JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2025
·Vol. 46
·期 2
·117772
·
IF 6.2
Jingdan Lei,Chunhui Wang,Xiaoyun Yang,Xiwei Zhang,Di Yuan,Xu-Jin Ge,Shike Zhang,Gui Yang,Chao Wang
AgCuTe has attracted significant interest due to their superior electrical and thermal transport characteristics. In this work, we focuses on investigating the effects of Se and S solid solution on AgCuTe thermoelectric properties. A series of AgCu(Te, Se, S) solid solutions were synthesized via melting reaction. We found these compositions effectively inhibited the typical hexagonal-to-cubic phase transition and showed features of secondary phase segregation, such as Ag 2 Te, Cu 2 Te, and Cu 2 S. These nano- to microscale chemistry fluctuations significantly affect the thermoelectric transport properties, particularly thermal transport, resulting in an exceptional low lattice thermal conductivity of 0.19 W m −1 K −1 , which was approaching the amorphous limits. Consequently, a maximum figure of merit zT up to 1.4 was obtained at 723 K for AgCuTe 0.65 Se 0.1 S 0.25 sample. This work investigates the relationships between composition, structure, and thermoelectric properties of AgCuTe, providing substantial support for the further development of high-performance AgCuTe-based materials.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2018
·
IF 2.21
Beirong Ye,Miaoliang Huang,Si Jiang,Leqing Fan,Jianming Lin,Jihuai Wu
In this paper, Se-doped NiTe electrode materials for supercapacitor are synthesized through a one-step hydrothermal method by using Ni foam as Ni source and substrate. The as-obtained Se-doped NiTe electrode exhibits maximum specific capacitance of 998.2 F g −1 at the current density of 1 A g −1 , which is better than the value of NiTe electrode 603.6 F g −1 . Moreover, the Se-doped NiTe electrode assembled with AC electrode to form an asymmetric supercapacitor (ASC), which can extend the potential window to 1.6 V, and possesses of a superior energy density and power density of 42.7 Wh kg −1 and 800.6 W kg −1 at the current density of 1 A g −1 , respectively. In addition, the ASC shows an outstanding cycling stability (76.4% retained after 10,000 cycles).
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2017
·
IF 3.582
Bo Xu,Zhiming Chen,Haijing Zhang,Yiqiang Sun,Cuncheng Li
Development of efficient catalyst with low-cost, earth-abundant metals for sustainable hydrogen generation is still an intriguing challenge. Doping of cation or anion is regarded as an effective approach for ingenious modulation of chemical composition related to the electrocatalysts for improving their activity. Herein, a ternary Ni(S 0.49 Se 0.51 ) 2 porous flakes array on carbon fiber cloth (CFC) via simultaneous sulfuration and selenylation of Ni(OH) 2 flakes. Owing to the synergistic effect between Ni, S and Se atoms, high surface area, abundant active site and good conductivity of the Ni(S 0.49 Se 0.51 ) 2 /CFC, the as-synthesized catalyst requires lower overpotential (113 mV) than pure NiS 2 /CFC and NiSe 2 /CFC to drive 10 mA cm −2 for hydrogen evolution reaction (HER) in 1.0 M KOH with good sustainability.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Biomaterials Science
·
2019
·Vol. 7
·期 12
·5044-5053
·
IF 5.251
Zi-Fei Zhou,Tuan-Wei Sun,Yun-Hao Qin,Ying-Jie Zhu,Ying-Ying Jiang,Yang Zhang,Jun-Jian Liu,Jin Wu,Shi-Sheng He,Feng Chen
One-dimensional hydroxyapatite (HA) particularly mimics the structure of mineralized collagen fibrils and displays superior mechanical properties such as toughness. Herein, we report Se-doped HA/chitosan (Se-HA/CS) biopapers constructed with self-assembled Se-doped HA nanowires and chitosan. The Se-HA/CS biopapers with high flexibility and manufacturability can not only be further processed into arbitrary shapes by folding or using scissors but also display high performances in in vitro/vivo anti-bone tumor studies. The Se-HA/CS biopapers are more inclined to inhibit the growth of tumor cells (HCS 2/8 and SJSA cells) than that of normal human bone marrow stromal cells (hBMSCs). The potential mechanisms of this meaningful anti-tumor effect were investigated, such as reactive oxygen species accumulation and the activation of apoptosis and the underlying signal pathway involved (including caspase family, Bcl-2 family and JNK/STAT3). The results demonstrate that Se-HA/CS biopapers may inhibit the growth of HCS 2/8 and SJSA cells by synchronously inducing JNK activation and STAT3 inhibition and consequently promote the apoptosis of these cells. Furthermore, the in vivo anti-tumor studies confirm that the Se-HA/CS biopapers obviously suppress the growth of patient-derived xenograft tumor models.
