ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY
·
2026
·Vol. 122
·期 3
·e70184
·
IF 2
Wang-Xi Shen,Jia-Min Yu,Xin-Yi Liu,Yu-Xing Zhang,Mao-Ye Li,De-Xin Chen,Su Liu
Glutathione S -transferases (GSTs) constitute a critical enzyme superfamily responsible for xenobiotic detoxification in insects. The green peach aphid, Myzus persicae , is a globally significant agricultural pest that has exhibited declining field susceptibility to λ-cyhalothrin (LCT), a widely applied pyrethroid insecticide. While elevated GST activity has been correlated with LCT tolerance in various aphid populations, the precise molecular mechanisms driving this process have not been fully elucidated. In this study, we functionally characterized a delta-class GST gene (designated MpGSTd1 ) from M. persicae . The encoded protein possesses hallmark structural motifs of the GST family, including distinct glutathione-binding (G-site) and hydrophobic substrate-binding (H-site) pockets. Transcriptional profiling revealed maximal MpGSTd1 expression during the late nymphal to adult stages, and its transcript levels were markedly induced following LCT challenge. Biochemical analysis of the recombinant MpGSTd1 protein confirmed its catalytic competency toward the model substrate CDNB, exhibiting a V max of 0.91 µmol/min/mg and a K m of 2.73 mM. Notably, LCT exposure inhibited the enzyme's activity in vitro with an IC 50 of 0.02 mM, and high-performance liquid chromatography (HPLC) assays demonstrated that MpGSTd1 can directly deplete LCT by 11.4%. Furthermore, RNA interference (RNAi)-mediated suppression of MpGSTd1 in vivo significantly elevated aphid mortality upon subsequent LCT exposure. Collectively, these findings delineate an essential role for MpGSTd1 in modulating LCT susceptibility in M. persicae and underscore its potential utility as a molecular target for future aphid management strategies. Summary A delta-class GST from Myzus persicae was characterized. MpGSTd1 transcription is induced by LCT exposure. Recombinant MpGSTd1 depletes LCT in vitro . Knockdown of MpGSTd1 increases insect susceptibility to LCT.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Shumei Li,Yijie Wang,Yameng Wang,Maobin Wei,Xin Li,Binrong Li,Lili Yang
All-inorganic CsPbBr 3 perovskite quantum dots (QDs) are promising photocatalysts for CO 2 reduction, but their application is limited by aggregation and photoinduced instability. Herein, a 2D/0D BiOBr/CsPbBr 3 S-scheme heterojunction was constructed by anchoring CsPbBr 3 QDs on BiOBr nanosheets. The 2D BiOBr support promotes uniform QD dispersion and exposes more accessible active sites. More importantly, the intimate interface establishes an internal electric field that favors directional interfacial charge transfer in an S-scheme configuration. This pathway facilitates the depletion of photogenerated holes from CsPbBr 3 while retaining strongly reductive electrons for CO 2 conversion, thereby improving charge separation and contributing to enhanced photostability. The optimized composite delivers CO and CH 4 evolution rates of 170.4 and 33.0 μmol g −1 h −1 , respectively, corresponding to 3.8- and 3.2-fold increases over pristine CsPbBr 3 QDs, together with improved cycling stability. XPS, UPS, KPFM, photoelectrochemical measurements, in situ FTIR spectroscopy, and DFT calculations collectively support the S-scheme mechanism and reveal a lower Gibbs free-energy requirement for COOH* formation. These synergistic effects account for the enhanced photocatalytic activity and stability. Download: Download high-res image (150KB) Download: Download full-size image
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LANGMUIR
·
2026
·Vol. 42
·期 30
·22007-22020
·
IF 4.4
Yuan Guokai,Li Qi,Xue Yuyang,Chen Qixiang,Yu Aijia,Xie Aijuan,Luo Shiping
Metal–organic
frameworks (MOFs) have attracted
considerable
research interest as versatile templating agents for synthesizing
transition metal compounds, particularly in electrocatalytic water
splitting applications due to their tunable spatial architectures
and compositional flexibility. This study investigated the in situ
growth of sulfur–phosphorus codoped NiFe-based MOF catalysts
on nickel foam (NF) substrates (FeNi 3 –CPS/NF) and
their bifunctional activities toward hydrogen evolution reaction (HER)
and oxygen evolution reaction (OER) in 1.0 M KOH. Electrochemical
measurements demonstrate that the FeNi 3 –CPS/NF catalyst
exhibits remarkable catalytic performance with low overpotentials
of 136 mV for HER and 75 mV for OER, and low Tafel slopes of 30.97
(HER) and 8.49 mV dec –1 (OER), respectively. The
charge transfer resistance ( R ct ) values
reach 2.328 Ω during HER and 2.149 Ω during OER, highlighting
efficient electron transfer. The electrochemical active surface areas
(ECSA) were determined as 1200 cm 2 for HER and 1425 cm 2 for OER. Stability assessments reveal excellent durability
under both HER and OER conditions, with current retention rates of
86.32% and 80.71% respectively after prolonged electrolysis. These
findings collectively establish FeNi 3 –CPS/NF as
a promising bifunctional electrocatalyst combining high catalytic
activity with exceptional stability for overall water splitting applications.
