Inorganic Chemistry Frontiers
·
2018
·Vol. 5
·期 5
·1126-1132
·
IF 5.106
Congjie Lv,Yi Peng,Jing Yang,Xiaochuan Duan,Jianmin Ma,Taihong Wang
Nb-Doped LiNi0.4Co0.2Mn0.4O2 (Nb-NCM) nanobelts have been successfully fabricated for the first time through a facile electrospinning method by the delicate control of PAN pyrolysis and Nb-NCM formation (including nucleation and subsequent growth processes). According to the experimental evidence from temperature-dependent characterization and isolation of the intermediates, the formation of nanobelts undergoes a morphology evolution from nanofibres to nanotubes, and finally to the nanobelts composed of subunit nanoparticles. When used as a cathode for lithium-ion batteries, the as-electrospun Nb-NCM nanobelts exhibit superior electrochemical performances, which could be attributed to their unique features, such as their 1D nanostructure, well-crystallized nature and Nb-doping. These features can improve the ionic conductivity of Nb-NCM nanobelts and stabilize the electrode/electrolyte interface. Therefore, the 1D Nb-NCM nanobelts developed in this study not only provide an excellent model to investigate the fabrication of multi-element oxides using the electrospinning method, but also open up a facile route for designing 1D layered cathodes with a complex component for high performance lithium-ion batteries.
研究领域:
材料科学
·
纳米技术
·
电化学
·
能源存储
·
无机合成
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2014
·Vol. 14
·期 5
·3653-3657
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IF 1.339
Liu Juan,Li Wei,Zhu Linghui,Li Chao,Qu Fengdong,Guo Wenbin,Feng Caihui,Ruan Shengping
In this paper, In2O3 nanotubes were prepared by an electrospinning method combined with an oriented-contract calcinations scheme, and characterized by differential thermal and thermal gravimetric analyzer (DTA-TGA), X-ray diffraction (XRD), and scanning electron
microscopy (SEM). Ethanol sensing properties of the as-prepared nanotubes were investigated. The results showed that the In2O3 nanotubes were obtained at a fast heating rate of 100 °C/min. Ethanol sensing properties indicated that the nanotubes exhibit a high response
of 87.5 to 500 ppm ethanol, fast response (20 s) and recovery (18 s) rate at the optimal operating temperature of 260 °C. Moreover, the nanotubes also exhibit good selectivity.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Dong Liu,Rundong Wu,Xianjie Wang,Runping Ye,Feiyang Hu,Xiaohan Chen,Tongtong Wang,Bingying Han,Zhang-Hui Lu,Gang Feng,Rongbin Zhang
It is crucial to eliminate CO emissions using non-noble catalysts. Cu-based catalysts have been widely applied in CO oxidation, but their activity and stability at low temperatures are still challenging. This study reports the preparation and application of an efficient copper-doped ceria electrospun fiber catalyst prepared by a facile electrospinning method. The obtained 10Cu–Ce fiber catalyst achieved complete CO oxidation at a temperature as low as 90 °C. However, a reference 10Cu/Ce catalyst prepared by the impregnation method needed 110 °C to achieve complete CO oxidation under identical reaction conditions. Asymmetric oxygen vacancies (ASOV) at the interface between copper and cerium were constructed, to effectively absorb gas molecules involved in the reaction, leading to the enhanced oxidation of CO. The exceptional ability of the 10Cu–Ce catalyst to adsorb CO is attributed to its unique structure and surface interaction phase Cu+-Ov-Ce3+, as demonstrated by a series of characterizations and DFT calculations. This novel approach of using electrospinning offers a promising technique for developing low-temperature and non-noble metal-based catalysts.
