JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2025
·
IF 4.1
Kuan Shen,Yuqi Chen,Ming Li,Xingmei Guo,Siying Fan,Yafei Zhao,Zhao Xu,Yuanyuan Wang,Qinghong Kong,Junhao Zhang
Non-metallic carbonaceous catalysts for oxygen reduction reaction (ORR) hold great promise for applications in zinc-air batteries (ZABs). Their performance is substantially dictated by the type and quantity of heteroatoms doped within the carbon lattice. Herein, a novel polymerization-pyrolysis strategy is proposed to prepare N, P, S triply doped carbon nanosheets (NPS-C) and regulate the amount of doped atoms. The optimized sample showcases excellent ORR catalytic performance, featuring a half-wave potential of 0.81 V vs. RHE and high long-term stability. When employed as the cathode catalyst in primary ZABs, the resulting battery delivers a high peak power density of 157.9 mW cm −2 , along with high specific capacity and good rate capability. This work provides a simple and effective strategy for developing non-precious carbon-based electrocatalysts, offering new possibilities for enhancing the performance of energy storage and conversion devices.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Sirui Liu,Qianjin Ye,Qin Li,Zhanzhen Ma,Ran Yang,Di Li,Deli Jiang
Carbon nitride (CN) has received extensive interest due to their good stability and unique conjugated structures. However, the weak charge separation ability and poor active sites lead to undesirable photocatalytic CO 2 reduction activity. Here, we successfully prepare all-organic PTA/V C -CN S-scheme heterojunction photocatalysts by integrating CN with carbon vacancies (V C -CN) and perylene tetracarboxylic acid (PTA) for photocatalytic CO 2 reduction. The introduced carbon vacancies can act as electron trapping sites, break the symmetry structure of CN and facilitate in-plane photogenerated carrier separation and transfer of CN, while the coupling of PTA with V C -CN via π-π interaction to form a built-in electric field further speeds up the interfacial charge transfer, thereby collectively enhancing the separation and transfer efficiencies of photogenerated carriers. Moreover, the high reduction capability of V C -CN with carbon vacancies as possible active sites and wide-spectrum light absorption of PTA render the S-scheme heterojunction with high photocatalytic activity. The optimum PTA/V C -CN photocatalyst exhibits a high CO production rate of 47.91 μmol g −1 h −1 , which is about 10.7 and 4.2 times higher compared to those of CN and V C -CN, respectively. This work provides a new strategy for developing all-organic CN-based S-scheme heterojunction photocatalysts used in CO 2 conversion.
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Advanced Healthcare Materials
·
2025
·
IF 9.6
Chengyan Wang,Jiahui Zhu,Ling Lin,Jie Yu,Hao Xu,Jiangfeng Du,Zhanjun Gu,Xiu-wu Bian,Jing Hu,Gan Tian,Xiao Zhang
The effectiveness of cancer treatment has been significantly improved through combined therapies that synergistically utilize multiple treatment modalities. While combination strategy mitigates tumor resistance, enhances therapeutic efficacy, and reduces side effects compared to monotherapies, the precise coordination of treatment sequences and timing remains underexplored, particularly in the nanomaterial-based therapies. In this study, this gap is addressed by investigating the interaction between photodynamic therapy (PDT) and nitric oxide (NO) therapy, with a specific focus on the sequence in which these therapies are administered. An upconversion nanoplatform is designed with orthogonal dual-channel fluorescence properties, allowing for non-interfering NO release and PDT, which enables systematic exploration of the effects of treatment sequence on therapy efficacy. The results demonstrate that administering NO therapy prior to PDT yields superior antitumor effects compared to other sequences. This time-sequenced efficacy may be attributed to NO-induced S-nitrosylation, which disrupts the intracellular regeneration cycle of reduced glutathione, thereby sensitizing tumor cells to subsequent PDT.
