Journal of Sulfur Chemistry
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2022
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IF 2.325
Qingqiang Tian,Lili Wang,Yahui Li
A new and convenient copper-catalyzed synthesis of alkyl sulfides has been accomplished using S-alkyl butanethioate as a thiol source. This catalytic protocol displayed a good functional groups tolerance and high efficiency. Both secondary and primary alkyl iodides can be used in this procedure. In addition, this method features operational simplicity and a wide substrate range, providing a complementary method for alkyl sulfide synthesis without requiring toxic thiols and noble metals.
研究领域:
有机化学
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合成化学
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DOI
高影响因子
Small
·
2024
·
IF 13
Shikai Wang,Dong Zhang,Xipeng Pu,Lizhi Zhang,Dafeng Zhang,Jizhou Jiang
Herein, guided by the results of density functional theory prediction, the study rationally designs a hollow core–shell FeNi 2 S 4 @ZnIn 2 S 4 (FNS@ZIS) Step-scheme (S-scheme) heterojunction for photocatalytic H 2 evolution with photothermal-assisted. The hollow FNS spheres offered substrate for coating the ZIS nanosheets, which can inhibit ZIS nanosheets from agglomerating into pellet, enrich the active site, increase specific surfaces, and raise the light absorption. Notably, due to its excellent photothermal properties, FNS core generated heat unceasingly inside under visible-light irradiation and effectively prevent the heat loss of the reaction system, which increased the local temperature of photocatalysts and thus accelerated the charge migration. In addition, the S-scheme heterojunction construction via in situ growth has a tight interface, which can facilitate the separation and transfer of carriers and achieve high redox potential. Owning to the distinctive construction, the hollow core–shell FNS@ZIS S-scheme heterojunction show extraordinary stability and photocatalytic H 2 evolution rate with 7.7 mmol h −1 g −1 , which is ≈15.2-fold than pristine ZIS. Based on the double evidence of theoretical predictions and experimental confirmations, the photothermal effect and electron transfer mechanism of this innovative material are investigated in depth by the following infrared thermography technology and deep DFT calculations.
研究领域:
材料科学
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能源化学
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理论计算
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DOI
PubMed
高影响因子
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
·
2025
·Vol. 41
·期 4
·1-15
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IF 4.2
Zhao Jing-yi,Gao Fan,Wu Mengru,Li Yang,Chen Yong,Xiao Zijun
Enantiopure ( S )-2-methylbutanoic acid [( S )-2-MBA] is a high-value chiral compound with applications in fragrances, pharmaceuticals, and agrochemicals. However, conventional chemical synthesis lacks stereoselectivity, while existing biosynthetic methods suffer from low yield and purity. Here, we report a novel microbial process using Bacillus spizizenii ATCC 6633 for efficient ( S )-2-MBA production via L-isoleucine catabolism. Through targeted screening of rhizospheric soil isolates and Bacillaceae strains, ATCC 6633 demonstrated superior performance, producing 3.67 g/L ( S )-2-MBA with 99.32% enantiomeric excess ( ee ) under optimized conditions (45 °C, 8% inoculation, 5 g/L glucose, and 8 g/L L-isoleucine). A 58.92% conversion efficiency was achieved, and a simplified purification process recovered 63.90% product with 97.32% purity. Mechanistic studies suggested glucose depletion triggered ( S )-2-MBA accumulation, aligning with starvation-induced secondary metabolism. This cost-effective, eco-friendly approach eliminates racemic separation steps and harsh reagents, positioning ATCC 6633 as a promising biocatalyst for sustainable ( S )-2-MBA production.
