JOURNAL OF ALLOYS AND COMPOUNDS
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2022
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IF 6.371
Yanlin Pan,Dongliang Zheng,Jianxin Chen,Jun Zhou,Rui Wang,Xingyu Pan,Xiaobo Hu,Shaoqiang Chen,Pingxiong Yang,Jiahua Tao,Junhao Chu
The vapor transport deposition (VTD) processing is one of the most promising techniques to fabricate quasi-one-dimensional antimony selenosulfide (Sb 2 (S,Se) 3 ) photovoltaic materials with micrometer-scale grains and preferred crystal orientations . However, current researches rarely involve the effect of evaporation source on the film growth by VTD. Herein, we adopt Sb 2 (S,Se) 3 tablets as evaporation sources to develop Sb 2 (S,Se) 3 solar cells for the first time. We find that increasing the evaporation source area can effectively improve the deposition rate of Sb 2 (S,Se) 3 films, leading to an enhancement of the (221) preferred orientation and columnar large grains of the absorber layers, further improves the device photovoltaic performance . With fine-tuning of the evaporation source area, the optimized Sb 2 (S,Se) 3 solar cells show a high efficiency up to 7.6%. This study proposes a unique strategy to improving the quality of low-dimensional materials and a deeper understanding of the growth mechanism via vacuum methods.
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Journal of Energy Chemistry
·
2024
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IF 14
Dong Zhang,Minghui Zhu,Ran Qin,Peixian Chen,Maoye Yin,Dafeng Zhang,Junchang Liu,Hengshuai Li,Xipeng Pu,Peiqing Cai
Rational design of photocatalyst to maximize the use of sunlight is one of the issues to be solved in photocatalysis technology. In this study, the CuFe 2 O 4 @C/Cd 0.9 Zn 0.1 S (CFO@C/CZS) S-scheme photocatalyst with photothermal effect was synthesized by ultrasonic self-assembly combined with calcination. The dark CFO@C absorbed visible light and partly converted into heat to promote the hydrogen evolution reaction. The presence of heterojunctions inhibited the photogenerated electron-hole recombination. The graphite-carbon layer provided a stable channel for electron transfer, and the presence of magnetic CFO made recycle easier. Under the action of photothermal assistance and heterojunction, the hydrogen evolution rate of the optimal CFO@C/CZS was 80.79 mmol g −1 h −1 , which was 2.55 times and 260.61 times of that of pure CZS and CFO@C, respectively. Notably, the composite samples also exhibit excellent stability and a wide range of environmental adaptability. Through experimental tests and first-principles simulation calculation methods, the plausible mechanism of photoactivity enhancement was proposed. This work provided a feasible strategy of photothermal assistance for the development of heterojunction photocatalysts with distinctive hydrogen evolution.
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MINERALS ENGINEERING
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2022
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IF 5.479
Xing-fu Zheng,Jin-lan Xia,Hong-chang Liu,Zhen-yuan Nie,Chang-qin Qin,Yu Wang,Jian-hua Chen
Elemental sulfur (S 0 ), as one of the most important intermediates formed during chalcopyrite bioleaching, can exist in a variety of allotropic forms, among which amorphous μ-S and orthorhombic ɑ-S 8 are the most common forms. Although previous studies have focused on the effect of S 0 on chalcopyrite bioleaching, how S 0 allotropes affect chalcopyrite bioleaching is unclear. Therefore, in this work, the differential effect of ɑ-S 8 and μ-S on chalcopyrite bioleaching by Acidithiobacillus ferrooxidans ( A. ferrooxidans ) was studied at the molecular and atomic levels by combining synchrotron radiation-based X-ray absorption near edge structure (XANES) spectroscopy, comparative transcriptome analysis and density functional theory (DFT) calculations, accompanied by the determination of solution behaviors and mineral surface morphologies. The results showed that µ-S was favorable for bacterial adsorption and that the addition of µ-S could promote the copper extraction rates by A. ferrooxidans , while the addition of ɑ-S 8 inhibited the copper extraction rates. The XANES results showed that both cases with the addition of ɑ-S 8 and µ-S could affect the formation and evolution of secondary minerals during bioleaching by A. ferrooxidans . The comparative transcriptome analysis showed that the gene expression of A. ferrooxidans was much more affected by the addition of µ-S, with more genes upregulated than ɑ-S 8 . The DFT results indicated that both ɑ-S 8 and µ-S could adsorb on the CuFeS 2 (0 0 1) surface easily, and µ-S could make the CuFeS 2 surface obviously change, while ɑ-S 8 hindered the adsorption of bacterial cells. Of note, µ-S could enhance the interaction between the CuFeS 2 (0 0 1) surface and bacterial cells with stronger bonding and more transferred electrons than ɑ-S 8 .
