JOURNAL OF POLYMER RESEARCH
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2016
·Vol. 23
·期 5
·1-8
·
IF 1.969
Yang Xiao,Duan Lian,Cheng Xinjian,Ran Xiaoqi
Effect of polydopamine coating on improving photostability of poly(1,3,4-oxadiazole)s (POD) fiber was studied in detail. Due to strong adhesion ability of polydopamine, the POD fiber could be coated easily by dopamine in Tris–HCl ( pH = 8.5) solution at room temperature with exist of oxygen. The polydopamine coating was characterized by SEM, XPS and ATR-FTIR. It was proved by UV-spectra analysis that the polydopamine coating had a strong absorbance in ultraviolet wavelength and was very stable to ultraviolet. Additionally, it was found by pyrogallol autoxidation method that the polydopamine could efficiently capture superoxide anion radical, which was an important factor that resulted in photodegradation of POD fiber, due to its catechol structure. These two findings implied that polydopamine coating was a potential photoprotection agent. Finally, compared to POD fiber, the tensile test of POD fiber coated by polydopamine further proved that the polydopamine did improve the photostability of POD fiber. And the FTIR analysis of POD coated by polydopamine also confirmed that there was almost no macromolecular change after UV exposure.
研究领域:
高分子材料科学
·
功能纤维
·
光化学稳定性
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表面工程
·
复合材料
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2020
·Vol. 49
·期 10
·6208-6213
·
IF 1.774
Chen Ruilan,Cui Guonan,Yang Yanchun,Li Yuemin,Alata H.,Tian Xiao,Tegus O.
Abandoning the traditional deposition of as-prepared Cu 2 ZnSnS 4 (CZTS) thin films in a glove box, a modified thiol-based solution system suitable for deposition in air is described to further reduce device production costs. In this modified approach, metal salts and thiourea are used as the starting materials and are dissolved in a mixed solution of thioglycolic acid and 2-methoxyethanol, forming a homogeneous precursor solution. The as-deposited CZTS thin films are obtained by spin-coating the precursor solution in air, followed by the selenization process to form large-grained Cu 2 ZnSn(S,Se) 4 thin films. Combining the microstructural results with compositional analyses, the optimal selenization conditions for the Cu 2 ZnSn(S,Se) 4 absorber layer were found to be 540°C and 10 min.
研究领域:
材料科学
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薄膜制备
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光电材料
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能源材料
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半导体工艺
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DOI
高影响因子
Joule
·
2019
·
IF 0
Yang Jin,Kai Liu,Jialiang Lang,Xin Jiang,Zhikun Zheng,Qinghe Su,Zeya Huang,Yuanzheng Long,Chang-an Wang,Hui Wu,Yi Cui
Lithium-sulfur (Li-S) and Lithium-selenium (Li-Se) batteries are considered as promising candidates for next-generation battery technologies, as they have high energy density and low cost. However, due to the use of a solid Li-metal anode and a liquid organic electrolyte, the current Li-S and Li-Se batteries face several issues in terms of Coulombic efficiency and cycling stability, which seriously impeded their development. Here, we report solid-electrolyte-based liquid Li-S and Li-Se (SELL-S and SELL-Se in short) batteries. The batteries use a Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) ceramic tube as electrolyte and work at temperatures higher than the melting point of Li; thus, polysulfide or polyselenide shuttle effects and Li dendrite growth are effectively prevented, and high energy density, together with high stability, fast charge/discharge capability, high Coulombic efficiency, and high energy efficiency, can be achieved. The SELL-S and SELL-Se batteries provide broader platforms for constructing high-energy, high-power, long-lifetime, and low-cost energy storage.
