APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
·
IF 21.1
Xue Wang,Guo Li,Hao Huang,Hongxiang Jin,Yangyingzhi Liu,Fan Yang,Rong He,Wenkun Zhu
Electrochemical uranium extraction in real nuclear wastewater containing ultrahigh concentration of F - is challenging, which requires the development of extraction material with highly exposed active sites for dominant uranyl complex species. Herein, we implant open active pairs of Cu + -SO x on an open flower-structured Cu-S-O nanosheets by pulse electro-oxidation, enabling the efficient electrochemical uranium extraction in real nuclear wastewater with F - . In this case, the open structure ensures the sufficient contact with electrolyte, together with the open active pairs selective binding with the dominant UO 2 F x species. In simulated nuclear wastewater, the open Cu-S-O nanosheets with open active pairs possessed an optimum extraction efficiency of 98.6 % in 300 min, which was 1.2-time larger than that of CuS nanosheets. Moreover, the Cu-S-O nanosheets maintained the remarkable efficiency regardless of the variation of pH, the interfering ions, and the ratio of U/F. The mechanistic study revealed an evolution of UO 2 F x adsorption, uranium reduction, and UO 2.34 crystallization. In real acidic nuclear wastewater from the fabrication of fuel element, the Cu-S-O nanosheets electrochemical extracted 95.6 % of the uranium, with a facile collection of the uranium oxide product.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Jiaxing Wu,Panzhe Qiao,Pan An,Mengshen Zhang,Hao Xiu,Zeyu Song,Kadi Li,Yongpeng Cui,Yajun Wang,Wenqing Yao
Non-precious metal cocatalysts and interfacial charge transfer dynamics have long been recognized as critical research frontiers in photocatalytic hydrogen production via water splitting. In this study, we demonstrate a highly efficient Mo 2 C/CdS composite photocatalyst, where the construction of Mo-S chemical bonds significantly enhances interfacial charge transfer. Mo 2 C, as an effective non-noble metal cocatalyst, facilitates the efficient acceptance of photogenerated electrons from CdS. The formation of Mo-S bonds substantially boosts the hydrogen evolution activity. Remarkably, the optimized 7 wt% Mo 2 C/CdS composite achieves a photocatalytic hydrogen production rate of 19.94 mmol h -1 g -1 , representing a 51-fold enhancement compared to pristine CdS (0.39 mmol h -1 g -1 ). Furthermore, this hydrogen evolution rate surpasses that of the Pt/CdS composite by 296%. Synchrotron radiation analysis provides direct evidence for the formation of Mo-S chemical bonds at the interface. Additionally, DFT calculations reveal that the Gibbs free energy change for hydrogen adsorption on Mo 2 C/CdS is reduced by -0.23 eV, further confirming the favorable thermodynamics for hydrogen generation. This study not only validates Mo 2 C as a promising cocatalyst but also highlights its potential to replace the benchmark Pt in photocatalytic water splitting. The findings offer valuable insights by intentionally constructing interfacial chemical bonds to accelerate charge transfer and significantly enhance photocatalytic performance.
