JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2025
·
IF 4.9
Nannan Huang,Shuhao Liang,Xiangyang Liang,Huining Chai,Yingjie Sun,Lili Lyu,Weiqiang Tan
The interfacial compatibility of heterojunction photocatalysts critically governs the interaction modes between constituent materials. Herein, a flower-like Bi-BDC-NH 2 /Ag 2 CO 3 heterostructure was fabricated via a simple ion-exchange solution method, serving as a robust photocatalyst for the efficient photocatalytic reduction of Cr(VI) in simulated wastewater under visible-light irradiation. Ag 2 CO 3 nanosheets were in-situ grown on the surface of three-dimensional Bi-BDC-NH 2 , forming an Ag 2 CO 3 -on-Bi-BDC-NH 2 type II heterojunction that establishes intimate interfacial contact, significantly accelerating the charge and mass transport dynamics. In comparison with pure Bi-BDC-NH 2 and Ag 2 CO 3 , the optimal Bi-BDC-NH 2 /Ag 2 CO 3 -50 (with a weight ratio of 0.5:1) exhibited dramatically enhanced photocatalytic activity, achieving 99% Cr(VI) reduction within 2 hours under visible light (>420 nm, 150 W xenon lamp). Mechanistic investigations, including energy band structure analysis, radical trapping experiments, and photoelectrochemical measurements, revealed that the heterojunction interface significantly promotes the separation and transfer of photogenerated electron-hole pairs. This work provides valuable insights into the rational design of MOF-based heterojunction photocatalysts and their applications in environmental remediation.
研究领域:
环境科学
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材料科学
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化学工程
·
光催化
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产品关联
DOI
高影响因子
BIOMEDICINE & PHARMACOTHERAPY
·
2018
·
IF 3.457
Qinran Sun,Fangming Liu,Min Gao,Wenqing Wu,Weiju Liu,Cong Yin,Zhongshu Zhu,Lijin Zhang,Xiufang Ding,Yanping Guo,Hui Gong,Xuguo Sun,Daoping Zhang
Cervical spondylosis (CS), which is resulted from degeneration of cervical intervertebral disc, is a common disease seriously threatening human health and quality of life. However, there is still no effective clinic strategies for the treatment of this disease. The acupoint stimulation with needle-scalpel is a widely used approach to treat orthopedic diseases. In the present study, we evaluated the therapeutic effects of acupoint stimulation around neck with needle-scalpel on delaying the degeneration of cervical intervertebral discs and hopefully provided an approach for the precaution and early intervention of CS. We firstly established a rat model of CS by cervical static-dynamic imbalance to mimics disc degeneration and then stimulated the acupoints around neck with needle-scalpel. The cervical intervertebral disc samples were collected to measure type I and II collagen by quantitative PCR (qPCR), immunohistochemistry, and western blot. The changes in micro-structure and ultra-structure of nucleus pulposus were analyzed under the optical microscope and electron microscope respectively. Acupoint stimulation with needle-scapelon increased type I collagen production and decreased type II collagen production, and improved the micro-structure and ultra-structure of nucleus pulposus. Our results suggest that acupoint stimulation around neck with needle-scapelon could inhibit intervertebral disc degeneration through modulating the extracellular matrix collagen system and improving the changed structure of nucleus pulposus.
研究领域:
骨科
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中医
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生物医学研究
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2021
·
IF 5.816
Xue Zhang,Zhiwei Cheng,Puhui Deng,Linping Zhang,Yu Hou
A designed type-II heterojunction photocatalyst , NiSe 2 /Cd 0.5 Zn 0.5 S (NiSe 2 /CZS), was successfully synthesized and it exhibits outstanding photocatalytic hydrogen evolution performance. The optimal loading amount of NiSe 2 on Cd 0.5 Zn 0.5 S is 13 wt %, and the corresponding hydrogen production rate is approximately 121.01 mmol g −1 h −1 under visible light. The heterojunction structure between Cd 0.5 Zn 0.5 S and NiSe 2 promoted the separation of photogenerated electron-hole pairs, effectively suppressed the photogenerated carrier recombination and endowed the material with excellent interfacial charge transfer properties, thus improving the photocatalytic performance.
研究领域:
材料科学
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化学
·
能源科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2023
·Vol. 47
·期 11
·5546-5554
·
IF 3.3
Wenwen Yang,Shan-Shan Xu,Yawen Niu,Yanhui Zhang,Jian-Feng Li,Juan Xu
As a member of the ternary sulfides, CdIn2S4 is a visible light responded catalyst with a band gap of 2.2–2.6 eV, which is suitable for solar spectrum. In this study, a simple two-step solvothermal method was used to construct Ni12P5/In(OH)3/CdIn2S4 composite catalysts with type-II and Z-scheme heterojunctions, and there was a synergy between the two heterojunctions. The Ni12P5/In(OH)3/CdIn2S4 composite catalyst formed a donor-mediator-acceptor system for photogenerated electrons, which greatly improved the separation efficiency of the photogenerated carriers. Moreover, the highest hydrogen production activity achieved by the Ni12P5/In(OH)3/CdIn2S4 composites was 5.75 mmol g−1 h−1, which was 21 times the original CdIn2S4.
