|
51
|
Guo R, Jiao T, Xing R, Chen Y, Guo W, Zhou J, Zhang L, Peng Q. Hierarchical AuNPs-Loaded Fe₃O₄/Polymers Nanocomposites Constructed by Electrospinning with Enhanced and Magnetically Recyclable Catalytic Capacities. NANOMATERIALS (BASEL, SWITZERLAND) 2017; 7:E317. [PMID: 29023427 PMCID: PMC5666482 DOI: 10.3390/nano7100317] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 10/10/2017] [Accepted: 10/10/2017] [Indexed: 02/07/2023]
Abstract
Gold nanoparticles (AuNPs) have attracted widespread attention for their excellent catalytic activity, as well as their unusual physical and chemical properties. The main challenges come from the agglomeration and time-consuming separation of gold nanoparticles, which have greatly baffled the development and application in liquid phase selective reduction. To solve these problems, we propose the preparation of polyvinyl alcohol(PVA)/poly(acrylic acid)(PAA)/Fe₃O₄ nanocomposites with loaded AuNPs. The obtained PVA/PAA/Fe₃O₄ composite membrane by electrospinning demonstrated high structural stability, a large specific surface area, and more active sites, which is conducive to promoting good dispersion of AuNPs on membrane surfaces. The subsequently prepared PVA/PAA/Fe₃O₄@AuNPs nanocomposites exhibited satisfactory nanostructures, robust thermal stability, and a favorable magnetic response for recycling. In addition, the PVA/PAA/Fe₃O₄@AuNPs nanocomposites showed a remarkable catalytic capacity in the catalytic reduction of p-nitrophenol and 2-nitroaniline solutions. In addition, the regeneration studies toward p-nitrophenol for different consecutive cycles demonstrate that the as-prepared PVA/PAA/Fe₃O₄@AuNPs nanocomposites have outstanding stability and recycling in catalytic reduction.
Collapse
Affiliation(s)
- Rong Guo
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Tifeng Jiao
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Ruirui Xing
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
| | - Yan Chen
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Wanchun Guo
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Jingxin Zhou
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Lexin Zhang
- Hebei Key Laboratory of Applied Chemistry, School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao 066004, China.
| | - Qiuming Peng
- State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China.
| |
Collapse
|
|
52
|
Deivasegamani R, Karunanidhi G, Santhosh C, Gopal T, Saravana achari D, Neogi A, Nivetha R, Pradeep N, Venkatraman U, Bhatnagar A, Jeong SK, Grace AN. Chemoresistive sensor for hydrogen using thin films of tin dioxide doped with cerium and palladium. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2514-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
|
53
|
Overhead projector sheets as substrate for deposition of one-dimensional tin dioxide nanostructures for use as a chemoresistive sensor for hydrogen. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2329-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
|
54
|
Zhu S, Liu X, Zhuang J, Zhao L. A Fast Room Temperature NH₃ Sensor Based on an Al/p-Si/Al Structure with Schottky Electrodes. SENSORS 2017; 17:s17081929. [PMID: 28829383 PMCID: PMC5580232 DOI: 10.3390/s17081929] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 08/18/2017] [Accepted: 08/19/2017] [Indexed: 11/26/2022]
Abstract
In this paper, an electrical-based NH3 sensor with an Al/p-Si/Al structure is reported. The p-Si substrate is microstructured by fs-laser irradiation and then etched with 30% alkaline solution. This sensor works well at room temperature with fast response/recovery for NH3 gas at 5–100 ppm concentration. However, when the sensor is annealed in N2/H2 forming gas or short-circuited for Al/Si electrodes, its sensitivity decreases drastically and almost vanishes. Further I-V and FT-IR results show that the two back-to-back Schottky diodes on the device play a key role in its sensing performance.
Collapse
Affiliation(s)
- Suwan Zhu
- Collaborative Innovation Center of Advanced Microstructures, State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
| | - Xiaolong Liu
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center and Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China.
| | - Jun Zhuang
- Shanghai Ultra-Precision Optical Manufacturing Engineering Center and Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China.
| | - Li Zhao
- Collaborative Innovation Center of Advanced Microstructures, State Key Laboratory of Surface Physics and Department of Physics, Fudan University, Shanghai 200433, China.
| |
Collapse
|
|
55
|
Felix S, Kollu P, Grace AN. Electrochemical performance of Ag–CuO nanocomposites towards glucose sensing. ACTA ACUST UNITED AC 2017. [DOI: 10.1080/14328917.2017.1358507] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
| | - Pratap Kollu
- CASEST, School of Physics, University of Hyderabad, Hyderabad, India
- Newton Alumnus Researcher – The Royal Society London, Thin Film Magnetism group, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | | |
Collapse
|
|
56
|
Yadav AA, Lokhande VC, Bulakhe RN, Lokhande CD. Amperometric CO2 gas sensor based on interconnected web-like nanoparticles of La2O3 synthesized by ultrasonic spray pyrolysis. Mikrochim Acta 2017. [DOI: 10.1007/s00604-017-2364-3] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
|
58
|
Shukla S, Kushwaha CS, Singh N. Recent developments in conducting polymer based composites for sensing devices. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.matpr.2017.06.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
|
59
|
Li Q, Lv S, Lu M, Lin Z, Tang D. Potentiometric competitive immunoassay for determination of aflatoxin B1 in food by using antibody-labeled gold nanoparticles. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-1929-x] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
|