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Li H, Liu X, Huang J, Zhu W, Ding A, Yao C, Zhu J. Biotemplated Fabrication of ZnO Microstructures with Enhanced Photocatalytic Properties from Rape Pollen. CRYSTALLOGR REP+ 2022. [DOI: 10.1134/s1063774522070082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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2
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Zhang W, Li C, Tian Z, Hou Z. Structural, photocatalytic and photoelectrochemical properties of porous ZnO nanosheets prepared by air cold plasma. NANOTECHNOLOGY 2021; 32:505712. [PMID: 34517356 DOI: 10.1088/1361-6528/ac2650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/12/2021] [Indexed: 06/13/2023]
Abstract
Porous ZnO nanosheets with different thickness were prepared on zinc substrate by air cold plasma for photocatalytic degradation and photoelectrochemical water splitting. The ZnO nanosheets consisted of nanocrystallines with high-density oxygen-related defects characterized by the strong red luminescence. The UV absorption tended to be saturated as the thickness increased, and the saturation occurred at a thickness of about 2.3μm. Under UV irradiation (365 nm), the 2.3μm thick sample with higher content of oxygen vacancies and oxygen interstitials showed the highest photocatalytic activity (and higher than P25 TiO2) in degradation of gaseous ethyl acetate. Due to the excellent UV-vis absorption ability and the effective transfer of photogenerated carriers, the ZnO nanosheets with thickness of 3.3μm showed a photocurrent density as high as 0.22 mA cm-2at -0.28 V (versus Ag/AgCl) under AM 1.5 G 100 mW cm-2.
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Affiliation(s)
- Wei Zhang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Changlin Li
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Zunyi Tian
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Zhongyu Hou
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication, Department of Micro/Nano Electronics, School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
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3
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ZIF-8 derived hollow CuO/ZnO material for study of enhanced photocatalytic performance. Colloids Surf A Physicochem Eng Asp 2019. [DOI: 10.1016/j.colsurfa.2019.01.072] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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4
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Xie H, Ding F, Mu H. Effects of Au nanoparticles and ZnO morphology on the photocatalytic performance of Au doped ZnO/TiO 2 films. NANOTECHNOLOGY 2019; 30:085708. [PMID: 30523942 DOI: 10.1088/1361-6528/aaf197] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Au doped ZnO nanocomposite films on TiO2 seeding layer (AuZ/T) were fabricated by hydrothermal processing and their photocatalytic performance was investigated. It could be found that the AuZ/T with micrometer(μm)-sized, lying ZnO bulks revealed optimal photocatalytic performance toward methyl orange under simulated sunlight, whose apparent degradation rate constant K app of 1.31 was about 20% higher compared to that of ZnO/TiO2 and 3 times higher compared to that of ZnO. The Au nanoparticles, TiO2 seeding layer and hydrothermal processing time imposed vital influence on the morphology of ZnO nanostructures, which played key roles in the formation of ZnO/TiO2 heterojunction and charge transfer (CT) inside it, as demonstrated by kinetics of transient photoluminescence (PL) decaying. The incorporation of Au nanoparticles not only induced the variations of ZnO crystallinity and reduction of ZnO band gap (E g), but also generated the Schottky heterojunction of metal-semiconductor, which would be beneficial to the CT inside nanocomposite films and separation of photo-generated electron-hole pairs, as verified by the remarkable PL suppression. The mechanism responsible for photocatalysis enhancement, which was resulted from the hybrid effects of Au nanoparticles and the ZnO morphology was discussed in details.
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Affiliation(s)
- Haifen Xie
- Department of Physics, School of Science, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, People's Republic of China
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5
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Peng SY, Yang L, Yu L, Li XY, Zhou YZ, Lv Y, Zhu F. Well-defined Pd anchoring on the surface of porous ZnO nanocomposites with excellent photocatalytic activity and good reusability for the removal of phenol from water. NEW J CHEM 2019. [DOI: 10.1039/c9nj04127c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Well-defined Pd/ZnO nanocomposites prepared by modifying ZnO nanosheets with Pd nanoparticles exhibit excellent photocatalytic activity and good reusability for the removal of phenol from water.