研究领域:
电化学储能
·
新能源材料
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无机非金属材料
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DOI
CHINESE JOURNAL OF POLYMER SCIENCE
·
2019
·Vol. 37
·期 4
·428-436
·
IF 2.804
Huang Yuzhang,Chen Ping,Wei Bo,Hu Rongrong,Tang Ben Zhong
Hyperbranched polymer with highly branched three-dimensional topological structure, a large number of end groups, and multifaceted functionalities have gained much attention, while polymers with aggregation-induced emission (AIE) properties become a group of popular luminescent materials recently. The design and synthesis of AIE-active hyperbranched polymers, which combine the advantages of these two types of materials, are attractive but challenging. In this work, four hyperbranched poly(tetrahydropyrimidine)s were synthesized from the metal-free room temperature multicomponent tandem polymerization of diester group-activated internal alkyne, polyfunctional aromatic amines, and formaldehyde in methanol under the catalysis of acetic acid. Through different monomer combination and controlling the monomer loading order, hyperbranched polymers with various topological structures as well as sequences of different functional groups in the polymer backbone were obtained with high molecular weights (up to 3.0 × 10 4 g/mol) in high yields (up to 98%). The hyperbranched poly(tetrahydropyrimidine) emitted faintly in solution, while its luminescence was notably enhanced in the aggregated state, suggesting its typical aggregation-induced emission property. It is anticipated that the multicomponent polymerization may provide a synthetic platform for the construction of hyperbranched polyheterocycles with diverse structures and functionalities.
研究领域:
材料化学
·
高分子科学
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DOI
高影响因子
Materials Today Chemistry
·
2024
·
IF 6.7
Xiaoyu Zhou,Chuanliang Wu,Zelin Zhao,Yusheng Wang,Yuanyuan Yang,Jingxing Guo,Jia Wang,Xiaolong He,Yinyu Xiang,Ning Han,Junsheng Li
Despite the bright future of aluminum-sulfur (Al–S) batteries due to the ultrahigh energy-to-price ratios, the development of this new energy storage system is plagued by the shutting of polysulfides and sluggish kinetics during redox conversions. Herein, ferrocene as efficient polysulfide mediators and electrocatalysts is covalently grafted onto glass fiber (GF) membranes, which serves as separators in Al–S batteries. Attributed to the strong chemisorption and catalytic effect of metallocene toward polysulfide conversions, Al–S cells assembled with the grafted separators deliver an ultrahigh initial capacity of 1347.9 mAh g −1 (at 200 mA g −1 ) and desirable rate performance (328.1 mAh g −1 at 500 mA g −1 ). As validated by theoretical calculations, effective polysulfide binding is achieved through beneficial cation-π interactions between Al 3+ in polysulfides and the negatively charged cyclopentadienyl ligands in ferrocene, providing novel insights into the exploration of metal-sulfur chemistries for stable energy storage.
研究领域:
储能材料
·
电化学
·
材料科学
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DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Shijian Zhang,Xiuxiu Huang,Wenbin Ruan,Xiang Li,Shuangshuang Huai,Kai Chen,Ge Ge,Hao Zhang,Jie Li,Yaner Ruan,Xiufang Wang
The S-scheme heterojunction has been recognized as an effective strategy to boost photocatalytic hydrogen evolution performance. However, the insufficient separation and transfer of photogenerated carriers still is a critical bottleneck that limits further activity improvement. Here, we rationally constructed defect-rich nanostructured Sv-ZnIn2S4/CdS (Sv-ZIS/CdS) S-scheme heterojunctions by introducing sulfur vacancies (Sv) into ZnIn2S4 and systematically explored the role of S vacancy defects in the regulation of interfacial charge dynamics. Experimental results demonstrate that the synergistic combination of S-scheme heterojunction and Sv effectively extends visible-light absorption and accelerates charge separation. Specifically, sulfur vacancies enhance the built-in internal electric field (IEF) within the heterostructures, thereby driving the spatial separation and directional migration of photogenerated carriers. Density functional theory (DFT) calculation further reveals that Sv-induced charge redistribution reduces the surface kinetic barrier, facilitating the adsorption and activation of H2O and H* intermediates and thus boosting the hydrogen evolution reaction. Benefiting from these synergistic effects, the optimized Sv-ZIS/CdS photocatalyst exhibits a remarkable hydrogen evolution rate (3.852 mmol g–1 h–1). This work provides profound insights into the manipulation of heterojunction interfacial charge behavior via defect engineering, offering a feasible paradigm for designing high-performance nanostructured photocatalysts for solar-to-hydrogen conversion.