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ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yutong Tong,Butian Chen,Chong Liu,Ruoyu Wang,Dewen Wang,Tianran Zhang,Xiaobai Ma,Limei Sun,Jinbo Yang,Wenyun Yang,Xiangfeng Liu
Halide solid electrolytes (SEs) show great potential in all-solid-state batteries (ASSBs) because of their high ionic conductivity and high oxidative stability. But the long-term cycling stability remains a major concern due to the cathode/halide interface side reactions, especially under high current density. Herein, a s-p-d orbital hybridization strategy is proposed via introducing Zr 4+ and F − into Li 3 InCl 6 (LIC-ZrF 4 ) to regulate the electron localization structure around the central In 3+ . The electron transfer between the cation and Cl is alleviated by the enlarged bandgap (4.485–4.894 eV) with ZrF 4 introduction, and more electrons aggregate around In 3+ after s-p-d hybridization among Zr, In, and Cl. This effectively prevents LIC-ZrF 4 from being attacked by O atoms in LiNi 0 . 8 Co 0 . 1 Mn 0 . 1 (NCM811) and significantly suppresses the interface side reactions. The in situ formed LiF-containing layer further enhances the interface stability. The assembled ASSB (NCM811/LIC-ZrF 4 /LPSC/Li-In) exhibits a state-of-the-art capacity retention (96.7%@500cycles@1C; 80.7%@1600 cycles@2C). Furthermore, the ionic conductivity of LIC-ZrF 4 is also enhanced from 0.6 to 1.5 mS cm −1 while the electronic conductivity is decreased from 3.66 × 10 −8 to 8.39 × 10 −9 S cm −1 . This work highlights the crucial role of s-p-d hybridization on the electron localization regulation and the interface stability, and presents some distinct insights into developing high-performance halides-based ASSBs.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Yuanyuan Wu,Yuhui Sun,Bozhen Li,jihui Lang,Guangbo Che,Xingjing Zhang,Chunbo Liu
Water splitting requires the development of efficient and economical materials that catalyze hydrogen evolution reaction (HER) in diverse and complex environments. At present, HER in multi-environment mainly relies on noble metal catalysts, because the tolerance of non-noble metals is greatly limited under acidic conditions. In this study, we report the synthesis of sulfur (S)-anion-doped rhenium diboride (ReB 2 ) nanosheets using a molten salt-assisted method. This novel approach facilitates the uniform incorporation of S anions into the ReB 2 lattice. This leads to enhanced electrocatalytic activity. The resulting S-doped ReB 2 nanosheets exhibit superior performance with remarkable activity and stability across a wide pH range in HER. Specifically, overpotential of 144 mV, 158 mV, and 139 mV (1.0 M KOH) are required in 1.0 M PBS, 0.5 M H 2 SO 4 , and 1.0 M KOH, respectively, to achieve a current density of 10 mA/cm 2 . with long-term durability over 50 h in all three media. Due to their unique porous structure, the nanosheets exhibit a large electrochemical active area, exposing more active sites, promoting the diffusion of electrolyte and the generation and release of gas bubbles on the catalyst surface, and they can be used as efficient bifunctional electrocatalysts for overall water splitting. In addition, the introduction of anion S effectively regulates the electronic structure of Re, thereby enhancing the catalytic reaction kinetics and intrinsic catalytic performance.
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LAB ON A CHIP
·
2025
·
IF 5.4
Xuechi Yin,Jingxin Hou,Jiayi Zhang,Yumiao Jian,Nosirjon Sattorov,Xinnan Liu,Jianlong Wang,Qingyu Yang,Daohong Zhang,Ibrahim A. Darwish
Salmonella typhimurium (S. typhimurium) is a major foodborne pathogen, posing significant public health risks and leading to substantial economic losses. Traditional lateral flow immunoassay (LFIA) technology for foodborne pathogen detection faces limitations, such as the challenging and costly process of screening paired antibodies. To address these issues, we developed an innovative label-free LFIA utilizing carboxyl-functionalized Fe3O4 nanoparticles for sensitive detection of S. typhimurium. Fe3O4 nanoparticles offer unique properties, including magnetic separation and peroxidase-like catalytic activity, which enhance both bacterial capture and colorimetric signal amplification. The proposed label-free magnetic separation LFIA (LFMS-LFIA) achieved a detection limit of 103 cfu mL−1 for S. typhimurium using catalytic signal amplification, with a sensitivity 10 times greater than that achieved with colorimetric signal alone. This approach demonstrates promising application potential in S. typhimurium contamination detection in samples such as drinking water, eggs, and skim milk. By utilizing probes that integrate efficient binding, magnetic enrichment, and signal amplification capabilities, this Fe3O4-enhanced LFIA represents a major advancement in S. typhimurium detection with high sensitivity and without the need for complex equipment. This work offers a cost-effective and highly sensitive solution in portable devices of food safety and environmental monitoring fields for the on-site detection of pathogens.