研究领域:
生物化学
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微生物学
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有机化学
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DOI
PubMed
高影响因子
npj Clean Water
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2024
·Vol. 7
·期 1
·1-14
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IF 10.4
Chen Weizi,Xing Zipeng,Zhang Na,Cheng Tao,Ren Bo,Liu Xinyue,Wang Zibin,Li Zhenzi,Zhou Wei
Hierarchical Bi 2 Fe 4 O 9 /BiOI S-scheme nanoflower heterostructures are prepared by hydrothermal method, which exhibit exceptional photo-piezoelectric catalytic performance. The tight binding between the sheets ensures the efficient electron transport, and provides a large interface area and adequate reaction sites for photo-piezoelectric catalytic reactions. At the same time, because the water flow in the water body produces hydraulic shear force on the material, the material produces piezoelectric effect. Bi 2 Fe 4 O 9 /BiOI exhibit a remarkable degradation efficiency of 99.4% for tetracycline and a hydrogen production rate of 4089.36 µmol h −1 g −1 . The observed behavior can be explained by the combined influence of the formation of S-scheme structure and the process of photo-piezoelectric catalysis, confirmed by in-situ XPS, transient/steady-state fluorescence and piezoelectric response force test. The excellent stability of the material suggests its possible use in the sectors of energy and environment. This work introduces novel concepts for the future advancement of photo-piezoelectric synergistic catalysis.
研究领域:
材料科学
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环境科学
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能源科学
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DOI
高影响因子
Journal of Physical Chemistry C
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2022
·
IF 4.177
Yuyao Zhang,Yu Tian,Wen Chen,Min Zhou,Siyong Ou,Yueli Liu
The CO2 photoreduction process is becoming a promising strategy to solve the energy shortage problem and global warming in recent years. How to promote the separation of photoinduced carriers has attracted attention for the improvement of photocatalytic CO2 reduction. In the present work, an S-scheme heterojunction of Bismuthene/CsPbBr3 quantum dots (Bismuthene/CsPbBr3 QDs) is constructed as the photocatalyst for CO2 conversion. As a result, Bismuthene/CsPbBr3 QDs exhibit an optimal CH4 evolution rate of 43.1 μmol h–1 g–1 with 84.53% selectivity over CH4 under ultraviolet–vis light (UV–vis) irradiation. Construction of the S-scheme heterojunction with a narrow band gap semiconductor is the main factor for improving the photocatalytic performance, as the S-scheme heterojunction can suppress the recombination of photoinduced carriers and retain redox ability. The narrow band gap semiconductor Bismuthene can enhance light absorption abilities. This work probably provides some insights for the designing of heterojunction photocatalysts and the improvement of photocatalytic performance.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
INORGANIC CHEMISTRY
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2021
·
IF 5.165
Yi-Xin Zhang,Yun-Qiao Tang,Zheng Ma,Ming-Yu Hu,Jing Feng,Zhen-Hua Ge
In this study, Cu2Se1–xSx (x = 0.1, 0.3, and 0.5) alloy powders were prepared by the hydrothermal synthesis method. In the subsequent sintering process, the spontaneous in situ phase separation process of the sample forms a two-phase hybrid structure. The generated Cu2S precipitates in the Cu2Se matrix noticeably enhance phonon scattering, which is beneficial for low thermal conductivity without significantly affecting the electrical transport performance. Ultimately, an optimized thermoelectric performance was obtained in Cu2Se0.9S0.1, reaching a peak zT value of 1.43 at 773 K, the optimum value among the Cu–Se–S systems at this temperature.
研究领域:
材料科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
Food Science and Human Wellness
·
2023
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IF 7
Linglin Fu,Rongrong Wang,Jinru Zhou,Chong Wang,Yanbo Wang
N -glycans in many proteins are of great concern because of their strong association with food allergies. Triticum aestivum (bread wheat), a major food crop, is known as one of the “Big Eight” allergenic groups. However, little research has been done about N -glycans in wheat glycoproteins. In this study, a soluble wheat glycoprotein was purified from wheat and further identified as globulin-1 S allele (GSA). The wheat GSA displayed significant IgE-binding activity. Moreover, one N -glycosylation site and 6 kinds of N -glycans were identified by mass spectrometry, including 3 high mannose types and 3 complex types. Furthermore, the IgE-binding activity of wheat GSA is proved to be reduced by the removal of N -glycan, thermal treatment (temperatures > 80 °C), and strong acidic treatment (pH 3.0). These findings would provide a better understanding of the effects of N -glycosylation, thermal treatment, and acidic treatment on the molecular characteristics of GSA, and further provide new insights into the development of hypoallergenic wheat products.