The innovative integration of heteroatom doping within the MOF architecture
offers new design strategies for advanced energy conversion materials.
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CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Runlong Zhai,Lianchen Zhang,Yaru Cheng,Feng Teng,Peng Hu,Haibo Fan,Jiaming Song,Yang Jiao
The utilization of visible light for photocatalytic degradation has always been a key objective in the field of photocatalysis. In this work, we designed and synthesized an efficient visible-light photocatalyst: V 2 O 5 /ZnIn 2 S 4 (VOZ) nanoflower composite structure. The flower-like ZnIn 2 S 4 , self-assembled from nanosheets, was prepared via a hydrothermal method, followed by the in-situ growth of V 2 O 5 nanoparticles on the nanosheets of ZnIn 2 S 4 through a chemical reaction approach. The results from XPS, PL, ESR and other characterization methods revealed that V 2 O 5 and ZnIn 2 S 4 formed an S-scheme heterojunction, enabling efficient carrier separation and migration while retaining the oxidation capability of V 2 O 5 and the reduction capability of ZnIn 2 S 4 . Under visible light irradiation for 80 min, the composite achieved a 97.4 % degradation for methylene blue (MB), outperforming pure V 2 O 5 and ZnIn 2 S 4 by factors of 1.53 and 1.92, respectively. Similarly, VOZ-20 achieved over 90 % degradation of both methyl orange (MO) and rhodamine B (RhB) within 80 min of visible-light irradiation. Additionally, ICP-OES analysis revealed that the solubility of V 2 O 5 in water was significantly reduced after forming a composite with ZnIn 2 S 4 , which helps prevent vanadium ion contamination in aqueous environments. This composite, with its strong redox activity and simple synthesis, is highly promising for visible-light photocatalytic applications.
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JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Hui Zhuang,Zixing Guan,Bimin Lin,Wenxi Huang,Yuanfu Deng
Heteroatom doping enhances the electrochemical properties of battery electrodes, but conventional multi-step syntheses limit practical applications. Herein, we report a single-step pyrolysis strategy for simultaneous nitrogen–sulfur codoping of anatase TiO 2 microspheres (NS-TiO 2 ) using thiourea as a dual-functional precursor. X-ray photoelectron spectroscopy reveals a synergistic dual-site doping mechanism: sulfur substitutes at Ti sites (2.33 surface at.%) while nitrogen occupies interstitial positions (1.48 surface at.%). This architecture, alongside codoping-induced Ti 3+ defect states (∼3.77%) and oxygen vacancies, inherently enhances electronic conductivity and facilitates Na + transport. Consequently, the charge-transfer resistance decreases dramatically from 156.5 Ω in undoped TiO 2 to 49.48 Ω in the codoped material, which promotes predominant pseudocapacitive charge storage (84% at 2 mV·s −1 ). This optimized configuration delivers exceptional rate capability (55.1 mAh·g −1 at 5 A·g −1 ) and outstanding long-term cyclability (95.9% capacity retention over 2000 cycles at 1 A·g −1 ), significantly outperforming single-element doped analogues. Ultimately, this work establishes clear design principles for multi-element doped metal oxides, uniting synthetic simplicity with superior electrochemical functionality.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Jianle Wang,Xueming Liu,Hong Deng,Dongye Zhao,Qiulin Yang,Zhihua Zhu
Various sulfur- and iron-bearing materials have been shown promising for reductive immobilization of Cr(VI) in water and soil. Yet, composite Ca-Fe-S materials and the effects of water chemistry and material aging have not been investigated. In this work, we prepared a type of Ca-Fe-S microparticles under the atmospheric conditions through a facile one-pot approach, and tested the particles for reductive immobilization of Cr(VI) in solution and soil. Ca-Fe-S showed 40 % higher removal efficiency of Cr(VI) in solution than FeSO 4 and 10 % higher than CaS x on the basis of equal molar dosage. When a Cr-laden soil was amended by Ca-Fe-S, the leachable concentration of Cr per the toxicity characteristic leaching procedure remained below the regulatory limit of 5 mg L −1 after 730 days of curing, while FeSO 4 and CaS x failed to meet the regulatory threshold. Ca-Fe-S served as a slow-releasing source of Fe 2+ and S 2- , which were able to convert Cr(VI) into the stable final product of Cr(OH) 3 . Ca-Fe-S was able to perform well under a wide range of pH (3.0–9.0) and in the presence of high concentrations of coexisting ions (5 mmol L −1 of Cl - , SO 4 2- , or HCO 3 - ). Moreover, the material remained effective when aged under the atmospheric conditions for 14 days. This study showed that Ca-Fe-S is a highly effective material for efficient sequestration of Cr(VI) in soil and groundwater under various water chemistry and materials aging conditions.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Dongdong Xu,Zhigao Xue,Lei Han,Kai Tao