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ChemNanoMat
·
2022
·Vol. 8
·期 10
·e202200268
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IF 3.82
Mengmeng Liu,Jingjing Li,Pengfei Wang,Shuai Chen,Zhengping Dong,Fengwei Zhang
Graphical The encapsulation of Pt/TiO 2 -450H catalyst with SMSI into zeolite silicalite-1 (S-1) is reported. The resulting Pt/TiO 2 @S-1 catalyst dispalyed superior catalytic performance especially for halogenated nitroaromatics and without degradation in selectivity after 7 cycles. It is attributed to the high surface area, SMSI effect in confined space and the pore structure of S-1 with selective adsorption of substrates. The encapsulation of metal nanoparticles (NPs)-based active sites and homogeneous catalysts in nanoporous materials has been of highly research focus for tuning their catalytic activity, selectivity and stability. Although the catalysts with strong metal-support interaction (SMSI) hold the reversible encapsulation feature in a certain atmosphere, there is still a lack of systematic research on them in a real confined environment. Herein, we present a highly selective and stable Pt/TiO 2 @S-1 catalyst, which is prepared by in-situ growth of classical silicalite-1 on the external surface of Pt/TiO 2 -450H pre-catalyst with SMSI effect. Encouragingly, the encapsulated 20Pt/TiO 2 @S-1 catalyst demonstrates unprecedented catalytic performance for various nitroaromatics and without any degradation in selectivity after 7 cycles (>99%) for the hydrogenation of 1-chloro-4-nitrobenzene. Such situation is attributed to the high surface area, SMSI effect in confined space as well as the pore structure of silicalite-1 with selective adsorption of substrates.
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SYNTHETIC METALS
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2016
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IF 2.299
Hui Xu,Xiaohui Chen,Saihu Pan,Yong Qin,Xiaosong Chen,Yongxin Tao,Yong Kong
Sulfur and nitrogen codoped three-dimensional graphene-MnS (MnS/S,N-3DG) hybrids are facilely synthesized via a hydrothermal method followed by freeze-drying and pyrolysis treatment. The obtained MnS/S,N-3DG as an electrocatalyst for oxygen reduction reaction (ORR) shows excellent electrocatalytic performance. The codoped S and N as well as the introduced MnS significantly promote the electrocatalytic activity of graphene and efficiently catalyze the ORR process through a mixture of two-electron transfer pathway and four-electron transfer pathway (electron transfer number equals to 3.8 or 3.9), which is even better than the commercial Pt (5%)/C catalyst. Moreover, the developed MnS/S,N-3DG electrocatalyst possesses excellent long-term stability and methanol tolerance, and could be a promising cathode electrocatalyst in future energy conversion and storage systems.
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ACS Nano
·
2025
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IF 16
Anqiang Jiang,Heng Guo,Shan Yu,Fengying Zhang,Xuan Zhang,Limin Xu,Yi Li,Chun Tang,Xin Tu,Ying Zhou
The electron transfer mechanism involving multiple trapping states has great implications for dictating the photoelectrochemical (PEC) hydrogen evolution reaction (HER). Uncovering the ultrafast dynamics of multiple trapping states in defect-rich catalysts to suppress undesirable Shockley–Read–Hall (SRH) recombination and boost electron extraction remains a crucial yet challenging task. Herein, we bypass defect-induced SRH recombination sites and redirect more excited electrons toward the HER by engineering an additional electron transfer channel within Ag–In–S quantum dots (AIS QDs) via Mn doping. Photoluminescence spectroscopic studies indicate effective charge carrier transfer from the band edge to the doping states, inducing a 5.3-fold enhancement in the electron transfer rate. Using ultrafast transient absorption spectroscopy, we reveal that host photoexcitation leads to subpicosecond electron transfer from the conduction band to the empty Mn2+ d-orbitals in Mn-doped QDs, and the resultant charge transfer state shortens the excited-state electron transfer lifetime from 3.73 to 1.19 ns, corresponding to a 300% acceleration of carrier depopulation and enhancing excited electron availability. Moreover, the evolution of the product composition indicates the improved interfacial utilization of holes, as the applied PEC bias relieves kinetic constraints on hole transfer. Consequently, a saturated photocurrent density of 8.6 mA cm–2 at 0.5 V vs RHE was achieved for the as-fabricated PEC device under one-sun irradiation, comparable to the latest bare heavy-metal-free QD-based PEC systems. These results underscore that modulating electron dynamics, previously dominated by intrinsic defects, through intermediate energy levels is a promising strategy to enable high-efficiency PEC solar energy conversion.