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
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IF 6.97
Yang Bai,Yanbiao Zhao,Weidong Li,Linghui Meng,Yongping Bai,Guorong Chen
Solid sulfide electrolyte has been researched for several years, and a high ionic conductivity has been acquired. However, it is difficult to apply in industrial manufacturing partly because the raw materials, such as SiS2, GeS2, P2S5, et al., have strict preparing conditions and are sensitive to water and oxygen in the air. Herein, we report a new method to produce solid sulfide electrolytes Li9.54Si1.74P1.44S11.7X0.3 (LSiPSX) (X = F, Cl, Br, I), that is, using elementary substances Si, P, and S as the starting raw materials, which not only is a promising way to ease the harsh storage conditions of the SiS2 and P2S5 as starting raw materials but also provides a feasible choice for the preparation of solid sulfide electrolyte. The conductivity of solid sulfide electrolyte is further adjusted by controlling the particle size of raw material silicon and the different halogen doping. As a result, the Li9.54Si1.74P1.44S11.7I0.3 releases the highest ionic conductivity of 1.35 mS/cm at room temperature and a wide electrochemical window up to 9 V versus Li/Li+ which is prepared from the 3 nm particle size Si and I doping. The all-solid-state lithium–sulfur battery (ASSLSB) is constructed with LSiPSI and with a good performance. Our study demonstrates the possibility of preparing the LGPS crystal type solid sulfide electrolytes by using elementary substances.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2018
·Vol. 42
·期 5
·3350-3355
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IF 3.201
Ailijiang Abudurusuli,Kui Wu,Shilie Pan
Four new quaternary chalcogenides A2Ba7Sn4Q16 (A = Li, Na; Q = S, Se) were successfully synthesized in vacuum-sealed silica tubes for the first time. All of them crystallize in the noncentrosymmetric (NCS) cubic I3d space group with the cell parameters ranging from 14.807 to 15.4163 Å and Z = 4, respectively. Interestingly, their isostructures are different from the structural transformations (from tetragonal to trigonal) appearing in previously reported Na2BaSnQ4 compounds. As observed in their structures, (Na/Ba)Q4 and SnQ4 units alternately connect with each other by sharing corners to build a three-dimensional (3D) framework structure with charge-balanced Ba cations located within tunnels, which is different from the observation that the Na atoms located inside the tunnels formed by the interconnection of the BaS8 and SnS4 units in Na2BaSnS4. Optical properties (diffuse-reflection, IR, and Raman spectra) were also systematically studied and the results indicate that their optical bandgaps are in the range from 1.75 to 2.5 eV. Moreover, the second harmonic generation (SHG) responses of the title compounds were also measured to be about 0.1–0.5 times higher than that of benchmark AgGaS2 under 2.09 μm radiation.
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ELECTROCHIMICA ACTA
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2019
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IF 5.383
Yiqi Wei,Yinglin Yan,Yiming Zou,Mangmang Shi,Qijiu Deng,Nana Zhao,Juan Wang,Caiyin You,Rong Yang,Yunhua Xu
The sulfonic acid group exhibits considerable ion affinity. The present work therefore synthesizes, a core-shell composite material having a sulfonated polyaniline shell, and a bamboo-derived porous carbon core loaded with sulfur. The thin, homogeneous shell has a thickness of approximately 20 nm. This composite is employed as a cathode material in Li-S batteries and the electrochemical properties of these devices are systematically investigated. This cathode (containing 64.0 wt% S) exhibits a higher initial discharge capacity (1484 mAh g −1 at 0.1 C), improved cycling stability (853 mAh g −1 after 100 cycles at 0.1 C), and remarkable rate performance (810.2, 682.7 and 353.0 mAh g −1 at 2, 3 and 5 C, respectively). These values are superior to those obtained using a polyaniline shell. Electrochemical impedance spectroscopy and density functional theory calculations are used to elucidate the internal mechanisms of the sulfonated polyaniline shell during cycling. The calculated results demonstrate that the shell possesses extremely high electron and Li ion conductivities, and so enhances the redox reaction kinetics during long-term cycling. It also physically confines and chemically anchors polysulfides , thus limiting the shuttle effect. This cathode design is expected to assist in the future commercialization of Li-S batteries.