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Affiliation(s)
- Si-Yan Peng
- School of Chemistry and Environmental Science
- Shangrao Normal University
- Shangrao
- P. R. China
- State Key Laboratory of Structural Chemistry
| | - Liusai Yang
- School of Chemistry and Environmental Science
- Shangrao Normal University
- Shangrao
- P. R. China
| | - Leshu Yu
- School of Chemistry and Environmental Science
- Shangrao Normal University
- Shangrao
- P. R. China
| | - Xiao-Yun Li
- School of Chemistry and Environmental Science
- Shangrao Normal University
- Shangrao
- P. R. China
| | - Yuan-Zhen Zhou
- School of Chemistry and Environmental Science
- Shangrao Normal University
- Shangrao
- P. R. China
| | - Yingying Lv
- School of Chemistry and Environmental Science
- Shangrao Normal University
- Shangrao
- P. R. China
| | - Feng Zhu
- School of Chemistry and Environmental Science
- Shangrao Normal University
- Shangrao
- P. R. China
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Tan CF, Su Su Zin AK, Chen Z, Liow CH, Phan HT, Tan HR, Xu QH, Ho GW. Inverse Stellation of CuAu-ZnO Multimetallic-Semiconductor Nanostartube for Plasmon-Enhanced Photocatalysis. ACS NANO 2018; 12:4512-4520. [PMID: 29697959 DOI: 10.1021/acsnano.8b00770] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
One-dimensional (1D) metallic nanocrystals constitute an important class of plasmonic materials for localization of light into subwavelength dimensions. Coupled with their intrinsic conductive properties and extended optical paths for light absorption, metallic nanowires are prevalent in light-harnessing applications. However, the transverse surface plasmon resonance (SPR) mode of traditional multiply twinned nanowires often suffers from weaker electric field enhancement due to its low degree of morphological curvature in comparison to other complex anisotropic nanocrystals. Herein, simultaneous anisotropic stellation and excavation of multiply twinned nanowires are demonstrated through a site-selective galvanic reaction for a pronounced manipulation of light-matter interaction. The introduction of longitudinal extrusions and cavitation along the nanowires leads to a significant enhancement in plasmon field with reduced quenching of localized surface plasmon resonance (LSPR). The as-synthesized multimetallic nanostartubes serve as a panchromatic plasmonic framework for incorporation of photocatalytic materials for plasmon-assisted solar fuel production.
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Affiliation(s)
- Chuan Fu Tan
- Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583
- NUS Graduate School for Integrative Sciences and Engineering , National University of Singapore, Centre for Life Sciences , #05-01, 28 Medical Drive , Singapore 117456
| | - Aung Kyi Su Su Zin
- Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583
| | - Zhihui Chen
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543
| | - Chi Hao Liow
- Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583
| | - Huy Thong Phan
- Engineering Science Programme , National University of Singapore , 9 Engineering Drive 1 , Singapore 117575
| | - Hui Ru Tan
- Institute of Materials Research and Engineering , A*STAR (Agency for Science, Technology and Research) , 3 Research Link , Singapore 117602
| | - Qing-Hua Xu
- Department of Chemistry , National University of Singapore , 3 Science Drive 3 , Singapore 117543
| | - Ghim Wei Ho
- Department of Electrical and Computer Engineering , National University of Singapore , 4 Engineering Drive 3 , Singapore 117583
- Engineering Science Programme , National University of Singapore , 9 Engineering Drive 1 , Singapore 117575
- Institute of Materials Research and Engineering , A*STAR (Agency for Science, Technology and Research) , 3 Research Link , Singapore 117602
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Zhang W, Zhang L, Gao H, Yang W, Wang S, Xing L, Xue X. Self-Powered Implantable Skin-Like Glucometer for Real-Time Detection of Blood Glucose Level In Vivo. NANO-MICRO LETTERS 2018; 10:32. [PMID: 30393681 PMCID: PMC6199078 DOI: 10.1007/s40820-017-0185-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2017] [Accepted: 12/16/2017] [Indexed: 05/02/2023]
Abstract
Implantable bioelectronics for analyzing physiological biomarkers has recently been recognized as a promising technique in medical treatment or diagnostics. In this study, we developed a self-powered implantable skin-like glucometer for real-time detection of blood glucose level in vivo. Based on the piezo-enzymatic-reaction coupling effect of GOx@ZnO nanowire, the device under an applied deformation can actively output piezoelectric signal containing the glucose-detecting information. No external electricity power source or battery is needed for this device, and the outputting piezoelectric voltage acts as both the biosensing signal and electricity power. A practical application of the skin-like glucometer implanted in mouse body for detecting blood glucose level has been simply demonstrated. These results provide a new technique path for diabetes prophylaxis and treatment.