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PubMed
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Yujie Zhang,Yuxia Zhou,Guofei Chen,Haiyan Zhang,Xingzhong Fang
A series of poly(ester-imide)s (PEsIs) were synthesized by copolymerization of p -phenylene bis(trimellitate anhydride) (TAHQ), 4,4′-biphthalic dianhydride ( s -BPDA), and 2,2′-bis(trifluoromethyl)benzidine (TFDB) with different designed CF 3 -containing bisether-diamines. All of the PEsIs exhibited moderate glass transition temperatures ( T g s) in the range of 233–253 °C, low minimum melt viscosities of 506–3758 Pa·s, excellent dimensional stability with coefficient of thermal expansion (CTE) values of 30.4–37.1 ppm/K, and good optical properties ( T 450 of 84 %–86 %, T 850–1550 of 90 %). PEsI-IV exhibited the best comprehensive properties among the PEsIs, particularly with the lowest melt viscosity, excellent dimensional stability and high transmittance. These thermoplastic PEsIs with low CTE and high transparency have potential applications in the field of optical injection molding materials.
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SOLID STATE SCIENCES
·
2025
·
IF 3.3
Wenyue Zhao,Zipeng Jin,Kunting Li,Huimin Feng,Lei Xu,Yiming Zhang
Efficiently harnessing solar energy for hydrogen production remains a significant challenge, primarily dependent on the rational design of photocatalysts. In this work, an S-scheme heterojunction was constructed by integrating TiO 2 with a biphenyl-bridged covalent triazine framework (CTF-2). The extended π-conjugation in CTF-2 significantly enhances visible-light absorption and generates abundant delocalized electrons. The heterostructure was confirmed by characterizations, which revealed an increased specific surface area and enhanced redox capacity. Photoelectrochemical tests indicated a significant reduction in charge recombination, attributed to the newly formed Ti-N bonds that promote electron transfer from TiO 2 to CTF-2. The active species capture experiment and band structure analysis corroborated the S-scheme charge transfer route. The optimal 1.0 wt% CTF-2/TiO 2 achieved an H 2 evolution rate of 2.975 mmol·g -1 ·h -1 , 4.92 times higher than pristine TiO 2 , and retained 83% of its activity after five cycles. This study provides a practical approach to designing high-performance, stable heterostructures for solar energy conversion.
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PHYTOMEDICINE
·
2025
·
IF 8.3
Hongyu Zhang,Guoshun Lin,Yifei Wang,Aihui Zheng,Hanlin Luo,Zhang Cao,Guige Hou,Yun Hou
Background Bisphenol S (BPS) is widely used in consumer products and food packaging, but its safety and potential risks have garnered increasing attention. Hydroxytyrosol (HT), a natural polyphenolic compound with potent antioxidant and anti-inflammatory activities, is yet to be investigated for its potential to reverse BPS-induced effects and the underlying mechanistic pathways. Methods The toxicological potential of BPS was assessed using the computational platform ProTox 3.0. Molecular experiments were performed to elucidate the effects of BPS on the nervous system. Protein-protein interaction networks were constructed to predict the targets of BPS. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were used to explore the potential mechanisms of action, followed by molecular docking studies. We examined the therapeutic efficacy of HT against BPS-induced nerve damage using molecular assays and in vivo murine models. The key target identified by molecular docking was validated using RT-qPCR. Results Significant neurotoxic effects of BPS were identified using platform-based predictive analysis. The experimental results demonstrated that exposure to BPS not only reduced the viability of BV2 and HMC3 microglial and elevated intracellular reactive oxygen species (ROS) levels, but also induced a phenotypic shift in microglia toward a pro-inflammatory state, thereby may underscore its neurotoxic effects. Based on the results of the network toxicology analysis, BPS is potentially capable of exacerbating nerve damage via its modulatory effects, such as its modulation of cytochrome P450 Family 1 Subfamily A (CYP1A), like-CYP1A1, CYP1A2, and cytochrome P450 Family 2 Subfamily B6 (CYP2B6), etc. Finally, subsequent confirmation using network pharmacology and molecular docking analysis revealed that HT is capable of counteracting BPS-induced effects, and that CYP1A1 is highly likely to be a pivotal target implicated in both BPS-mediated toxicity in microglia and the therapeutic mechanisms of HT. This was further verified using RT-qPCR. Conclusion CYP1A1 is a critical mediator of BPS-induced toxicity and a potential therapeutic target of HT. These findings highlight the potential of natural compounds to mitigate environmental toxicant-induced neurological damage.
