JOURNAL OF APPLIED POLYMER SCIENCE
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2018
·Vol. 136
·期 13
·47290
·
IF 1.901
Bo Zhang,Chen Xu,Guoyue Xu,Chuyang Liu,Jianchao Zhang,Tengchao Guo,Honghan Bu
An IR electrochromic film constructed by copolymer of aniline and o -nitroaniline has been successfully prepared by cyclic voltammetry. The effects of polymerization of aniline and o -nitroaniline on electrochromic properties and optical properties were investigated by cyclic voltammetry, scanning electron microscopy, FTIR spectrometer, and UV–vis spectrophotometer. The results indicate that the film can exhibit three colors (apple green, dark green, and dark blue) at different voltages of −0.1, 0, and 0.8 V. Simultaneously, a fast response time (1.89 and 4.47 s), a high coloration efficiency, a significant optical modulation (60% between −0.1 and 0.8 V) and a large average emissivity range (Δ ε max = 0.203) are achieved for the new film. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47290.
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ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Yin Xie,Yongcheng Jin,Lan Xiang
The nontoxicity and low cost make LiMn2O4 a competitive cathode material for lithium-ion batteries. LiMn2O4 has a high theoretical capacity (296 mAh g–1) when cycled in the 3 and 4 V regions. However, it displays a low practical capacity (∼120 mAh g–1) because of the unavailability of the 3 V region caused by severe Jahn–Teller distortion. The present work investigated the full utilization of LiMn2O4 in both 3 and 4 V by tuning the nanoscale interfacial properties. Li-rich structures at the surface and interface of the spinel material and nanograin strain were introduced to improve the performances and were achieved by grinding LiMn2O4 and Li2O at 700 rpm for 10 h under an argon atmosphere. The product shows a high initial discharge capacity of 287.9 mAh g–1 at 0.05 C between 1.2 and 4.6 V and retains 83.2% of the capacity after 50 cycles. The nanoscale interfacial structure was clarified by spherical aberration-corrected microscopy and XRD refinement, and complex occupancies of Li and Mn were found at the interface. A correlation between the interfacial properties and electrochemical performance was established, and the improved performance could be attributed to the polycrystalline nature of the material, the unique Li-rich interfacial structure, and the slightly elevated valence state of Mn. The present results may provide insight for further evaluating the complex mechanism of controlling the electrochemical performance of LiMn2O4.
研究领域:
材料科学
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电化学
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储能
·
锂离子电池
·
纳米材料
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FOOD RESEARCH INTERNATIONAL
·
2026
·
IF 8
Pengrui Wu,Xindi Wei,Zhihong Song,Chunling Nie,Zhonghui Shen,Yijun Liu,YanBo Wang,JianGuo Wang,Hong Zeng
Developing environmentally friendly delivery systems capable of encapsulating, protecting, and promoting the absorption of bioactive components in the human body is crucial for those with low oral bioavailability and poor stability. This study developed W/O/W emulsion-filled sodium alginate (SA) hydrogel for the co-delivery of hydrophilic riboflavin and hydrophobic curcumin. Firstly, W/O/W emulsion was prepared using peanut protein isolate (PPI)-bacterial cellulose nanofibers (BCNFs) as the hydrophilic emulsifier and lecithin as the lipophilic emulsifier, and the effect of stabilizer concentrations on emulsion stability was investigated. Results showed that PPI and BCNFs self-assembled into stable complexes through electrostatic interaction and hydrogen bonding, thereby improving the emulsification properties of PPI. Subsequently, SA was added to the outer aqueous phase of emulsions, and its influence on emulsion properties and stabilization mechanism was investigated. SA significantly improved the stability and rheological properties of PPI-BCNFs-stabilized W/O/W emulsions. Finally, the loading capacity of this system for riboflavin and curcumin and its gastrointestinal fate were evaluated. We found this delivery system efficiently co-delivered both hydrophilic and hydrophobic bioactive components and improved their photostability and thermal stability. Moreover, the bioaccessibilities of riboflavin and curcumin were significantly increased to 61.97% and 45.66%, respectively. This was attributed to SA forming a composite interfacial layer on droplets and a dense gel network in the continuous phase, thereby acting as a physical barrier to better protect the encapsulated components. This delivery system holds promise for the development of functional foods incorporating multiple nutraceuticals.
