Inorganics
·
2025
·Vol. 13
·期 7
·211
·
IF 3
Wen Li,Di Yin,Wanxin Liu,Yi Li,Yijin Wu
The electrochemical oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) coupled with water electrolysis for green hydrogen production is a promising strategy to address energy crises and environmental pollution. Despite the suitable adsorption energy for HMF due to their partially filled d-band electronic structures, Ni- or Co-based oxides/hydroxides still face challenges in insufficient activity and stability. In this study, a porous heterogeneous nickel cobalt oxide/hydroxide growth on nickel foam (NF), which is defined as NF@NiCo-H/O, was developed via immersion in concentrated alkali solution. Compared with the single-component NiCo oxides, the NF@NiCo-H/O catalyst exhibits a lower application potential of only 1.317 V, 1.395 V, and 1.443 V to achieve current densities of 20, 50, and 100 mA cm−2, respectively, in an alkaline solution containing HMF. Additionally, it demonstrates rapid reaction kinetics with a Tafel slope of 27.6 mV dec−1and excellent cycling stability. Importantly, the presence of more high-valent Ni3+-O species on the catalyst surface contributes to its exceptional selectivity for 2,5-furandicarboxylic acid (86.7%), Faradaic efficiency (93.1%), and conversion rate (94.4%). This catalyst provides some theoretical guidance for the development of biomass electrooxidation catalysts for sustainable energy and chemical production.
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ACS Applied Electronic Materials
·
2025
·
IF 4.7
Qingkun Kong,Xiaochen Wang,Wuyang Fan,Yangqing Wu,Xin Xu,Junsheng Chen
Metal halide perovskites (MHPs) with stimuli-responsive photoluminescence (PL) have attracted widespread attention for their application in optical encryption. However, existing metal halide perovskites typically exhibit a monochromatic PL emission and response to a single stimulus. As a result, they show limited encryption security. Therefore, it is crucial to develop a strategy to transition from single-stimulus responsive materials to multistimuli responsive ones. Herein, for the first time, we reported a strategy through cation alloying to form CsxRb2–xMnBr4(H2O)2 with multistimuli responsive PL. A continuous PL color change of CsxRb2–xMnBr4(H2O)2 was achieved from nonluminous, red and green light emissions with temperature, which is attributed to the chemical transformation from CsxRb2–xMnBr4(H2O)2 to Rb2MnBr4, RbMnBr3, Rb3MnBr5, and Cs3MnBr5. More importantly, Cs+ alloying can enable the chemical transformation from CsxRb2–xMnBr4(H2O)2 to RbMnBr3, Cs3MnBr5, and Rb3MnBr5 in isopropanol accompanied by PL change from red to green. Furthermore, such a chemical transformation of CsxRb2–xMnBr4(H2O)2 can also be triggered by water. These results highlight Cs alloying as a unique strategy to expand the multistimuli responsive PL modes of MHPs. Our findings present a straightforward approach for designing multistimuli responsive materials with potential applications in information storage, anticounterfeit labeling, and information security.
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Microbiology Spectrum
·
2025
·
IF 3.8
Fan Yang,Wei Dai,Hua Xue,Wen Chen,Chen Liu,Yaru Tian,Wanli Cheng,Jibin Zhang
Root-knot nematodes (RKNs) are notoriously challenging to control because of their broad host spectrum and swift proliferation. Consequently, there is an urgent need to develop safe and effective nematicides. Microorganisms and their metabolites have the potential to control RKNs safely and effectively. Paenibacillus polymyxa KM2501-1 can produce a range of volatile organic compounds (VOCs) with nematicidal activities, among which 2-undecanol is a potential biocontrol agent against Meloidogyne incognita. Nonetheless, the mechanism by which 2-undecanol prevents RKN infection in plant roots remains unclear. 2-Undecanol has many activities against M. incognita in vitro, including contact (LC50 = 34.5 mg/L), fumigation (LC50 = 191.6 mg/L), attraction, locomotion inhibition (frequency of head thrash and body bend reduced by 84.0% and 97.0% at concentration of 40 mg/L) and egg hatching inhibition (by 98.5% at concentration of 80 mg/L). Upon treatment with 2-undecanol, a noticeable reduction in the number of galls was observed, and the control efficacy reached 60.8% at the dose of 5 mg/pot. Metabolomics analysis revealed that the application of 2-undecanol significantly influenced the composition of root exudates of tomato. Among the 17 differential metabolites, the up-regulated 10-undecenal could attract and kill M. incognita J2 larvae at a concentration of 100 mg/L, and cyclohexylamine had nematicidal activity at the concentration of 1,000 mg/L. This study revealed the mechanism of 2-undecanol inducing plant roots to secrete nematicidal substances with attractant activity, effectively controlling RKNs, which could pave the way for the development of environmentally friendly and cost-effective nematicides.
