APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Caicai Ran,Mang Lu,Linli Hou,Huanggen Yang,Limin Liu
Heterogeneous interface regulation acts a significant role in tailoring the intrinsic physicochemical property for achieving excellent photocatalytic H 2 evolution performance, which still faces a huge challenge. In this work, by comparing H 2 evolution property of various cadmium zinc sulphide (Cd x Zn 1−x S) solid solutions, 1-D Cd 0.9 Zn0 .1 S nanorods possessing the optimum photocatalytic H 2 evolution performance were obtained. Additionally, bimetallic metal organic framework (MOF)-derived NiFe 2 O 4 @C (NFO@C) microspheres with custom-built heterogeneous interface were successfully prepared via a solvothermal/pyrolysis strategy. Moreover, NFO@C microspheres were assembled on Cd 0.9 Zn0 .1 S surface to fabricate a series of NFO@C/Cd 0.9 Zn 0.1 S heterojunction photocatalysts with varied contents of NFO@C. The NFO@C/Cd 0.9 Zn 0.1 S heterojunction with a NFO@C content of 20 wt% (abbreviated as NC20) exhibited the highest H 2 production rate of 96.25 mmol g –1 h −1 , which was 3.8 times that of Cd 0.9 Zn 0.1 S. Under a light wavelength of 420 and 450 nm, the apparent quantum efficiency of NC20 reached 34.8 % and 65.1 %, respectively. The photocatalytic H 2 evolution activity of NC20 remained stable after the 16-h cycle experiment, whereas the severe photocorrosion of Cd 0.9 Zn 0.1 S was encountered. Furthermore, the easy recyclability of NC20 should not be overlooked. The results of a series of material characterization clearly demonstrate that the introduction of NFO@C could efficiently improve light absorption and the photoinduced carrier separation capability of the composite photocatalysts. This study not only opens up a facile and controllable preparation way for the synthesis of heterojunction structures with tailored heterogeneous interfaces, but also offers a new sight to ameliorate the H 2 evolution capability, stability and recyclability of Cd x Zn 1−x S solid solutions.
✓ 已验证
DOI
高影响因子
ChemElectroChem
·
2022
·Vol. 9
·期 15
·e202200474
·
IF 4.782
Fanxuan Xie,Man Xiong,Jiapeng Liu,Jingwen Qian,Tao Mei,Jinghua Li,Jianyin Wang,Li Yu,Jan P. Hofmann,Xianbao Wang
Graphical WS 2 @C nanoflowers modified polypropylene separator (WS 2 @C-PP) can effectively adsorb lithium polysulfides and catalyze their conversion on the adsorptive/electrocatalytic sites of WS 2 . The unique design of the carbon coating on the WS 2 maximizes the synergism of polarity and conductivity, benefiting the recycling of the active materials, while forming the uniform and stable modified layer. Featuring high theoretical capacity, environmental friendliness and low cost, lithium-sulfur (Li-S) batteries become promising alternatives to satisfy the growing demand for energy storage. To boost their energy density for practical application, modified separators are needed to suppress shuttle effects resulting from the solubility of lithium polysulfides (LiPSs). Herein, we modified traditional polypropylene (PP) separators with functional WS 2 @C nanoflower composites (WS 2 @C-PP). They can effectively adsorb LiPSs and catalyze their conversion on the edge sites of the WS 2 . Also, the unique construction of a carbon layer coating on the WS 2 nanoflowers combines active sites and conducting properties. The material benefits the reversibility of redox reactions and reutilization of active materials. With the WS 2 @C-PP separator, the cell displays improved cycling stability and rate performance. When cycling at 0.1 C, the cell discharges a capacity of up to 1475 mAh g −1 , and it contributes 943 mAh g −1 originally at 1 C, with a decay rate of only 0.07 % after 500 cycles. Our work highlights the potential of functional separators to advance the properties of Li-S batteries.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2014
·Vol. 5
·期 8
·5674-5679
·
IF 3.708
Gang Wang,Li Peng,Yaochen Zheng,Yanqin Gao,Xuedong Wu,Tianhui Ren,Chao Gao,Jin Han
We describe a novel triethylamine catalyzed S → O acetyl migration reaction for yielding thiol compounds under mild conditions through the formation of a transitional 5-membered ring. A series of epoxy compounds have been transformed into their thiol counterparts which could be used for construction of topological and functional sulfur-containing polymers. The one-pot two-step processes including the S → O acetyl migration and the following thiol-click reactions avoided separation of thiol intermediates. Applying these processes on a new-type latent polythiols overcomes crosslinking problem usually met in preparation of multithiol compounds due to the formation of disulfide bonds.