研究领域:
食品科学
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植物生物学
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免疫学
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DOI
高影响因子
Journal of Water Process Engineering
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2023
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IF 7
Junhui Yi,Runkun Xie,Ruilong Liu,Minghao Li,Haoxian Zeng,Qingqing Chen,Linxuan Cai,Ning Li,Changlin Yu,Zhenghui Liu,Dehao Li
The problem of environmental pollution caused by the frequent use of antibiotics has attracted extensive attention. The heterojunction composed of various bismuth oxyiodide (such as BiOI, Bi 4 O 5 I 2 , Bi 5 O 7 I, etc.) were widely used in the treatment of antibiotic wastewater. Herein, a hollow BiOI/Bi 5 O 7 I hierarchical microsphere was constructed in-situ by annealing BiOI precursors synthesized by the solvothermal method. The phase transition temperature for the formation of heterojunctions has been investigated in detail. The obtained products were characterized by various technologies including transmission electron microscope (TEM), X-ray photon-electron spectroscopy (XPS), and so on. Experimental results suggested that 390-BiOI/Bi 5 O 7 I microsphere with hollow structure exhibits the optimal performance and maximum photocurrent response under visible light irradiation. The efficiency for degradation of tetracycline hydrochloride (TH) was up to 83 % in 100 min. The value still maintained at 95 % after the catalyst has been reused for four times. The capture experiment indicates that produced ·O 2 − played the most important role. But formed h + and ·OH played a secondary role. The degradation intermediates were analyzed by Liquid Chromatography-Mass Spectrometry (LC-MS). Accordingly, the possible degradation pathways are proposed. An S-scheme based heterostructure photocatalytic mechanism is proposed aiming to explain the enhanced catalytic performance. The BiOI/Bi 5 O 7 I heterojunction with exceptional activity and stability is bound to expand applications in the field of water treatment .
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2023
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IF 16.5
Zhihan Yu,Chen Guan,Xiaoyang Yue,Quanjun Xiang
Enhancing the carrier separation in graphitized carbon nitride (g-C 3 N 4 ) is advantageous for improving its photocatalytic activity. Herein, we propose a feasible method for preparing CN-C by thermal polymerization to gradually infiltrate carbon rings (C-rings) into the surface of crystalline carbon nitride (CN), enabling photogenerated electrons to be transferred rapidly between the CN inner layers and the CN/C outer layer. Successful penetration and distribution of carbon rings into carbon nitride were confirmed by secondary ion mass spectroscopy using ratio analysis of C and N elements at various depths of the prepared photocatalyst. Theoretical calculations indicated that CN and CN/C in the molecule generated different Fermi levels to form an S-scheme homojunction, establishing appropriate built-in electric fields and thus enabling interlayer charge migration. Moreover, the overlap of the conjugate plane of C-rings with carbon nitride led to the formation of photogenerated in-plane charge transfer tunnels. The two-electron transfer tunnels greatly improved the dissociation efficiency of photogenerated electrons. The prepared sample loaded with 3 wt% Pt as a co-catalyst for hydrogen production under visible light irradiation, and the prepared optimal sample CN-C showed a maximum quantum efficiency of 15.56% for photocatalytic H 2 evolution at 385 nm. This research introduces a new idea for constructing a directional transfer path for charge carriers in-plane and intralayer.