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Affiliation(s)
- Wanglinhan Zhang
- College of Sciences, Northeastern University, Shenyang, 110004, People's Republic of China
| | - Linlin Zhang
- College of Sciences, Northeastern University, Shenyang, 110004, People's Republic of China
| | - Huiling Gao
- College of Life and Health Sciences, Northeastern University, Shenyang, 110004, People's Republic of China
| | - Wenyan Yang
- College of Sciences, Northeastern University, Shenyang, 110004, People's Republic of China
| | - Shuai Wang
- College of Sciences, Northeastern University, Shenyang, 110004, People's Republic of China.
| | - Lili Xing
- College of Sciences, Northeastern University, Shenyang, 110004, People's Republic of China
| | - Xinyu Xue
- College of Sciences, Northeastern University, Shenyang, 110004, People's Republic of China.
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8
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Han W, He H, Zhang L, Dong C, Zeng H, Dai Y, Xing L, Zhang Y, Xue X. A Self-Powered Wearable Noninvasive Electronic-Skin for Perspiration Analysis Based on Piezo-Biosensing Unit Matrix of Enzyme/ZnO Nanoarrays. ACS APPLIED MATERIALS & INTERFACES 2017; 9:29526-29537. [PMID: 28782353 DOI: 10.1021/acsami.7b07990] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The emerging multifunctional flexible electronic-skin for establishing body-electric interaction can enable real-time monitoring of personal health status as a new personalized medicine technique. A key difficulty in the device design is the flexible power supply. Here a self-powered wearable noninvasive electronic-skin for perspiration analysis has been realized on the basis of a piezo-biosensing unit matrix of enzyme/ZnO nanoarrays. The electronic-skin can detect lactate, glucose, uric acid, and urea in the perspiration, and no outside electrical power supply or battery is used in the biosensing process. The piezoelectric impulse of the piezo-biosensing units serves as the power supply and the data biosensor. The working mechanism can be ascribed to the piezoelectric-enzymatic-reaction coupling effect of enzyme/ZnO nanowires. The electronic-skin can real-time/continuously monitor the physiological state of a runner through analyzing the perspiration on his skin. This approach can promote the development of a new-type of body electric and self-powered biosensing electronic-skin.
