CHINESE JOURNAL OF CATALYSIS
·
2026
·
IF 17.2
Yixin Li,Jianhao Qiu,Guanglu Xia,Qiying Liu,Biyao Fang,Meng Liu,Chen Chen,Jianfeng Yao
The selective cleavage of C α –C β bonds is of great significance to lignin valorization, and photocatalysis offers an eco-friendly pathway to achieve this process. Here, graphitic carbon nitride (g-C 3 N 4 ) modified with hollow tubular In 2 O 3 was constructed via the calcination method for the photocatalytic cleavage of lignin C α –C β bonds. MIL-68(In) was used as the precursor of In 2 O 3 , imparting a unique hollow tubular structure and a relatively large specific surface area. The hollow tubular structure is helpful for light penetration and scattering, as well as rapid migration of the lignin substrate. The Z-scheme g-C 3 N 4 /In 2 O 3 heterojunction exhibited 92.1% conversion (corresponding benzaldehyde yield: 82.4%) of the lignin model compound 2-phenoxy-1-phenylethanol (PP-ol), outperforming pure In 2 O 3 and g-C 3 N 4 by 40- and 2.3-fold, respectively, under 395 nm light illumination. By varying the illumination wavelength, the conversion and yields of the g-C 3 N 4 /In 2 O 3 composites were found to follow wavelength-dependent reactivities. Additionally, photogenerated holes are capable of converting PP-ol into benzoic acid, whereas 1 O 2 mainly converts PP-ol into benzaldehyde. This work could encourage the application of metal-organic frameworks in biomass conversion and provide insight into photocatalytic lignin valorization.
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DOI
PubMed
高影响因子
Journal of Animal Science and Biotechnology
·
2026
·Vol. 17
·期 1
·77
·
IF 7.9
Li Yanqing,Fu Min,Yu Lijuan,Zhang Zhen,Xue Zhiyong,Huang Lanhui,Olsen Rolf Erik,Yao Yuanyuan,Yang Yalin,Ran Chao,Wang Chen,Ding Qianwen,Zhou Zhigang
Background The application of traditional vitamin C (VC) and sodium acetate (SA) in aquafeeds is hampered by significant limitations. VC suffers from poor stability during feed processing and storage, as well as low bioavailability. SA is highly hygroscopic, thermally unstable, and rapidly absorbed, leading to short duration of action. This study aimed to design, synthesize, and evaluate tetraacetyl vitamin C ester (TVCE), a novel VC-acetic acid conjugate, as a superior alternative. Results TVCE was successfully synthesized via a one-step acetylation reaction with high yield (90%) and purity (> 95%). By optimizing the distillation recovery process, the by-product acetic acid from the reaction was efficiently recovered and recycled. TVCE demonstrated excellent lipophilicity, remarkable thermal stability (withstanding 160 °C), and was efficiently hydrolyzed by pancreatic lipase in simulated intestinal fluid, indicating its function as a prodrug. In zebrafish, TVCE enhanced systemic antioxidant capacity (increasing superoxide dismutase activity and total antioxidant capacity, while decreasing malondialdehyde content) comparably or superiorly to sodium VC-2-phosphate, even at a lower VC-equivalent dosage. In tilapia, dietary inclusion of TVCE, particularly at 0.1%, significantly improved the weight gain rate and survival rate ( P < 0.05). Notably, despite providing only 48% of the acetate equivalent found in the physical mixture (sodium VC-2-phosphate + SA) group, TVCE still demonstrated superior performance. Furthermore, TVCE supplementation ameliorated liver and intestinal health, as evidenced by reduced serum alanine aminotransferase, diamine oxidase levels, and liver total triglyceride levels, improved tissue morphology, and an optimized gut microbiota structure characterized by an increased abundance of Bacteroidota. Conclusions TVCE is successfully synthesized through a simple, green, and environmentally friendly process, which has successfully achieved the co-production of TVCE and acetic acid. TVCE effectively overcomes the stability and bioavailability issues of conventional VC and SA. In vivo studies demonstrated that TVCE significantly enhances growth performance, antioxidant status, and liver-intestine health in fish. These benefits are attributed to the synergistic effects of VC and acetic acid released upon hydrolysis, which results in a higher biological titer and achieving a "1 + 1 > 2" outcome. These findings establish TVCE as a promising multi-functional nutritional precursor with significant application potential in aquatic feeds.
