LANGMUIR
·
2022
·
IF 4.331
Shenjie Li,Xiaoyu Gong,Zhiqiang Li,Minghui Yu,Yanyan Chen,Hao Yu,Shuang Wang,Hongyu Shao,Minghao Dou,Yuye Cheng
A novel interfacial reaction nucleation mechanism for the preparation of water-soluble Ag–In–S quantum dots (AIS QDs) was proposed in which interfacial acid regulates the concentration of hydroxide ions outside the complex and sulfur sources attack cations at the interface of the complex, covalent bonds between cations and sulfur sources are formed at the interface of the complex, and the nucleation and growth of crystals is finished at room temperature. By bypassing the heating process normally necessary for crystal nucleation and growth, AIS QDs can be produced on a large scale under simple, mild conditions. At the same time, the characteristics of this mechanism enable AIS QDs to be directly synthesized in an organic pollutant solution. This study represents a significant advance in the mechanism of crystal synthesis and contributes to the photocatalytic decomposition of organic pollutants from theory to practice.
研究领域:
材料科学
·
环境科学
·
化学工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jiaoping Si,Hongjing Liu,Wendong Zhang,Dengyu Jiao,Wangxing Ai,Yuerui Ma,Lihuan Feng,Xing’an Dong,Wenjie He,Peng Chen
The catalytic conversion of nitrogen oxides (NO x ) to non-toxic products has emerged as a critical strategy for air pollution control under stringent emission regulations. Photocatalytic NO x removal performance highly depends on the transmission of photogenerated electrons and the amount of reactive oxygen species (ROS) generated. Herein, the Bi/BiOCl/SrTiO 3 heterostructure photocatalyst was prepared by a simple in situ synthesis method to address the limitations of conventional NOx removal systems. Due to the synergistic effect of bismuth (Bi) surface plasmon resonance (SPR) and the built-in electric field in BiOCl/SrTiO 3 S-scheme heterojunction, Bi/BiOCl/SrTiO 3 showed strong light absorption ability and high charge separation efficiency, with the highest NO removal efficiency reaching 70 %. The enhanced electronic interaction between Bi and BiOCl/SrTiO 3 induced Bi-O covalent bonds with the BiOCl layer to facilitate fast charge separation, promoting the rapid transfer of interfacial photogenerated carriers, this process induces the activation of O 2 and H 2 O to form reactive oxygen species (ROS) to promote the oxidative removal of NO. This study provides new insights into the development of effective photocatalysts with fast charge separation by synergistic metal active sites and built-in electric field of heterojunction for air pollutant purification.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
PubMed
高影响因子
APPLIED ORGANOMETALLIC CHEMISTRY
·
2024
·Vol. 38
·期 6
·e7500
·
IF 3.7
Yu Zhang,Pei Wang,Gaiying Han,Zhaoyang Wang,Haitao Yu,Zhenzi Li,Xuepeng Wang,Ying Xie,Wei Zhou
Defects engineering is significant for photocatalytic environment remediation. To this end, visible-light-driven α-Fe 2 O 3 /ZrO 2-x S-scheme heterojunction photocatalysts with optimal oxygen vacancy (O v ) defects are successfully synthesized via a two-step method. Compared with pristine UiO-66-NH 2 -derived ZrO 2-x and α-Fe 2 O 3 , the heterojunction photocatalysts exhibit a wider range of visible light response and higher efficiency in separating photogenerated electron–hole pairs. Among them, the 5% α-Fe 2 O 3 /ZrO 2-x sample shows the best photocatalytic performance to the degradation of tetracycline (TC) (89.3%), in which the pseudo-first-order kinetic rate constants are 8.20 and 16.75 times that of pristine ZrO 2-x and α-Fe 2 O 3 , respectively. The outstanding photocatalytic degradation efficiency can be attributed to both the narrow-bandgap ZrO 2-x with visible light response and the formation of α-Fe 2 O 3 /ZrO 2-x S-scheme heterojunctions. During the formation of heterojunctions, the concentration of oxygen vacancies (O v ) at the interface of α-Fe 2 O 3 /ZrO 2-x decreases monotonically with the increasing loading of α-Fe 2 O 3 , thereby altering the electronic structure of the photocatalyst and forming the heterojunction firmly. In addition, the high stability implies the potential applications in fields of environment.
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
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.