✓ 已验证
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
·
2020
·
IF 7.635
Jiahao Zou,Huajun Duan,Yongsheng Chen,Sa Ji,Jianfan Cao,Huiru Ma
In order to improve the flame retardancy while maintaining the excellent mechanical properties and heat resistance of epoxy resin, a novel P/N/S-containing high efficiency flame retardant named TAP was designed and synthesized by a simple one-pot reaction among 2-thenaldehyde, 2-aminobenzothiazole (ABZ) and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO). The chemical structure of TAP was characterized by Fourier transform infrared (FTIR) spectroscopy, 1 H and 31 P nuclear magnetic resonance (NMR) spectroscopy. Compared to pure EP, the introduction of TAP can reduce the thermal decomposition rate of epoxy resin and increase the char residue . Meantime, when the phosphorus content was only 0.48%, EP/7.5%TAP passed the vertical burning V-0 rating, obtaining a high flame-retardant efficiency. With the addition of 10 wt% TAP, the limiting oxygen index (LOI) value increased from 22.8% of pure EP to 31.5%, while the peak heat release rate (PHRR), total heat release (THR) and total smoke production (TSP) values decreased by 41.26%, 35.70% and 24.03%, respectively. In addition, the glass transition temperature (T g ) of the epoxy resin decreased from 185 °C to 177 °C, while the storage modulus at 30 °C increased. Subsequently, the flexural tests of the samples revealed that the mechanical properties were well maintained. All these results demonstrated that the TAP was a novel high efficiency flame retardant for EP, which enabled the cured EP to maintain excellent heat resistance and mechanical properties.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Kexin Huang,Wanqing Zhang,Rajkumar Devasenathipathy,Zhongyun Yang,Xiaoxia Zhang,Xiaoqu Wang,Du-Hong Chen,Youjun Fan,Wei Chen
The economical, efficient and durable oxygen reduction catalysts facilitate the enhancement of electrochemical energy devices competitiveness towards widespread applications. In view of this, we provide an innovative sulfuration inducing method for the synthesis of ZnS and cobalt nanoparticles decorated N, S co-doped CNTs (ZnS/Co-NSCNTs) catalyst. S introduced into the zinc-based zeolitic imidazolate frameworks (ZIF-8) and cobalt-based zeolitic imidazolate frameworks (ZIF-67) precursors via pyrolysis , and induced the generation of ZnS/Co-NSCNTs have been confirmed by XRD , SEM, TEM, and XPS techniques . The key features including activity sites, transfer channels and adsorption energy back up the excellent electrocatalytic activity of the as-prepared ZnS/Co-NSCNTs towards oxygen reduction reactions (ORR). ZnS/Co-NSCNTs additionally exhibited a positive half-wave potential of 0.871 V (vs. RHE) with improved current density towards ORR. In alkaline medium , ZnS/Co-NSCNTs catalyst displayed a high tolerance towards methanol and an excellent long-term cycling stability. The observed onset potential for our prepared ZnS/Co-NSCNTs catalyst is analogous with the commercially available noble metal catalysts . Also, ZnS/Co-NSCNTs catalyst as a cathode in zinc-air battery displayed an enhanced electrochemical performance with a highly specific capacity of 750.1 mAh g −1 , outstanding cycling stability, and high rate behavior. This work provides a new approach for the construction of stable low-cost alternative air-cathode catalysts for other energy conversion and storage applications.