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ACS Applied Materials & Interfaces
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2016
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IF 7.145
Chao-Ying Fan,Hai-Yan Yuan,Huan-Huan Li,Hai-Feng Wang,Wen-Liang Li,Hai-Zhu Sun,Xing-Long Wu,Jing-Ping Zhang
In this work, the lightweight and scalable organic macromolecule graphitic carbon nitride (g-C3N4) with enriched polysulfide adsorption sites of pyridinic-N was introduced to achieve the effective functionalization of separator at the molecular level. This simple method overcomes the difficulty of low doping content as well as the existence of an uncontrolled form of nitrogen heteroatom in the final product. Besides the conventional pyridinic–N-Li bond formed in the vacancies of g-C3N4, the C–S bond was interestingly observed between g-C3N4 and Li2S, which endowed g-C3N4 with an inherent adsorption capacity for polysulfides. In addition, the microsized g-C3N4 provided the coating layer with good mechanical strength to guarantee its restriction function for polysulfides during long cycling. As a result, an excellent reversible capacity of 840 mA h g–1 was retained at 0.5 C after 400 cycles for a pure sulfur electrode, much better than that of the cell with an innocent carbon-coated separator. Even at a current density of 1 C, the cell still delivered a stable capacity of 732.7 mA h g–1 after 500 cycles. Moreover, when further increasing the sulfur loading to 5 mg cm–2, an excellent specific capacity of 1134.7 mA h g–1 was acquired with the stable cycle stability, ensuring a high areal capacity of 5.11 mA h cm–2. Besides the intrinsic adsorption ability for polysulfides, g-C3N4 is nontoxic and mass produced. Therefore, a scalable separator decorated with g-C3N4 and a commercial sulfur cathode promises high energy density for the practical application of Li–S batteries.
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ACS Nano
·
2019
·
IF 13.903
Yuanjian Li,Chong Wang,Wenyu Wang,Alex Yong Sheng Eng,Mintao Wan,Lin Fu,Eryang Mao,Guocheng Li,Jiang Tang,Zhi Wei Seh,Yongming Sun
Rechargeable lithium–sulfur batteries have attracted tremendous scientific attention owing to their high energy density. However, their practical application is greatly hindered by the notorious shuttling of soluble lithium polysulfide (LPS) intermediates with sluggish redox reactions and uncontrolled precipitation behavior. Herein, we report a semiliquid cathode composed of an active LPS solution/carbon nanofiber (CNF) composite layer, capped with a carbon nanotube (CNT) thin film decorated with metallic Mo nanoclusters that regulate the electrochemical redox reactions of LPS. The trace amount (0.05 mg cm–2) of metallic Mo on the CNT film provides sufficient capturing centers for the chemical immobilization of LPS. Together with physical blocking of LPS by the compact CNT film, free diffusion of LPS is significantly restrained and the self-discharge behavior of the Li–S cell is thus effectively suppressed. Importantly, the metallic Mo nanoclusters enable fast catalytic conversion of LPS and regular deposition of lithium sulfide. As a result, the engineered cathode exhibits a high active sulfur utilization (1401 mAh g–1 at 0.1 C), stable cycling (500 cycles at 1 C with 0.06% decay per cycle), high rate performance (694 mAh g–1 at 5 C), and low self-discharge rate (3% after 72 h of rest). Moreover, a high reversible areal capacity of 4.75 mAh cm–2 is maintained after 100 cycles at 0.2 C for a cathode with a high sulfur loading of 7.64 mg cm–2. This work provides significant insight into the structural and materials design of an advanced sulfur-based cathode that effectively regulates the electrochemical reactions of sulfur species in high-energy Li–S batteries.
