JOURNAL OF THE CHINESE CHEMICAL SOCIETY
·
2017
·Vol. 64
·期 11
·1308-1315
·
IF 0.935
Ming-Hai Zhang,Guo-Bin Yi,Xi-Hong Zu,Hai-Liang Huang,Yun-Jia Wang,Jian-Chao Wang,Ben-Bin Zhong,Hong-Sheng Luo
In this study, the galvanic displacement reaction between silver and AuCl 4 − was carried out to synthesize a series of silver nanowire (Ag NW) @ gold nanoparticle (Au NP) hybrid nanowires. The influence of Ag NW @ Au NP hybrid nanowires on the fluorescence properties of the poly (3-hexylthiophene) (P3HT) was investigated. The particle sizes of Au NPs on the hybrid nanowires could be adjusted by varying the reaction time and the concentration of the HAuCl 4 solution. Furthermore, steady-state fluorescence measurements showed that the fluorescence intensity of the P3HT films was higher on various Ag NW @ Au NP hybrid nanowires compared to that on a bare silicon substrate. This was due to the increase in the intensity of electromagnetic field by the localized surface plasmon resonances of Au NPs and surface plasmon polaritons of Ag NWs from the hybrid nanowires. The results were further confirmed by the Raman spectra of the P3HT films on different substrates.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Tianyi Hang,Chenhui Xu,Jiahui Shen,Jiajia Zheng,Lijie Zhou,Mengjia Li,Xiping Li,Shaohua Jiang,Pingan Yang,Wei Zhou,Yiming Chen
Nowadays, functional electronic devices with excellent flexibility and thermal management capability for effective electromagnetic wave absorption are urgently in demand. Herein, a novel and highly flexible silver nanowire (AgNW)/iron nanowire (FeNW) decorated melamine composite foam (AgFe-MF) was prepared via simple dip-coating process. Owing to optimal impedance matching, synergistic dielectric and magnetic losses as well as three-dimensional porous structure, the AgFe-MF with an ultra-low filler content (0.22 vol%) exhibited an outstanding minimum reflection loss of −69.61 dB, and the best effective absorption bandwidth ( EAB ) could reach up to 6.37 GHz. Importantly, the EAB of long-time working AgFe-MF was enhanced to 7.01 GHz after 1000 compress-release cycles under 40 % strain. Besides, it also featured considerate Joule heating capacity and achieved a saturation temperature of over 85.7 ℃ under 2.6 V voltage. The impressive thermal isolation and long-term stability ensured the safety used as portable heater. Therefore, this work will provide a vital slight for fabricating smart wearable electronic devices with integrated anti-electromagnetic radiation and personalized thermal management performances towards potential thermal and health threats.
研究领域:
材料科学
·
电子工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2015
·Vol. 27
·期 3
·3021-3025
·
IF 1.569
Zhang Xiwei,Tang Zhenjie,Hu Dan,Wang Zhi,Yu Fengjun,Cui Haitao,Xu Tongshuai,Ju Lin
A facile method was used to oxidize p-type Zinc Selenide (ZnSe) nanowires into n-type Zinc Oxide (ZnO) through a 700 °C annealing process in air. Single crystal ZnSe nanowires, with a hole concentration of 0.805 × 10 18 cm −3 and
a negative photoconductivity, were oxidized into polycrystalline ZnO nanowires with an electron concentration of 4.88 × 10 18 cm −3 and a positive photoconductivity. Additionally, both the as-synthesized ZnSe nanowires and the post-oxidized ZnO nanowires presented excellent optoelectronic properties. This method can be used to construct radial p–n junctions or other nano-devices based on a single NW through a regioselective oxidation process.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF CRYSTAL GROWTH
·
2013
·
IF 1.552
Junli Wang,Tingting You,Hui Feng,Kangmin Chen,Bin Xu
Template growth and catalytic growth are two typical mechanisms that are often used to produce one-dimensional II–VI semiconductor nanostructures. Here we report the selective syntheses of ZnS nanowire-bundles and nanowires respectively based on these two different mechanisms. Oleylamine is employed as solvent and coordinating agent, which induces a template growth mechanism and thus yields ZnS nanowire-bundles composed of thin nanowires. With adding AgNO 3 into oleylamine, an Ag 2 S-catalyzed growth mechanism is initiated and is found much stronger than the template growth, leading to ZnS nanowires of a relatively thick diameter. The proofs of the template mechanism arising from oleylamine and the catalytic mechanism based on Ag 2 S catalytic particles have been provided and meanwhile the competition and transition between such two mechanisms are discussed.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 56
·33965-33971
·
IF 3.119
Haihui Liu,Pengfei Liu,Mengqi Zhang,Zihan Tian,Ning Wang,Yanxin Liu,Xingxiang Zhang
Light-weight, mechanically flexible, transparent thermoelectric devices are promising as portable, and easy-to-integrate energy sources. Poly(3,4-ethylenedioxythiophene) nanowires (PEDOT NWs) possessing high electrical conductivity were synthesized by a facile self-assembled micellar soft-template method. And then, Te nanowires (Te NWs) with high Seebeck coefficient were easily synthesized by the solution process and then added as an inorganic filler to form the PEDOT NW/Te NW nanocomposite films via a simple and convenient vacuum filtration method. The thermoelectric (TE) properties of the nanocomposites were characterized in this research. A maximum power factor of 58.03 μW m−1 K−2 is obtained from the film containing 90 wt% Te NWs at room temperature, which is dozens of times that of the pure PEDOT NW film. This work uses the as-prepared PEDOT NWs/Te NW (90 wt%) nanocomposite film to fabricate a flexible thermoelectric generator and an output voltage of 2.8 mV was generated at a temperature difference of 13.5 K between the environment and human body.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2018
·
IF 0
Xinzhi Hu,Kun Zhang,Jing Zhang,Shiren Wang,Yiping Qiu