✓ 已验证
DOI
高影响因子
Polymer Chemistry
·
2013
·Vol. 5
·期 6
·1857-1862
·
IF 5.231
Yaling Zhang,Yuan Zhao,Bin Yang,Chongyu Zhu,Yen Wei,Lei Tao
A multicomponent reaction (MCR) has been carried out on the platform of controlled radical polymerization (CRP) to construct a ‘one pot’ MCR-CRP system for the facile preparation of well-defined functional polymers. In the current work, a novel ‘one pot’ system has been built through a combination of the Kabachnik–Fields (KF) reaction and reversible addition fragmentation chain transfer (RAFT) polymerization. Compared to a traditional stepwise method and polymer post-polymerization modification, this novel ‘one pot’ system exhibited distinct advantages to much more facilely and efficiently prepared well-defined poly(aminophosphonate)s (polyAPPs). A series of unique polyAPPs have also been successfully prepared through this KF–RAFT system, suggesting this novel method is a general and versatile approach to prepare well-defined organophosphorous polymers.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Jiarun Cheng,Chaojie Lyu,Hongming Chen,Dongsheng Geng,Jinlong Zheng
Elucidating the mechanism of metal-support interface domain regulation is crucial for designing efficient fuel cell electrocatalysts. Herein, we propose an emerging strategy to enhance oxygen reduction reaction (ORR) activity and selectivity by regulating the Lewis alkalinity of carbon support to adjust the Lewis acidity of metal sites. The experimental results and density functional theory (DFT) simulations show that the introduction of N/S atoms into the carbon support structure will break the charge balance of the carbon skeleton and effectively regulate the charge distribution in the Pt-carbon interface domain, thus promoting the oxidation of the Lewis acid Pt atoms to a higher valence state Pt x+ , so as to optimize the adsorption energy of oxygen-containing intermediates. Moreover, Bader charge analysis also verifies that N,S-HMCS, as a Lewis base, can receive more electrons from the Pt sites of Lewis acid, and the electron loss at Pt sites caused by N,S-HMCS strengthens interfacial electron effect. Meanwhile the strong electron adsorption ability of N/S atoms causes the d-band center of Pt atom orbital to shift upward to the Fermi level, which strengthens the binding of metal Lewis acid Pt sites with *OOH intermediates, and improves the 4-electron transfer mechanism. This research reveals the direct role of Lewis acid sites in ORR of fuel cell cathode, and provides a feasible way to guide the design of electrocatalysts with Lewis acid/base double centers.
✓ 已验证
产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2024
·
IF 7.4
Xuan Hou,Shuhua Ma,Xiaohui Wang,Yanjun Ou,Ruiping Liu
Industrial waste fly ash was transformed into a fluffy C-S-H (hydrated calcium silicate) material with thermal activation process . The textural property of the material makes it easily integrated and well dispersed in cement using 2% addition. Characterization techniques such as hydration heat, XRD , thermogravimetric analysis , were carried out to elucidate the effect of this C-S-H on cement hydration : the compressive strength of cement mortar was improved beyond 25%; and the viscosity of cement paste was reduced by 22%; the volume of solidified cement expand by 10%. This advances the overall utilization of cement and improve the properties as well.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·
IF 14.3
Ping-Fen Yang,Tai-Lei Nie,Xia-Nan Sun,Lan-Xin Xu,Cong Ma,Fang Wang,Li-Hong Long,Jian-Guo Chen
Physical exercise has beneficial effect on anxiety disorders, but the underlying molecular mechanism remains largely unknown. Here, it is demonstrated that physical exercise can downregulate the S-nitrosylation of gephyrin (SNO-gephyrin) in the basolateral amygdala (BLA) to exert anxiolytic effects. It is found that the level of SNO-gephyrin is significantly increased in the BLA of high-anxiety rats and a downregulation of SNO-gephyrin at cysteines 212 and 284 produced anxiolytic effect. Mechanistically, inhibition of SNO-gephyrin by either Cys212 or Cys284 mutations increased the surface expression of GABA A R γ2 and the subsequent GABAergic neurotransmission, exerting anxiolytic effect in male rats. On the other side, overexpression of neuronal nitric oxide synthase in the BLA abolished the anxiolytic-like effects of physical exercise. This study reveals a key role of downregulating SNO-gephyrin in the anxiolytic effects of physical exercise, providing a new explanation for protein post-translational modifications in the brain after exercise.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Cangpeng Shan,Qinwei Jia,Yan Zhang,Guoshuai Liu,Xinyu Hou,Yunchong Wang,Rui Han,Caixia Liu,Weichao Wang,Qingling Liu