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高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Dingli Sun,Xukun Yang,Jing Chang,Yifan Li,Yixin Zhang,Anran Guo,Feng Hou,Jiachen Liu,Liwen Yan
The extreme aerothermal environments resulting from hypersonic flight create significant challenges for thermal protection materials and structures. As hypersonic vehicles continue to evolve, the development of novel materials with excellent thermal resistance, low thermal conductivity, and outstanding mechanical performance has become increasingly essential. To address this issue, a porous ZrC/C material with a hierarchical structure was fabricated via a facile precursor conversion method. The unique hierarchical structure endowed the material with an ultra-low thermal conductivity of 0.08-0.31 W/(m·K) at room temperature and merely 0.44-0.89 W/(m·K) at 1000 °C, as well as a relatively high compressive strength of 0.86-7.25 MPa. More importantly, even after heat treatment at 2000 °C, the material could still retain its porous three-dimensional framework structure, exhibiting outstanding high-temperature thermal stability. Meanwhile, in comparison with other porous carbon materials, the oxidation resistance of porous ZrC/C material was enhanced. Thus, the porous ZrC/C represented a promising candidate for ultra-high temperature thermal insulation application.
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Polymers
·
2026
·Vol. 18
·期 11
·1398
·
IF 5.8
Jianing Zong,Kaize Si,Jingjing Li,Xiaomei Wang,Xu Zhang
SiOxanodes are highly promising for next-generation lithium-ion batteries due to their superior theoretical capacity. However, issues such as drastic volume expansion and low initial Coulombic efficiency (ICE) impede their practical use. While macroporous architectures can mitigate these challenges, traditional fabrication often depends on tedious hard templating methods and significant organic solvent consumption. In this work, we report a sustainable, emulsion-self-templated and organic solvent-free strategy to synthesize a carbon-coated 3D macroporous SiOx/C composite (3DM-SiOx/C@C). Our approach uniquely integrates radical polymerization with a water-in-oil emulsion and sol–gel process, followed by chemical vapor deposition (CVD). The 3D macroporous framework is generated via in-situ emulsion droplets acting as self-templates, effectively eliminating the need for external sacrificial templates and toxic etchants. Notably, this organic solvent-free process achieves an exceptional precursor to (precursor + organic solvent) mass ratio of 1.0, contrasting sharply with conventional methods (0.0044–0.17). The resulting hierarchical structure, characterized by interconnected macropores and a uniform carbon coating, significantly enhances structural integrity and electronic conductivity. Electrochemical evaluations reveal that 3DM-SiOx/C@C exhibits an improved ICE of 74.32% and long-term cycling stability even at a high current density of 1.0 A g−1compared to non-porous and uncoated counterparts. This integrated synthesis offers a green and scalable pathway for developing high-performance silicon-based anodes for large-scale energy storage.