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高影响因子
ADVANCED MATERIALS
·
2026
·
IF 29.1
Chiyao Zheng,Tianyun Liu,Dongniu Wang,Shumin Zhang,Linxing Meng,Yulong Huang,Liang Li
Defects in photocatalysts strongly influence charge transfer behavior, and selectively exploiting defect-rich interfacial sites as chemically addressable anchors provides a new pathway for atom-economical hydrogen production. Here, we report a defect anchoring strategy that selectively exploits sulfur-defect-rich interfacial sites as chemically specific docking sites for Pt–S coordination, enabling stable Pt deployment at an ultralow loading of only 0.084 wt%. In situ spectroscopy and first-principles calculations reveal that these defect-anchored Pt–S motifs efficiently extract electrons from interfacial sulfur sites and optimize hydrogen adsorption thermodynamics for accelerated HER kinetics. The optimized photocatalyst delivers hydrogen evolution rates of 22.43 mmol g −1 h −1 under visible light and 91.35 mmol g −1 h −1 under full-spectrum irradiation, exhibiting excellent long-term stability. When immobilized as a scalable catalyst film via an immersion process, it achieves an areal H 2 flux of 331.34 mmol m −2 h −1 . More broadly, we show that the same defect-guided Pt-anchoring rule operates across multiple ZnIn 2 S 4 -based heterojunctions, highlighting a transferable site-definition strategy for atom-economical noble-metal deployment. Ultimately, this approach redefines interfacial defects in heterojunction photocatalysts as programmable chemical sockets for noble-metal placement, establishing a general blueprint for atom-economical and scalable solar hydrogen generation.
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产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Qingpo Yang,Shangkang Xie,Zixiang Xing,Jie Liu,Yufeng Shen,Ling Huang,Rubo Fang,Feng Feng,Chunshan Lu,Qingtao Wang,Chong Yao,Qunfeng Zhang,Xiaonian Li
The shielding effect effectively suppresses the chemical adsorption between platinum and sulfur species and hinders the formation of Pt-S bonds. • Electrons transfer from Pt to the carbon encapsulation layer to construct metal-carbon interfacial structures, which endows the catalyst with superior hydrogenation activity in sulfur-containing environments. • Carbon-encapsulated structure enhances the structural stability and sulfur resistance of the catalyst. • Experimental characterizations combined with DFT calculations elucidate the underlying reaction mechanism. The presence of sulfur-containing impurities in industrial feedstocks leads to the rapid deactivation of metal-based catalysts, which originates from the specific recognition between the d orbitals of metallic active sites and the p orbitals of sulfur. In this work, a carbon-encapsulation catalyst strategy was employed to shield this specific d–p orbital recognition effect. The Pt-base catalyst showed a sharp 92.28% loss in activity after sulfur poisoning, whereas the carbon-encapsulated catalyst maintained high efficiency and stability, sustaining a reaction rate of 83.41 min –1 even at high mercaptan concentrations (7945 ppm). Moreover, it exhibited excellent reusability with negligible deactivation after five cycles. Characterization and density functional theory (DFT) calculations revealed that the carbon shell serves as “armor” for Pt active sites, physically isolating them from sulfur impurities and suppressing the hybridization between Pt nanoparticles (Pt NPs) and the S 2p orbitals. Meanwhile, Pt nanoparticles induce electron transfer to the carbon layer, converting it into a conductive “metallic carbon” that enhances hydrogenation activity. This work provides new insights into the anti-sulfur poisoning mechanism of catalytic hydrogenation. Download: Download high-res image (255KB) Download: Download full-size image
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Wentong Su,Chunlian Hu,Wei Zhang,Guodong Zhang,Wenke Zhang,Yuantao Chen
Modulating the electronic structure of inorganic semiconductors using biomass is an emerging strategy for developing highly efficient photocatalysts. In this study, Chlorella (Ch) was used as a biological carrier and electron donor, and a bio-inorganic hybrid photocatalyst, Chlorella@ZnIn₂S₄ (ZIS-Ch), featuring bio-induced sulfur vacancy formation, was successfully synthesized via a one-step hydrothermal method. Experimental and characterization results indicate that nitrogen- and oxygen-containing functional groups (–NH 2 , –OH, –COOH) on the Ch surface form interfacial covalent bonds (M–N/O) with Zn 2+ /In 3+ in ZnIn₂S₄, inducing the directed injection of electrons from Ch into the ZnIn 2 S 4 lattice. Concurrently, EPR spectroscopy detected the formation of sulfur vacancies (V S ). Under simulated sunlight and under optimal conditions, the photocatalytic hydrogen production rate of ZIS-Ch40 reached [7.969 mmol⋅g −1 ⋅h −1 ], which is 1.59 times and 5.6 times higher than that of pure ZIS and Ch, respectively, and it maintained good activity even after five cycles. This study provides a new approach for utilizing intact cells to regulate inorganic semiconductor defects and band structures, thereby enabling highly efficient solar hydrogen production.