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PubMed
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BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
·
2025
·
IF 2.2
Yuping Liu,Zhipeng Li,Ke Shen,Hua Huang,Xinshuai Zhang
Pantothenic acid (also known as pantothenate or vitamin B5), the obligate precursor of coenzyme A, is universally required in all branches of life. Although its biosynthetic pathways are well characterized, its catabolism remains poorly understood, constraining our insights into its broader biological roles and disease associations. By synergistic analysis of sequence similarity network (SSN) and genome neighborhood network (GNN) of pantothenate permease (UniProt ID: P16256 ) homologues, we identify a compact catabolic gene cluster for pantothenic acid in Geobacillus thermodenitrificans NG80-2. In vitro enzymatic activity assays indicate that pantothenic acid is first hydrolyzed to β-alanine and ( R )-pantoate by pantothenase belonging to the peptidase_M20-M20_dimer family (PF01546-PF07687), structurally distinct from the canonical pantothenase in amidase family (PF01425), and then ( R )-pantoate is sequentially oxidized into aldopantoate, ( R )-3,3-dimethylmalate, and α-ketoisovalerate by three dedicated dehydrogenases. The gene cluster is widespread within Bacillota phylum inhabiting high-temperature, hypersaline or alkaline niches, contrasting with previously described pathway restricted to Pseudomonadota, whose catabolic genes are scattered across the genomes. This work expands our knowledge about the pantothenic acid catabolism and reinforces the value of the transporter-focused genome mining strategy applicable for pathway discovery.
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MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 7
·1-12
·
IF 5.3
Wu Han,Li Hai,Shu Jiayi,Yang Changyan,Wang Jianglong,Li Haitao,Shao Min,Zhou Hefeng
In December 2019, Wuhan, China, reported the first cases of pneumonia caused by a previously unknown coronavirus, subsequently designated SARS-CoV-2. This pathogen precipitated a global pandemic of coronavirus disease 2019 (COVID-19). The virus primarily transmits via aerosols, direct contact, and contaminated surfaces. Its high infectivity and rapid transmission have posed severe public health challenges on a global scale, emphasizing the essential need for precise and swift diagnostic techniques to effectively track and curb its transmission. To address this need, we designed a highly efficient approach, namely a colloidal gold immunochromatographic strip (CGICS) based on an IgG-mediated immunoassay, for the specific capture of the SARS-CoV-2 nucleocapsid (N) antigen. Evaluation of the assay’s specificity with a panel of common respiratory viral pathogens revealed that the CGICS specifically recognized SARS-CoV-2, with no cross-reactivity observed against non-target viruses. In addition, limit-of-detection (LOD) assessments indicated that the minimum detectable concentration was 2 ng/mL, and agreement analysis experiments showed a concordance rate of 98%, demonstrating high specificity and sensitivity. The resulting CGICS was capable of detecting SARS-CoV-2 antigen within 5–15 min. This study provides a rapid diagnostic approach for early SARS-CoV-2 infection, offering significant implications for effective disease prevention, control, and clinical diagnosis. Graphical
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Zhang Tianyu,Wang Weibo,Liu Wenxian,Guo Zhengxiao,Liu Junfeng
Reconstruction of metal-organic frameworks often occurs under reaction conditions, thereby impeding true active species identification and hindering mechanism understanding. Herein, we present the mechanistic insight underlying the electrochemical synthesis of deprotonated anion of H 2 O 2 (HO 2 − ) via 2e − oxygen reduction by ultrathin Ni-benzenedicarboxylic acid (NiBDC), guided by its thickness-dependent performance and pH-induced reconstruction behavior. The real active species are identified as alkaline-reconstructed β-Ni(OH) 2 that is chemically coupled with 1,4-benzenedicarboxylic acid residual ligand. The hybrid catalyst is characterized to exhibit an optimized surface electronic structure, which improves the intrinsic activity and selectivity. Operando characterization and theoretical simulations further reveal that the residual ligand functionalization significantly boosts the formation and facilitates the adequate binding of *OOH intermediates. Thus, the ligand-functionalized Ni(OH) 2 exhibits high HO 2 − selectivity (>90%) in 0.1 M KOH across a broad current density up to 200 mA cm −2 . Moreover, high HO 2 − production rate of 13.7 mol g cat −1 h −1 with significant accumulation of 2.0 wt.