Science China-Technological Sciences
·
2023
·Vol. 66
·期 9
·2681-2695
·
IF 4.6
Du JingJing,Nie ZhaoJun,Yu Hui,Xu JianXiong,Xu LiJian,Chen Qiang
Up to now, it is always a delicate and challenging task to clean and protect Xuan paper ink painting. Xuan paper is composed of cellulose with a rough surface and easy to absorb dust, which leads to poor cleaning effect and irreversible damage in traditional cleaning process. Hydrogel is one of the most effective tools to clean the artworks. However, in the practice of cleaning Xuan paper, most hydrogels cannot achieve fine cleaning result due to the interfacial adhesion issues. Herein, to protectively and effectively clean Xuan paper, using physical yet strong poly(vinyl alcohol)/poly( N -(2-hydroxyethyl) acrylamide) (PVA/PHEAA) hydrogel with suitable stiffness as the model, the interfacial adhesion between hydrogel and Xuan paper was systematically investigated, and various technologies were used to evaluate the cleaning effect. A critical interfacial adhesive energy (< 4 J/m 2 ) is found to achieve the protective and effective cleaning purpose. To the best of our knowledge, this is the first report to estimate the adhesion of hydrogel on the cleaning of paper artwork, which will provide a new viewport in the conservation practice.
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IONICS
·
2018
·Vol. 25
·期 3
·1303-1313
·
IF 2.347
Fan Jiaxin,Xiao Qiangqiang,Fang Yaobing,Li Li,Yuan Wenhui
This work presents a Zn/graphite dual-ion battery using natural graphite as the cathode and metallic zinc as the anode, with ionic liquid-based electrolyte. Upon charge, the Zn 2+ cations deposit on the zinc anode, and the trifluoromethanesulfonate (TfO − ) anions simultaneously intercalate into the graphite cathode; upon discharge, both the ions are released back into the electrolyte. The 0.2 M Zn(TfO) 2 /EMImTfO ionic liquid-based electrolyte exhibits a high electrochemical window of 2.8 V (vs. Zn 2+ /Zn) as well as a high conductivity of 7.3 ms cm −1 . The deposition/stripping of zinc on a copper working electrode is systematically studied, which reveals that Zn 2+ cations are mobile in the ionic liquid electrolyte, and zinc can be deposited and stripped in this electrolyte. The insertion/extraction of TfO − into/from graphite is also investigated, demonstrating a reversible process. At a current of 0.2 mA cm −2 and within the voltage of 0.8–2.8 V, the Zn/graphite dual-ion cells exhibit a high sloping discharge plateau within 1.8–2.4 V (corresponding to a medium voltage of about 2.0 V), a discharge capacity of 33.7 mAh g −1 , and an energy density of 65.1 Wh kg −1 ; cells deliver a cyclability of 93.5% Coulombic efficiency for 100 cycles. The SEM image reveals that the zinc deposits are compact and dense, and uniformly distribute on anodes with an average grain size of about 200 nm, without the formation of dendrites. The use of high-safety electrolyte and low-cost electrode materials may enable this cell configuration to be a promising candidate for future energy storage systems.
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Advanced Materials Interfaces
·
2017
·Vol. 4
·期 22
·1700777
·
IF 4.279
Wentao Gan,Likun Gao,Shaoliang Xiao,Runan Gao,Wenbo Zhang,Jian Li,Xianxu Zhan
An effective induction heating material composed of wood and magnetic Fe 3 O 4 particles is prepared via a simple hydrothermal method. Fe 3 O 4 particles deposit on the porous wood substrate provides excellent magnetic properties and high magnetothermal conversion resulting in rapid increase in the temperature at the wood substrate. Benefiting from the effective magnetocaloric effect of magnetic particles, the temperature of magnetic wood exhibits a noticeable rise (from 25.9 to 70.1 °C in 10 min) at low-frequency magnetic field. For simulating the real environment, the indoor temperature rise of magnetic wooden model also reveals the excellent heating performance of magnetic wood. Besides, the magnetic wood also serves as a thermal insulator to slow down the transport of thermal energy from the high temperature area to its surroundings due to its low thermal conductivity, which benefit the rational use of thermal energy in daily life. In view of highly scalable, simple operation, good durability, excellent magnetic properties, effective magnetocaloric effect, and thermal insulation, the novel magnetic wood composite demonstrated here is an attractive induction heating material for application in building, decoration, and massage furniture.