研究领域:
材料科学
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催化
·
光催化
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能源材料
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2023
·Vol. 30
·期 25
·67647-67661
·
IF 5.8
Zhang Xiansheng,Liu Zhifeng,Shao Binbin,Wu Ting,Pan Yuan,Luo Songhao,He Miao,Ge Lin,Sun Jingwen,Cheng Chunyun,Huang Jian
Zirconium-based porphyrin metal organic frameworks (Zr-PMOFs) had attracted attention in the field of photocatalysis in recent years. However, the recombination of photogenerated carriers of monomer PMOF limits its performance of photocatalytic organic pollutants degradation. Metal sulfide has a suitable visible band gap, which can form a heterojunction with MOF materials to enhance the photocatalytic efficiency of MOF. Therefore, a typical metal sulfide semiconductor ZnIn 2 S 4 (ZIS) was introduced into a Zr-MOF (MOF-525) by solvothermal method to prepare a series of ZIS/MOF-525 (ZIS/MOF-525–1, ZIS/MOF-525–2, ZIS/MOF-525–3 and ZIS/MOF-525–4) composite photocatalysts in this work. The results of characterization analysis, optical analysis and electrochemical analysis showed that the interface of ZIS/MOF-525 formed a typical type-II heterojunction, which accelerated the electron transport rate and effectively inhibited the recombination of photogenerated e − and h + in MOF-525. The optimal removal efficiency of tetracycline (TC) by ZIS/MOF-525–3 (the mass of MOF-525 is 30 mg) reached 93.8% under 60 min visible light illumination, which was greater than that of pure MOF-525 (37.2%) and ZnIn 2 S 4 (70.0%), and it still maintained good stability after five cycles reusing experiment. This work provides feasible insight for the preparation of novel and efficient PMOF-based photocatalysts in the future.
研究领域:
材料科学
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环境科学
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化学
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光催化
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2025
·
IF 7.5
Jing Fan,Yanan Yang,Jie Liu,Qi Qi,Fenhong Song
In light of the energy and environmental crises humanity faces, photocatalytic hydrogen production has emerged as one of the effective solutions. Nevertheless, the development of high-performance, low-energy-consumption, and long-lasting stable photocatalysts remains extremely urgent. In this study, a NiS-Mn 2 SnS 4 /g-C 3 N 4 composite with efficient photocatalytic hydrogen evolution performance is synthesized via a simple physical mixing method and calcination process. The introduction of NiS and Mn 2 SnS 4 significantly increases the specific surface area of the g-C 3 N 4 composite, and a dual Type-II heterojunction capable of efficiently separating electron-hole pairs is formed between the components and g-C 3 N 4 . Under 300 W xenon lamp irradiation, the NiS-Mn 2 SnS 4 /g-C 3 N 4 composite achieves a hydrogen evolution rate of 7672.45 μmol·g −1 ·h −1 , corresponding to 3.76, 59.74, and 254.64 times enhancements compared to bare g-C 3 N 4 , NiS, and Mn 2 SnS 4 , respectively. After four cycles, the hydrogen production of NiS-Mn 2 SnS 4 /g-C 3 N 4 still reaches 91 % of the rate in the first cycle. Photoelectrochemical property characterization demonstrates that the composite samples can generate more active sites, reduce the overpotential for H 2 evolution, and enhance light absorption efficiency. Combined with density functional theory (DFT) calculations and band structure analysis, it is confirmed that a strong electronic coupling effect exists among NiS, Mn 2 SnS 4 , and g-C 3 N 4 , and the electron transfer follows a Type-II pathway. This study provides important references and insights for constructing high-activity and high-specific-surface-area g-C 3 N 4 -based photocatalysts.