研究领域:
材料科学
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光催化
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产品关联
DOI
高影响因子
ANALYST
·
2022
·Vol. 147
·期 16
·3675-3683
·
IF 5.227
Chunyu Gao,Ziyi Ding,Jiangkun Tan,Jinmao You,Zan Li
Studies have shown that homocysteine (Hcy) levels are closely related to cardiovascular and cerebrovascular diseases. In this work, we have developed and synthesized three copper complexes, F542-Cu2+, F508-Cu2+, and F465-Cu2+ for Hcy detection. The different binding constants (Ks) of the copper complexes endow them with dramatic reactivity toward biothiols. The pyridine-containing tetraazacycle was employed in the construction of F542-Cu2+, which renders the medium Ks value for the copper complex compared with cyclen and TACN and effectively prevented the disintegration of the complexes. Pyridine-containing tetraazacycle provided the basis and possibility for the hypothesis for the reduction of Cu2+ by biothiols to shape into a stable six-membered ring structure. The obtained results verified that F542-Cu2+ could be utilized to specifically probe Hcy in a switched-on fluorescence mode. F542-Cu2+ exhibited excellent environmental stability, superior sensitivity, and outstanding selectivity toward Hcy under physiological conditions. The mechanism of Hcy specificity was confirmed to be related to the generation of Hcy-induced six-membered ring by fluorescence imaging, time-dependent fluorescence spectra, ESI-MS, and electron paramagnetic resonance (EPR) analyses. Furthermore, we exploited the application of F542-Cu2+ and developed a strategy for evaluating the activity of S-adenosylhomocysteine hydrolase (AHCY) in vitro by fluorescence analysis. More importantly, real-time in vivo evaluation of the enzymatic activity of AHCY was realized and assisted by our probe, providing the possibility of opening up a new avenue for enzymatic reaction assessment.
研究领域:
生物化学
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医学诊断
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分子生物学
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产品关联
DOI
PubMed
高影响因子
RENEWABLE ENERGY
·
2025
·
IF 9.1
Lina Dai,He Wang,Liru Cui,Yanduo Liu
Single photocatalysts face problems such as easy recombination of photo-generated charge carriers, weak oxidation-reduction ability, and narrow spectral response range, which greatly restrict their practical applications in energy and environmental fields. This article constructs a new type of Cu-Co Prussian blue analogues S-scheme photocatalytic material. The material is composed of oxidized photocatalysts (Ag 3 PO 4 ) and reduced photocatalysts (Cu-Co PBAs). By utilizing the characteristics of Cu-Co Prussian blue analogues photocatalysts, such as high conduction band position, rich catalytic sites, and small band gap, photocatalytic efficiency can be significantly enhanced. The CO production rate is 36.3 μmol/g/h, and the selectivity can reach 93.8 %, which is far superior to the current mainstream photocatalytic system. By studying the construction method and CO 2 reduction performance of the composite photocatalyst, the structure-performance relationship is clarified. The steady-state photocurrent spectroscopy reveals the S-scheme mechanism photocarrier transfer and separation kinetics. Techniques such as near-ambient pressure X-ray photoelectron spectroscopy reveal the interface electron transfer mechanism. In-situ Diffuse Reflectance Infrared Fourier Transform Spectroscopy and Density Functional Theory calculations are used to study the formation of reaction intermediates and reveal the catalytic mechanism. This study will offer critical understanding for advancing developments of selective photocatalysts aimed at sustainable CO 2 utilization.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Wenxue Zhao,Aihua Yan,Zigao Su,Fei Huang,Jixu Zhang,Ye Gao,Huaqi Yuan,Bolei Hui,Heng Wang
ZnIn 2 S 4 is a promising and typical semiconductor for photocatalytic water splitting into hydrogen production. However, the low charge-carrier utilization restricts its hydrogen evolution performance and practical application. In this work, a synergistic strategy of sulfur vacancy (S v ), internal electric field (IEF) and Mo-S bond was utilized for improving the charge-carrier utilization of MoS 2 /S v -MnS/ZnIn 2 S 4 composites. In particular, Z-scheme S v -MnS/ZnIn 2 S 4 heterojunction not only tackled the charge-carrier recombination problem but also improved the redox capability. Meanwhile, Schottky-type MoS 2 /S v -MnS contact further promoted the charge transfer through Mo-S bond “bridge”, accelerated the surface hydrogen reduction reaction kinetics, and thus boosted the charge-carrier utilization. As a result, the optimal MoS 2 /S v -MnS/ZnIn 2 S 4 catalysts could expeditiously produce 1.75 mL of hydrogen production within 3 h, and achieve a photocatalytic hydrogen evolution rate of 13.02 mmol g -1 h -1 . This work provides an ingenious method to synthesize ZnIn 2 S 4 -based photocatalysts with highly-efficient charge-carrier utilization.
研究领域:
材料科学
·
能源化学
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产品关联
DOI
高影响因子
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