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Journal of Materials Chemistry C
·
2024
·Vol. 13
·期 3
·1332-1337
·
IF 5.7
Tingting Cao,Feifei Guo,Fuai Hu,Xutang Tao,Zeliang Gao
Semiconductor-based X-ray detectors have become critical in medical diagnosis, industrial inspections, and scientific research. The recently reported metal oxide single-crystal materials have demonstrated low detection limits and outstanding stability. Herein, Lu2TeO6 is rationally designed and successfully grown as a novel X-ray detection material using the top-seeded solution growth (TSSG) technique. Due to the high valence and heavy ions Lu3+ and Te6+, Lu2TeO6 exhibits a high X-ray attenuation coefficient and negligible current drift. The (100) and (001) wafers of the Lu2TeO6 single crystal exhibited ultrahigh resistivities of 9 × 1014 Ω cm and 1.09 × 1015 Ω cm and high μτ values of 5.69 × 10−4 cm2 V−1 and 5.62 × 10−4 cm2 V−1, respectively. The detectors demonstrated low, stable dark current drifts of 3.42 × 10−8 nA cm−1 s−1 V−1 and 2.42 × 10−8 nA cm−1 s−1 V−1 for X-ray detection, achieving high sensitivities of 291.93 μC Gy−1 cm−2 and 248.65 μC Gy−1 cm−2 and ultralow detection limits of 23.5 nGy s−1 and 15.8 nGy s−1. These results reveal the potential application of Lu2TeO6 single crystals in X-ray detection and propose a promising perspective to design X-ray detection materials with high performance.
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ChemElectroChem
·
2019
·Vol. 6
·期 9
·2531-2535
·
IF 3.975
Mingyang Liu,Mengyang Xia,Ruijie Qi,Qun Ma,Man Zhao,Zailei Zhang,Xianmao Lu
Self-discharge severely constrains the application of supercapacitors for long-term energy storage because it causes decay of cell voltage and loss of energy. So far, three pathways have been proposed for the self-discharge of supercapacitors: i) ohmic leakage, ii) diffusion-controlled self-discharge, iii) faradaic reactions. However, solutions for mitigating the self-discharge of supercapacitors are limited. Here, we choose lyotropic liquid crystal (LLC) as an electrolyte additive to suppress the self-discharge of supercapacitors through the electrorheological effect of the LLC. The LLC formed by the assembly of a triblock copolymer Pluronic L64 in ion liquid [Bmim]BF 4 exhibits dielectric anisotropy and can reorient in an electric field, causing increased viscosity and slower ion diffusion of the electrolyte. It is found that, by adding 5 % (vol%) LLC into TEMABF 4 /acetonitrile electrolyte, the self-discharge rate at room temperature can be decreased by 32 % compared to supercapacitors without LLC. Furthermore, the LLC could reduce the self-discharge rate of supercapacitors even at 50 °C due to its stability in a relatively wide temperature range. Graphical Lyotropic liquid crystals (LLCs) formed through the assembly of a triblock copolymer Pluronic L64 in ion liquid [Bmim]BF 4 are employed as an electrolyte additive for supercapacitors. The addition of LLCs leads to suppressed self-discharge rate in an extended temperature range from 25 to 50 °C.
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npj Biofilms and Microbiomes
·
2026
·
IF 11.4
Xia Xiong,Zheng Liangzhen,Zhou Jinjie,Ni Haoran,Zhu Guoliang,Liu Hongbin,Chen Ruiyue,Shi Haimei,Sun Huizeng,Li Meng,Wang Sheng,Dai Lei
Ruminant methane emission has attracted increasing attention due to its significance in global climate change and sustainable livestock production. Methyl-coenzyme M reductase (MCR), the key enzyme involved in the terminal step of methanogenesis in the rumen microbiome, is responsible for nearly all biologically generated methane released into the atmosphere. In this study, we developed an AI-assisted workflow for discovery of novel MCR inhibitors. Ultra-fast virtual screening of ~23 million molecules yielded 26 candidate molecules for experimental validation, among them 4 molecules showed significant inhibition of methane production. Subsequent structure-guided optimization led to the discovery of a nanomolar-range inhibitor P yra z ol-5(4H)- o ne,3-(4- n itrophenyl) (PZON) with an IC 50 of 0.24 μM. PZON inhibited Methanobrevibacter ruminantium M1 growth and methanogenesis in pure cultures, and suppressed methane emissions by 73–98% across rumen microbiomes from four ruminant sources, while exhibiting no detectable cytotoxicity at concentrations exceeding 400-fold its IC 50 . Metatranscriptomic analyses further demonstrated that PZON reduced transcriptional activity of diverse methanogenic lineages and MCR, providing transcriptional evidence of the anti-methanogenic activity of PZON. Overall, our study provides promising candidates for methane-reducing feed additives, and demonstrates the power of AI-assisted discovery of small molecules for targeted modulation of gastrointestinal microbiomes.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Meiling Long,Yue Liu,Jun Yang,Shaogui Wu