研究领域:
材料科学
·
生物材料
·
肿瘤学
·
生物医学工程
✓ 已验证
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2024
·
IF 5.2
Xinye Li,Lingxing Zeng,Wenbin Lai,Zewei Lei,Mingyang Ge,Chaobin Fang,Bo Weng,Qinghua Chen,Mingdeng Wei,Qingrong Qian
Sodium/potassium-ion batteries (SIBs/PIBs) as alternatives complement of Li-ion batteries (LIBs) exhibit cost-effective, appropriate redox potential, and high energy density. Unfortunately, the large volumetric expansion and severe pulverization toward anode materials of SIBs/PIBs during the charge/discharge progress limit their practical implementations. In this work, selenium doped carbon nanofibers integrated with bismuth–antimony alloy nanocrystals (denoted as BiSb-Se/CNFs) have been fabricated as anode materials for SIBs/PIBs. The hierarchical carbon nanofiber frameworks in BiSb-Se/CNFs composite not only provide sufficient space to accommodate Na/K ions, ensuring high structural stability, but also facilitate rapid electron and ion transport, enhancing the redox reaction kinetic. As expected, the BiSb-Se/CNFs electrode demonstrates a superior sodium storage capacity of 370 mAh g–1 at current densities of 0.5 A g–1 after 650 cycles, withstanding a long-term cycling of 2000 cycles and showing a remarkable capacity up to 309 mAh g–1 at 2 A g–1. Moreover, an impressive potassium storage performance with a superior capacity and outstanding reversible stability can be observed over the BiSb-Se/CNFs electrode. This work elucidates the design of alloy-type electrodes with a high lifespan in both SIBs and PIBs, which provides inspiration for practical multiapplication scenarios for anodes.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Ao Zhou,Ruitong Chi,Rong Liu,Yingjie Shi,Zhixiao Zhang,Hongwei Che,Guangsuo Wang,Jingbo Mu,Yanming Wang,Xiaorong Zhang
In this study, Se doped nickel-cobalt sulfide (Se–NiCoS) nanotube arrays with three-dimensional (3D) networks are prepared on nickel foam via a facile hydrothermal method combined with selenide reaction. The 3D networks are formed by interconnected nanosheets grown on the surface of nanotubes. Results show that the dopant amount of Se in nickel-cobalt sulfide (NiCoS) has obvious effects on both the structure and performance of the Se–NiCoS. The combined contribution of Se dopant and the unique 3D network structure can greatly improve the electrochemical performance of NiCoS. Compared with the pristine NiCoS nanotube array, the Se–NiCoS nanotube arrays demonstrate enhanced areal capacitance (2.00 and 1.48 F cm −2 at 1 and 20 mA cm −2 , respectively) and cyclic stability (capacitance retention rate of 91.2% after 5000 cycles at 5 mA cm −2 ). Furthermore, the hybrid supercapacitor assembled with Se–NiCoS nanotube arrays and carbon nanotubes (CNTs) as positive electrode and negative electrode can deliver an energy density of 37.7 Wh kg −1 at a power density of 798.4 W kg −1 . This study indicates that the 3D network structured Se–NiCoS nanotube arrays have a good practical application value in supercapacitor devices.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Linzhi Shen,Ziwen Xiong,Zhaohui Du,Hao Wang,Wenrui Li,Zhen Zhang,Hao Wu,Changsong Zhou,Yaming Zhou,Guanghua Tang,Jing Liu,Hongmin Yang