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Affiliation(s)
- Wuxiao Han
- College of Sciences, Northeastern University , Shenyang 110004, China
| | - Haoxuan He
- College of Sciences, Northeastern University , Shenyang 110004, China
| | - Linlin Zhang
- College of Sciences, Northeastern University , Shenyang 110004, China
| | - Chuanyi Dong
- College of Sciences, Northeastern University , Shenyang 110004, China
| | - Hui Zeng
- College of Sciences, Northeastern University , Shenyang 110004, China
| | - Yitong Dai
- College of Sciences, Northeastern University , Shenyang 110004, China
| | - Lili Xing
- College of Sciences, Northeastern University , Shenyang 110004, China
| | - Yan Zhang
- School of Physical Electronics, University of Electronic Science and Technology of China , Chengdu 610054, China
| | - Xinyu Xue
- College of Sciences, Northeastern University , Shenyang 110004, China
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9
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Ahmed I, Fakharuddin A, Wali Q, Bin Zainun AR, Ismail J, Jose R. Mesoporous titania-vertical nanorod films with interfacial engineering for high performance dye-sensitized solar cells. NANOTECHNOLOGY 2015; 26:105401. [PMID: 25687409 DOI: 10.1088/0957-4484/26/10/105401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Working electrode (WE) fabrication offers significant challenges in terms of achieving high-efficiency dye-sensitized solar cells (DSCs). We have combined the beneficial effects of vertical nanorods grown on conducting glass substrate for charge transport and mesoporous particles for dye loading and have achieved a high photoconversion efficiency of (η) > 11% with an internal quantum efficiency of ∼93% in electrode films of thickness ∼7 ± 0.5 μm. Controlling the interface between the vertical nanorods and the mesoporous film is a crucial step in attaining high η. We identify three parameters, viz., large surface area of nanoparticles, increased light scattering of the nanorod-nanoparticle layer, and superior charge transport of nanorods, that simultaneously contribute to the improved photovoltaic performance of the WE developed.
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Affiliation(s)
- Irfan Ahmed
- Nanostructured Renewable Energy Materials Laboratory, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang, 26300, Malaysia
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Zhao YL, Yao DS, Song CB, Zhu L, Song J, Gu XQ, Qiang YH. CNT–G–TiO2 layer as a bridge linking TiO2 nanotube arrays and substrates for efficient dye-sensitized solar cells. RSC Adv 2015. [DOI: 10.1039/c5ra01085c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This study incorporated a 3-D hybrid material comprising graphene and carbon nanotubes (CNTs) into a TiO2 composite paste to adhere TiO2 nanotube arrays (NTAs) as photoanodes.
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Affiliation(s)
- Y. L. Zhao
- School of Materials Science and Engineering
- China University of Mining and Technology
- Xuzhou 221116
- China
| | - D. S. Yao
- School of Materials Science and Engineering
- China University of Mining and Technology
- Xuzhou 221116
- China
| | - C. B. Song
- School of Materials Science and Engineering
- China University of Mining and Technology
- Xuzhou 221116
- China
| | - L. Zhu
- School of Materials Science and Engineering
- China University of Mining and Technology
- Xuzhou 221116
- China
| | - J. Song
- School of Materials Science and Engineering
- China University of Mining and Technology
- Xuzhou 221116
- China
| | - X. Q. Gu
- School of Materials Science and Engineering
- China University of Mining and Technology
- Xuzhou 221116
- China
| | - Y. H. Qiang
- School of Materials Science and Engineering
- China University of Mining and Technology
- Xuzhou 221116
- China
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Yao C, Xie A, Shen Y, Zhu W, Zhu J. Graphene oxide used as a surfactant to induce the flower-like ZnO microstructures: growth mechanism and enhanced photocatalytic properties. CRYSTAL RESEARCH AND TECHNOLOGY 2014. [DOI: 10.1002/crat.201400300] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chengli Yao
- School of Chemistry and Chemical Engineering; Anhui University; Anhui 230039 China
- School of Chemistry and Chemical Engineering; Hefei Normal University; Anhui 230601 China
| | - Anjian Xie
- School of Chemistry and Chemical Engineering; Anhui University; Anhui 230039 China
| | - Yuhua Shen
- School of Chemistry and Chemical Engineering; Anhui University; Anhui 230039 China
