Small
·
2019
·Vol. 15
·期 9
·1804861
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IF 10.856
Liang Cao,Bao Zhang,Xing Ou,Chunhui Wang,Chunli Peng,Jiafeng Zhang
Metal sulfides possess tremendous potentials owing to their high specific capacity for sodium storage. However, the huge volume expansion, accompanied with structural collapse and unsatisfied electric conductivity upon continuous cycling, always lead to inferior rate capability and severe cycling fading. In this work, binary metal sulfide (ZnS/SnS 2 ) nanoboxes confined in N/S dual-doped carbon shell (ZSS@NSC) are fabricated through a facile co-precipitation method involving the wrapping of polypyrrole, and subsequent in situ sulfidation process. Such a well-designed heterogeneity between ZnS and SnS 2 provides rapid Na + insertion and enhanced charge transport by creating an electric field at the heterointerface. More significantly, the formation of polypyrrole-derived N/S dual-doped carbon is synergistically coupled with the ZnS/SnS 2 to create a unique and robust architecture, further strengthening the interconnect function at the heterointerface, which improves electric/ion transfer and mitigates the volume variation during the long-term cycling process. Herein, this as-prepared ZSS@NSC exhibits satisfied specific capacity, excellent rate property, and superior cyclic stability (a reversible capacity of 456.2 mAh g −1 with excellent capacity retention of 97.2% after 700 stable cycles at ultrahigh rate of 5 A g −1 ). The boosted Na-storage properties demonstrate that the optimized strategy of structure-engineering has a broad prospect to promote energy storage applications.
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高影响因子
Journal of Energy Chemistry
·
2020
·
IF 7.216
Ruihan Zhang,Maochun Wu,Xinzhuang Fan,Haoran Jiang,Tianshou Zhao
Currently, lithium-sulfur (Li-S) batteries still suffer from fast capacity decay, poor coulombic efficiency (CE) and short cycling lifespan, which result from the severe shuttle effect issue caused by high solubility and rapid diffusion of lithium polysulfides (LiPSs) in organic electrolytes. Here, yolk-shell zinc oxide (YS-ZnO) spheres are synthesized and for the first time, applied as a host for Li-S batteries to tackle this challenge. The polar ZnO exhibits high chemical anchoring ability toward LiPSs while the unique yolk-shell structure not only provides an additional physical barrier to LiPSs but also enables much more uniform sulfur distribution, thus significantly suppressing LiPSs shuttling effect meanwhile promoting sulfur conversion reactions. As a result, the YS-ZnO enables the Li-S battery to display an initial specific capacity of 1355 mAh g −1 and an outstanding capacity retention capability (~89.44% retention rate) even after 500 cycles with the average CE of ~99.46% at the current of 0.5 C. By contrast, the capacity of conventional-ZnO-nanoparticles based battery severely decays to 472 mAh g −1 after cycling for 500 times. More impressively, the S/YS-ZnO based Li-S battery can maintain a low decay rate of 0.040% every cycle and high average CE of 98.82% over 1000 cycles at 3 C.
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Journal of Materials Chemistry A
·
2021
·Vol. 9
·期 39
·22684-22690
·
IF 12.732
Di Yu,Qian Zhang,Jie Liu,Ziyang Guo,Lei Wang
High-loading sulfur electrodes play a crucial role in the practical application of Li–S batteries. However, the poor mechanical stability and sluggish Li-ion conduction severely hinder the cycling stability and rate property of high-loading sulfur electrodes. PVDF binder has been widely used in Li–S batteries, while the coating process using PVDF binder requires toxic and expensive NMP solvent and the poor mechanical property of PVDF binder makes it incompetent as the binder for high-loading Li–S batteries. Herein, we use strong-affinity alginic acid (Alg) and high-wettability, high-modulus isosorbide (IS) to produce an environmentally friendly c-Alg-IS network binder via a condensation reaction for a high-loading sulfur electrode. As a result, a Li–S battery with a c-Alg-IS binder showed dramatically improved cycling stability and rate performance under high sulfur loading; especially, when the sulfur loading increases to 9.1 mg cm−2, the Li–S battery exhibits a stable cycling life of 60 cycles and high areal capacity of 7.2 mA h cm−2 at 2.4 mA cm−2. This work provides a simple and effective strategy to address the issues of poor cycling stability and rate property of high-loading Li–S batteries.