Biomass-derived B-CDs were synthesized from Mahonia fortunei fruits. • The B-CDs showed bright blue emission with a quantum yield of 31.1%. • Pb 2+ selectively quenched B-CD fluorescence with a low LOD of 26 nM. • L-Histidine restored fluorescence via competitive Pb 2+ coordination. • An IMPLICATION logic gate was constructed from the on–off–on response. Nitrogen-doped carbon dots (B-CDs) with deep-blue fluorescence were synthesized through a one-step hydrothermal route using the fruits of the medicinal plant Mahonia fortunei as the biomass carbon source and 1-naphthylamine as the nitrogen dopant. The resulting B-CDs showed excitation-independent emission, a high fluorescence quantum yield of 31.1%, and excellent resistance to salt, photobleaching, and long-term storage. Pb 2+ efficiently quenched B-CD fluorescence by forming non-emissive ground-state complexes through bidentate coordination with oxygen- and nitrogen-containing surface groups, switching the probe to the “off” state. By contrast, L-histidine (L-His), whose imidazole group has stronger competitive affinity for Pb 2+ , dissociated the carbon dot‑lead complexes and markedly restored fluorescence, returning the system to the “on” state. The platform afforded a detection limit of 26 nM for Pb 2+ , while the L-His-induced fluorescence recovery response was linear over 40–80 μM, with an average fluorescence recovery efficiency of 88.2%. On the basis of this reversible fluorescence response, an IMPLICATION molecular logic gate was constructed using Pb 2+ and L-His as chemical inputs and fluorescence intensity as the output, enabling logic discrimination in a two-component system. UV–vis absorption spectroscopy, time-resolved fluorescence lifetime analysis, and FT-IR spectroscopy jointly supported the reversible “on-off-on” response mechanism. This work provides a practical strategy for developing natural plant-derived carbon-dot platforms for reversible fluorescence sensing and molecular logic devices. Download: Download high-res image (155KB) Download: Download full-size image
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JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Ziping Pan,Ziwei Zou,Yue Guo,Bingjian Guo,Sanshan Luo,Linlin Feng,Lijun Deng,Xiaolong Ma,Zhenwu Liang,Shihan Pan,Hongyan Wei,Minling Wei,Yan Huang,Xiongmei Huang,Jinbin Wei,Yonghong Liang,Zhiheng Su
Dietary supplements, with nutritional and health benefits, are widely used worldwide. Ensuring the quality of dietary supplements has become particularly important as demand increases. Current traditional methods of quality assessment tend to concentrate solely on the content of certain active ingredients; nevertheless, the bioactivity of a product, which serves as a more direct indicator of its quality, is frequently overlooked. Thus, a comprehensive "Content-Extractives-Activity" quality evaluation system was developed for dietary supplements using a portable near-infrared spectrometer combined with entropy weight method in this study. Taking Eucommia ulmoides granules as the object of study, near-infrared spectroscopy (NIRS) was used to predict the pinoresinol diglucoside content, ethanol-soluble extractives content, bioactivity indicators related to antioxidant damage such as cell viability value and intracellular malondialdehyde content, as well as comprehensive index. The best models all obtained satisfactory prediction results with correlation coefficient of prediction in the range of 0.89~0.97 and residual predictive deviation in the range of 1.81~4.19, which demonstrated the feasibility of the method for the rapid evaluation of the integrated quality of dietary supplements by NIRS.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Jingbo Xie,Ping Zhang,Zeyu Jiang,Qiying Zhang,Jiaxin Lv,Zhaoye Wu,Meng Yin,Yancheng Wu,Liyong Tian,Ningbo Yi,Yangfan Zhang
Fiber supercapacitors (FSCs) show high potential to integrate into wearable electronic textiles but still suffer from inadequate deformation durability due to physical assembly configuration. Chemical bonding of all-in-one configurations promises new perspectives for mechanically durable FSCs, however, which have been rarely reported so far. In this work, a universal prototype of all-in-one FSCs is proposed based on monolithic crosslinking of homogeneous matrices PVA in electrolyte and wet-spun fiber electrodes. Chemical crosslinking of homogeneous matrices converts separated fiber electrodes and electrolyte into a monolith with seamlessly integrated interface structures and all-in-one configurations, distinctly different from physical assembly and distinct interface structures of conventional FSCs. Compared with conventional FSCs, all-in-one FSCs achieve not only good electrochemical performances including high linear or volumetric capacitance (2.49 mF cm −1 or 1147 mF cm −3 ), volumetric energy density (2.93 mWh cm −3 @ 0.075 mW cm −3 ), and long cyclic life (capacitance retention of 97.9 % after 10000 cycles), but also outstanding deformation durability with high capacitance retention after long-term bending (91.1 %), twisting (91.7 %), knotting (81.2 %), folding (72.8 %) and stretching (72.1 %) deformations, thereby demonstrating reliable applications in powering electronic devices. Those findings should offer a facile and scalable design philosophy to develop mechanically durable all-in-one FSCs toward electronic textile applications.