M-N-C catalysts have considerable potential in the fields of catalysis, such as highly polluting gaseous elemental mercury (Hg 0 ) oxidation. However, the direct application of these kinds of catalysts for mercury removal is stymied by their low catalytic efficiency. Heteroatom-doping in M-N-C catalysts has been proposed as a powerful strategy to the promote catalytic of Hg 0 , but the origin of boosting catalytic activity is still elusive. Herein, it is disclosed that selenium doping induces an obvious electron-acceptor effect for accelerating the Hg 0 catalytic oxidation. The model selenium-doped Cu-N-C catalyst with atomically dispersed active sites was verified by various characterization methods, such as SEM-EDS and scanning transmission electron microscopy. The optimal Cu-NC-Se with Cu/Se ratio of 1:1 exhibited the best Hg 0 removal performance, over 8-fold enhancement in their Hg 0 oxidation capacities than raw selenium-free Cu-NC. At the optimal reaction temperature of 90 °C, Cu-NC-Se achieved an average Hg 0 removal rate of 92.44% within 60 min under single pure N 2 atmosphere. As for the influence of flue gas components, the presence of O 2 promoted the removal of mercury in Cu-NC-Se, whereas CO 2 , NO and SO 2 served as slight inhibitors. Even after five cycles of the experiment, the average mercury oxidization efficiency was still remained at 88.5%, showing that Cu-NC-Se can be reused with good maintenance of the catalytic activity and atomic dispersion of Cu and Se in the structure. The unsaturated Cu sites connected with pyridinic N on the carbon matrix can serve preferential adsorption to Hg 0 and doped selenium. Meanwhile, the selenium doping accelerated Hg 0 adsorption and accept sufficient electrons for promoting Hg 0 oxidation to forming stable HgSe, which is also corroborated by the theoretical analysis results based on density functional theory. This work not only provides an alternative facile synthetic strategy for developing heteroatom-doping atomically dispersed M-N-C catalysts, but also represents a significant advance for deepening the understanding of the Hg 0 catalytic oxidation mechanism on M-N-C catalyst.
研究领域:
催化化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2021
·
IF 4.464
Qiqi Mao,Chunjie Li,Wenjing Tian,Tongqing Zhou,You Xu,Ziqiang Wang,Xiaonian Li,Liang Wang,Hongjing Wang
Electrochemical nitrogen reduction reaction (NRR) is a facile and sustainable alternative strategy to Haber-Bosch process for ammonia synthesis. Design of efficient and stable electrocatalysts is critical to NRR. Herein, a two-step method is proposed to fabricate surface Se-doping mesoporous Rh nanoparticles (Se-mRh NPs). Owing to the mesoporous structure and Se modified surface, the Se-mRh NPs exhibit a superior NH 3 yield (21.36 μg h −1 mg −1 cat. ) and Faradaic efficiency (34.54 %) in a neutral electrolyte (0.1 M Na 2 SO 4 ) relative to mesoporous Rh nanoparticles (mRh NPs). The presented synthetic approach is very valuable for design of metallic catalysts with Se modified surface for various electrocatalytic applications.
研究领域:
材料科学
·
电化学
·
催化
✓ 已验证
产品关联
DOI
高影响因子
Molecular Catalysis
·
2025
·
IF 4.9
Weitao Wang,Shuang Yue,Huan Wang,Jiaqi Zhu,Zhen-Hong He,Zhao-Tie Liu
Selective oxidation of lignin-derived vanillyl alcohol to vanillin is a vital reaction due to the widely application of vanillin. From aspect of green catalysis and sustainability, metal-free based heterogeneous catalyst for the entitled reaction is promising. In the present work, Se doped boron carbonitride (Se-BCN) nanotubes catalyst was rationally prepared and employed as the metal-free catalyst for the entitled reaction. The conversion can achieve 94.4 % with the selectivity of 89.4 % at 120 °C for 4 h, which is higher than most reported metal-based catalytic system. The reasons for the enhanced activity and selectivity of Se doped BCN nanotubes catalyst were revealed from the kinetic investigation and adsorption of vanillyl alcohol and vanillin. Mechanism study reveals that radicals are involved in the entitled reaction.