% HO 2 − under alkaline conditions is achieved at 200 mA cm −2 over 100 h, suggesting the promising potential for large-scale electrosynthesis of HO 2 − in industrial applications.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Liming Xiao,Fangyuan Yu,Ping Sun,Xiaodong Wang,Linmao Wen,Yunzi Ren,Feng Cao,Jun Mao,Qian Zhang
With the rapid development of the Internet of Things (IoT), there has been a significant surge in demand for flexible power supply. However, most existing solutions still face challenges in delivering both a continuous, stable energy supply and excellent mechanical adaptability.Herein, we report a Ag2Se network fabricated via a single-step electrodeposition process, which enables continuous regulation of porosity in the range of 75%-99%. This method leads to the formation of a highly interconnected porous architecture. The optimized network with 92% porosity demonstrates a synergistic enhancement of thermoelectric and mechanical properties, achieving a zT value of 0.38 and excellent strain stability, with only a 6.4% increase in resistance after 1000 compressive cycles. The single-leg device based on this material delivers a high power density of 181.5 μW cm -2 under a temperature difference of 40 K. In comparison, a denser network with 86% porosity, while mechanically rigid, achieves a room-temperature zT of 1.0, outperforming most bulk Ag2Se thermoelectric materials. This work provides an effective strategy to coordinate thermoelectric performance and mechanical flexibility through structural porosity modulation, paving the way for advanced wearable self-powered technologies.
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Energy & Environmental Materials
·
2026
·
IF 14.1
Yanmei Deng,Yu Mao,Mengyang Wang,Yuanyuan Huang,Wenjian Chan,Ziyang Ren,Ening Gu,Sambasivam Sangaraju,Xianzhong Lin,Guowei Yang
Cu 2 ZnSn(S,Se) 4 (CZTSSe) thin-film solar cells have garnered significant interest owing to their appealing properties, such as earth-abundant composition, environmental friendliness, high light absorption coefficient and optimal bandgap. However, current high-efficiency CZTSSe devices (>13%) are predominantly fabricated by spin-coating, which is limited in scalability for mass production. To overcome this issue, we developed a scalable doctor-blading method compatible with roll-to-roll processing. For the first time, a molecular precursor ink based on 2-methoxyethanol solvent was adapted in doctor-blading for CZTSSe thin film preparation. The preheating temperature was systematically optimized to obtain high-quality precursor layers. It was found that the preheating temperature significantly influences the solvent evaporation kinetics, leading to the formation of cracks of varying sizes on the precursor film surface. At the optimal preheating temperature of 340 °C, moderately sized cracks were generated, which effectively facilitated the penetration of Se vapor during selenization and promoted grain growth in the absorber layer. This optimization notably enhanced the crystallinity and reduced the defect density of the CZTSSe absorbers. Furthermore, Kelvin probe force microscopy measurements revealed that the films preheated at 340 °C exhibited pronounced downward band bending at grain boundaries and the narrowest contact potential distribution, which effectively promoted charge carrier separation and suppressed nonradiative recombination. Consequently, a record power conversion efficiency of 13.26% was achieved for doctor-bladed CZTSSe solar cells. This work demonstrates a viable and scalable strategy for producing low-cost and highly efficient CZTSSe thin-film photovoltaics.