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ACS Catalysis
·
2026
·
IF 13.1
Fengwang Zhao,Ting Zeng,Xiaoli Yang,Qi Wang,Yang Zhao,Jing Zhou,Xiaofeng Yang,Chunfu Lin,Haoxi Ben,Nianxue Zhai,Xianghui Yu,Youzhu Yuan,Xiang-Kui Gu,Xingyun Li,Yanqiang Huang,XiuSong Zhao
Catalyst structure manipulation at the atomic level is important in regulating the catalytic performance. Herein, single Cr atom doping in In2O3 is shown to modulate the In–O bond with improved performance in CO2 hydrogenation to methanol. An “asymmetric site effect” concept is proposed to interpret the function of Cr doping, wherein Cr stimulates directly coordinated oxygens to form Cr and In confined oxygen vacancies as active sites for enhancing CO2 activation and lowering the energy barrier of the HCOO* to HCOOH* transformation (the rate-determining step). Meanwhile, Cr assists in maintaining the structure stability and inhibits the over-reduction of In2O3 through tethering nearby oxygen atoms. Cr–In2O3 catalyst exhibits a CO2 conversion of 9.4% and CH3OH selectivity of 92.0% under reaction conditions of 250 °C and 5 MPa, along with a long-term stability over 500 h on-stream testing. This study demonstrates a paradigm for the modulation of In–O in In2O3 to break the trade-off between the reactivity and stability of the CO2 hydrogenation reaction.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2026
·
IF 6.2
Yuqi Gao,Min Lu,Jitong Wei,Dengyu Zheng,Hongliang Duan,Mingxu Wang,Zhao Ke,Zhongyi Wu,Qing X. Li,Zhongbao Zhang
Flavonoids, secondary phytometabolites, play many roles in human health and plant resistance, growth, and development. They are commonly glycosylated in the last step of their biosynthesis. In this study, a gene encoding an efficient flavonoid glycosyltransferase, ZmUGT76B1, was cloned from maize and expressed. The enzyme activity and function were characterized. ZmUGT76B1 catalyzed selective glycosylation at 3-, 7-, 3′-, and 4′-hydroxyl sites of flavonoids to form mono-O-glycoside and di-O-glycoside products. Moreover, ZmUGT76B1 had a broad substrate preference and strict sugar donor selectivity. Guided by simulated molecular docking and simulated mutagenesis, three ZmUGT76B1 mutants, Q338P, E361P, and Q338P/E361P, were constructed. The mutation of either of the two sites substantially reduced the enzyme activity, whereas the double mutation eliminated the activity. The determination of enzyme activity and prediction of the active site of this enzyme have expanded our knowledge of maize uridine diphosphate-dependent glycosyltransferases, providing an important glycosyltransferase for metabolic engineering of mono- and dioxygenated glucosyl flavonoids.
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JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
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2026
·
IF 2.7
Qiushi Chen,Wangzhirui Cheng,Can Li,Yi Man Eva Fung,Jiaqi Wang,Han Liu,Xuechen Li
Protein glycosylation plays essential roles in various biological processes, and thus determining the glycan structure present on the protein is essential to comprehensively understand these events. However, distinguishing saccharide stereoisomers is challenging, especially when their structures are very similar and their molecular weight and potential glycosylation sites are identical. One representative example is O-linked β-N-acetylglucosamine (O-GlcNAc) and O-linked α-N-acetylgalactosamine (Tn antigen). Traditional biochemistry approaches used in separating O-GlcNAc- and Tn antigen-modified peptides mainly include chemical derivatizations, lectins, and antibodies. However, subsequent mass spectrometry (MS) analysis is still required if one aims to determine the exact glycosylation site. Herein, a straightforward approach using the ratio of relative abundance (RA) of two fragment ions (RA126.055/RA138.055) in higher-energy collisional dissociation (HCD) MS without relying on the traditional biochemistry technique is reported to discriminate between O-GlcNAc and Tn antigen. This ratio was verified by synthetic glycopeptides and proteomic analysis in HeLa cells, where 10 proteins were found to be O-GlcNAcylation and 4 proteins were found to be Tn antigen-modified. Overall, this method can be extensively employed in liquid chromatography–mass spectrometry (LC-MS)-based proteomic studies and thus is of importance in biological and biomedical research.