研究领域:
化学催化
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2019
·Vol. 9
·期 1
·1-9
·
IF 4.011
Huang Guojie,Lin Yaqi,Zhang Linxiu,Yan Zhihong,Wang Yudong,Liu Yi
The sulfur-selenium doped carbon quantum dots (S,Se-CQDs) were synthesized by one-step through hydrothermal method in this study, which have high fluorescence quantum yield (43%) and advanced ability to scavenge reactive oxygen species (ROS). They were characterized by transmission electron microscope (TEM), nuclear magnetic resonance (NMR), X-ray photoelectron spectroscopy (XPS), fourier transform infrared spectroscopy (FTIR). The results showed that the clearance rate of free radical reached to 40% with 200 μg/mL of S,Se-CQDs. The antioxidant activity of S,Se-CQDs is related to -SH and Se-SH on carbon quantum dots. S,Se-CQDs were able to access to cells which is beneficial to enhance the removal efficiency to ROS. In the biocompatibility experiment, the cell survival rate exceeded 95%, there was little effect on hatching rate, survival rate and heart rate of zebrafish which demonstrated that S,Se-CQDs have an excellent biocompatibility. It prompts that S,Se-CQDs will has proud application prospects in the field of biomedicine.
研究领域:
生物医学
·
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Hong Huang,Zhangfeng Shen,Biyun Chen,Xiaoyan Wang,Qineng Xia,Zhigang Ge,Yangang Wang,Xi Li
Mitochondrial oxidative stress is associated with the occurrence and development of a wide range of human diseases. The development of methodologies to alleviate oxidative stress-mediated injury may have therapeutic potential. Herein, we report the design and preparation of triphenylphosphonium-functionalized selenium-doped carbon nanodots (TPP-Se-CDs) that can efficiently scavenging hydroxyl radicals ( OH) and superoxide anions (O 2 − ) in mitochondria region. Se-CDs with two-photon blue fluorescence were initially prepared by facile hydrothermal treatment of selenomethionine, followed by the covalent conjugation with TPP. The as-obtained TPP-Se-CDs showed high colloidal stability, strong scavenging abilities towards OH and O 2 − . Moreover, TPP-Se-CDs exhibited low cytotoxicity and mitochondria targeting ability. Taking advantages of these prominent features, TPP-Se-CDs have been successfully applied to combat H 2 O 2 and phorbol 12-myristate 13-acetate (PMA) induced oxidative stress in mitochondria.
研究领域:
纳米技术
·
生物医学工程
·
材料科学
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2015
·
IF 4.097
Fengmin Qiao,Jiaomei Wang,Shiyun Ai,Lifang Li
Selenium has been successfully doped into graphite phase carbon nitride (g-C 3 N 4 ) by a simple thermal condensation method through calcinating the mixture of dicyandiamide, cyanuric acid and selenium dioxide. The morphology and composition of thus-prepared selenium doped graphite phase carbon nitride (Se-g-C 3 N 4 ) nanosheets were characterized by transmission electron microscopy (TEM), high resolution TEM, X-ray diffraction (XRD), fourier transform infrared (FT-IR) spectra and X-ray photoelectron spectroscopy (XPS). Characterization results revealed that the resultant products have typical ultrathin lamellar structure with the uniform lateral diameter of 20 nm. The amount of Se dopant is ca. 2.1 at% based on the XPS result. For the first time, ultrathin Se-g-C 3 N 4 nanosheets have been demonstrated to possess an intrinsic peroxidase activity by following the Michaelis–Menten kinetics and even have higher affinity to peroxidase substrates TMB and H 2 O 2 in comparison to that of HRP. Se-g-C 3 N 4 nanosheets is conducive to mediating electron transfer and thus to enhancing the catalytic oxidation of the substrate TMB in the presence of H 2 O 2 to produce a blue color change in aqueous solution. More importantly, a sensitive and selective method for xanthine detection was developed using xanthine oxidase and the as-prepared Se-g-C 3 N 4 nanosheets. On the basis of the high catalytic activity of Se-g-C 3 N 4 nanosheets, a rapid, sensitive, and convenient approach was developed for colorimetric detection of xanthine with detection limit 1.6 × 10 −8 mol L −1 . Taking the advantages of this, the novel Se-g-C 3 N 4 nanosheets represent a promising candidate as an enzyme mimic and may find a wide range of new applications in diagnostics and biotechnology fields.
研究领域:
生物化学
·
材料科学
·
诊断学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）