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PubMed
高影响因子
Journal of Materials Chemistry A
·
2026
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IF 9.2
Tengfei Wang,Qing Pang,Boyu Liu,Kaimin Fan,Hongyu Wang
Phase interface engineering plays an essential role in the design and development of effective electromagnetic wave (EMW) absorption materials and energy storage devices. Nevertheless, the development of multifunctional materials that can simultaneously tackle these challenges remains a significant difficulty. In this study, we developed multifunctional defect-rich 1T/2H-WX2/RGO (X = S, Se) nanosheets utilizing a simple solvothermal and freeze-drying technique. The synthesized 1T/2H-WX2/RGO nanosheets exhibited superior EMW absorption and electrochemical characteristics. The effective absorption bandwidth (EAB) reached 7.68 GHz at a thickness of 3.10 mm. This excellent performance can be attributed to various loss mechanisms, including conductive loss, defect-induced dipole polarization loss and interface polarization loss. Moreover, the 1T/2H-WS2/RGO-15 nanosheets attained a high specific capacitance of 390.44 F g−1 at a current density of 1 A g−1. In contrast, the 1T/2H-WSe2/RGO-4 nanosheets demonstrated impressive cycling stability of 71.81% after 5000 cycles, which can be attributed to the active sites provided by its rich heterogeneous interface. The energy density of the 1T/2H-WS2/RGO-15 nanosheets was measured to be 4.27 Wh kg−1 at a power density of 400 W kg−1. This research offers valuable insights into the development of multifunctional materials that can serve as EMW absorbers and supercapacitor electrodes.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121666
·
IF 7.5
Jianjun Chen,Qian Zhao,Hongxing Shi,Ying Li,Limin Wang
The coexistence of cationic and anionic dyes in wastewater necessitates the development of amphoteric adsorbents. Herein, amphoteric hydrogel microspheres SA-S@PDA-H was successfully fabricated for their simultaneous removal. The microspheres were synthesized by crosslinking sodium alginate (SA) with Ca²⁺, followed by coating with polydopamine (PDA) and stearyl trimethyl ammonium chloride (STAC). The microspheres prepared through acid treatment to replace STAC was labeled SA-S@PDA-H, endowing the microspheres with enhanced adsorption capacity. FT-IR, SEM, zeta potential was utilized to characterize the structure and morphology of SA-S@PDA-H. The adsorption behavior and mechanism of SA-S@PDA-H for cationic and anionic dyes was investigated in depth. The results show SA-S@PDA-H exhibit 127.3 % of swelling ratio. The adsorption of SA-S@PDA-H for MB and MO reaches equilibrium at about 300 min followed by PSO model. The adsorption process of SA-S@PDA-H for MB and MO followed Temkin and Dubinin-Radushkevich model, respectively, and the maximum adsorption capacity displayed 869.1 mg/g at 45°C and 730.9 mg/g at 15°C, for MB and MO, respectively. MB adsorption increased with higher temperature and pH, while MO adsorption increased with lower temperature and pH. Adsorption of both dyes decreased at high ionic strength, and Cu 2 + and Fe 3+ had a significant inhibitory for MB than K + , while the inhibitory effects of SO 4 2- or CO 3 2- is more obvious for MO than Cl - . SA-S@PDA-H exhibited excellent adsorption performance for mixed cationic and anionic dyes through synergistic effects including electrostatic interactions, hydrogen bonds, π-π stacking and micropore filling. The microspheres maintained over 80 % removal efficiency after five consecutive adsorption-desorption cycles.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Qi Chen,Zefeng Yang,Yueling Chen,Jionghua Wu,Jimmy C. Yu,Ling Wu
More efficient N 2 activation and carrier dynamics are needed for effective solar-driven ammonia synthesis. Herein, a heterojunction photocatalyst (Co-ZnO/MIL-125(SH) 2 ) was constructed by using MIL-125(Ti) with sulfhydryl functionalization and Co-doped ZnO for photocatalytic nitrogen fixation. A series of characterization reveal that the formation of S-scheme charge transfer greatly enhances interfacial charge separation for more available carriers. The presence of Ti 3 + sites in MIL-125(SH) 2 also facilitates the adsorption and activation of N 2 , effectively leveraging the photogenerated electrons for N 2 conversion. Moreover, the introduction of Co-ZnO increases the hydrophilicity of the catalytic surface. This allows more water molecules to be oxidized by photogenerated holes to release H + for the N 2 hydrogeneration process. As a result, a high photocatalytic ammonia production rate of 50.8 μmol•g −1 •h −1 is achieved under visible light irradiation. This study presents an insight into engineering S-scheme heterojunction composite by coupling molecular coordinate activation and improved protons supply for efficient photocatalytic nitrogen fixation.
