JOURNAL OF MATERIALS SCIENCE
·
2022
·Vol. 57
·期 16
·7863-7876
·
IF 4.682
Liu Shixin,Du Mingrun,Ge Yanfeng,Li Zepeng,Srivastava Gyaneshwar P.,Wang Jinhua,Wei Tong,Zou Yunling,Li Xiaodong,Li Yanchun,Wang Mingchao
High entropy oxides are novel materials with diverse compositions that have received significant interest for their mechanical and photocatalytic properties. In this study, we enhanced the mechanical and photocatalytic performance of solid state fabricated high entropy oxide (La 0.2 Nd 0.2 Sm 0.2 Gd 0.2 Y 0.2 ) 2 Zr 2 O 7 through Eu doping. Samples doped with different Eu ion concentrations demonstrated good thermal stability under high temperature without phase transformation after sintering at 1500 °C. We performed high pressure X -ray diffraction measurements and found that bulk modulus and critical pressure were improved by approximately 30 GPa and 5 GPa, respectively. This significant compression difference confirmed that Eu doping enhanced structural stability under high pressure. (La 0.2 Nd 0.2 Sm 0.2 Gd 0.2 Y 0.2 ) 1.98 Eu 0.02 Zr 2 O 7 demonstrated the best photocatalytic performance, with a kinetic constant about 1.5 times that of undoped samples. The appropriate doping concentration, smaller grain size and wider light absorption range contribute to the better photocatalytic performance irradiated under UV light. This work provides valuable insights for the design and improvement of high entropy oxide mechanical and photocatalytic performance. Graphical abstract
✓ 已验证
DOI
高影响因子
Nature Communications
·
2021
·Vol. 12
·期 1
·1-10
·
IF 14.919
Chen Mengxiao,Wang Zhe,Zhang Qichong,Wang Zhixun,Liu Wei,Chen Ming,Wei Lei
The well-developed preform-to-fiber thermal drawing technique owns the benefit to maintain the cross-section architecture and obtain an individual micro-scale strand of fiber with the extended length up to thousand meters. In this work, we propose and demonstrate a two-step soluble-core fabrication method by combining such an inherently scalable manufacturing method with simple post-draw processing to explore the low viscosity polymer fibers and the potential of soft fiber electronics. As a result, an ultra-stretchable conductive fiber is achieved, which maintains excellent conductivity even under 1900% strain or 1.5 kg load/impact freefalling from 0.8-m height. Moreover, by combining with triboelectric nanogenerator technique, this fiber acts as a self-powered self-adapting multi-dimensional sensor attached on sports gears to monitor sports performance while bearing sudden impacts. Next, owing to its remarkable waterproof and easy packaging properties, this fiber detector can sense different ion movements in various solutions, revealing the promising applications for large-area undersea detection.