研究领域:
化学
·
材料科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Lele Wei,Ru Song,Jiarui Song,Yaping Li,Yina Nie,Lin Liu,Jun Wan
To achieve efficient artificial photosynthesis of hydrogen production coupled with benzyl alcohol oxidation, it is imperative to address the key kinetic bottlenecks that limit photocatalysis performance comprehensively. Herein, we synthesized a D–A conjugated polymer pyrene-thienothiophene (PyTT) containing thiophene rings acceptor unit via a direct C–H arylation reaction. Subsequently, an innovative ZCS/PyTT inorganic/organic S-scheme heterojunction was successfully constructed by synthesizing Zn 0.5 Cd 0.5 S (ZCS) nanocrystals in situ on the surface of PyTT nanosheets. By enabling this design, the optimized ZCS/5PyTT heterojunction exhibits significantly enhanced rates of H 2 and benzaldehyde (BAD) production at 4.52 and 4.12mmol g −1 h −1 respectively under only two sun light intensity, which are 2.69 and 2.80 times higher than pristine ZCS. The outstanding photocatalytic performance can be attributed to the efficient charge separation and transfer efficiency, enhanced light absorption capability, as well as increased concentration of active carriers in reaction. Particularly, the interface charge transfer mechanism involved in ZCS/PyTT S-scheme heterojunction is comprehensively investigated through in situ irradiated X-ray photoelectron spectroscopy (XPS) and photo-irradiated Kelvin probe force microscopy (KPFM) analyses. This study provides a protocol for preparing specific inorganic/organic S-scheme heterojunction photocatalysts aimed at achieving efficient cooperative photo-redox coupling of H 2 production and organic transformations.
研究领域:
材料科学
·
化学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Kuan Wang,Yi Wang,Dan Wang,Yuan-Xiao Du,Xin-Peng Li,Zhen-Hong He,Huan Wang,Weitao Wang,Yang Yang,Zhao-Tie Liu
The exploration of cost-efficient, environmentally friendly, and high-efficacy photocatalysts for the enhanced selective photooxidation of cyclohexane to KA oil (cyclohexanone (CHA-one) and cyclohexanol (CHA-ol)) is a pivotal challenge in the industrial realm. Herein, the present study focuses on the synthesis of needle-like S-scheme heterojunction photocatalysts with oxygen vacancies, which are achieved by the needle growth integration of nano-sized Nb 2 O 5 particles onto the BiOCl nanosheets. Remarkably, the 40 % Nb 2 O 5 /BiOCl composites exhibited superior performance in the solvent-free photooxidation of cyclohexane at room-temperature and under atmospheric pressure. The production yield of KA oil was 180.3 μmol (CHA-one/CHA-ol molar ratio = 3.5), and exceptional selectivity towards KA oil, reaching up to 99.3 %. The enhanced photocatalytic efficiency in cyclohexane oxidation can be attributed to the unique S-scheme heterogeneous interfaces with specific nanoneedle morphology, which result in the enhanced photonic absorption, effective charge carrier separation, a high density of oxygen vacancies, and the exposure of the highly reactive (001) plane of BiOCl. The excellent interfacial charge separation and transfer pathways of S-scheme heterojunction are disclosed by the in-depth EPR analysis and DFT calculations. These insights highlight the significant potential of the needle-like Bi-based S-scheme heterojunction photocatalysts for the efficient photooxidation of saturated alkanes.
研究领域:
材料科学
·
催化化学
·
环境科学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Hui Feng,Wensheng Liu,Xinke Hu,Liufang Chen,Aiming Tang,Haiping Wang,Yao Huang
A novel (MoS2/C3N4)-sensitized TiO2 nanotube array (NTA) photoelectrode has been prepared by a simple hydrothermal synthesis and high-temperature calcination. When petal-like MoS2 nanosheets are uniformly distributed on the surface of TiO2 nanotubes coated with layered C3N4, a notable red-shift and high absorption are observed in the visible light region. The photocurrent density (mA cm−2) systematically increases from TiO2 NTAs (0.97), C3N4/TiO2 (1.25), MoS2/TiO2 (1.50), to TiO2/MoS2/C3N4 (1.97) under visible light irradiation, due to the dual S-scheme semiconductor heterostructures comprising multiple components with a staggered band offset. Such a heterostructure exhibits an enhanced photocatalytic performance towards the degradation of organic contaminants, e.g. P-nitrophenol (PNP) and rhodamine B (RhB).