Bimetallic sulfides with superior electrochemical activity are extensively explored as electrode materials for electrochemical energy related applications. However, their utilizations are impeded due to unfavorable faradaic reaction kinetics and poor electrochemical stability. To overcome these defects, this study reports interface engineering of heterogeneous nanosheet arrays on Ni foam (NF) through surface modification of metal-organic framework (MOF)-derived zinc cobalt sulfide (Zn/Co-S) with CeO 2 nanoparticles (NPs). MOF-derived porous Zn/Co-S nanosheets have highly exposed electrochemical active sites and abundant channels for charge transport. The strong interfacial coupling between Zn/Co-S and defective CeO 2 leads to fast charge transfer, thereby improving electrochemical activity. The CeO 2 can also prevent Zn/Co-S from degrading in KOH solution. Moreover, the self-supported electrode shows high electronic conductivity and strong adhesion with the conductive substrate. Therefore, the specific capacity and electrochemical stability of resulting Zn/Co-S@CeO 2 /NF are significantly higher compared with Zn/Co-S/NF. Furthermore, an asymmetric supercapacitor (ASC) based on Zn/Co-S@CeO 2 /NF and activated carbon (AC) exhibits high energy storage capability (42.4 Wh kg −1 ) and outstanding operating durability (91.1 % after 8000 cycles). These results demonstrate that the as-prepared electrode is a superior candidate for electrochemical devices .
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Molecular Catalysis
·
2023
·
IF 4.6
Kexin Huang,Yanxing Hui,Zhongyun Yang,Muhammad Waqas,Fangfang Fan,Limin Wang,Xiaotian Liu,Qiulan Huang,Dujuan Huang,Du-Hong Chen,Youjun Fan,Wei Chen
Electrochemical energy (e.g., fuel cell and metal-air batteries) is featured by large theoretical energy density, high conversion efficiency, safe operation and pollution-free emission. However, the sluggish dynamics of oxygen reduction reaction (ORR) and high cost of noble metals hinder their widespread commercial applications in electrochemical energy devices. Herein, we present a method for the preparation of the N, S co-doped carbon film wrapped Co nanoparticles (Co/NSC) for ORR by aging and then pyrolyzing the mixture of cobalt salt and 1-(p-Toluenesulfonyl)imidazole. The co-doping of N and S facilitates the electron rearrangement of the carbon film, resulting in a rapid electron transfer. The core-shell structure enhances the interaction between N, S co-doped carbon film and Co nanoparticles. These features endow the Co/NSC catalyst an excellent ORR with a half-wave potential of 0.860 V and limiting current density of 6.2 mA cm -2 , besides the superior anti-methanol. The Co/NSC catalyst as the air cathode grants the assembled zinc-air battery high open circuit voltage (1.467 V), large peak power density (156.2 mW cm -2 ), great specific capacity (747.9 mAh g Zn -1 ), and excellent stability. Thus, the prepared Co/NSC catalyst exhibits a promising application in zinc-air battery. This work provides an approach for the synthesis of the carbon-shell coated non-noble metal catalyst and its subsequent applications in oxygen electrocatalysis.
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Solar RRL
·
2023
·Vol. 7
·期 12
·2300188
·
IF 7.9
Yichao Wang,Zipeng Xing,Chunxu Wu,Meijie Liu,Jiapeng Gao,Na Zhang,Zhenzi Li,Haixia Liu,Wei Zhou
The development of heterojunction composite photocatalysts with sophisticated charge transfer mechanisms and interfaces is a promising approach to enhance photocatalytic efficiency. Herein, for the first time, a peanut-like Zn 0.5 Cd 0.5 S/BiVO 4 S-scheme heterostructure visible-light composite photocatalyst via a two-step hydrothermal method is synthesized. S-scheme heterostructures, which can maintain the maximum redox capacity in the conduction and valence bands of the catalyst, have been established as an effective charge transfer mode in the field of photocatalysis. The Zn 0.5 Cd 0.5 S/BiVO 4 heterojunction photocatalyst exhibits 99.52% degradation efficiency for tetracycline-based organic pollutants under visible light irradiation. In addition, the photocatalytic hydrogen production efficiency of the composite catalyst is as high as 8969.58 μmol g −1 h −1 , which is 69.24 and 4.35 times higher than that of single BiVO 4 and Zn 0.5 Cd 0.5 S, respectively. Through density functional theory calculations and experimental studies, the material conformed to the charge transfer mode of the S-scheme heterojunction is determined. The improved photocatalytic efficiency can be attributed to the formation of S-scheme heterogeneous interface, which bends the energy band at the interfacial contact, and the formation of an internal electric field, which hinders rapid charge recombination and prolongs the lifetime of charge carriers.