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ChemCatChem
·
2020
·Vol. 12
·期 18
·4618-4624
·
IF 4.853
Ying Zhang,Guojing Hu,Jing Li,Xingqun Zhu,Ping Liu,Bin Xiang
Searching a low-cost and excellent performance catalyst for hydrogen evolution reaction (HER) is important for enhancing the efficiency of water splitting. In this manuscript, we report the Co, S co-doped carbon-framework supported MoO 2 nanosheets (Co, S/MoO 2 −C) for HER. The carbon-framework improves the distribution of the MoO 2 , which causes a large number of exposed active sites. The synergistic effect of Co and S enhances the electron transport of the MoO 2 . As a result, the Co, S/MoO 2 −C exhibits a low overpotential (62 mV vs . RHE) and enhanced stability in 1 M KOH for HER. Our work puts forward a novel method to improve the catalytic performance of MoO 2 and provides a new option to prepare excellent catalysts. Graphical Synergistic effect : The Co, S co-doped carbon-framework supported MoO 2 (Co, S/MoO 2 −C) catalyst is prepared by hydrothermal reaction and vulcanization. The carbon-framework improves the distribution of the MoO 2 , which causes a large number of exposed active sites. The synergistic effect of Co and S enhances the electron transport of the MoO 2 . Therefore, the Co, S/MoO 2 −C exhibits a low overpotential (62 mV vs . RHE) in 1 M KOH for HER.
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2025
·
IF 4.6
Mingming Dong,Shuyong Yang,Peng Zhou,Yue Gao,Anshun Wang,Shenghui Tu
The accumulation of antibiotics in aquatic ecosystems poses a serious threat to the environment and to human health. Tetracyclines (TC) account for a significant proportion of antibiotic residues worldwide. In order to overcome the limitations of conventional degradation methods, we created a three-component S-scheme heterojunction consisting of BiVO 4 /MWCNTs@NH 2 -UiO-66 (Zr) using a two-step solvothermal process. This synergistic integration utilises: (i) MWCNTs as electron transport bridges; (ii) NH 2 -UiO-66 (Zr) for high TC adsorption (surface area of 931.86 m 2 g −1 ); and (iii) BiVO 4 for visible light harvesting. This architecture broadens light absorption, reduces charge recombination and enables dual-pathway Reactive Oxygen Species (ROS) generation. Under visible light, the optimised catalyst achieves 95.2 % TC degradation within 90 min–7.73 times faster than pristine BiVO 4 (k = 0.02721 vs. 0.00352 L mg −1 ·min −1 ). Radical trapping and EPR analyses confirm ·O 2 − and h + as the dominant species, while LC-MS reveals three degradation pathways. With 85.3 % activity retention after five cycles, this work provides a blueprint for the design of efficient, antibiotic-mineralising photocatalysts.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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IF 9.1
Zipeng Jin,Junhua Wang,Kunting Li,Taibao Xiao,Wa Gao,Lei Xu,Siqi Bao,Baiyan Li
Achieving efficient charge transfer and separation relies on constructing effective electron-transfer channels tailored to composite photocatalysts. Herein, an S-scheme heterojunction was constructed between g-C 3 N 4 and covalent triazine frameworks (CTFs) to establish a directional internal electric field (IEF). The effects of donor (D) chain extension and increased acceptor (A) number on intramolecular electron transport was conducted. DFT calculations and photoelectrochemical tests indicated that, with the stepwise structural evolution from A1-D-A1 (CTF-1) to A1-D-D-A1 (CTF-2) and further to A1-D-A2-D-A1 (CTF-Azo), the electron density within the CTFs framework gradually increased. When integrated into the S-scheme heterojunction, this concerted structural engineering created an electron-rich interface that efficiently channeled electrons to adsorbed oxygen, yielding a 1.89-fold enhancement in·O 2 − generation compared to g-C 3 N 4 . This rational design enabled 1 wt% CTF-Azo/g-C 3 N 4 to achieve 92% degradation of Levofloxacin (LVX) within 120 min under visible light irradiation and demonstrated a 2.61-fold improvement over g-C 3 N 4 along with deep mineralization. A plausible photocatalytic degradation pathway was proposed, and toxicity evaluation confirmed a reduced ecological risk of the generated intermediates. Moreover, 1 wt% CTF-Azo/g-C 3 N 4 demonstrated robust performance in various complex water systems, highlighting its practical potential. This work demonstrates that orchestrating D-A molecular motifs with S-scheme heterojunctions offers a powerful paradigm for precision electron steering toward efficient antibiotic photodegradation.