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高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Bing Wang,XiangBo Feng,Yao Liu,YuZhen Zhao,Teng Du,EnZhou Liu,Zongcheng Miao,Zhuo Li
A supramolecular breakthrough in photocatalytic heterojunction design is achieved through hydrogen-bond-driven assembly of an organic–inorganic S-scheme system. Axial hydroxyl-functionalized subphthalocyanine (SubPc-5) spontaneously self-assembles into a hydrogen-bonded organic framework (HOF) via intermolecular O–H⋯O/N interactions while simultaneously anchoring onto Ag 3 PO 4 surfaces through interfacial carboxyl-oxygen hydrogen bonds, forming a structurally coherent heterojunction. Advanced characterizations combining density functional theory (DFT), synchrotron irradiation XPS (SI-XPS), and Kelvin probe force microscopy (KPFM) demonstrate this dual-level hydrogen bonding strategy creates a built-in electric field that drives directional charge separation while suppressing recombination. The resulting SubPc-5/Ag 3 PO 4 system exhibits extended visible-light absorption, prolonged carrier lifetimes and exceptional stability. These synergistic effects enable ultrahigh photocatalytic degradation efficiencies of 99.0 % for chlortetracycline and 98.5 % for ciprofloxacin within 30 min, with kinetics 4-fold faster than pristine Ag 3 PO 4 . Molecular dynamics simulations further reveal strong π-π interactions between SubPc-5 and pollutant molecules, facilitating adsorption and degradation. This work not only achieves record-performance antibiotic degradation but also establishes hydrogen-bonding as a universal strategy for constructing organic-inorganic heterostructures with precisely controlled charge-flow pathways, opening new avenues for supramolecular photocatalyst design.
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EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
·
2025
·
IF 4.7
Xia Yin,Suguro Rinkiko,Bin Chen,Yanqing Wang,Yan Yan,Qian Ding,Yichun Zhu,Yi Zhun Zhu
Efficient embedding of highly hydrophilic drugs within poly (D, L-lactic-co-glycolic acid) (PLGA) to realize sustained release was substantially challenging. This study aimed to effectively embedding the hydrophilic low-molecular-weight compound S-propargyl-cysteine (SPRC) within PLGA to provide prolonged maintenance of SPRC both in vitro and in vivo . SPRC-loaded implants (SP-IMs) were prepared by hot melt extrusion (HME). The minor changes in lactide: glycolide (L/G) ratio, molecular weight (M w ), and PLGA endcap, as well as the slight differences in preparation parameters such as mixing methods and the drug-to-PLGA weight ratio, with or without releasing modifier, were also investigated. The findings indicated that embedding SPRC by implantation overcame the escape of SPRC to the external aqueous phase with double emulsion method, thus creating excellent release behavior both in vitro and in vivo . Both the variations in PLGA and the preparation parameters significantly affect the physicochemical characteristics and degradation rates of the PLGA matrix, and consequently, the formulation release behavior both in vitro and in vivo . Different methods of mixing SPRC with PLGA would remarkably affect the SPRC distribution, thus creating varied release profiles. Incorporation of PEG 1500 enhanced SPRC release to offer more steady drug concentration in the whole release period. After subcutaneous administration, the SP-IMs showed more steady drug plasma concentration over the whole release period in comparison with SPRC parental molecule solution. Moreover, the in vivo release behavior was essentially consistent with the in vitro SPRC release profiles. It was concluded that SP-IMs have been successfully designed with high embedding efficiency for sustained release from 1 week to 2 months for the first time and could be promising for the treatment of rheumatoid arthritis (RA).
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yang Wan,Jiejing Liu,Huijie Wang,Xianghai Song,Weiqiang Zhou,Xin Liu,Jisheng Zhang,Yangyang Yang,Xiaojie Zhang,Binrong Li,Pengwei Huo
The inherent chemical stability of polyethylene terephthalate (PET) poses significant challenges for its natural degradation, leading to severe environmental accumulation. This study presents an innovative Co 1-x S/g-C 3 N 4 S-scheme heterojunction photocatalyst designed to enhance interfacial electron transfer and promote cobalt redox cycling for efficient peroxymonosulfate (PMS) activation, achieving effective PET degradation. Experimental results demonstrated that the optimized photocatalysis/PMS system achieved a 6.3-fold higher PET degradation efficiency compared to the photocatalysis system alone. The optimized system (30 % Co 1-x S/g-C 3 N 4 with 4 mM PMS and 1 mL H 2 O 2 under irradiation) achieved a remarkable PET degradation efficiency of 80.91 ± 1.30 %. Density functional theory (DFT) calculations unveiled the interfacial electronic structure of Co 1-x S/g-C 3 N 4 , demonstrating hole accumulation on g-C 3 N 4 and electron localization on Co 1-x S. Systematic comparative experiments confirmed the cooperative roles of heterojunction architecture, electron transfer dynamics, cobalt active sites, and H 2 O 2 in PMS activation. Degradation intermediates were identified by gas chromatography spectrometry (GC) and liquid chromatography-mass spectrometry (LC-MS), while electron spin resonance (ESR) and radical trapping experiments established SO 4 •− as the predominant reactive species. This study provides a new approach for the construction of S-scheme heterojunction photocatalysts, the activation by PMS, and the treatment of PET plastic in water.
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