✓ 已验证
DOI
高影响因子
Nano Research
·
2024
·Vol. 17
·期 8
·6795-6802
·
IF 9.5
Lu Qi,Yang Jiawei,Zhou Chaofan,Hu Zhaoning,Bu Saiyu,Guo Bingbing,Zhao Yixuan,Liao Junhao,Shang Mingpeng,Chen Ge,Jia Kaicheng,Yin Jianbo,Zeng Qiang,Lin Li,Liu Zhongfan
The transfer of graphene from metallic substrates onto application-specific substrates is usually inevitable for the applications of high-quality graphene films derived from chemical vapour deposition (CVD) approaches. Commonly used to support the graphene films during the transfer, the coating of the polymer would produce the surface contaminations and hinder the industrially compatible transfer. In this work, through the thermal imidization of polyamide acid (PAA) to polyimide (PI) and tuning of the concentration of dangling chains, we achieved the ultraclean and crack-free transfer of graphene wafers with high electronic quality. The resulting contamination-free and hydrophilic surface also enabled the observed improved cell viability in a biomedical applications. By avoiding aqueous etching or the usage of strong bases, our proposed transfer method is industrially compatible for batch transfer of graphene films towards the real applications.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 56
·期 1
·337-350
·
IF 3.553
Ning Yu-Jie,Zhu Ze-Ru,Cao Wei-Wei,Wu Lei,Jing Li-Chao,Wang Tao,Yuan Xiao-Tong,Teng Ling-Hong,Bin Peng-Shuai,Geng Hong-Zhang
The research and preparation of excellent anti-corrosion coatings is still a difficult task and critical to practical applications. In this paper, phosphoric acid, dodecylbenzenesulfonic acid (DBSA), and polyaniline (PANI) were polymerized in-situ onto graphene oxide (GO) by the one-pot method to prepare dodecylbenzenesulfonic acid-PANI/phosphorylated graphene oxide (DPPGO). The results of TEM, FTIR, Raman spectrum, XRD, TGA, and XPS analysis showed that the DPPGO was successfully prepared. The SEM observations showed that DPPGO has best dispersibility and compatibility than GO and PANI/phosphorylated graphene oxide (PPGO) in waterborne polyurethane (WPU) matrix. To achieve anti-corrosion performance, a new type of graphene-based polymer nanocomposites water-based coating was developed and tested by electrochemical measurements. Through a series of electrochemical tests, it is concluded that the anti-corrosion performance of a composite coating DPPGO is significantly improved. The excellent anti-corrosion properties are due to the perfect dispersion and good compatibility of DPPGO in WPU.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 27
·12876-12883
·
IF 3.553
Zhang Peng,Zhang Hongwei,Wang Shuhan,Lei Xueqin,Yang Jiangtao,Li Zimeng,Zhu Haibo,Bao Xiaojun,Yuan Pei
Silica hollow microspheres with moonscape-like rough surface (RS) and macroporous surface (MS) have been controllably synthesized by a water–oil–water three-phase emulsion method, which are used as supports of the heterogeneous catalysts for the catalytic hydrogenation of nitrile-butadiene rubber (NBR). It is found that Pd can be uniformly dispersed on both amino-functionalized RS and MS supports and both the catalysts show high hydrogenation activity with 100% selectivity to C=C bonds. However, the reusability of Pd/N-RS is much better than that of Pd/N-MS, maintaining 92% of activity without any regeneration treatment after five times of recycling experiment. The high activity retention is because the moonscape-like surface of the RS support is favorable for the contact of NBR macromolecules with the active sites, and more importantly, the NBR macromolecules do not need to diffuse into the interior of the catalyst, leading to fast desorption of the hydrogenated NBR from the surface of catalyst and re-exposure of the active sites.
✓ 已验证
DOI
高影响因子
JOURNAL OF POROUS MATERIALS
·
2022
·Vol. 29
·期 3
·629-640
·
IF 2.523
Li Dongdong,Hu Xuli,Zhao Hongyuan,Ding Kunjie,Li Fang,Han Shixing,Wang Hongliang,Bai Lianyang,Liu Runqiang
Carbonaceous nanomaterials have exhibited huge practical prospects as conductive sensitizers for the modification of electrodes. In this work, the nanocomposite of graphitized multi-walled carbon nanotubes@Super P Li carbon nanoparticles (GCNTs@SP-Li) was designed via a simple ultrasonication-assisted strategy, and then the GCNTs@SP-Li/GCE sensor based on the synthesized GCNTs@SP-Li nanocomposite decorating glassy carbon electrode (GCE) was successfully applied in the sensitive detection of isoproturon (ISO). For the GCNTs@SP-Li nanocomposite, GCNTs with porous structure presented excellent adsorption property, which contributed to the preconcentration of ISO and facilitated the electrolyte penetration. Additionally, GCNTs possessed good electrical conductivity owing its higher graphitization degree. More importantly, the interconnected dot-line-like structure of GCNTs@SP-Li nanocomposite acted as conductive “highways” to remarkably reduce the electron transport distance, which could significantly accelerate the process of redox reaction. Benefiting from the synergistic effect of GCNTs and SP-Li, the optimized GCNTs@SP-Li/GCE sensor showed a low detection limit of 0.1653 μM in the linear concentration of 0.7–30 μM. Additionally, the proposed sensor exhibited satisfactory recoveries from 97.2 to 101.6% towards the determination of ISO in river water and tap water. This work offers a feasible and cost-effective idea in developing the high-performance ISO electrochemical sensor.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 22