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高影响因子
RARE METALS
·
2026
·Vol. 45
·期 7
·e70439
·
IF 12.1
Jinyong Hu,Songming Dou,Xinyao Liu,Bohao Liu,Xiongxiong Xue,Yong Zhang
en This link goes to a English section zh This link goes to a Chinese section Light-activated gas sensors hold significant potential in environmental monitoring and smart Internet of Things (IoT) owing to their advantage in room temperature operation. Nevertheless, due to a narrow light absorption range, high photocarrier recombination rate, and weak redox activity of the sensing material, the performance enhancement of the current light-activated gas sensors is still impeded. Herein, a full-spectrum solar light–activated gas sensor is designed based on W 18 O 49 /Ag 2 S nanocomposites with an S-scheme heterostructure for the highly sensitive detection of NO 2 at room temperature. Under solar light illumination, the gas sensor exhibits a high response of 430.84% to 1 ppm NO 2 , which is over 11 times higher than that based on pristine W 18 O 49 or Ag 2 S components. Moreover, the sensor demonstrates excellent repeatability fast response/recovery times (5/3 s), low limit of detection (50 ppb), high selectivity, and satisfactory long-term stability. The enhanced sensing performance might arise from the broadened light-harvesting capability and the unique charge carrier transfer mechanism in the S-scheme heterostructure. A Bluetooth-enabled portable monitoring system is further developed to achieve real-time NO 2 monitoring and wireless visualization. This work provides theoretical insights and experimental validation for the effectiveness of S-scheme heterostructure in enhancing room-temperature gas-sensing performance, demonstrating the prospective application potential for IoT-related environmental monitoring. 摘要 en This link goes to a English section zh This link goes to a Chinese section 光激活气体传感器因其室温工作的优势 , 在环境监测和智能物联网 领域具有重要潜力。然而 , 由于传感材料的光吸收范围窄、光生载流子复合速率高以及氧化还原活性较弱 , 目前光激活气体传感器的性能提升仍受到阻碍。本研究设计了一种基于W 18 O 49 /Ag 2 S纳米复合材料的全光谱太阳光激活气体传感器 , 该材料具有S型异质结构 , 可在室温下高灵敏检测NO 2 。在太阳光照射下 , 该气体传感器对1 ppm NO 2 的响应高达430.84% , 是纯W 18 O 49 或Ag 2 S组分的11倍以上。此外 , 该传感器展现出优异的可重复性、快速的响应/恢复时间 ( 5/3 s ) 、低检测限 ( 50 ppb ) 、高选择性以及令人满意的长期稳定性。 理论分析表明传感性能的增益源于S型异质结构中拓宽的光捕获能力和独特的载流子传输机制。在此基础上, 进一步开发了一套蓝牙便携式监测系统 , 实现了NO 2 的实时监测和无线可视化。本研究为S型异质结构有效增强气体传感性能提供了理论指导 和实验验证 , 为发展面向物联网应用的高灵敏室温气体传感器提供了重要技术支撑。
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Yuxiang Deng,Zhenyu Cai,Libo Yang,Zhiyao Wu,Bihong Chen,Chang Gao,Xinyu Yu,Nannan Wang,Xinpeng Wang
3DOM-TiO 2 /CuO S-scheme heterojunction synthesized via hard templating • Removes 99.06% U(VI) in 120 min; capacity of 1751.33 mg/g • Dynamic Cu valence change & O-vacancy evolution restrain charge recombination. • In situ multi-spectra & DFT reveal charge transfer and U(VI) reduction mechanism. Photocatalysis offers a sustainable approach for uranium-containing wastewater remediation, yet conventional materials still suffer from limited solar-light utilization and rapid charge recombination. Herein, a three-dimensional ordered macroporous TiO 2 /CuO composite (3DOM-TC) was synthesized using resorcinol–formaldehyde resin spheres as a hard template. The ordered macroporous TiO 2 framework enables slow-photon-assisted light harvesting and multiple light scattering, while CuO coupling broadens the light-response range and constructs an S-scheme TiO 2 /CuO heterojunction to promote directional charge separation. Meanwhile, oxygen vacancies mainly serve as electron-trapping and O 2 /intermediate adsorption–activation sites, which are coupled with the dynamic Cu 2+ /Cu + variation during photocatalysis. As a result, 3DOM-TC achieves 99.06% U(VI) removal within 120 min, corresponding to a maximum extraction capacity of 1751.33 mg/g. Photoelectrochemical tests confirm enhanced photocurrent density and efficient