Advanced Energy Materials
·
2023
·Vol. 13
·期 12
·2203519
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IF 27.8
Huijun Liao,Zizhen Zhou,Sikang Zheng,Yuling Huang,Guang Han,Guoyu Wang,Zhengyong Huang,Xu Lu,Jian Li,Xiaoyuan Zhou
High-temperature thermoelectric (TE) materials are common wide-gap semiconductors that are used in order to prevent the bipolar effect. Here, a potential high-temperature n -type TE material SmS with a simple NaCl structure that demonstrates a narrow band gap of ≈0.25 eV is reported. As expected, a temperature-dependent carrier concertation is observed, which is attributed to the thermal activation of electrons from valence band edge to conduction band. Interestingly, the intrinsic activation does not cause any sign of a bipolar effect. Density functional theory calculations suggest that the phenomenon originates from the strong electron-hole asymmetry in the electronic structure and the electron-to-hole conductivity ratio is as high as 700–900. As a result, the activated minority carriers barely participate in the TE transport and the maximum power factor reaches 1.41 mW K −2 m −1 at 1123 K. By further alloying with Se to reduce lattice thermal conductivity, a peak zT of ≈1.1 is obtained in Sm 1.08 S 0.78 Se 0.22 at 1123 K, which is among the best n -type high-temperature thermoelectrics. This study proves high-temperature TE materials can be found in narrow-gap semiconductors, which significantly enriches the scope of possibilities for novel TE materials.
研究领域:
材料科学
·
凝聚态物理
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产品关联
DOI
高影响因子
Frontiers in Microbiology
·
2025
·
IF 4.5
Xuan Bo,Yong Liu,Hong Zhang,Chao Su,Yang Miao
Spent mushroom substrate (SMS) is a promising organic amendment for remediating degraded soils, yet its effectiveness is often limited by poor compost maturity and stability. This study aimed to enhance the quality and functionality of SMS compost through microbial inoculation and to evaluate its impact on soil improvement and plant growth. Three plant growth-promoting strains [Bacillus subtilis (B. subtilis), Azotobacter chroococcum (A. chroococcum), and Paenibacillus mucilaginosus (P. mucilaginosus)] and their combination as a mixed microbial inoculant (MMI) were used in composting. Subsequent pot experiments assessed changes in soil physicochemical properties, nutrient levels, microbial diversity, and the growth of Pinus sylvestris seedlings. Results showed that SMS amended with MMI significantly improved soil porosity, pH, and nutrient content, while enriching beneficial microbial communities dominated by Proteobacteria and Basidiomycota. Moreover, MMI treatment notably enhanced plant height, stem diameter, and chlorophyll content compared to control treatments. These findings highlight the synergistic effect of mixed microbial inoculants in optimizing SMS compost and promoting soil and plant health. The approach offers a sustainable strategy for the circular reuse of agricultural waste and effective restoration of degraded soils.
研究领域:
土壤科学
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微生物学
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植物学
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农业可持续性
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环境修复
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DOI
PubMed
高影响因子
NUCLEIC ACIDS RESEARCH
·
2022
·Vol. 50
·期 10
·5850-5863
·
IF 19.16
Lei Yixuan,Fei Panyu,Song Bin,Shi Wenjia,Luo Cheng,Luo Dahai,Li Dan,Chen Wei,Zheng Jie
DDX58 encodes RIG-I, a cytosolic RNA sensor that ensures immune surveillance of nonself RNAs. Individuals with RIG-IE510V and RIG-IQ517H mutations have increased susceptibility to Singleton-Merten syndrome (SMS) defects, resulting in tissue-specific (mild) and classic (severe) phenotypes. The coupling between RNA recognition and conformational changes is central to RIG-I RNA proofreading, but the molecular determinants leading to dissociated disease phenotypes remain unknown. Herein, we employed hydrogen/deuterium exchange mass spectrometry (HDX-MS) and single molecule magnetic tweezers (MT) to precisely examine how subtle conformational changes in the helicase insertion domain (HEL2i) promote impaired ATPase and erroneous RNA proofreading activities. We showed that the mutations cause a loosened latch-gate engagement in apo RIG-I, which in turn gradually dampens its self RNA (Cap2 moiety:m7G cap and N1-2-2′-O-methylation RNA) proofreading ability, leading to increased immunopathy. These results reveal HEL2i as a unique checkpoint directing two specialized functions, i.e. stabilizing the CARD2-HEL2i interface and gating the helicase from incoming self RNAs; thus, these findings add new insights into the role of HEL2i in the control of antiviral innate immunity and autoimmunity diseases.