| | - Weina Zhu
- School of Chemistry and Chemical Engineering; Anhui University; Anhui 230039 China
| | - Jinmiao Zhu
- School of Chemistry and Chemical Engineering; Hefei Normal University; Anhui 230601 China
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Shabannia R, Abu Hassan H, Mahmodi H, Naderi N, Abd HR. ZnO nanorod ultraviolet photodetector on porous silicon substrate. SEMICONDUCTOR SCIENCE AND TECHNOLOGY 2013; 28:115007. [DOI: 10.1088/0268-1242/28/11/115007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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13
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Mali SS, Kim H, Patil PS, Hong CK. Chemically grown vertically aligned 1D ZnO nanorods with CdS coating for efficient quantum dot sensitized solar cells (QDSSC): a controlled synthesis route. Dalton Trans 2013; 42:16961-7. [DOI: 10.1039/c3dt51287h] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Chang WC, Lee CH, Yu WC, Lin CM. Optimization of dye adsorption time and film thickness for efficient ZnO dye-sensitized solar cells with high at-rest stability. NANOSCALE RESEARCH LETTERS 2012; 7:688. [PMID: 23272760 PMCID: PMC3552832 DOI: 10.1186/1556-276x-7-688] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2012] [Accepted: 12/12/2012] [Indexed: 06/01/2023]
Abstract
Photoelectrodes for dye-sensitized solar cells were fabricated using commercially available zinc oxide (ZnO) nanoparticles and sensitized with the dye N719. This study systematically investigates the effects of two fabrication factors: the ZnO film thickness and the dye adsorption time. Results show that these two fabrication factors must be optimized simultaneously to obtain efficient ZnO/N719-based cells. Different film thicknesses require different dye adsorption times for optimal cell performance. This is because a prolonged dye adsorption time leads to a significant deterioration in cell performance. This is contrary to what is normally observed for titanium dioxide-based cells. The highest overall power conversion efficiency obtained in this study was 5.61%, which was achieved by 26-μm-thick photoelectrodes sensitized in a dye solution for 2 h. In addition, the best-performing cell demonstrated remarkable at-rest stability despite the use of a liquid electrolyte. Approximately 70% of the initial efficiency remained after more than 1 year of room-temperature storage in the dark. To better understand how dye adsorption time affects electron transport properties, this study also investigated cells based on 26-μm-thick films using electrochemical impedance spectroscopy (EIS). The EIS results show good agreement with the measured device performance parameters.
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Affiliation(s)
- Wei-Chen Chang
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, 10608, Taiwan
- Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu, 31053, Taiwan
| | - Chia-Hua Lee
- Green Energy and Environment Research Laboratories, Industrial Technology Research Institute, Hsinchu, 31053, Taiwan
| | - Wan-Chin Yu
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Chun-Min Lin
- Institute of Organic and Polymeric Materials, National Taipei University of Technology, Taipei, 10608, Taiwan
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The effect of sodium dodecyl sulfate (SDS) and cetyltrimethylammonium bromide (CTAB) on the Properties of ZnO synthesized by hydrothermal method. Int J Mol Sci 2012. [PMID: 23202952 PMCID: PMC3497326 DOI: 10.3390/ijms131013275] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
ZnO nanostructures were synthesized by hydrothermal method using different molar ratios of cetyltrimethylammonium bromide (CTAB) and Sodium dodecyl sulfate (SDS) as structure directing agents. The effect of surfactants on the morphology of the ZnO crystals was investigated by field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) techniques. The results indicate that the mixture of cationic-anionic surfactants can significantly modify the shape and size of ZnO particles. Various structures such as flakes, sheets, rods, spheres, flowers and triangular-like particles sized from micro to nano were obtained. In order to examine the possible changes in other properties of ZnO, characterizations like powder X-ray diffraction (PXRD), thermogravimetric and differential thermogravimetric analysis (TGA-DTG), FTIR, surface area and porosity and UV-visible spectroscopy analysis were also studied and discussed.