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Antioxidants
·
2025
·Vol. 14
·期 6
·689
·
IF 6.6
Jun Liu,Yansheng Zhao,Fei Leng,Xiang Xiao,Weibo Jiang,Shuntang Guo
Soy protein isolate (SPI) is a high-purity protein from defatted soybeans, providing emulsifying and gelling functions for plant-based foods and supplements. Hydrolysis can facilitate the production of bioactive small-molecule proteins or peptides with potential functional applications. In this study, 20% hydrolyzed soy protein (20% HSP) was prepared from SPI, and the effects of 20% HSP and SPI on alleviating oxidative stress inCaenorhabditis elegans(C. elegans) and regulating immune–gut microbiota in cyclophosphamide (CTX)-induced immunocompromised BALB/c mice were investigated. InC. elegans, both SPI and 20% HSP (300 μg/mL) enhanced locomotive activities, including body bending and head thrashing, and improved oxidative stress resistance under high glucose conditions. This improvement was mediated by increased antioxidant enzyme activities (SOD, CAT, and GSH-Px), while malondialdehyde (MDA) content was reduced by 60.15% and 82.28%, respectively. Both of them can also significantly extend the lifespan of normalC. elegansand paraquat-induced oxidative stress models by inhibiting lipofuscin accumulation. This effect was mediated through upregulation ofdaf-16and suppression ofdaf-2andakt-1expression. In immunocompromised mice, 20% HSP alleviated CTX-induced immune dysfunction by increasing peripheral white blood cells and lymphocytes, attenuating thymic atrophy, and reducing hepatic oxidative stress via MDA inhibition. Gut microbiota analysis revealed that 20% HSP restored microbial balance by suppressingEscherichia-Shigellaand enriching beneficial genera, likePsychrobacter. These findings highlight 20% HSP and SPI’s conserved anti-aging mechanisms viadaf-16activation inC. elegansand immune–gut modulation in mice, positioning them as plant-derived nutraceuticals targeting oxidative stress and immune dysregulation.
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高影响因子
FUEL
·
2022
·
IF 8.035
Jiayu Hao,Yanqiu Wang,Kuang Sheng,Zhongliang Tian,Yang Liu,Wenzhang Li,Jie Li
The development of new regulation strategy for constructing functional carbon skeletons is a standing challenge for oxygen reduction reaction (ORR). Herein, the locally ordered graphene microcrystals with suitable N -sites derived from glucose are synthesized under the assistance of low melting point zinc molten salt . Utilizing the structural features of graphene microcrystals (“house of cards” model), the work function of carbon skeleton is reduced after inducing the conversion of bridging sp 3 -C to bridging sp 2 -C (ratio of sp 2 -C to sp 3 -C increases from 3.75 to 7.41). The lower work function of locally ordered microarchitectures decreases the long-range electron transfer barrier in outer-Helmholtz plane. And the synergy between pyridinic N and graphitic N is beneficial for enhancing short-range electron transfer process in inner-Helmholtz plane. After rearrangement of carbon skeletons, the half-wave potential can increase from 0.846 V to 0.874 V, and the HO 2 – by-product yield decreases from 31.5 % to 6.9 %. Furthermore, the discharge voltage of locally ordered microarchitecture (1.31 V) at 10 mA cm −2 can surpass the commercial Pt/C (1.25 V) in Zn-air battery devices. In brief, it provides a new direction of structure design for carbonaceous catalysts.
研究领域:
材料科学
·
电化学
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JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Cong Gao,Wei Sun,Weitong Zhang,Qiao Zhang,Shanyi Guang,Qianjin Chen
Open-framework crystal structured vanadates have been extensively investigated as cathode materials for aqueous zinc-ion batteries (ZIBs). However, the inherent challenges of poor electronic conductivity and structural instability compromise the rate capability and overall cycle life. Herein, we first successfully synthesized octahedral MIL-101(V) and prepared the Zn 3 (OH) 2 V 2 O 7 ·2H 2 O@C (ZVOH@C) composite by in-situ electrochemical conversion of MIL-101(V)-derived crystalline V 2 O 3 and carbon composite (V 2 O 3 @C). The ZVOH@C composite of open-framework crystal structured Zn 3 (OH) 2 V 2 O 7 ·2H 2 O and conductive carbon skeleton not only possesses more active sites, more stable crystal structure and higher electrical conductivity , but also provides faster Zn 2+ diffusion kinetics. As expected, the ZVOH@C composite electrode exhibits excellent capacity of 506.3 mAh/g at a current density of 1.0 A/g, exceptional rate performance (375.7 mAh/g at 20.0 A/g), and impressive long-term cycling stability, maintaining 314.5 mAh/g over 5000 cycles at 20.0 A/g. This study demonstrates a promising method for designing new cathode materials through in-situ electrochemical synthesis for ZIBs .