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JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2026
·
IF 5.9
Yong-Hu Ma,Zi-Yi Gao,Ying-Hong La,Fu Ma,Hong-Jian Zhao
First SnS 2 /Bi(C 2 O 4 )OH heterojunction via one-step hydrothermal method. • Sn–S–Bi bonds induce IEF for S-scheme charge transfer. • Oxygen vacancies and S-scheme synergy enhance redox ability and resist photocorrosion. • 94.3% TCH (15 mg/L) degraded in 30 min, 231-fold vs. SnS 2 . • 97.9% RhB (30 mg/L) degraded in 60 min, 17.2-fold vs. SnS 2 . This study reports the first construction of an S-scheme SnS 2 /Bi(C 2 O 4 )OH heterojunction via a one-step hydrothermal route. Combined X-ray diffraction (XRD) and Fourier transform infrared (FTIR) analyses confirm strong interfacial coupling rather than physical mixing, while scanning electron microscopy (SEM) reveals a distinctive “snow-on-petals” morphology, with SnS 2 nanoparticles uniformly dispersed on Bi(C 2 O 4 )OH nanosheets. X-ray photoelectron spectroscopy (XPS) further confirms the presence of Sn–S–Bi interfacial bonds, accompanied by localized electron redistribution, laying the chemical foundation for S-scheme charge transfer. Electron paramagnetic resonance (EPR) analysis reveals a notable increase in oxygen vacancy content. This enrichment of oxygen vacancies, together with the chemical bonding at the S-scheme heterojunction interface, synergistically suppresses SnS 2 photocorrosion. Ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS) shows substantially improved visible-light harvesting, and electrochemical impedance spectroscopy (EIS) and photocurrent measurements corroborate superior charge separation and transport efficiency. Interestingly, although the specific surface area of the composite (35.44 m 2 /g) is lower than that of pristine SnS 2 (103.24 m 2 /g), the composite exhibits markedly higher photocatalytic activity, indicating that the enhancement arises from interfacial charge transfer and electronic modulation rather than from surface area alone. Consequently, the 30%SnS 2 /Bi(C 2 O 4 )OH composite achieves 93.4% removal of tetracycline hydrochloride (15 mg L −1 ) within 30 min and 97.9% removal of rhodamine B (30 mg L −1 ) within 60 min, with apparent rate constants of 231 and 17.2 times those of pure SnS 2 . Radical scavenging tests identify ·O 2 − and h + as the dominant reactive species, while total organic carbon (TOC) analysis indicates a mineralization rate of 77.1% for TCH, confirming deep oxidation beyond mere decolorization. Coupled with liquid chromatography–mass spectrometry (LC–MS) elucidation of the degradation pathway, this work offers a new paradigm for the rational design of high-performance S-scheme heterojunctions through interfacial chemical bonding and defect engineering. Graphical : Photocatalytic Degradation Mechanism. Download: Download high-res image (243KB) Download: Download full-size image
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JOURNAL OF ELECTRONIC MATERIALS
·
2026
·
IF 2.8
Yan Gang,Wang Rui,Yin Cuiwei,Zhao Qi,Cao Xuzheng,Zhang Hao,Shi Hongfei
An effective approach to eliminating organic pollutants is to develop step-scheme (S-scheme) heterojunction photocatalysts, because such heterojunctions can effectively promote photogenerated carrier separation while maximally retaining strong redox capability. Herein, S-scheme Bi 2 S 3 /BiOI (BBS) photocatalysts were synthesized using the in situ ion exchange method. Morphology and structure of BBS, as well as its photoelectrochemical properties, among others, were studied and analyzed. The photocatalytic activity of BBS was evaluated by degrading formaldehyde (HCHO) and methyl orange (MO). Compared with BiOI and Bi 2 S 3 , BBS catalysts demonstrated a remarkable improvement in photocatalytic performance under irradiation with visible light ( λ > 400 nm). With the highest photocatalytic efficiency, BBS-0.01 achieved degradation rates of 80% for HCHO (0.16 mg L −1 ) in 90 min and 97% for MO in 210 min. This notable enhancement in photocatalytic performance is attributed to the in situ ion exchange method, which constructs heterojunctions with intimate interfacial contact, uniform component distribution, high carrier separation efficiency, abundant active sites, and excellent stability. Furthermore, the S-scheme heterostructure further enhances catalytic performance owing to its well-matched energy band structures, efficient carrier separation, and the combined effect with the internal electric field (IEF). In addition, BBS photocatalysts exhibit a stronger visible-light response capability, consequently enhancing the overall photocatalytic efficiency. Hence, the BBS heterojunction photocatalyst presented in this work is a highly promising material for environmental applications under visible light. Graphical
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