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Calestani D, Pattini F, Bissoli F, Gilioli E, Villani M, Zappettini A. Solution-free and catalyst-free synthesis of ZnO-based nanostructured TCOs by PED and vapor phase growth techniques. NANOTECHNOLOGY 2012; 23:194008. [PMID: 22539075 DOI: 10.1088/0957-4484/23/19/194008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Zinc oxide (ZnO) is one of the most promising materials for realizing three-dimensional (3D) nanostructured transparent conducting oxides (TCOs) on large scale, because it is cheap, it can be modified with large concentrations of trivalent elements (such Al, Ga or In) and it is characterized by good electron mobility, wide bandgap and visible-range transparency. But, above all, it can be easily obtained in the form of different nanostructures with a large number of growth techniques. A solution-free and catalyst-free approach has been explored here by the vapor phase synthesis of vertically aligned ZnO nanorods on ZnO:Al (AZO) films grown by pulsed electron deposition (PED). The obtained nanostructured TCOs resulted to be homogeneous on large areas and easily patternable by means of mechanical masks. The morphology, crystalline structure, electrical and optical properties of the obtained samples have been characterized in depth. The possible use of such a nanostructured TCO in excitonic (e.g. DSSC) or low-reflectivity traditional solar cells is discussed.
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Affiliation(s)
- D Calestani
- IMEM-CNR, Parco Area delle Scienze 37/A, PARMA 43124, Italy
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17
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Ong WL, Low QX, Huang W, van Kan JA, Ho GW. Patterned growth of vertically-aligned ZnO nanorods on a flexible platform for feasible transparent and conformable electronics applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm00027j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Kevin M, Tho WH, Ho GW. Transferability of solution processed epitaxial Ga:ZnO films; tailored for gas sensor and transparent conducting oxide applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32590j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Yue G, Lin Y, Wen X, Wang L, Peng D. SnS homojunction nanowire-based solar cells. ACTA ACUST UNITED AC 2012. [DOI: 10.1039/c2jm32116e] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Guerguerian G, Elhordoy F, Pereyra CJ, Marotti RE, Martín F, Leinen D, Ramos-Barrado JR, Dalchiele EA. ZnO nanorod/CdS nanocrystal core/shell-type heterostructures for solar cell applications. NANOTECHNOLOGY 2011; 22:505401. [PMID: 22108174 DOI: 10.1088/0957-4484/22/50/505401] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
ZnO/CdS core/shell nanorod arrays were fabricated by a two-step method. Single-crystalline ZnO nanorod arrays were first electrochemically grown on SnO(2):F (FTO) glass substrates. Then, CdS nanocrystals were deposited onto the ZnO nanorods, using the successive ion layer adsorption and reaction (SILAR) technique, to form core/shell nanocable architectures. Structural, morphological and optical properties of the nanorod heterojunctions were investigated. The results indicate that CdS single-crystalline domains with a mean diameter of about 7 nm are uniformly and conformally covered on the surface of the single-crystalline ZnO nanorods. ZnO absorption with a bandgap energy value of 3.30 ± 0.02 eV is present in all optical transmittance spectra. Another absorption edge close to 500 nm corresponding to CdS with bandgap energy values between 2.43 and 2.59 eV is observed. The dispersion in this value may originate in quantum confinement inside the nanocrystalline material. The appearance of both edges corresponds with the separation of ZnO and CdS phases and reveals the absorption increase due to CdS sensitizer. The photovoltaic performance of the resulting ZnO/CdS core/shell nanorod arrays has been investigated as solar cell photoanodes in a photoelectrochemical cell under white illumination. In comparison with bare ZnO nanorod arrays, a 13-fold enhancement in photoactivity was observed using the ZnO/CdS coaxial heterostructures.
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Affiliation(s)
- Gariné Guerguerian
- Instituto de Física and CINQUIFIMA, Facultad de Ingeniería, Julio Herrera y Reissig 565, C.C. 30, 11000 Montevideo, Uruguay
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