·17587-17598
·
IF 2.779
Yu Bo,Miao Chun,Wang Dandan,Li Hongji,Sun Dongshu,Jiang Wei,Liu Chunbo,Che Guangbo
The development of high-efficiency heterojunction with improved photocatalytic property is regarded as a promising way to decontaminate wastewater. In this study, Z-Scheme g-C 3 N 4 /H-TiO 2 heterojunctions with different proportions were synthesized. The photocatalytic degradation of rhodamine B (RhB) was studied under visible light irradiation. Among them, 10% g-C 3 N 4 /H-TiO 2 photocatalyst had the best performance, and the degradation rate of RhB was 65% within 120 min. In addition, 10% g-C 3 N 4 /H-TiO 2 photocatalyst had high stability, and its photocatalytic activity did not decrease significantly after four cycles. Through photocurrent analysis, it is found that the photogenerated carriers have obviously excellent separation and transfer characteristics, which makes the 10% g-C 3 N 4 /H-TiO 2 photocatalyst have good degradation performance. Electron paramagnetic resonance (ESR) experiments showed that ·OH and ·O 2 − were active radicals during degradation.
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2021
·Vol. 25
·期 10
·2471-2478
·
IF 2.647
Song Qian,Li Hui,Liu Junji,Hu Shi
Cyclic voltammetry (CV) is a powerful and popular electrochemical technique widely used to study the surface structure of materials through the electrochemical behaviors. Herein CV is utilized to study the electrochemical deposition of selenium (Se) on carbon black-supported Pt nanostructures. We synthesized carbon-loaded platinum nanoparticles (Pt/C) by microwave method and studied the electrochemical behavior of selenium on them. Through the experiment of changing the reverse potential, the corresponding relationship between the Se deposition peak and stripping peak was clarified and the deposition and stripping process of Se was proposed. Meanwhile, we synthesized cubic and octahedral nanocrystals of Pt, and used CV to study the Se deposition on these nanosctructures supported by carbon. It was found that the relative intensity of UPD peaks on Pt is different, as Pt cube @C is dominated by (100) and Pt oct @C electrode is dominated by (111) while Pt@C falls in between.
✓ 已验证
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-8
·
IF 14.7
Xu Kai,Liu Jin-Cheng,Wang Wei-Wei,Zhou Lu-Lu,Ma Chao,Guan Xuze,Wang Feng Ryan,Li Jun,Jia Chun-Jiang,Yan Chun-Hua
Oxygen vacancy (O v ) is an anionic defect widely existed in metal oxide lattice, as exemplified by CeO 2 , TiO 2 , and ZnO. As O v can modify the band structure of solid, it improves the physicochemical properties such as the semiconducting performance and catalytic behaviours. We report here a new type of O v as an intrinsic part of a perfect crystalline surface. Such non-defect O v stems from the irregular hexagonal sawtooth-shaped structure in the (111) plane of trivalent rare earth oxides (RE 2 O 3 ). The materials with such intrinsic O v structure exhibit excellent performance in ammonia decomposition reaction with surface Ru active sites. Extremely high H 2 formation rate has been achieved at ~1 wt% of Ru loading over Sm 2 O 3 , Y 2 O 3 and Gd 2 O 3 surface, which is 1.5–20 times higher than reported values in the literature. The discovery of intrinsic O v suggests great potentials of applying RE oxides in heterogeneous catalysis and surface chemistry.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 12
·7308-7320
·
IF 4.22
Hu Yongke,Xia Jiawei,Li Jin,Li Huaju,Li Yanxing,Li Shaozhong,Duanmu Chuansong,Li Bindong,Wang Xin
A highly efficient nitrogen-doped carbon black (NCB)-supported PdBi alloy nanocatalyst has been fabricated via a facile coreduction wet chemical approach. The optimal PdBi/NCB shows outstanding catalytic performance with broad substrate scope, good functional group tolerance towards direct oxidative esterification of alcohols under mild conditions in a heterogeneous catalytic system with air as the sole oxidant. A variety of benzylic and allylic alcohols were smoothly reacted with methanol and even with long-chain aliphatic alcohols, providing desired esters in good to excellent yields. Moreover, the as-prepared catalyst is easily recycled and can be reused at least five times without a significant loss of catalytic activity. Superior catalytic activity is mainly attributable to the unique structure of the catalyst, including synergetic electronic effect between Pd and Bi, as well as modulated surface character by acidification and N doping for better active components’ anchoring and dispersion, as well as reactants’ adsorption. This study provides a facial, practical, eco-friendly and efficient catalytic system for oxidative esterification of alcohols and shows promising prospect in industrial production.