In recent years, the thermoelectric properties of inorganic/polymer composites have been markedly improved. However, the enhancement mechanism in inorganic/polymer composites is still far from clear. In this work, we fabricate a novel type of thermoelectric composite by mixing high-mobility poly(3,4-ethylenedioxythiophene) nanowire with tellurium nanowire and investigate the thermoelectric properties by varying the loading of tellurium nanowires and the underlying enhancement mechanism. We find that the addition of tellurium nanowire can enhance the thermoelectric power factor of inorganic/polymer nanowire composites by ∼40%. We, for the first time, quantitatively interpret the effect of energy filtering on thermoelectric power factor enhancement in polymer inorganic composites by employing the hopping transport theory. In contrast to the series/parallel connected model, we determine that the energy filtering is more feasible to physically explain the thermoelectric enhancement. It can numerically explain the enhancement in Seebeck coefficient, electrical conductivity, and power factor. We believe it is assigned to the high carrier mobility in nanowire composites and proper energy barrier at polymer/inorganic interfaces.
研究领域:
材料科学
·
物理化学
✓ 已验证
产品关联
DOI
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
·
2023
·Vol. 220
·期 5
·2200612
·
IF 2
Shuzuo Liu,Dongmei Yang,Yuxin Ren,Jiaming Song,Peng Hu,Yang Jiao,Haibo Fan,Feng Teng
Self-powered and flexible photodetectors exhibit great potential in the application of optical communication, deep space exploration, and other related fields. Herein, a self-powered ultraviolet photodetector based on ZnO nanowires/Te nanowires heterojunction has been prepared by two-step vacuum filtration method, which also has superior flexibility and fast response speed. The obtained photodetector has a high photocurrent (about 1 μA) at 5 V bias under 365 nm UV light illumination and a fast response speed (3.47/0.13 s). Even if the bending angle reaches 90°, its photocurrent still maintains about 0.5 μA under 5 V bias, showing superior flexibility. Under 0 V bias, the photocurrent of the photodetector is 0.18 nA and the response time is 65/140 ms, displaying its good self-powered characteristic and fast response speed. These superior properties are caused by the flexibility of ZnO nanowire film and Te nanowire film, and the heterojunction is formed between ZnO and Te. The obtained results provide a solid foundation for the further development of flexible optoelectronic devices based on ZnO nanostructures.
研究领域:
材料科学
·
光电技术
·
纳米科技
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2018
·
IF 5.116
Shaoyun Chen,Xingying Zhang,Ben Liu,Hong Shi,Fang Chen,Chenglong Hu,Jian Chen
The novel carbon-fenced conductive silver nanowires-supported hierarchical polyaniline nanowires have been successfully designed to exploit the synergistic effect for electrochemical energy storage . The electronic conductive hybrid polyaniline@carbon@silver nanowires nanocomposite electrode leads to a high specific capacity (785 C/g at 0.5 A/g) and good cycling stability (94.1% after 3000 cycles) compared with the electrode without silver nanowires, and it is also superior or close to some polyaniline-based materials. The presence of silver nanowires on hierarchical polyaniline nanowires may provide a least resistance path to electrons, which can accelerate electron transport between the current collector and the active material to enhance the specific capacity. The carbon shell fenced on conductive silver nanowires can be served as a good physical substrate to promote the polyaniline growth with well-defined hierarchical structure, and hold the polyaniline fragments together and maintain their electrochemical stability during charge-discharge process. The excellent electrochemical behavior is in combination with the ideal form of hierarchical architecture, which suggests that the as-prepared polyaniline@carbon@silver nanowires electrode has the significant potential to be used as a promising electrode material for lightweight and flexible energy storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Nano Research
·
2021
·Vol. 15
·期 2
·1087-1093
·
IF 8.897
Li Leigang,Wang Pengtang,Cheng Zifang,Shao Qi,Huang Xiaoqing
The sluggish reaction kinetics of oxygen evolution reaction (OER) has largely lowered the efficiency of electrochemical water splitting. Ir represents one of the state-of-the-art electrocatalysts for promoting OER especially in acidic electrolytes. However, it remains a formidable challenge to synthesize high-quality one-dimensional (1D) Ir-based nanostructures for improved electrocatalytic performance. Herein, a template-assisted synthesis method is reported wherein 1D porous Ir-Te nanowires (Ir-Te NWs) are synthesized with Te NWs serving as the template. The Ir-Te NWs exhibit highly enhanced OER performance compared to commercial IrO 2 and Ir/C. In detail, the overpotentials to reach 10 mA·cm −2 are 248 and 284 mV in 1 M KOH and 0.5 M H 2 SO 4 , respectively, much lower than those of commercial catalysts. The Ir-Te NWs also show smaller Tafel slopes than commercial IrO 2 and Ir/C, signifying faster reaction kinetics. Besides, much more durable OER activity can be maintained for Ir-Te NWs with negligible decay during 25 and 20 h stability tests in 1 M KOH and 0.5 M H 2 SO 4 , respectively. Further analysis indicates that the significantly improved OER performance of Ir-Te NWs could be ascribed to the larger electrochemical surface area and smaller electrical resistance. More significantly, the templated synthesis of Ir-Te NWs can be facilely extended to the fabrication of other metal-Te NWs including Ru-Te, Rh-Te and Pt-Te NWs. The design and synthesis of 1D metal-based NWs in this work provide important inspiration for the synthesis of diversified 1D metallic nanostructures with distinctly enhanced catalytic performance and beyond.