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Materials
·
2018
·Vol. 11
·期 2
·297
·
IF 2.467
Jiaxi Wang,Li Luo,Baoyu Huang,Jingqi He,Wei Zhang,Weiren Zhao,Jianqing Wang
Novel LiLa1−x−y(MoO4)2:xSm3+,yEu3+(in short: LL1−x−yM:xSm3+,yEu3+) double molybdate red phosphors were synthesized by a solid-state reaction at as low temperature as 610 °C. The optimal doping concentration of Sm3+in LiLa1−x(MoO4)2:xSm3+(LL1−xM:xSm3+) phosphor isx =0.05 and higher concentrations lead to emission quenching by the electric dipole—electric dipole mechanism. In the samples co-doped with Eu3+ions, the absorption spectrum in the near ultraviolet and blue regions became broader and stronger than these of the Sm3+single-doped samples. The efficient energy transfer from Sm3+to Eu3+was found and the energy transfer efficiency was calculated. Under the excitation at 403 nm, the chromaticity coordinates of LL0.95−yM:0.05Sm3+,yEu3+approach to the NTSC standard values (0.670, 0.330) continuously with increasing Eu3+doping concentration. The phosphor exhibits high luminous efficiency under near UV or blue light excitation and remarkable thermal stability. At 150 °C, the integrated emission intensity of the Eu3+remained 85% of the initial intensity at room temperature and the activation energy is calculated to be 0.254 eV. The addition of the LL0.83M:0.05Sm3+,0.12Eu3+red phosphors can improve the color purity and reduce the correlated color temperature of WLED lamps. Hence, LL1−x−yM:xSm3+,yEu3+is a promising WLED red phosphor.
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高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2018
·
IF 2.179
Jiehua Wang,Lijia Zhou,Yanhui Wang,Jungu Xu,Xiaoyan Yang,Xiaojun Kuang
Interstitial oxide ion conducting Pb 0.7 La 0.3 WO 4.15 scheelite material was synthesized by a traditional high-temperature solid state reaction method and its structure was analyzed by Rietveld method on neutron powder diffraction (NPD) data, which indicates the positional disorder owing to the existence of extra oxygen from donor doping of La 3+ for Pb 2+ . Atomistic static-lattice simulation indicates that interstitial oxygen defects are accommodated via entering into the bonding environment of WO 4 , resulting in local corner-shared W 2 O 9 polyhedral units. The molecular dynamic simulations show that the interstitial oxide ion can move among the WO 4 tetrahedral units through a synergic mechanism involving continuous breaking and reformation of W 2 O 9 units assisted by rotation and deformation of WO n polyhedra and knock-on process between oxygen atoms.
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ACS Applied Nano Materials
·
2020
·
IF 0
Qiaoling Liu,Xiuyun Niu,Kaixin Xie,Yanmei Yan,Borong Ren,Ruirong Liu,Yuxia Li,Lin Li
Nitrogen(N) and sulfur(S) codoped carbon dots (N/S-CDs) are facilely developed by a one-pot hydrothermal process from thiourea and o-phenylenediamine as carbon precursors. The as-fabricated N/S-CDs reveal a high quantum yield of 26% and a large Stokes shift up to 106 nm under the excitation of 450 nm with good water dispersibility as well as antiphotobleaching. With addition of Fe3+, fluorescence quenching happens with a good linearity within 0.3–70 μM and a low detection limit of 0.19 μM. However, the quenched fluorescence could be rapidly recovered with the addition of monohydrogen phosphate ([HPO4]2–) due to formation of the stable complex [Fe(HPO4)]+ by a competitive reaction between the N/S-CDs-Fe3+ complex and [HPO4]2–, a good linearity is in the range of 0.3–60 μM with a low detection limit of 0.27 μM. Thus, a significant “on–off–on” fluorescence response is performed with obvious color change from yellow-dark brown-yellow. In addition, the practical application and the confocal microscopic images all suggest that the N/S-CDs could target both Fe3+ and [HPO4]2– in living cells, implying that the N/S-CDs possess the diverse applications for Fe3+ and [HPO4]2– recognitions in biomedical fields.
研究领域:
纳米技术
·
分析化学
·
生物医学成像
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环境传感
·
材料科学
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2016
·Vol. 28
·期 2
·1620-1623
·
IF 1.798
Zhang Shuai,Li Lingxia,Lv Xiaosong
The Mg 3 (PO 4 ) 2 ceramics were prepared by using the conventional solid-state reaction method. And the samples sintered at 1025 °C showed high relative density with 96.51 %. The crystal structure and dielectric properties of Mg 3 (PO 4 ) 2 ceramics were investigated. Optimized dielectric properties tested at 1 MHz were obtained in Mg 3 (PO 4 ) 2 ceramic sintered at 1025 °C for 2 h (ε r ~ 5.9, tanδ ~ 0.0015 and τ ε ~ 40 ppm/°C). Meanwhile, Mg 3 (PO 4 ) 2 ceramic showed the chemical compatibility with Ag electrodes, which can be a promising candidate for multilayer components applications in high frequency.
研究领域:
材料科学
·
陶瓷
·
介电材料
·
电子材料
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