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DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 10
·2354
·
IF 4.2
Jia-Le Zhou,Hao-Han Chen,Jian Xu,Ming-Yu Huang,Jun-Feng Wang,Hao-Jie Shen,Sheng-Xiang Shen,Cheng-Xian Gao,Chao-Dong Qian
Background:Staphylococcus aureusis a common pathogenic microorganism in humans and animals. Type II NADH oxidoreductase (NDH-2) is the only NADH:quinone oxidoreductase present in this organism and represents a promising target for the development of anti-staphylococcal drugs. Recently, myricetin, a natural flavonoid from vegetables and fruits, was found to be a potential inhibitor of NDH-2 ofS. aureus. The objective of this study was to evaluate the inhibitory properties of myricetin against NDH-2 and its impact on the growth and expression of virulence factors inS. aureus. Results: A screening method was established to identify effective inhibitors of NDH-2, based on heterologously expressedS. aureusNDH-2. Myricetin was found to be an effective inhibitor of NDH-2 with a half maximal inhibitory concentration (IC50) of 2 μM. In silico predictions and enzyme inhibition kinetics further characterized myricetin as a competitive inhibitor of NDH-2 with respect to the substrate menadione (MK). The minimum inhibitory concentrations (MICs) of myricetin againstS. aureusstrains ranged from 64 to 128 μg/mL. Time–kill assays showed that myricetin was a bactericidal agent againstS. aureus. In line with being a competitive inhibitor of the NDH-2 substrate MK, the anti-staphylococcal activity of myricetin was antagonized by MK-4. In addition, myricetin was found to inhibit the gene expression of enterotoxin SeA and reduce the hemolytic activity induced byS. aureusculture on rabbit erythrocytes in a dose-dependent manner. Conclusions: Myricetin was newly discovered to be a competitive inhibitor ofS. aureusNDH-2 in relation to the substrate MK. This discovery offers a fresh perspective on the anti-staphylococcal activity of myricetin.
研究领域:
微生物学
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药理学
·
生物化学
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DOI
PubMed
高影响因子
TALANTA
·
2025
·
IF 6.1
Linzi Huang,Yuhui Qiu,Xiaoqian Sun,Kunxiang Deng,Xinyi Li,Yixi Xie,Pengcheng Zhao,Junjie Fei
Tert-butylhydroquinone (TBHQ) is a common antioxidant in food oils, and reliable detection methods are needed to ensure food safety. Here, a photoelectrochemical (PEC) sensor based on Bi 2 O 3 /MgIn 2 S 4 /GCE was developed for the detection of TBHQ. The sensor performance was significantly enhanced through electrostatic assembly of sheet-like Bi 2 O 3 onto flower-like MgIn 2 S 4 , forming a type-II heterojunction with carefully controlled component ratios, pH, and applied potential. The improved detection capability is attributed to the synergistic effect of the heterojunction structure. Furthermore, the selectivity of the sensor towards TBHQ was elucidated through the study of electrostatic interactions and redox potentials. The detection limit of the developed Bi 2 O 3 /MgIn 2 S 4 /GCE sensor was as low as 9 nM with two linear ranges (0.03–0.18 μM and 0.18–60 μM). Its effectiveness in monitoring food safety has been demonstrated by successful uses in blend oils and soybean oils.
研究领域:
分析化学
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食品安全
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材料科学
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光电化学
·
传感器技术
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产品关联
DOI
PubMed
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Zhihui Pan,Haoyong Guo,Tingjian Huang,Gang Wen,Fangshu Qu,Junguo He,Huarong Yu
In this study, a novel and environmentally friendly technology for sludge incineration ash disposal was developed. We proposed to enhance the performance of thermo-sensitive hydrogel as draw agent for forward osmosis (FO) application by loading sewage sludge ash (SSA). The effect of SSA contents on the swelling and deswelling properties and FO performance of the hydrogels was evaluated. Scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FTIR) and diffusion model were applied to characterize a series of hydrogels with various SSA contents (0–4.5 wt%). The results showed that as the SSA increased, the swelling ratio of hydrogel and the water flux of SSA-hydrogel-based FO increased initially and then declined. This was due to the combined effects of hydrogen bonding and high-density crosslinking within the hydrogels. In addition, the water diffusion mechanism of all hydrogels was super Case II diffusion type. Furthermore, the SSA-loaded hydrogels not only had excellent swelling property but also exhibited good deswelling performance (water recovery ratios of them were almost 90% at 60 °C water bath for 5 min). Moreover, all hydrogels in this study showed promising reusability with almost no flux drop in four consecutive FO permeation-regeneration cycles.