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ARCHIVES OF MICROBIOLOGY
·
2023
·Vol. 205
·期 5
·1-10
·
IF 2.8
Guo Hui,Yang Wei,Lei Bingshuang,Zhao Fengju,Guo Lili,Qian Junqing
Food safety is a major public health concern all over the world. Therefore, the prevention of food contamination is becoming extremely crucial. In this study, an antimicrobial nanoemulsion composed of water-soluble nisin and fat-soluble octanoic acid was successfully prepared. The results showed that the average particle size and the polymer dispersity index of the nisin−octanoic acid (NOA) nanoemulsion were around 52.21 nm and 0.253, respectively. The NOA nanoemulsion required less amounts of nisin and octanoic acid to achieve the effective antimicrobial effect against Escherichia coli and Staphylococcus aureus . In addition, the growth curves of E. coli and S. aureus were determined. The OD 600 of NOA nanoemulsion was significantly lower than free nisin after being incubated for 24 h ( p < 0.001), indicating that the antimicrobial effect of NOA nanoemulsion was outstanding. Meanwhile, the synergistic antimicrobial property of NOA nanoemulsion against E. coli and S. aureus was significantly better than free nisin under nonacid conditions ( p < 0.05). Overall, the results of this study may provide guidance for the further application of nisin in more forms.
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Batteries & Supercaps
·
2023
·Vol. 6
·期 7
·e202300145
·
IF 5.7
Mengmeng Liu,Yan Zhang,Zhao Xu,Xuguang Han,Wenshan Gou,Yifei Sun,Chang Ming Li
Graphical Microporous biomass carbon : The Enteromorpha-derived nitrogen-doped highly microporous carbon (HMCs) was prepared by carbonization and activation. Due to the high specific surface area, rich pore structure and nitrogen doping of HMCs, HMCs-3@S/SeS 2 cathode exhibits excellent cycling stability and rate performance in aqueous Zn-chalcogen batteries. Rechargeable aqueous zinc-chalcogen batteries have become a rising star in the energy storage systems due to the high abundance, low cost and high theoretical specific capacity of the chalcogen cathodes (S, Se). However, there are still some challenges in its practical application, such as low utilization of active substances due to the poor conductivity of chalcogen and sizable volume changes during charging/discharging. In this work, for the first time, nitrogen-doped highly microporous biomass-derived carbon (HMCs-3) was synthesized as a sulfur-loaded cathode for aqueous zinc-chalcogen batteries. A high specific surface area (3349.4 m 2 g −1 ) and a wealthy micropore of HMCs-3 provide enough space to load the active substances and allow electrolytes to access reaction sites while well alleviating the volume changes of sulfur during the cycling process. As a cathode for aqueous zinc-chalcogen batteries, HMCs-3@S delivers a high reversible discharge capacity (591 mAh g −1 at 0.1 A g −1 ), an excellent rate capability (477 mAh g −1 at 3 A g −1 ) and good cycling stability (559 mAh g −1 after 100 cycles at 1 A g −1 ). The excellent performance of this biomass-derived carbon holds great promise for practical applications in aqueous zinc-chalcogen batteries.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Yu Peng,Bei Cheng,Liuyang Zhang,Jingjing Liu,Jiaguo Yu
As we all know, formaldehyde (HCHO) is extremely harmful to human health and has been identified as a primary carcinogen by the World Health Organization. Therefore, there is an urgent need to design efficient formaldehyde-sensing materials. In this work, a highly responsive formaldehyde sensor of In 2 O 3 @ZnO derived from MIL-68(In)@ZIF-8 precursor was successfully prepared. By adjusting the ratio of In 2 O 3 and ZnO, it can be found that the performance of the resulting sensor has greatly improved under 100 ppm HCHO at an operating temperature of 220 °C and the detection limit can be as low as 4 ppb. Additionally, it also has excellent selectivity (Q≥10), anti-interference (the deviation value≤3.5%), and long-lasting stability (the variation value≤4%). Such distinguished sensing performance can be attributed to the metal-organic framework (MOF) derived step-scheme (S-scheme) heterojunction , which ultimately increases the adsorption of oxygen and HCHO. This work verifies that ingenious heterojunction construction can significantly improve gas sensing performance.
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危险品化学品经营许可证（带存储）