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产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Jinling Wu,Runmiao Chen,Pengjing Yin,Yuanzhen Zhou,Jieli Tang,Chengbin Du,Qi Xue
S-modified MnO 2 /Ni(OH) 2 hollow nanosheets were constructed for enhanced UOR. • Requires 1.30 V at 10 mA cm −2 and remains stable for 48 h. • MnO 2 phase transformation promotes the generation of Ni 3+ active species. • S-modification enhances urea adsorption while suppressing competitive OH − adsorption. The urea oxidation reaction (UOR) provides an alternative anodic process for electrochemical hydrogen generation, but developing catalysts with high activity and sustained performance remains challenging. In this study, we report an S-modified nickel-based catalyst with a hollow nanosheet architecture (α/γ-MnO 2 /Ni(OH) 2 -S), demonstrating enhanced UOR performance in alkaline media. α/γ-MnO 2 /Ni(OH) 2 -S attains a current density of 10 mA cm −2 at a potential of 1.30 V and maintains reliable durability for 48 h without significant degradation. The improved activity and durability are associated with the hollow nanosheet structure, the phase transformation of MnO 2 , and S-modification, which facilitate mass transport and charge transfer, modulate the electronic structure of Ni(OH) 2 to promote the formation of Ni 3+ active species, and enhance the electrochemical response to urea at different concentrations. This research establishes a practical avenue for constructing advanced nickel-based UOR catalysts through rational structural optimization, phase regulation, and surface modification. Download: Download high-res image (125KB) Download: Download full-size image
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高影响因子
CHEMICO-BIOLOGICAL INTERACTIONS
·
2026
·
IF 5.2
Xuguang Mi,Jianhua Fu,Lei Liu,Lingshan Wang,Shiling Chen,Mengxue Wu,Chunxue Niu,Yan Wang,Lixin Cao,Lin Wang,Ling Deng,Xiaodan Lu,Xiuying Lin
Bisphenol S (BPS), as an environmental pollutant, poses a potential threat to reproductive system health. In this study, we added BPS to primary human endometrial stromal cells (hEnSCs) to detect the acute injury it causes and its long-term effects on the endometrium. The results showed that short-term treatment with BPS can significantly promote oxidative stress and apoptosis of hEnSCs, while long-term treatment can cause excessive senescence of hEnSCs and reduced receptivity. In addition, the culture medium of senescent cells treated with BPS can induce senescence of young hEnSCs. Studies have reported that secondary senescence can be alleviated, and we utilised the autophagy activator Rapa to treat secondary senescence of hEnSCs. We found that Rapa can inhibit the senescence of young cells induced by the culture medium of senescent cells treated with BPS. Therefore, autophagy activated by Rapa can attenuate the secondary senescence of hEnSCs induced by BPS-treated culture medium.
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Wei Chen,Hongwei Li,Yisheng Chen,Peipei Li,Qingqing Guan,Ning Zhou,Hongbing Luo,Dandan ma,Xinyang He,Junfeng Tang
Efficient photocatalytic degradation of acetamiprid and simultaneous hydrogen energy recovery remain a significant challenge. Herein, a S-scheme heterojunction photocatalyst with dual-defect (CdS@ZnO-OV) was successfully synthesized. By constructing defect engineering to modify ZnO and CdS loading, the built-in electric field (IEF) was successfully formed. The prepared material exhibited superior optical and photoelectric properties, owing to interfacial synergistic effect of the double defect. The removal rate of ACE was 95.24%, and simultaneous hydrogen evolution rate was 1.31 mmol g −1 h −1 . Comprehensive characterization, experiments, and theoretical calculations demonstrated that coupling between dual-defect synergy and interface charge mechanism of S-scheme heterojunction not only provided more active sites (promoting the adsorption and decomposition of H 2 O), but also built stable and efficient electronic channels and constructed IEF at the interface, which enhanced photoelectric properties of the material and achieved simultaneous hydrogen evolution and pollutant degradation. Moreover, the prepared material exhibited favorable stability and applicability by cyclic experiments and characterization after reaction. This work revealed the operational mechanism and practical effects of S-scheme heterojunction catalytic systems with dual-defect, providing new strategies for hydrogen recovery from ACE treatment.
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高影响因子
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