CRYSTENGCOMM
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2021
·Vol. 23
·期 39
·6899-6908
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IF 3.545
Huimin Wang,Tingting Wang,Zibin Huang,Yizhuo Liu,Dehui Leng,Junli Wang
The growth of metal chalcogenide nanowires (NWs) on metal substrates is challenging work since the direct reactions taking place between the chalcogen (S, Se or Te) and zero-valent metal (M0) are frequently unable to regulate the crystallization of nanocrystals in an anisotropic one-dimensional (1D) manner. We here report the use of Ag2Se seeds as catalyst particles to realize the growth of metal selenide (MSe) NWs on their respective metal foil or flakes, including ZnSe/Zn, CdSe/Cd, and MnSe/Mn material systems. Metal foil or flakes (M = Zn, Cd and Mn) serve as a support substrate as well as a metal cation source during the NW synthesis. The preformed Ag2Se seeds play the roles of not only catalytic particles that initiate a so-called solution–solid–solid process to produce crystalline MSe NWs on metal substrates, but also inert impurities that promote an electrochemical anodic reaction of the metal to supply metal cations (M0 − 2e → M2+) for the NW formation. The microstructural studies by HRTEM reveal the polytypism and particularly the diameter-dependence of crystal phases and growth directions in the resulting MSe NWs, which can be rationalized from the viewpoints of the energetics and the catalyst/NW interfacial structures. These semiconductor NWs grown on metal foil or flakes may find wide use in photoelectric catalysis and devices without a transfer process of free-standing NWs onto a conductive support substrate.
研究领域:
材料科学
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纳米技术
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半导体物理
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS LETTERS
·
2020
·
IF 3.204
Peng Zhou,Mingyu Zhang,Qizhong Huang Zhang,Zean Su,Yafeng Wang,Xiaodong Wang,Yueli Hu,Yuhao Li,Zhenghao Guo
To realize high capacity and long cycling stability for lithium-ion batteries (LIBs), a new type bimetal selenides MnSe/ZnSe encapsulated in nitrogen-doped carbon nanofibers (MZS@N-CNFs) have been fabricated for lithium ion battery via electrospinning and selenization processes. Synergistic effect of the ultrafine bimetal selenides nanoparticles provides a high specific capacity while the 1D carbon nanofibers can shorten the ions pathways and improve the conductivity. When assembled as anodes for LIBs, the MZS@N-CNFs demonstrate an extremely high capacity of 1369.1 mA h g −1 and excellent cycle stability of 826.1 mA h g −1 at 1 A g −1 after 300 cycles.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Results in Physics
·
2023
·
IF 5.3
Meijie Zhu,Hua Xu,Zuoquan Tan,Le Wang
Large-area and uniform two-dimensional (2D) non-layered α-MnSe was successfully synthesized via the molecular sieve modified chemical vapor deposition (CVD). The molecular sieve serves both as a filter and a container to controllable release the Mn precursor in a stable and much lower concentration, leading to the uniform growth of 2D α-MnSe flakes. The thickness, crystalline quality and uniformity of the as-grown α-MnSe are further characterized. Our study validated the positive role of molecular sieve in the controllable growth of 2D α-MnSe, which is believed to be applicable to other non-layered transition metal chalcogenides (TMCs) and will be beneficial for their further applications in electronics, optoelectronics and spintronics.
研究领域:
材料科学
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纳米科技
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凝聚态物理
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无机化学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Yao Xu,Xin Tang,Yun Xing,Ziyu Pu,Chengshuang Ling,Qing Yang,Xiaoli Xiong
Hydrazine (N 2 H 4 ) is considered to be a highly toxic substance harmful to human body and environment, and has received much attention in the field of electrochemical detection in recent years. In this study, 3D hierarchical flowerball-like CoSe 2 /MnSe nanosheet arrays (CoSe 2 /MnSe FNSAs) were obtained using CoMn-LDH as precursor and cobalt glycerate spheres as the sacrificial template by simple hydrothermal reaction and selenization method. Bimetal selenides have more active electrochemical activity and more abundant electrochemical redox reactions. The unique hierarchical flowerball-like nanosheet array heterostructure can accelerate ionic diffusion kinetics and improve electron transfer. As a hydrazine electrochemical sensor, CoSe 2 /MnSe FNSAs exhibits excellent electrocatalytic performance with a wide detection range of 0.001–7.45 mM and a low detection limit of 0.4 μM. This strategy provides a new choice for the detection of environmental organic pollutants.
研究领域:
材料科学
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环境科学
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Lvlv Gao,Enshen Zhang,Yu Sun,Jiarui Huang,Sang Woo Joo
Nitrogen-doped, carbon-coated (Zn 0.71 Mn 0.29 )Se/MnSe porous nanospheres (Zn–Mn–Se@NC) were designed via a co-precipitation method and a vapor-phase selenization strategy, which maintained a capacity of 290 mAh/g for 5 A/g after 1000 cycles and 190 mAh/g at 10 A/g. The satisfied cycling performance was due to the porous nanosphere that relieve volume effect of electrode. Furthermore, the heterogeneous interface formed by (Zn 0.71 Mn 0.29 )Se and MnSe enhances thermodynamic stability and electrochemical reaction kinetics considerably, improving the electron/Na + transfer rate. Furthermore, Zn–Mn–Se@NC, a bimetallic selenide, exhibits superior conductivity that improves the rate capacity of the Zn–Mn–Se@NC electrode. As an anode, the long-cycle and high-rate sodium-ion batteries using the Zn–Mn–Se@NC porous nanospheres have potential applications in electronic 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
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Panwang Hu,Bangxiang Liu,Changkun Xia,Hengjia Zhu,Mengzhu Wang,Xiangheng Niu
With the attractive advantage of catalytic signal amplification , noble metal-based peroxidase-mimicking nanomaterials have been intensively used to establish optical methods for hypertoxic Hg 2+ detection. However, in these methods the requirement of high-concentration H 2 O 2 can lead to secondary pollution, and the noble metals used result in these assays’ high cost. Therefore, exploring new categories of enzyme mimics to develop environmentally friendly and low-cost approaches for Hg 2+ sensing is highly desired. Herein we proposed a novel noble metal-free material, MnSe microparticles , featuring specific Hg 2+ -suppressed oxidase-like catalytic activity , to fabricate a green, cheap, and high-performance turn-off approach for Hg 2+ detection. The MnSe microparticles with a polyhedral structure were obtained via a one-pot solvothermal process, showing excellent oxidase-like activity to catalyze the oxidation of colorless 3,3′,5,5′-tetramethylbenzidine (TMB) to its blue product. The introduction of Hg 2+ can significantly mask their active sites via forming an inert layer of HgSe outside the MnSe microparticles, thus suppressing the TMB catalytic color reaction. Based on the turn-off principle, colorimetric quantification of Hg 2+ was realized with high sensitivity and specificity. By integrating smartphone sensing with 3D-printed accessories and paper strips, a portable platform for the convenient detection of Hg 2+ was further established, demonstrating its great practicability in real analysis.
研究领域:
分析化学
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环境科学
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纳米材料科学
✓ 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）