研究领域:
材料科学
·
光催化
·
环境功能材料
·
纳米材料
·
半导体物理
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2022
·
IF 5.895
Chao Hu,Ji-Yuan Liu,Wei Wang,David Mota-Sanchez,Shun He,Yu Shi,Xue-Qing Yang
Pest management is mostly accomplished by the use of insecticides. However, the overuse of insecticides has led to the development of resistance. Glutathione S-transferases (GSTs) are vital detoxification enzymes involved in insecticide resistance in insects. In this study, we report the involvement of GSTs in insecticide resistance to lambda-cyhalothrin in Cydia pomonella, a globally quarantined fruit pest. A total of 25 GST, including 22 cytosolic genes and 3 microsomal genes, are identified from the genome database of C. pomonella. These cytosolic genes are further classified into six classes, including four in delta, eight in epsilon, three in omega, three in sigma, one in theta, and one in zeta class, as well as two unclassified genes. The real-time quantitative polymerase chain reaction (RT-qPCR) shows that the majority of these genes are mainly expressed throughout the larval stage and in the midgut of the fourth-instar larvae. Exposure to an LD10 dose of lambda-cyhalothrin resulted in the upregulation of 17 GST genes. Moreover, mRNA levels of most GST genes, with the exception of CpGSTe6, CpGSTd2, CpGSTd4, and CpGSTz1, are considerably higher in a lambda-cyhalothrin-resistant population (ZW_R) than those of susceptible strains. Recombinant CpGSTd1, CpGSTd3, CpGSTe3, and CpGSTs2 can bind and metabolize lambda-cyhalothrin, with the highest metabolic rate observed for CpGSTd3 but no metabolite(s) was detected, supporting the role of GSTs in sequestration of lambda-cyhalothrin. Molecular dynamics simulation analysis indicates that key residues of hydrophobic pocket-derived lipophilic energy S(lipo) interactions with a hydrophobic pharmacophore of lambda-cyhalothrin are crucial for metabolism by CpGSTd3 and further lead to resistance. Our study is the first to experimentally confirm the involvement of GSTs in lambda-cyhalothrin resistance via sequestration and provides new insights into resistance management in C. pomonella.
研究领域:
昆虫学
·
分子生物学
·
害虫管理
·
毒理学
✓ 已验证
DOI
PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Ting Zhang,Ruipeng Hou,Rong Wu,Chen Zhang,Yindi Yu,Wenlong Yang,Shunhang Wei
Limited by rapid carrier recombination, the photocatalytic hydrogen peroxide (H 2 O 2 ) generation performance of Zn 2 In 2 S 5 is far from practical application. Herein, Zn 2 In 2 S 5 /In 2 S 3 S-scheme heterostructures were constructed by employing a one-step hydrothermal strategy that precisely adjusted the Zn:In precursor ratio. Thanks to the band structures with sufficiently redox ability of In 2 S 3 and Zn 2 In 2 S 5 , as well as enhanced carrier separation and transfer efficiency, the optimal Zn 2 In 2 S 5 /In 2 S 3 heterostructures (ZIS/In 2 S 3 -1:4) achieved a sacrificial-agent-free H 2 O 2 production rate of 339.5 μM h −1 under AM 1.5 irradiation, which approximately 1.7 times higher than that of pristine Zn 2 In 2 S 5 . Meanwhile, it also exhibited good H 2 O 2 evolution rate under visible-light irradiation and reusability. Its apparent quantum yield (AQY) at 380 nm, 420 nm, and 450 nm reached to 1.32 %, 1.11 %, and 0.63 %, respectively. In addition, the introduction of In 2 S 3 inhibited H 2 O 2 decomposition and enhanced the selectivity of H 2 O 2 production. In the photocatalytic process, superoxide radicals and holes were the key reactive substances, thereby H 2 O 2 was generated via a two-step single-electron O 2 reduction reaction process and one-step two-electron water oxidation reaction process. The construction strategy of the Zn 2 In 2 S 5 /In 2 S 3 S-scheme heterostructures is expected to provide a new perspective for the design of photocatalysts for efficient H 2 O 2 synthesis.