研究领域:
材料科学
·
电化学
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·Vol. 45
·期 1
·116855
·
IF 5.8
Jintao Zhang,Shuai Xu,Chunmei Wen,Jiale Huang,Jiaqi Li,Zhongzheng Wu,Renda Wang,Fangfang Ge,Gaowei Zhang,Zhongqiang Fang,Jun Li,Tongmin Zhang,Xuan Meng,Bingsheng Li
High-entropy carbide ceramics (Ti 0.25 Zr 0.25 Nb 0.25 Ta 0.25 )C with a single-phase rock-salt structure were prepared by hot-pressed sintering. These ceramics were irradiated with 500 keV He 2+ ions to fluences of 5 × 10 16 ions·cm −2 and 1 × 10 17 ions·cm −2 at room temperature to 700 °C. The investigation into irradiation-induced lattice swelling was conducted using grazing incident X-ray diffraction, while microstructure evolution was characterized through transmission electron microscopy . Lattice expansion induced by the He ion irradiation was identified, which highly depends on the irradiation temperature and fluence. Notably, the lattice expansion diminishes with rising irradiation temperature primarily as a result of the dynamic annealing effect . Nano-sized He bubbles , with an average diameter of less than 1 nm were uniformly dispersed within the grain interior. Notably, He bubble nucleation does not exhibit a preference for grain boundaries at 700 °C irradiation. Following He ion irradiation at 350 °C and 700 °C, dislocation loops of 1/3<111> and 1/2<110> with sizes in the ranges of several nanometers were observed. The present study provides insights into high-entropy carbide ceramics with potential applications in the field of nuclear energy.
研究领域:
材料科学
·
核材料
·
辐照损伤
·
陶瓷
·
微观结构表征
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2021
·
IF 5.302
Chen Xie,Shaolei Song,Guanzhong He,Zhihui Mao,Cuncheng Ma,Tong Zhang,Pengfei Hu,Qiang Zhen
Poor antioxidant and thermal-shock capacities of C/C composites thermal barrier coating (TBC) caused by cracking and shedding of coatings has been a major obstacle blocking the development of C/C composites. Herein, in-situ growth of whisker reinforced silicon carbide transition layer and inter-embedding mechanism of multi-gradient coatings were brought into the design of TBC to enhance the antioxidant and thermal-shock capacities. A three-layer gradient coating SiC-SiC w /ZrB 2 -SiC/ZrSiO 4 -aluminosilicate glass (ZAG) from inside to outside, in which ZrB 2 -SiC/ZAG serve as oxygen barrier layers with self-healing ability and SiC-SiC w provides thermal stress buffering and bonding against cracking and shedding of coatings, is designed. The ZAG mainly forms a dense oxygen blocking frontier with self-healing ability through fluidized glass, while the ZrB 2 -SiC can react actively with infiltrated oxygen in a way of self-sacrifice, preventing oxygen erosion to C/C matrix and SiC-SiC w transition layer. As a result, the collaborative work among layers endows this coating with excellent high temperature service performance. This work provides a new insight for the design of excellent TBC.