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Journal of Biomaterials and Tissue Engineering
·
2018
·Vol. 8
·期 1
·67-79
·
IF 0.781
Ruan Rui,Zheng Minghao,Gao Junjie,Landao-Bassonga Euphemie,Chen Lianzhi,Chen Peilin,Wang Tao,Zhao Xueling
To investigate the effect of incorporating nacre into calcium phosphate cement (CPC), one of the most commonly used bone substitutes. In this study, nacre at 25 wt% and 50 wt% was incorporated into a CPC powder mixture. The composites were characterized, and their in vitro osteoblast
functions were examined. X-ray diffraction (XRD) patterns revealed that the inorganic composition of the composites mainly was consisted of aragonite, hydroxyapatite (HA) and carbonate-apatite. Scanning electron microscopy (SEM) and micro-computed tomography (micro-CT) images indicated that
the porosity of the CPC composites was increased by nacre incorporation. However, the setting time increased, and the compressive strength decreased with increased nacre addition into CPC. In addition, the in vitro degradation rate of the nacre/CPC composites was faster than that of
CPC. Cell tests revealed that nacre/CPC composites are cytocompatible and, compared with CPC, could enhance the cell adhesion, spreading and proliferation of MC3T3-E1 cells on materials. Moreover, the composites exhibited stronger osteogenicity than CPC and inorganic calcium carbonate-incorporated
CPC composites by promoting alkaline phosphatase (ALP) activity and the gene expression levels of ALP, runt-related transcription factor 2 (Runx2), osteocalcin (OCN) and osteopontin (OPN). Thus, nacre could be a promising additive to increase the biological performance of CPC.
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Catalysts
·
2020
·Vol. 10
·期 10
·1121
·
IF 3.52
Rui Pei,Weiliang Wu,Yuqian Zhang,Libing Tian,Wei Jiang,Shu-Feng Zhou
Aldo-keto reductases (AKRs) mediated stereoselective reduction of prochiral carbonyl compounds is an efficient way of preparing single enantiomers of chiral alcohols due to their high chemo-, enantio-, and regio-selectivity. To date, the application of AKRs in the asymmetric synthesis of chiral alcohols has been limited, due to the challenges of cloning and purifying. In this work, the aldo-keto reductase (AKR3-2-9) fromBacillussp. was obtained, purified and proved to be NADPH-dependent. It exhibits good bioactivity and stability at 37 °C, pH 6.0. AKR3-2-9 is catalytically active on 11 pairs of substrates such as 3-methylcyclohexanone and methyl pyruvate, among which it showed the highest catalytic activity for acetylacetone. In addition, AKR3-2-9 was able to be resistant to five common organic solvents such as methanol and ethanol, it retained high catalytic activity even in a reaction system containing 10% v/v organic solvent for 6 h, which indicates its broad substrate spectrum and exceptional organic solvent tolerance. Furthermore, its three-dimensional structure was constructed and catalytic-site-analysis of the enzyme was conducted. Notably, it was capable of catalyzing the reaction of the key intermediates of duloxetine. The extensive substrate spectrum and predominant organic solvents resistance makes AK3-2-9 a promising enzyme which can be potentially applied in medicine synthesis.Keywords:aldo-keto reductase;enzyme assay;organic solvents;chiral alcohol;substrate spectrum
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高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 8
·e71010
·
IF 4.2
Yang Zhang,Xuewei Lv,Mengjiao Jiao,Zhuoyang Li,Wenjie Wei,Guishang Pei
NaCrO 2 is an indispensable compound in the separation of vanadium from chromium in high-chromium vanadium slag, highlighting the need for comprehensive thermodynamic data for this compound. In this study, a high-purity NaCrO 2 compound was synthesized by solid-state sintering. Using density functional theory (DFT) combined with experimental measurements, the lattice dynamics and thermodynamic properties of NaCrO 2 were comprehensively investigated. The phonon structure was computed using first-principles methods, and the absence of imaginary frequencies was observed, demonstrating its dynamic stability. The low-temperature heat capacity of NaCrO 2 was measured using a physical properties measurement system (PPMS). Separation of the experimental heat capacity into lattice and magnetic contributions yields a magnetic entropy of 11.30 J K −1 mol −1 , which agrees well with the theoretical spin‑only entropy of Cr 3+ ( R ln4 = 11.53 J K −1 mol −1 ). The entropy at 298.15 K is derived as 78.25 ± 0.2 J K −1 mol −1 . The DFT-calculated thermodynamic properties show good agreement with the experimental results, confirming the reliability of the computational approach. This study provides critical thermodynamic property for the NaCrO 2 in the Na 2 O–Cr 2 O 3 system, thereby directly supplementing the fundamental thermodynamic database required for the optimization of high-efficiency vanadium–chromium separation processes.
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高影响因子
危险品化学品经营许可证（带存储）