At the same time, the mechanism of charge transfer was demonstrated by in situ irradiation X-ray photoelectron spectroscopy. The strong interaction among the three strongly promotes the separation and transfer of photogenerated electron–hole pairs.
研究领域:
材料科学
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能源化学
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光催化技术
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产品关联
DOI
PubMed
高影响因子
FUEL
·
2024
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IF 6.7
Weijie Zhang,Lufang Fan,Kai Wei,Changchang Ma,Sheng Feng
This work provided innovative apertures with great exploratory value for engineering oxygen defects and designing S-scheme photocatalysts for efficient photocatalytic hydrogen production. In this study, the S-scheme heterostructure CdLa 2 S 4 /MoO 3-x (CLSMO) was synthesized by electrostatic self-assembly to solve the problem of electron hole recombination in hydrogen evolution half-reaction. The results showed that the hydrogen precipitation rate of the optimized CLSMO was 41.41 mmol g -1 h −1 , which was 12.70 times higher than that of monomeric CLS. The presence of oxygen vacancies (Ovs) increased the range of light absorption and reduces the surface dynamic barrier. More importantly, the experimental results and density functional theory (DFT) calculations showed that CdLa 2 S 4 and MoO 3-x strictly followed the S-scheme charge transfer path, accumulating photogenerated electrons in the CLS conduction band, and achieving efficient photocatalytic hydrogen evolution. This study provided a new idea to solve the problem of photocatalyst activity using OVs and S-scheme heterojunctions.
研究领域:
材料科学
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能源化学
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产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
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2024
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IF 1.5
Lei Miao,Zhang Jun,Liu Chang,Guo Junpeng,Li Ye
Herein, S-nZVI was synthesized to remove U(VI) from seawater. At a S/Fe ratio of 0.18 and pH of 5, adsorption of U(VI) reached equilibrium after 20 min with the removal rate of 97.93%. And the maximum adsorption capacity obtained by Langmuir isothermal model was 1177.09 mg/g. Moreover, S-nZVI exhibited selectivity in the presence of interfering ions, regeneration performance in 5 reuse cycles, and high removal efficiency in actual seawater. Mechanism investigations showed that UO 2 2+ uniformly adsorbed on S-nZVI surface was irreversibly reduced and generated UO 2 precipitates due to the electrons provided by S 2− , S 2 2− and Fe(II).
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
aBIOTECH
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2025
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IF 5
Zhang Wenyang,Wang Yanjiao,Li Wenyan,Wu Shaowen,Chen Yuanyuan,Ye Mingyang,Huang Wenjie,Fernie Alisdair R.,Yan Shijuan
Protein post-translational modifications such as phosphorylation and S -nitrosylation regulate protein functions and cellular programs in eukaryotes. Moreover, extensive evidence suggests crosstalk between these modifications. However, we lack a comprehensive method for the simultaneous detection and analysis of multiple post-translational modifications. Here, we present an optimized workflow that identifies phosphorylation and S -nitrosylation sites using a novel phosphate affinity tag switch technique. Validation with model proteins and complex biological samples confirmed the high sensitivity, coverage, and reproducibility of this method. Applying this method to Arabidopsis thaliana seedlings revealed 12,552 phosphorylation sites and 6,108 S -nitrosylation sites, representing the largest single-study dataset of S -nitrosylation sites to date. This approach enhances our understanding of post-translational modification dynamics in plant signaling, stress responses, and metabolism.
研究领域:
植物生物学
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生物化学
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分子生物学
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蛋白质组学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yuanzheng Zhang,Chao Liang,Kaihang Zhang,Yuxin Zeng,Yufei Zhou,Xiaoxia Zhang,Lifeng Yin,John Crittenden,Junfeng Niu
The persistent challenge of nitrate (NO 3 – ) pollution in water systems, profoundly impacting ecosystems and human health, demands effective remediation strategies. Here, we present an innovative S-scheme Cu@CN/TiO x heterojunction for high-efficiency photocatalytic denitrification (PCDN). Evaluation of its performance demonstrates exceptional NO 3 – removal efficiency (99.5%) and remarkable N 2 selectivity (95.5%), with 13.7 and 4.1 times higher rate constants of NO 3 – removal than the individual Cu@CN and TiO x components. Notably, this catalyst exhibits impressive stability across multiple cycles, maintaining consistent high conversion rates and selectivity. Mechanistic insights unveiled a tandem reaction pathway where Cu@CN selectively reduced NO 3 – to NO 2 – , followed by the TiO x -mediated CO 2 • – generation, enabling highly selective NO 2 – to N 2 conversion. This unique catalytic system, featuring spatially separated redox-active sites, presents a promising avenue for efficient, selective, and stable denitrification processes, offering significant potential in addressing water pollution challenges and advancing tandem catalytic systems.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Ruiqi Zhang,Runcheng Liu,Zhihan Ding,Jinzhu Ma,Tao Wang,Dafeng Zhang,Junchang Liu,Peiqing Cai,Xipeng Pu
Photocatalytic hydrogen evolution is regarded as an economically viable and environmentally benign strategy. However, the practical application of photocatalytic hydrogen production is constrained by the sluggish reaction kinetics and rapid recombination of photogenerated charge carriers. Herein, a Cu 3 SnS 4 /Mn 0.3 Cd 0.7 S (CTS/MCS) S-scheme photocatalyst with photothermal effect was synthesized via an ultrasound-assisted self-assembly method and applied for the first time to photocatalytic hydrogen evolution. The hydrogen production rate of CTS/MCS-5 reached 72.5 ± 0.8 mmol/h g −1 , representing a 3.44-fold increase relative to Mn 0.3 Cd 0.7 S, and the apparent quantum yield of CTS/MCS-5 reached 17.5 % at 450 nm. The photothermal effect induced by Cu 3 SnS 4 can elevate the local surface temperature of the catalyst, providing a portion of the energy required for the reaction, thereby reducing the reaction barrier and further promoting photocatalytic reactions. This research highlights the significance of the S-scheme heterojunction and the photothermal effect as an effective strategy to enhance photocatalytic activity, offering new insights for the development of photocatalytic hydrogen evolution technology.
研究领域:
材料科学
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能源化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2017
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IF 5.951
Shusen You,Songqi Ma,Jinyue Dai,Zhen Jia,Xiaoqing Liu,Jin Zhu
Hexahydro-s-triazine (HT) derivatives are acid-sensitive compounds. 4,4′,4″-(1,3,5-Hexahydro-s-triazine-1,3,5-triyl) tris(N-(2-aminoethyl) benzamide) (HT-A) bearing three amino groups was synthesized as a curing agent to prepare the acid-degradable epoxy resin. The chemical structures of HT-A and its precursor were confirmed by 1H NMR and 13C NMR. The synthesized HT-A, as well as the commercialized 4,4′-diaminodiphenylmethane (DDM) (for use as the control) were used to cure diglycidyl ether of bisphenol A (DGEBA), respectively. The property examinations performed by dynamic mechanical analysis (DMA), differential scanning calorimeter (DSC), thermogravimetric analysis (TGA), and tensile test demonstrated that the HT-A-cured epoxy presented high thermal and mechanical properties which were comparable with those of the DDM cured one. Meanwhile, degradation investigation indicated that the HT-A-cured epoxy could be controllably degraded with strong acid stimuli. Thus, HT-A has a great potential to produce recyclable thermosets with satisfactory properties.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）