研究领域:
材料科学
·
陶瓷涂层
·
高温材料
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复合材料
·
表面工程
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Zongsheng Chen,Yanxi Ma,Hui Kang,Ting Liu,Hao Song,Ludan Chen,Yingluo He
The development of highly active catalysts for the catalytic conversion of oxygen-containing aromatics in lignite under mild conditions is of crucial importance for the production of clean liquid fuels. In this study, an in situ nitrogen-doped carbon-coated Ni@C/g-C 3 N 4 catalyst was fabricated. The abundant lone-pair electrons on nitrogen atoms within the g-C 3 N 4 support can coordinate with nickel, facilitating the migration of electrons toward the nickel surface. This electron transfer process favors the formation of Ni δ+ active sites with low electron cloud density, thereby enhancing the hydrogenation catalytic activity of the catalyst. The catalyst exhibited exceptional performance in lignite hydrodeoxygenation (HDO): under conditions of 80 °C, 1.5 MPa H 2 , and a reaction time of 1.5 h, 100% conversion of the lignite model compound benzyl phenyl ether (BOB) was achieved. Furthermore, the catalyst demonstrated remarkable hydrodeoxygenation activity, with high selectivity toward various oxygen-containing model compounds, including methyl nonanoate and 2,6-dimethylphenol. The optimal catalyst was applied to the catalytic conversion of the soluble portion (SP) of Naomaohu coal (NMHC). Results indicated that, compared with the SP, the hydrogenated soluble products from catalytic hydrogenation conversion (SP CHC ) showed a significant increase in the variety and quantity of aromatic and alkane compounds, while the relative contents of phenols, alcohols, esters, and ethers were reduced. These findings fully confirm that the Ni@C/g-C 3 N 4 catalyst can effectively cleave C C and C O bonds during the hydrogenation conversion of the SP, providing theoretical guidance for the conversion of lignite into high-quality clean liquid fuels.
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Science Advances
·
2022
·Vol. 8
·期 40
·
IF 14.957
Jingzhong Qin,Bo Han,Xixi Liu,Wen Dai,Yanxin Wang,Huihui Luo,Xiaomei Lu,Jiabao Nie,Chensheng Xian,Zehui Zhang
The cleavage and functionalization of recalcitrant carbon─carbon bonds is highly challenging but represents a very powerful tool for value-added transformation of feedstock chemicals. Here, an enzyme-mimic iron single-atom catalyst (SAC) bearing iron (III) nitride (FeN 3 ) motifs was prepared and found to be robust for cleavage and cyanation of carbon–carbon bonds in secondary alcohols and ketones. High nitrile yields are obtained with a wide variety of functional groups. The prepared FeN 3 -SAC exhibits high enzyme-like activity and is capable of generating a dioxygen-to-superoxide radical at room temperature, while the commonly reported FeN 4 -SAC bearing FeN 4 motifs was inactive. Density functional theory (DFT) calculation reveals that the activation energy of dioxygen activation and the activation energy of the rate-determining step of nitrile formation are lower over FeN 3 -SAC than FeN 4 -SAC. In addition, DFT calculation also explains the catalyst’s high selectivity for nitriles.
研究领域:
催化化学
·
有机化学
·
材料科学
·
理论化学
·
可持续化学
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Wenjun Wang,Kai Wang,Pengcheng Li,Miao Wang
Integration and miniaturization of electronic devices means efficient thermal management is urgently required. In this paper, thermally conductive but electrically insulated boron nitride (BN) is strung by polyacrylonitrile (PAN) fibers to form a flexible and porous BN@PAN film. Subsequently, solution impregnation combining cold pressing is used to fabricate sandwich-like structure SAT/BN@PAN (SBP) that alternately layered by hydrate salt sodium acetate trihydrate (SAT) and BN@PAN film. The flexible and electrically insulated SBP film possesses high leakage-proof temperature and latent heat. Meanwhile, the sandwich-like structure increases in-plane thermal conductivity by 20 times thus largely promotes anisotropic heat transfer. Consequently, the SBP film heats electronics by 10 °C at −40 °C via heat release from solidification maintaining its steady working cycles. More importantly, the SBP film can suppress overheating by 50 °C at 150 °C via melting and thermal chemical reaction indicating potential in thermal runaway prevention. The wide-range (-40 ∼ 150 °C) thermal management capability and simple fabrication technique of the sandwich-like SBP film provide application potential in advanced electronics devices.
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