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INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Shuyan Qi,Yang Wang,Ling Guan,Xu Hu,Haiyang Li
This study addresses antibiotic water pollution by synthesizing Zr-doped Bi₂₄O₃₁Cl₁₀ (Bi₂₄(₁₋ₓ)Zr₁₈ₓO₃₁Cl₁₀) photocatalysts via hydrothermal method for tetracycline hydrochloride (TC-HCl) removal. Zr doping ratios (6–14%) were systematically investigated, with the optimal BZOC4 (12% Zr) degrading 91.24% of 20 mg/L TC-HCl within 120 min under 500 W xenon lamp irradiation (pH = 9). Its reaction rate constant (0.0239 min −1 ) is triple that of pristine Bi₂₄O₃₁Cl₁₀. Zr doping reduces the band gap from 3.12 eV to 2.8 eV, improves visible light utilization (absorption edge red-shifted to 525 nm), accelerates electron transfer, and reduces e − /h + recombination—supported by UV –Vis DRS, PL, and electrochemical tests. Superoxide radicals (O₂ − ·) and holes (h + ) are primary active species, confirmed by radical trapping and ESR. TOC analysis confirms 32.4% mineralization of TC-HCl to CO₂ and H₂O.This work offers new design strategies for bismuth halide-based photocatalysts in antibiotic remediation by integrating structural regulation and electronic modulation via Zr doping.
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CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Yunpeng Zhang,Yunjia Wang,Yajuan Peng,Shouping Xu,Xiufang Wen,Zehao Chen,Pihui Pi
A polystyrene-based foam with excellent mechanical properties was prepared. • The synergistic effect of low surface energy and micro-nano rough structure provides excellent anti-adhesion performance against high-temperature oil and water, enabling the material to effectively separate high-temperature emulsions. • The high tortuosity factor of the 3D microporous material ensures high separation efficiency, while the fluid shear force generated under applied pressure effectively expels the demulsified internal phases, thereby ensuring long-term separation of high-temperature emulsions. The separation of water from high-temperature emulsions in real time remains highly challenging due to the potential failure of material wettability. In this study, we develop a thermally stable oleophobic/hydrophobic microporous polystyrene-based foam (FPEI/MoS 2 PS foam) by combining a low-surface-energy fluorinated coating with a micro-nano rough structure. The foam was fabricated via a high internal phase emulsion (HIPE) templating method to construct a 3D microporous structure. Subsequently, MoS 2 was grown on the foam skeleton through a hydrothermal process, followed by the covering of a fluorinated polyethyleneimine (FPEI) functional coating. The resulting foam exhibits a rough microporous structure and thermally stable oleophobic/hydrophobic wettability (WCA and OCA above 128° even at 90 °C). Within a temperature range of 60–90 °C, the material effectively separates surfactant-free emulsions, surfactant-stabilized emulsions, and real industrial emulsions from diesel cracking processes. For W/D ⁎ (surfactant-free water in diesel emulsion), W/D (surfactant-stabilized water in diesel emulsion) and real industrial emulsions at 90 °C, the permeation flux reached 4600, 3050, and 1700 L m −2 h −1 , respectively, with all separation efficiencies exceeded 98%. Download: Download high-res image (246KB) Download: Download full-size image
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CRYSTENGCOMM
·
2025
·
IF 2.6
Lei Chen,Rui Xu,Zhi Yang,Fuyu Chang,Lu Yang,Yoonseop Byun,Eunsoo Song,Eungyeong Park,Lihui Liu,Young Mee Jung
The two-dimensional (2D) layered structure of MXene provides a large specific surface area, making it an ideal platform for optimizing geometric configurations in surface-enhanced Raman scattering (SERS) applications. In this study, we developed a novel ternary core-shell nanostructure, Ag@Cu2O-MXene, in which Ag@Cu2O core-shell nanoparticles (NPs) are uniformly anchored onto 2D Ti3C2Tx MXene nanosheets. The Ag NPs exhibit strong localized surface plasmon resonance, while the narrow bandgap and high electron mobility of Cu2O shell promote efficient charge transfer. Importantly, plasmonic coupling between the Ag core and the MXene substrate further enhances plasmon absorption, resulting in a substantial increase in SERS activity and enabling highly sensitive molecular detection. Using this composite, we achieved an ultra-low detection limit of 10–9 M for methylene blue. MXene substrate further facilitates rapid electron transfer from the Ag core to the the Cu2O shell, while its surface defects contribute additional charge carriers to Cu₂O, enhancing the utilization of photogenerated electron. Notably, the SERS enhancement was positively correlated with the thickness of Cu2O shell, highlighting the tunable nature of the Ag@Cu2O-MXene core-shell nanostructure.