研究领域:
催化化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2021
·
IF 7.664
Wenjing Ji,Guojie Zhao,Cong Guo,Li Fan,Hua Deng,Rongni Du,Mi Fu,Guopeng Sui,Qiang Fu
Two-dimensional (2D) nanomaterials have been widely used as advanced functional materials due to their special nanostructures and various functionalities. Researchers working on 2D nanomaterials are facing several problems, the difficulties in synthesis, scarcity of species, largely unclear formation mechanism and non-universal preparation method. Herein, this paper reports a new method based on electrospinning to fabricate 2D inorganic materials (titanium dioxide) with thickness around 20 nm and width/thickness ratio of >50. These 2D nanobelts TiO 2 could enhance the dielectric performance of PVDF based composites much more significantly, and the energy density of 12.45 J/cm 3 could be easily achieved with a small volume fraction (3 vol%) of the nanobelts. Such method has many advantages such as safe production, low production cost, and continuous production. More importantly, this approach is potential to become a universal method to fabricate a range of 2D inorganic nanomaterials in the future due to its universality.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2013
·Vol. 13
·期 3
·1983-1987
·
IF 1.149
Zhu Yajun,Zhang Xuebin,Ji Yi,Feng Yi,Zhang Jingcheng
This paper describes a procedure of synthesizing long WS2 nanofibers. WO3 nanofibers were prepared as precursors by electrospinning of ammonium meta-tungstate (AMT), polyvinyl alcohol (PVA) and alcohol solution followed by calcination at 550 °C in air. WS2
nanofibers were obtained by sulfurization of the WO3 nanofibres at 800 °C in an argon atmosphere, with sulfur powder acting as sulfuration reducer. The nanofibres were characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron
microscopy (SEM), energy dispersive X-ray (EDX), and transmission electron microscopy (TEM). The results show that the final products are pure WS2 nanofibres, which have high aspect ratio. The WS2 nanofibers with rough surface were formed of nanoparticles, while some
nanoflakes appeared on the surface of WS2 nanofibres. The diameters of the WS2 nanofibers were between 200 and 300 nm, which is similar to WO3 nanofibers. In addition, the WS2 nanofibers were polycrystalline.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Jiayun Guo,Shuyi Ma,Gege Fan,Ping Ni,Nina Ma,Yinyue Wang,Jiamin Zhu,Heng Wang
In this paper, NdFeO 3 nanofibers were synthesized by the electrospinning method for the first time and used for the detection of triethylamine. XRD, SEM, TEM, BET, XPS, and gas-sensitive test instruments were used to detect the morphology, structure, and gas-sensitive properties of the synthesized products. The results show that the average diameter of the nanorods is about 275 nm. The specific surface area is 10.298 m 2 /g, the total pore volume is 0.112 cm 3 /g, and the average pore diameter is 43.469 nm. Gas sensing tests were carried out on NdFeO 3 nanofibers. The gas-sensitized element was found to have a low optimal operating temperature of 190 °C. The response to 100 ppm triethylamine was 18.9. The response time and recovery time were 72 and 35 s, respectively. A series of test results showed that the sample had excellent selectivity, reproducible detection, long-term stability, and a low detection limit for triethylamine. It has a lot of potential for practical TEA monitoring and detection.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2024
·
IF 5.5
Bo Wang,Zhenxing Wang,Yu Wan,Yimu Wang,Shuang Gao,Yan Chen,Qingsong Luo,Changhao Feng
Background Developing high-performance n -butanol gas sensors is of great significance for environmental protection and human health. The Bi-doped ZnFe 2 O 4 nanofibers exhibit promising potential as a viable option for n- butanol sensors. Methods In this study, a series of high response and fast response n -butanol gas sensors were successfully fabricated by Bi-doped ZnFe 2 O 4 nanofibers with different atomic percentages (0 %, 1 %, 3 %, 5 %), which were synthesized by a facile electrospinning method. Significant findings The nanofibers with a Bi/Zn molar ratio of 3 % showed a response value of 23.6 to 100 ppm n -butanol at 175 °C, which was 2.4 times higher than that of the pure ZnFe 2 O 4 nanofibers, and with a lower concentration detection limit (1.5 for 100 ppb n -butanol). In addition, the gas sensing materials had a good selectivity and long-term stability to n -butanol, and the mechanism of the good sensing performance of Bi doped ZnFe 2 O 4 nanofibers for n -butanol is also analyzed in this paper.
研究领域:
材料科学
·
环境科学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
IONICS
·
2022
·Vol. 28
·期 3
·1157-1166
·
IF 2.961
Jin Zhengfei,Ma Xiangyu,Qiu Linlin,Liu Yang,Yuan Yongfeng,Song Lixin,Du Pingfan,Xiong Jie
Compared to conventional lithium batteries, lithium-sulfur (Li–S) batteries are not only low-cost and environmentally friendly but also have a high theoretical energy density. However, the insulating nature of sulfur materials and the poor cycle stability of Li–S batteries inhibit their commercialization. Herein, porous carbon nanofibers (PCNFs) were fabricated by a facile electrospinning method and used as a cathode hosting sulfur for Li–S batteries. The porous structure effectively restrained soluble polysulfides from migrating due to shuttle effect of lithium-sulfur batteries. With the PCNFs as the sulfur host, the PCNFs/S cathode exhibited excellent cycling stability. An initial specific capacity of 835 mAh g −1 at 0.1C and a reversible capacity of 98.6% after 100 cycles were achieved. This outstanding performance can be ascribed to the rational design of the electrode structure, which can increase the interfacial contact and provide a large number of electrochemically active sites for polysulfide storage.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Chunyong Zhang,Lei Su,Linna Huang,Jiehong Cheng,Jianning Li,Hengfei Qin