研究领域:
材料科学
·
电化学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Applied Nanoscience
·
2020
·Vol. 10
·期 6
·1845-1851
·
IF 2.88
Wang Tianxiong,Jiang Tiancai,Meng Xianquan
We found that the morphology of nanowires could be regulated by adding polyvinylpyrrolidone (PVP, K30) in hydrothermal synthesis of antimony sulfide (Sb 2 S 3 ) nanowires. The nanowires with length more than 20 μm were obtained by adding the proper amount of PVP. Three kinds of fully nanostructured photodetector using Sb 2 S 3 nanowires as active regions were fabricated and the first detector used silver nanowires as the electrodes at both ends, the second used silver nanowires as one electrode and MXenes as the another electrode, and the third used MXenes as both electrodes. The light response speed of the photodetector with both MXenes electrodes was improved greatly. The photodetector which used MXenes and silver nanowires as electrodes at two ends, respectively, showed the phenomenon of being self-driven. The mechanism of asymmetric hole migration was put forward to explain the effect of being self-driven.
研究领域:
材料科学
·
纳米技术
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Dihua Huang,Yiming Zhu,Binglong Mao,Jun Zhang,Quanxing Liu,Xiang Li,Kexing Song
Felicitously incorporating noble metals with some transition metals to fabricate composite nanoagents with diverse shape and microarchitecture is a more promising solution for obtaining highly effective and cost-cutting catalyst. Herein, we report a facile and flexible synthesizing tactics, or Galvani substitution modulated self-assembly protocol, to fabricate Cu nanowire (core)-Pt nanoparticle (shell) unique microarchitecture (Cu-NWs@Pt) with porously hiberarchy. The comprehensive characterizations reveal that as-fabricated bimetallic nanowires with average aspect ratio of ca. 80 and apparent diameter of ca 60 nm, hold the razor-thin Cu–Pt alloy sublayer in the metallic contact interface, with the prebuilt Cu nanowires cladded by orderly oriented Pt nanograins to form loose, porous and stratiform structure. The thickness and microarchitecture of the Pt shell could be duly regulated by adjusting dosage of the metal precursors and substituting time. The verified formation of electronic synergic effect in the bimetallic nanoagents avails the adsorption of H to form metal-H species, leading to enhance the catalytic activity . Their catalytic ability overall increases with rising of Pt/Cu molar ratios , of which the Cu 0.6 Pt 0.4 even exceeds Pt-NPs, with a turnover frequency of 77.26·min −1 and apparent activation energy of 30.25 kJ·mol −1 , and maintaining 89% of the incipient catalytic ability after 5 recycling runs.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2020
·Vol. 22
·期 36
·6019-6025
·
IF 3.117
Junli Wang,Fan Guan,Lijun Zhao,Longhua Li,Junhao Zhang,Tingting Wang
Composition engineering is an active topic of research for optical and electronic (nano)crystals and functional materials. We here demonstrate the control over the ratios and distributions of selenium and sulfur in ternary Sb2(Se,S)3 alloy nanorods (NRs), which were synthesized from a molecular chalcogen precursor, selenium disulfide (SeS2). By increasing the anion/cation precursor ratios (SeS2/SbCl3) from 0.5 : 1 to 1 : 1 and 1.5 : 1, an increase in both the Se fractions and the lengths × diameters of NRs is achieved with the Se and S distributions in Sb2(Se,S)3 varying from homogeneity to inhomogeneity. Within the inhomogeneous NRs obtained at high SeS2/SbCl3 ratios containing excessive chalcogen (Se + S), S decreases but Se increases from the center to the periphery as revealed by EDS elemental analyses performed on individual NRs. In particular, the 1D growth anisotropy of NRs allows for a large chalcogen concentration gradient along the axial direction of the resulting NRs from their middle to the two ends. Such non-uniform Se and S distributions can be rationally interpreted by analyzing the growth kinetics and processes of Sb2(Se,S)3 NRs and would give rise to uncommon (opto)electronic properties towards future nanowire-based devices.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）