interfacial charge transport compared with pristine TiO 2 . In situ EPR, XPS, and DFT calculations reveal the photoinduced charge-transfer pathway and illumination-enhanced oxygen-vacancy signals. Moreover, in situ FTIR spectroscopy confirms that photogenerated ·O 2 − can further convert to H 2 O 2 -related species, thereby promoting U(VI) precipitation as (UO 2 )O 2 ·4H 2 O. This work highlights the synergistic integration of 3DOM-enabled light harvesting, S-scheme charge separation, and vacancy-assisted electron transfer and O 2 activation, providing a promising strategy for efficient photocatalytic U(VI) sequestration. Download: Download high-res image (232KB) Download: Download full-size image
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高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
·
IF 8.8
Hao Chen,Libin Wang,Haoji Lao,Qin wang,Guyu Xiao
The anionic or cationic aromatic polymers coating membranes are antifouling, but their rejection for MgSO 4 is low. In this work, soluble sulfonated poly(arylene ether ketone)s (sPAEKs) in commonly polar solvents is synthesized by incorporating methyl side groups. Such sPAEKs thus could be coated on commercial ultrafiltration membranes to make the sPAEKs coating membranes without damaging the pore structure of ultrafiltration supports. On this basis, quaternized polysulfone (qPSF) is coated on the sPAEKs layer to prepare the anionic/cationic polymers crosslinked membranes. This ionic crosslinking between the anionic and cationic polymer layers remarkably reduces the molecular weight cut-off of the coating membranes. The hydrophilic charged coating layers are also favorable for antifouling and enhancing permeation flux. In addition, the aromatic backbones of sPAEKs and qPSF are beneficial for improving chlorine resistance. As a result, the as-made membranes exhibit excellent nanofiltration performances. For example, one of them shows a permeation flux of 10.3 LMH/bar, a MgSO 4 rejection of 98.2%, a flux recovery rate (FRR) of 98.6% for bovine serum albumin. It also displays high rejection for MgSO 4 after 40,000 ppm·h of continuous exposure to NaClO solution. High-performance nanofiltration membranes are fabricated by successive bilayer coating of aromatic polyanions and polycations on ultrafiltration supports for the first time, this strategy shows significant application prospects.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Qiuyu Wang,Maoyuan Hu,Wanke Zhou,Junchun Guo,Sheng Li,Xiaoli Xiong,Jinglin Li
ZIF-derived N,P,S-HCNFs provide a porous electroactive interface for TBHQ sensing. • Single- and dual-doped controls with DFT support cooperative heteroatom regulation. • Two linear ranges of 0.9–12 and 12–127 μM were achieved with a 0.075 μM LOD. • Reliable TBHQ quantification was demonstrated in spiked edible-oil samples. • Extra Trees enables validated auxiliary calibration in complex oil matrices. Tert-butylhydroquinone (TBHQ) is a widely used synthetic phenolic antioxidant, and its excessive use in edible oils raises food-safety concerns. Herein, N, P, and S tri-doped hollow carbon nanofibers (N,P,S-HCNF) with interconnected porous channels were fabricated via an electrospinning–pyrolysis strategy. The hollow architecture and heteroatom-induced defects provide abundant electroactive sites and facilitate electron/mass transfer, enabling sensitive electrochemical oxidation of TBHQ. The N,P,S-HCNF/CP sensor exhibited two linear response ranges of 0.9–12 μM and 12–127 μM, with a detection limit of 0.075 μM. Acceptable selectivity, reproducibility, and storage stability were obtained. Single- and dual-doped controls combined with DFT calculations provided mechanistic insight into the enhanced TBHQ adsorption and interfacial electron transfer of N,P,S-HCNF, including preferential interactions involving the phenolic hydroxyl groups. An