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 23
·1580
·
IF 2.8
Guo Zexuan,Wang Nan,Fei Xiaomiao,Yang Feng,Zhao Man,Peng Yanyan,Zhang Jing,Jiang Dayong
The generation, transfer, and collection of plasmon-derived hot electrons represent a distinctive pathway for photodetectors to utilize solar energy. However, previously reported devices have a low internal quantum efficiency due to excessively high Schottky barrier. The coupling distance between working medium and metal nanoparticles (NPs) is one of the key factors affecting the performance of optoelectronic devices. We constructed a dual-surface plasmon-enhanced (Mg, Zn)O-ultraviolet (UV) photodetector by applying Pt NPs and found that the assembled device exhibited broad sensitivity ranging from 340 to 370 nm at room temperature. Intense dual plasmonic resonance coupling is induced in a hybrid structure of two metallic layers separated by uniform ZnO-based films. Using surface plasmon-enhanced materials, the changes in the refractive index of ZnO/Pt/MgZnO and MgZnO/Pt/ZnO heterogeneous double-layer in the dielectric environment are beneficial for the tunneling of hot electrons. ZnO/Pt/MgZnO is superior to MgZnO/Pt/ZnO in terms of responsivity and response time. The responsivity of the ZnO/Pt/MgZnO device peaks at 2.87 A/W, exhibiting the great potential of dual plasmonic resonance coupling in a UV photodetector, which was finally investigated via Mie scattering. The response time of the photodetectors in a steady-state is 0.2 s, 0.3 s, while 0.1 s, 0.73 s is the response time of the photodetectors (PDs), which paves the way for future application advancements in the field of photodetection, imaging, photovoltaics, and photochemistry.
研究领域:
光电子学
·
纳米光子学
·
等离激元学
·
半导体器件
·
光电探测
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2023
·
IF 8.7
Chen Yang,Jian Yang,Shuangshuang Liu,Mingxue Zhao,Xu Duan,Hongli Wu,Lang Liu,Weizao Liu,Jiangling Li,Shan Ren,Qingcai Liu
Owing to its feasibility, efficiency in light-harvesting and effectiveness in the interfacial charge transfer between two n-type semiconductors, constructing heterojunction photocatalysts have been identified as an effective way for enhancing the photocatalytic properties. In this research, a C–O bridged CeO 2 /g-C 3 N 4 (cCN) Step-scheme (S-scheme) heterojunction photocatalyst was constructed successfully. Under visible light irradiation, the cCN heterojunction exhibited the photocatalytic degradation efficiency of methyl orange, which was about 4.5 and 1.5 times higher than that of pristine CeO 2 and CN, respectively. The DFT calculations, XPS and FTIR analyses demonstrated the formation of C–O linkages. And the calculations of work functions revealed the electrons would flow from g-C 3 N 4 to CeO 2 due to the difference in Fermi levels , resulting in the production of internal electric fields . Benefiting from the C–O bond and internal electric field, the photo-induced holes in the valence band of g-C 3 N 4 and the photo-induced electrons from conduction band of CeO 2 would be recombined when exposed to visible light irradiation, while leaving the electrons with higher redox potential in the conduction band of g-C 3 N 4 . This collaboration accelerated the separation and transfer rate of photo-generated electron-hole pairs, which promoted the generation of superoxide radical (•O 2 − ) and improved the photocatalytic activity .
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Journal of Functional Foods
·
2023
·
IF 5.6
Yeye Hu,Xueting Guan,Ziliang He,Yuan Xie,Zhiqiang Niu,Wei Zhang,Aoran Wang,Ji Zhang,Chuanling Si,Fu Li,Weicheng Hu
Apigenin-7-O-glucoside (AG), a flavonoid glycoside, has been shown in vitro anti-inflammatory activities. To date, the mechanism of AG against colitis has not been reported. In this study, we investigated the role of AG in relieving colitis and explored its potential mechanisms in dextran sulfate sodium (DSS)-induced colitis mice. The results indicated oral administration of AG increased colon length and improved colonic histopathology. Besides, it dramatically restored the colonic expression of pro-inflammatory and anti-inflammatory mediators, as well as enhanced the expression of intestinal barrier markers such as ZO-1, occludin, claudin-1, and claudin-3. The mitogen-activated protein kinases (MAPKs) including ERK, JNK, and p38 were significantly inhibited. Moreover, 16S rDNA sequencing revealed that AG improved the abundance of Akkermansia , and reduced that of Bacteroides and Desulfovibrio . Taken together, AG supplementation relieved DSS-induced colitis by protecting the intestinal barrier, inhibiting the MAPK pathway, and modulating gut microbiota, which indicated that AG may be a good candidate therapeutic compound for sustaining gut health to lower the risk of colitis.
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