研究领域:
材料科学
·
光催化
·
能源化学
·
纳米材料
·
环境功能材料
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2022
·
IF 11.357
Peizeng Yang,Jiating Liu,Gregory V. Korshin,Yuefei Ji,Junhe Lu
Tetrabromobisphenol S (TBBPS) is a brominated flame retardant and a contaminant of emerging concern. Several studies found that sulfate radical (SO4•–) oxidation is effective to degrade TBBPS. Here, we demonstrate that the presence of nitrite (NO2–) at environmentally relevant levels causes dramatic changes in the kinetics and pathways of TBBPS degradation by SO4•–. Initially, NO2– suppresses the reaction by competing with TBBPS for SO4•–. At the same time, SO4•– oxidizes NO2– to form nitrogen dioxide radicals (NO2•), which actively react with some key TBBPS degradation intermediates, thus greatly altering the transformation pathway. As a result, 2,6-dibromo-4-nitrophenol (DBNP) becomes the primary TBBPS product. As TBBPS undergoes degradation, the released bromide (Br–) is oxidized by SO4•– to form bromine radicals and free bromine. These reactive bromine species immediately combine with NO2• or NO2– to form nitryl bromide (BrNO2) that in turn attacks the parent TBBPS, resulting in its accelerated degradation and increased formation of toxic nitrophenolic byproducts. These results show that nitryl halides (e.g., BrNO2 or ClNO2) are likely formed yet inadequately recognized when SO4•– is applied to remediate halogenated pollutants in the subsurface environment where NO2– is ubiquitously found. These insights further underscore the potential risks of the application of SO4•– oxidation for the remediation of halogenated compounds in realistic environmental conditions.
研究领域:
环境科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2015
·Vol. 182
·期 15
·2593-2600
·
IF 3.741
Diao Chun-peng,Yang Xiao,Sun Ai-ling,Liu Ren-min
Vortex-assisted liquid-liquid microextraction (VALLME) for the rapid extraction of trace bisphenol S (BPS) in environmental water is presented. In order to simplify the procedure, an in-house fabricated glass dropper with different internal diameters of the two ends is exploited. The solidification-melt step was cut in VALLME by means of the in-house fabricated glass dropper. After extraction with 2-ethylhexanol, BPS was detected by high performance liquid chromatography (HPLC) with ultraviolet (UV) detection. Factors such as type and volume of extraction solvent, extraction time, sample pH and ionic strength were evaluated. Under optimized conditions, the linearity range varied from 0.10 to 50 μg L −1 with a squared regression coefficient r 2 of 0.9995. The relative standard deviation (RSD) is 2.3 % ( n = 7). The limit of detection (LOD) and limit of quantification (LOQ) are 0.02 and 0.06 μg L −1 , respectively. The presented method was employed for the determination of BPS in real water samples. The relative recoveries are 81.8–87.3 % for the two real water samples. The method is shown to be economical, fast and can be routinely performed.
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研究领域:
分析化学
·
环境科学
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Liyue Hou,Zhen Zhang,Siqi Li,Ligai Bai
Back ground The concentration of S-adenosylhomocysteine in human urine is associated with atherosclerosis and may be used as an early marker of atherosclerosis, and accurate quantitative analysis of S-adenosylhomocysteine in high-risk group urine is significant for the prevention and early diagnosis. Therefore, monitoring of S-adenosylhomocysteine in the urine of high-risk groups may provide some reference for the prevention and early diagnosis of atherosclerosis. Due to the complexity of biological samples and the low content of target component, sample pretreatment is a prerequisite to ensure the accuracy of quantitative analysis results. Results In this study, we developed an adsorbent having phenylboronic acid group in a tube-tip through polymerization reaction using 4-allylcarbamoylphenylboronic acid as the monomer, aiming to the cis -diol structure of the S-adenosylhomocysteine. The prepared adsorbent not only has a macro-porous structure, but also has a high specific surface area of 428 m 2 /g, which is beneficial to improve the mass transfer and enhance the sample load. The synthesized adsorbent was used for the extraction of S-adenosylhomocysteine from the human urine, and the results indicated that the S-adenosylhomocysteine concentration in the urine of atherosclerosis patients is much higher than that of healthy. Furthermore, the adsorbent exhibited specific selectivity due to the boron affinity interaction force between the phenylboronic acid group on the surface of the adsorbent and the cis -diol structure of S-adenosylhomocysteine: the cis -diol structure of S-adenosylhomocysteine can form a five-membered cyclic esters with the phenylboronic acid in the adsorbent surface under a basic condition, and the five-membered cyclic esters opens and releases the cis -diol structure under acidic condition. Significance The methodological validation showed that the present method is feasible for the quantitative analysis of S-adenosylhomocysteine in human urine. This work presents a robust method for the specific extraction of S-adenosylhomocysteine from human urine and offers a valuable approach for the extraction of other components having cis -diol structure from biological samples.
研究领域:
医学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）