研究领域:
环境科学
·
材料科学
·
水处理技术
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产品关联
DOI
高影响因子
Nanomaterials
·
2023
·Vol. 13
·期 19
·2723
·
IF 5.3
Yanran Wang,Ming-yu Li,Shijie Liu,Yuan Ma,Bo Sun,Liangyu Wang,Haifei Lu,Xiaoyan Wen,Sisi Liu,Xumin Ding
Perovskite quantum dots (QDs), emerging with excellent bright-green photoluminescence (PL) and a large absorption coefficient, are of great potential for the fabrication of light sources in underwater optical wireless communication systems. However, the instability caused by low formation energy and abundant surface traps is still a major concern for perovskite-based light sources in underwater conditions. Herein, we propose ultra-stable zero dimensional–two dimensional (0D–2D) CsPbBr3QD/1,4-bis(4-methylstyryl)benzene (p-MSB) nanoplate (NP) heterostructures synthesized via a facile approach at room temperature in air. CsPbBr3QDs can naturally nucleate on thep-MSB NP toluene solution, and the radiative combination is drastically intensified owing to the electron transfer within the typical type-II heterostructures, leading to a sharply increased PLQY of the heterostructure thin films up to 200% compared with the pristine sample. The passivation of defects within CsPbBr3QDs can be effectively realized with the existence ofp-MSB NPs, and thus the obviously improved PL is steadily witnessed in an ambient atmosphere and thermal environment. Meanwhile, the enhanced humidity stability and a peak EQE of 9.67% suggests a synergetic strategy for concurrently addressing the knotty problems on unsatisfied luminous efficiency and stability of perovskites for high-performance green-emitting optoelectronic devices in underwater applications.Keywords:perovskite quantum dots;p-MSB nanoplate;typical type-II heterostructure;high photoluminescence quantum yield;moisture stability
研究领域:
材料科学
·
光学工程
·
纳米技术
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产品关联
DOI
PubMed
高影响因子
FOLIA MICROBIOLOGICA
·
2015
·Vol. 61
·期 3
·249-253
·
IF 1
Hu Ruixue,Du Na,Chen Nan,Lin Li,Zhai Yanhua,Gu Zemao
The mechanisms of resistance to levofloxacin for Aeromonas hydrophila isolated from diseased fish and selected in vitro were examined in this study. Levofloxacin-resistant mutants were obtained by selection of A. hydrophila in vitro. The quinolone resistance-determining regions (QRDRs) of the gyrA and parC genes were sequenced in Lev R strains and reverse mutation strains. All Lev R strains carried a point mutation at codon 83 (Ser → Ile), and one strain (25 %) harbored a mutation at position 92 (Leu → Met) in the GyrA-QRDR. After being transferred in a levofloxacin-free medium, one strain of the mutants was successfully reversed and the reversion was related with mutations o f GyrA-QRDR at positions 81 (Gly → Asp) and 83 (Ile → Ser). No amino acid alteration was found in the ParC-QRDR. In addition, the minimum inhibitory concentration (MIC) of levofloxacin for the mutants was lower in the presence of reserpine, and all mutants were also resistant to some of the other quinolones. It was found that the mechanism of levofloxacin resistance of A. hydrophila selected in vitro was related to gyrA of type II topoisomerase, and an efflux mechanism was involved in the resistance as well.
研究领域:
微生物学
·
分子生物学
·
药理学
·
水产病害防治
·
抗菌药物耐药性
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Yuge Hou,Xiaofei Jiang,Yuhang Gao,Ying Li,Wensi Huang,Hong Chen,Xiaoyu Tang,Makoto Tsunoda,Jinyu Li,Yingxia Zhang,Xi Xie,Rong Wang,Wenting Hu,Yanting Song,Lushuang Li
Type II pyrethroids has been reported to possess significant toxicity. The analysis of type II pyrethroid residues in biological samples for clinical monitoring and toxicological studies will be favorable. However, due to the interference caused by complex matrix and the trace amount of the pyrethroids, the analysis remains difficult. This study details an efficient method employing magnetic molecularly imprinted polymers as a magnetic solid-phase extraction adsorbent coupled with gas chromatography-mass spectrometry for the detection of type II pyrethroids in human plasma. Molecular simulations were used to screen a suitable monomer and ratio of monomer to template molecule. A series of functional nanoparticles were synthesized and characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction analysis, Fourier transform infrared spectroscopy and vibrating sample magnetometer to verify the coating of functional groups. Then, a binding experiment was employed to evaluate the adsorption properties. According to the results of isotherm study, the adsorption sites and capacity of MMIPs are much better than MNIPs, while the maximum adsorption capacity of magnetic molecular imprinted polymers is 27.115 mg g −1 . The solid phase extraction conditions were investigated, including eluent type, amount of eluent, extraction time and magnetic molecular imprinted polymers amount. The chromatographic separation of type II pyrethroids in human plasma was carried out by Gas Chromatography-Mass Spectrometry; Linearity was assessed using curves prepared with pyrethroids concentrations of 0.2, 1, 2, 5, 10, 25, 50 ng mL −1 ; the coefficients of determination were more than 0.990, and the recoveries are within the range of 90.0 and 100.1%. The limits of detection of four pyrethroid pesticides were between 0.005 and 0.032 ng mL −1 ; The relative standard deviation of magnetic molecular imprinted polymers were 2.74–4.07%. It was confirmed that the current analytical approach can be applied for the selective determination of type II pyrethroids in human plasma samples or other complex matrices.
研究领域:
分析化学
·
毒理学
·
环境科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）