The carbon nanofiber composite containing Cu and MnO was fabricated by electrospinning method. The precursor solution was prepared by mixing Cupric Acetate Monohydrate, Manganous acetate, N,N-dimethylformamide (DMF) and polyacrylonitrile in a certain proportion. Then the material of Cu- MnO/CNF with higher capacitance was prepared by electrostatic spinning at 15 kV and high temperature heat treatment. The Cu-MnO/CNF was characterized by scanning electron microscopy (SEM) and X-Ray diffraction (XRD). It’s clear from the results that, carbon nanofiber had overlaped by metal oxides and metals, at the same time, the Cu(OAc) 2 was converted to Cu and the MnACAC was turned into MnO after thermal treatment. Through a series of electrochemical tests, it showed the Cu-MnO/CNF has excellent electrochemical performance and indicated its potential advantages for supercapacitors. The results indicated the specific capacitance of the Cu-MnO/CNF displayed a larger specific capacitance of 581 F/g than the electrical capacity of Cu-CuO/CNF and MnO-Mn(OH) 2 /CNF
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2015
·Vol. 40
·期 2
·1756-1764
·
IF 3.086
Jiuyu Liu,Xin Li,Xiang Chen,Hao Niu,Xiao Han,Ting Zhang,Huiming Lin,Fengyu Qu
SnO2/In2O3 hetero-nanotubes (SINs) were successfully produced using a novel coaxial-electrospinning method with pure polyvinylpyrrolidone (PVP) plus Sn/In salt as the outer shell and PVP as the inner component. After the calcination process, these SnO2/In2O3 hetero-nanotubes with diameters of 80–120 nm and lengths of several micrometers were obtained. All the SINs are assembled by plenty of nanoparticles (10–50 nm), bringing about abundant porous structures as well as large surface areas (up to 56 m2 g−1). These SnO2/In2O3 hetero-nanotubes exhibit high response (400 at 500 ppm), low detection limit (down to 250 ppb), fast response (60 s)/recovery (97 s), good retention (94.68% for 30 day) and excellent selectivity toward formaldehyde. Gas sensing mechanism has been discussed by adjusting the amount of the two components. Based on detail investigations, it can be concluded that the enhanced response performance lies in the particle size, porous structure, surface area, and component ratio of the heterostructure.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Science of Advanced Materials
·
2015
·Vol. 7
·期 3
·526-531
·
IF 2.598
Chen Xiang,Gao Qian,Xiang Di,Lin Huiming,Han Xiao,Li Xin,Du Shantao,Qu Fengyu
Porous ZnO nanofibers were prepared through the electrospun method using zinc acetate as zinc source and polyvinylpyrrolidone as thickener agent. Under adjusting the amount of zinc acetate, the synthesized porous ZnO nanofibers show various structures (fiber, tube, and fiber-in-tube).
And the formation mechanism was discussed in detail. These porous ZnO samples show the uniform structure about 200 to 300 nm in diameter and several microns in length. All the fibers are composed of many ZnO nanoparticles (20–30 nm) that assemble to form the porous structure and induce
the large surface area and high pore volume of the sample. These porous ZnO nanofibers were configured as high performance sensors for acetone sensing, showing high sensitivity (S = 243.3 at 500 ppm), low detection limit (10 ppm), fast response/ recovery (7/17 s), and very good selectivity.
研究领域:
材料科学
·
传感器技术
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xifei Yin,Yinghui Sun,Yanbin Zhang,Xiaolong Wang,Ying Li,Tong Xu,Jie Bai
Dry reforming of methane (DRM) is a chemical reaction with great potential to convert CH 4 and CO 2 into valuable syngas. However, catalyst deactivation due to sintering and coking is a major obstacle for practical applications. Here, we synthesized a hollow tubular Ni/La 2 O 3 -ES catalyst via electrospinning (ES) method that surpasses conventional Ni/La 2 O 3 catalysts in both activity and stability. The ES-driven architecture creates confinement-stabilized Ni nanoparticles with improved metal-support interaction and spatial uniformity, achieving 93 % CO 2 conversion and 85.0 % CH 4 conversion at 800 °C for 20 h of continuous operation, providing long-lasting performance with no accumulation of carbon deposition. The carbon removal ability is strengthened in the Ni/La 2 O 3 -ES catalyst as evidenced by the CH 4 -CO 2 -TPSR experiments. Ni/La 2 O 3 -ES catalyst prefer to produce more active intermediates b-HCOO* as indicated in in situ DRIFTS spectra. The b-HCOO* species served as the key reactive intermediate that facilitated both CO 2 activation and the oxidative transformation of CH 4 -derived carbonaceous intermediates on catalytic surface. Additionally, the catalyst prepared by electrospinning method promoted lattice oxygen release and oxygen vacancy formation, thereby exhibiting superior catalytic activity and stability.
研究领域:
催化化学
·
能源化学
·
材料科学
·
表面科学
·
化学工程
✓ 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）