研究领域:
免疫学
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分子生物学
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遗传学
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生物化学
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产品关联
DOI
PubMed
高影响因子
PHOTOCHEMISTRY AND PHOTOBIOLOGY
·
2024
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IF 2.6
Ting-Ting Li,Bing-Bing Shou,Lu Yang,Hai-Tao Ren,Xian-Jin Hu,Jia-Horng Lin,Tao Cai,Ching-Wen Lou
Combining photodynamic antimicrobials with nonwovens is prospective. However, common photosensitizers still have drawbacks such as poor photoactivity and the inability to charge. In this study, a photodynamic and high-efficiency antimicrobial protective material was prepared by grafting bis benzophenone-structured 4,4-terephthaloyl diphthalic anhydride (TDPA) photosensitizer, and antimicrobial agent chlorogenic acid (CA) onto spunbond-meltblown-spunbond (SMS) membranes. The charging rates for · OH and H 2 O 2 were 6377.89 and 913.52 μg/g/h. The light absorption transients structural storage remained above 69% for 1 month. High electrical capacity remained after seven cycles indicating its rechargeability and recyclability. The SMS/TDPA/CA membrane has excellent bactericidal performance when under illumination or lightless conditions, and the bactericidal efficiency of Escherichia coli and Staphylococcus aureus reached over 99%. The construction of self-disinfection textiles based on the photodynamic strategies proposed in this paper is constructive for expanding and promoting the application of textile materials in the medical field.
研究领域:
材料科学
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纺织工程
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光动力学
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抗菌技术
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2018
·
IF 3.789
Yongkui Chen,Zhiyong Li,Huiyong Wang,Yuanchao Pei,Yunlei Shi,Jianji Wang
A new class of donor–acceptor Stenhouse adduct (DASA)-functionalized silica microspheres (SMs) is designed and described to formulate Pickering emulsions with inversion property and large polarity change upon visible light irradiation. By tuning the hydrophilicity of the functional SM particles with visible light, these Pickering emulsions can easily perform inversion from water-in-oil to oil-in-water. The inversion performance of the emulsions is ascribed to DASA photoisomerization from an extended, hydrophobic, and intensely purple-colored triene to a compact, zwitterionic, and colorless cyclopentenone upon irradiation with visible light. This unique inversion behavior has been applied to control encapsulation and the release of fluorescein sodium salt.
研究领域:
材料科学
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化学
·
纳米技术
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胶体科学
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光化学
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Deshun Huang,Guozong Yue,Jing Zhu,Feiyi Liao,Yihong Zhao,Luming Yang
With the urgent need for oil/organic solvents spills disposal, the development of new sorbents with low cost, high sorption capacity, good selectivity and reusability is required. In the current work, three-dimensional structured absorbents have been rapidly fabricated by ultraviolet (UV)-crosslinking of styrene- block -butadiene- block -styrene (SBS) copolymers via thiol-ene reaction in 60 s, using poly-(mercaptopropyl)methylsiloxane (SMS) as crosslinker. The SBS-SMS absorbents were characterized by FT-IR, SEM, XRD, tensile strength, thermogravimetric, gel fraction and water contact angle analysis, which showed high tensile strength, good thermal stability, hydrophobicity, and acceptable gel content. The absorption capacity investigations were carried out in 7 types of organic liquids and 2 types of oils. The SBS-SMS 0.005 exhibited the highest absorption performance in different organics, with the capacities of 74.6 g/g for dichloromethane, 20.1 g/g for kerosene, and 12.8 g/g for diesel oil, respectively. The impacts of sheet thickness on the absorption and desorption kinetics were studied, and the results showed that thinner absorbents illustrated faster absorption and desorption speed. Additionally, the SBS-SMS absorbents showed good selectivity and effectiveness in organic solvents/oil separation from water (separation efficiency > 93 %), well oil retention ability and oil desorption efficiency, floating properties, easy collection, as well as good reusability upon ten absorption-desorption cycles. The current SBS-SMS absorbents should have great potential in practical application for efficient oil/water separation as well as radioactive organic waste liquid treatment.
研究领域:
材料科学
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环境工程
·
化学工程
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DOI
高影响因子
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