externally validated Extra Trees calibration model was further employed as an auxiliary strategy to reduce matrix-related prediction bias, integrating hollow carbon nanofiber engineering, multielement heteroatom regulation, mechanistic analysis, and data-driven quantification for TBHQ electrochemical determination in edible oils. A defect-rich N,P,S-doped hollow carbon nanofiber interface enabled sensitive electrochemical oxidation of TBHQ, while DFT supported favorable adsorption and interfacial charge redistribution and machine learning provided auxiliary calibration for improved quantification in edible-oil matrices. Download: Download high-res image (128KB) Download: Download full-size image
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高影响因子
RENEWABLE ENERGY
·
2026
·
IF 9.1
Huage Lin,Weiyan Su,Yihan Tang,Jiaxiang Zong,Guangyu Wu,Weinan Xing
The scalable synthesis of green chemical fuels via artificial photosynthesis represents a cornerstone strategy for buffering intermittent renewable energy and advancing global carbon neutrality. However, the practical engineering deployment of this technology is severely constrained by suboptimal solar-to-fuel conversion efficiencies at the catalytic interface. Herein, a tubular S-scheme Co 2 (OH)PO 4 @CN (CoHP@CN) heterojunction was fabricated via a pre-coordination-mediated in-situ growth strategy to facilitate solar energy harvesting. Characterizations reveal that a directional internal electric field (IEF) drives an S-scheme charge pathway, significantly reducing transfer resistance while preserving strong redox capabilities. Benefiting from these kinetic features, the heterojunction delivers exceptional solar fuel production performance, achieving a CO yield of 383.40 μmol g −1 (over 4 h) and H 2 evolution of 4657.40 μmol g −1 (within 2 h). This study underscores the power of precise interface engineering in modulating charge dynamics, offering practical insights for scalable solar-to-chemical energy storage and renewable energy deployment.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Ping Liang,Shuai Shao,Xiaocan Liu,Ziwen Zhang,Dandan Wang,Weiye Yang,Lijian Meng,Junfeng Zhang,Shihua Zhao
This study reports the construction of a g-C₃N₄/ZnTiO₃/BiOI ternary heterojunction photocatalyst for the efficient degradation of organic dyes. The optimized g-C₃N₄/ZnTiO₃/BiOI composite with a mass ratio of 1:1:2 exhibited excellent photocatalytic activity toward Rhodamine B (RhB), achieving nearly complete degradation within 40 min at pH 11, with an apparent rate constant of 0.05114 min⁻¹ . The composite also showed photocatalytic degradation ability toward methylene blue (MB) and methyl orange (MO), as well as satisfactory performance in different real water matrices, demonstrating its broader applicability. Structural and surface analyses confirmed the successful formation of the ternary composite, while BET results indicated that the retained mesoporous structure facilitated reactant diffusion and interfacial mass transfer. UV–vis DRS revealed an extended light absorption range beyond 600 nm, and photoelectrochemical measurements demonstrated reduced charge-transfer resistance and enhanced separation and migration of photogenerated carriers. Radical trapping and EPR analyses identified ¹O₂ and •OH as the dominant reactive species. After five cycles, the RhB degradation efficiency remained above 90%, indicating good stability. Combined with Mott–Schottky measurements, XPS analysis, work-function calculations, Bader charge analysis, and differential charge density results, a ZnTiO₃-mediated dual S-scheme charge-transfer mechanism was proposed. This work provides a feasible strategy for designing efficient ternary heterojunction photocatalysts for dye-contaminated wastewater treatment.
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危险品化学品经营许可证（带存储）