Removing industrial source CO through catalytic oxidation and providing heat for denitrification units have significant economic and environmental benefits. Sulfur poisoning of catalysts is the bottleneck to stabilize the system operation. To overcome this problem, we fabricated sulfate modified Pt/TiO 2 by appropriate NH 4 HSO 4 deposition, which survived in the SO 2 environment with the concentration as high as 1000 ppm SO 2 , and exhibited an outstanding stability with over 90% CO conversion at 200 °C for 500 h under a typical steel sintering flue gas condition. Experimental and theoretical explorations confirmed that the electronic structure of PtO x clusters was optimized through Pt-O-S bridges after sulfate modification. The O 2p band center closer to the Fermi level and the smaller energy difference between Pt 5d and O 2p band centers led to more active lattice oxygen of PtO x clusters. The more stable π back bonding between Pt 5d and CO 2p and weaker hybridization between Pt and the π⁎ (Ssp2-Osp2)2 orbital of SO 2 indicated enhanced CO adsorption while weakened SO 2 adsorption on Pt sites. The above factors simultaneously improved the low-temperature activity and sulfur resistance for CO oxidation over sulfate modified Pt/TiO 2 . This work provides new insights for the design of sulfur-resistant catalysts and the understanding on the effect of sulfates on catalytic activity.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 32
·期 10
·2110335
·
IF 18.808
Hu Li,Limei Lin,Liquan Yao,Fengying Wu,Dong Wei,Guoliang Liu,Zhigao Huang,Shuiyuan Chen,Jianmin Li,Guilin Chen
MXene, a class of 2D materials of metal carbide or nitride, has attracted a lot of attention recently due to its excellent optical and electrical properties. In this work, titanium-carbide MXene (Ti 3 C 2 T x ) is introduced as a back electrode in Sb 2 (S,Se) 3 thin-film solar cells (FTO/CdS/Sb 2 (S,Se) 3 /MXene) for the first time, which displaces traditional carbon (C) and gold (Au) electrodes entirely. Impressively, thanks to its high conductivity, mild reflectivity, and flexible flake architecture, the MXene-based device performance outperforms typical C and Au electrodes by 153% and 77%, respectively. Specifically, the tunable work function of MXene and a beneficial Sb–O bond formed between Sb 2 (S,Se) 3 and MXene efficiently suppress the recombination and enhance charge transport by enjoying the unique merit of the rich terminal groups of MXene. As a result, the best efficiency of 8.29% of MXene-based Sb 2 (S,Se) 3 solar device is achieved, which represents the highest performance of noble metal and/or hole transport layer-free derived Sb 2 (S,Se) 3 solar cells to date. This result has revealed that MXene is a feasible material to substitute the back electrode in Sb-based solar cells to reach high efficiency, low cost, and high stability.
✓ 已验证
DOI
高影响因子
EUROPEAN POLYMER JOURNAL
·
2025
·
IF 6.3
Hongjian Gu,Yinglin Hu,Kaiyuan Fan,Binggang Liu,Danhui Wang,Siyuan Dong,Xinbo Dong,Xiaotong Pan,Yuxi Pan,Ce Song,Cheng Liu,Xigao Jian
The development of high-performance polymers that simultaneously achieve high-temperature resistance and solution processability holds critical importance for advancing high-tech applications. This study demonstrates an innovative molecular design strategy through the synthesis of side-phenyl-modified anthracene-type bisphthalazinone monomer (D-BDHPZ) derived from cost-effective pyromellitic dianhydride (PMDA) and subsequent preparation of poly(aryl ether sulfone ketone)s incorporating both side-phenyl-modified anthracene-type bisphthalazinone and ether-type bisphthalazinone (O-BDHPZ) moieties (PODPESKs). The resulting PODPESKs exhibit excellent thermal properties with glass transition temperatures ( T g s) ranging from 326 to 375 ℃ and thermal stability exceeding 460 ℃, while maintaining room-temperature solubility in N -Methylpyrrolidone (NMP) and tetrachloroethane. This unique combination enables solution processing of high-temperature resistant resins, allowing fabrication of high-performance films via solution casting. Comprehensive characterization reveals outstanding film properties including a tensile strength of 79.6–91.0 MPa, dielectric constants of 2.85–3.20, water absorption of 0.83–1.45 %, water contact angles of 82.6–93.6°, optical transmittance up to 83 % at 800 nm, and retention of 56.0 % storage modulus at 300 ℃. This work establishes a novel paradigm for designing solution-processable high-performance polymers with significant potential for cutting-edge applications in aerospace, electronics, and energy sectors.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）