✓ 已验证
DOI
高影响因子
npj Science of Food
·
2026
·
IF 9.7
Lin Shengxi,Zhang Liqiu,Wang Zimo,Li Jiayu,Cui Huiling,Bao Feifei,Di Yuning,Xu Chengbin,Dai Tianbin,Yuan Haidan,Piao Guangchun
Potentilla longifolia D. F. K. Schltdl. (GYC), a common edible vegetable in Inner Mongolia and a botanical resource historically recognized in northeastern China for its health-promoting benefits, was investigated for its prophylactic effects against metabolic dysfunction-associated steatotic liver disease (MASLD). In this study, 25 major bioactive constituents were characterized via UHPLC-QE-MS, providing a chemical blueprint for subsequent integrated network pharmacology and untargeted metabolomics analysis. Metabolic profiling of serum and liver tissue identified 18 and 15 differential metabolites, respectively, highlighting the AMPK and NF-κB axes as primary regulatory hubs. In vivo and in vitro experimental validations demonstrated that GYC intervention effectively prevented high-fat diet (HFD)-induced obesity, hepatic steatosis, and early hepatic injury. Mechanistically, GYC maintained lipid homeostasis and early hepatic inflammatory responses by activating the AMPK signaling axis and suppressing the NF-κB/MAPK pathways. These findings provide a robust scientific rationale for utilizing GYC as a functional food resource or a promising prophylactic agent for the prevention of MASLD.
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2020
·Vol. 27
·期 4
·1-11
·
IF 2.426
Hou Lei,Wang Zhe,Xu Jingmei,Chen Wenbo,Yang Cancan,Wang Yuanyuan
Mixed matrix membranes (MMMs) were fabricated by incorporating carboxylated multi-walled carbon nanotubes (MWCNTs) into a poly (arylene fluorene ether ketone) that contained amino groups (Am-PAFEK) matrix to improve CO 2 separation performance. The combination of MWCNTs and Am-PAFEK exerted a favorable synergistic effect on the permeability and selectivity of membranes. The extraordinary smooth wall of MWCNTs acts as a highway through which gas passes, providing better permeability. The Am-PAFEK matrix itself has a dense internal structure that provides high gas selectivity. MWCNTs particles evenly distributed among the Am-PAFEK membrane due to the non-covalent bond interaction between the amino and carboxyl group. Efficient CO 2 transport pathways were constructed by homogeneous dispersion of MWCNTs with in MMMs, leading to maintained good selectivity and enhanced permeability. When the amount of carbon nanotubes added was 3 wt.%, that increased by above 60% in comparison to the Am-PAFEK membrane permeability, the CO 2 /CH 4 and CO 2 /N 2 selectivity of the Am-PAFEK/MWCNTs-3% membrane achieved 35.02 and 30.09, respectively. Therefore, the strategy of blending MWCNTs with Am-PAFEK exhibited a promising approach for improving gas permeability.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）