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Journal of Energy Storage
·
2026
·
IF 10.7
Dinh Chuong Nguyen,Thi Luu Luyen Doan,Trinh Ngoc Dat,Le Vu Truong-Son,Tien D. Tran,Ngo Thi My Binh,Van Din Nguyen,Soon-Gil Yoon,Lam Nguyen-Dinh
The synergy of appropriate geometrical structure design, the intrinsic properties of individual components, and multi-heteroatom doping engineering is greatly beneficial for improving the electrocatalytic activity of nanomaterials, thereby enhancing the performance of energy storage technologies. Herein, a highly efficient electrode material comprising KMnFe(CN) 6 Prussian blue analogue hollow spheres activated by Pt, Co, and S multi-dopants for boosting next-generation Zn-air batteries is reported. Benefiting from the promising intrinsic property, morphological features and multi-doping effect, the material exhibits exceptional electrochemical performance for the two half-reactions at the air cathode of Zn-air batteries, including the oxygen evolution reaction (OER) and oxygen reduction reaction (ORR). As expected, the assembled Zn-air batteries employing the proposed material as the cathode material demonstrate outstanding performance, achieving a high open-circuit potential of 1.40 V, a high power density of 188.7 mW cm −2 , and excellent rechargeability for 72 h of consecutive operation, comparable to state-of-the-art electrode materials containing Pt/C and RuO₂.
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Journal of Water Process Engineering
·
2026
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IF 6.6
Xiang Luo,Hongwei Chen,Hongjian Shen,Ling Zhang,Jinbo Chen,Shuai Liu,Bo Gao,Honglei Zhang,Yawei Gu
Zero-valent iron (ZVI) technology is regarded as one of the most efficient approaches for remediating groundwater contaminated with chlorinated hydrocarbons (CHCs). Despite its highly reactive nature, the corrosion of ZVI in aqueous solution readily results in surface passivation, which diminishes its reactivity. ZVI doped with heteroatoms such as carbon (C), nitrogen (N), and sulfur (S) has displayed excellent performance in trichloroethylene (TCE) degradation. Nevertheless, the effects of these heteroatoms on ZVI materials, along with their various degradation mechanisms, remains ambiguous. In this study, C-mZVI bm , N-mZVI bm , and S-mZVI bm were prepared, respectively, via a mechanochemical method and utilized for TCE degradation. The dechlorination reaction facilitated by each material was thoroughly investigated both theoretically and experimentally, focusing on TCE adsorption affinity, the dechlorination process, hydrogen evolution reaction (HER), electron efficiency, and lifetime. Among the three materials, S-mZVI bm exhibited 100% TCE removal in less than 24 h., as well as improved electron efficiency and lifetime, primarily attributed to its high TCE adsorption energy and the suppression of HER. These integrated theoretical and experimental results indicate that S-mZVI bm nanoparticles are a promising and innovative material for in situ groundwater TCE remediation.
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ACS Sustainable Chemistry & Engineering
·
2026
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IF 7.6
Hui Wang,Minyao Liu,Guangzhao Zhang,Yukun Chen,Yonggang Min,Jin Li
The propagation of lithium dendrites and the “shuttle effect” of polysulfide represent two critical challenges hindering the practical application of lithium sulfur batteries (LSBs). Herein, a dual-functional integrated Janus separator is proposed, which simultaneously inhibits the shuttle effect of polysulfide and lithium dendrites to enhance the electrochemical performance of LSBs. On the lithium metal anode interface, directional denaturation treatment was first applied to increase the α-helix content in soy protein isolate (SPI), yielding α-SPI with enhanced Li+ affinity. Phytic acid (PA) served simultaneously as cross-linker and acidity regulator, anchoring α-SPI nanoparticle onto carboxylated cellulose nanofibers (C–CNF). The resulting composite was uniformly sprayed onto the separator to construct a lithiophilic α-SPI@C–CNF framework, which homogenizes Li+ flux and suppresses lithium dendrite. At the cathode interface, the made-to-measure three-dimensional carbon (M-3DC) physically entraps lithium polysulfides and thus prevent the shuttle effect. Finally, the LSB using the Janus separator delivers a high initial capacity of 938 mAh g–1 and exhibits an excellent operation stability by retaining 537.8 mAh g–1 after 1000 cycles (with a capacity degradation rate of only 0.043% per cycle). This study presents a versatile approach to simultaneously mitigate the intrinsic limitations of both the lithium metal anode and the sulfur cathode in LSBs.
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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.
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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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.
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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
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材料科学
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半导体器件
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薄膜太阳能电池
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危险品化学品经营许可证（带存储）