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Wang X, Tian W, Ye Y, Chen Y, Wu W, Jiang S, Wang Y, Han X. Surface modifications towards superhydrophobic wood-based composites: Construction strategies, functionalization, and perspectives. Adv Colloid Interface Sci 2024; 326:103142. [PMID: 38555834 DOI: 10.1016/j.cis.2024.103142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 03/04/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
Amidst the burgeoning interest in multifunctional superhydrophobic wood-based composites (SWBCs) for their varied applications and the need for improved environmental resilience, recent efforts focus on enhancing their utility by integrating features such as mechanical and chemical stability, self-healing capabilities, flame resistance, and antimicrobial properties. Research indicates that various external conditions can influence the wettability and additional characteristics of SWBCs. This comprehensive review outlines three critical factors affecting SWBCs' performance: synthesis methods, wood taxonomy, and chemical agents. It further provides a detailed overview of SWBCs' specific attributes, including essential qualities for diverse applications and the limitations posed by different contexts. Additionally, it elaborates on performance evaluation techniques, offering a foundational framework for SWBCs' practical application. This work aims to serve as an important resource for future research and development in SWBC engineering.
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Affiliation(s)
- Xiaoyi Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Wei Tian
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yuhang Ye
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yuan Chen
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100000, China
| | - Weijie Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Shaohua Jiang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yuli Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xiaoshuai Han
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
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Rodrigues AV, Onishi BSD, Ribeiro SJL. Facile Formation of Sulfurized Nanorod-Like ZnO/Zn(OH) 2 and Hierarchical Flower-Like γ-Zn(OH) 2 /ϵ-Zn(OH) 2 from a Green Synthesis and Application as Luminescent Solar Concentrator. Chemphyschem 2023; 24:e202300134. [PMID: 37594478 DOI: 10.1002/cphc.202300134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 08/18/2023] [Accepted: 08/18/2023] [Indexed: 08/19/2023]
Abstract
This research endeavors to overcome the significant challenge of developing materials that simultaneously possess photostability and photosensitivity to UV-visible irradiation. Sulfurized nanorod (NR)-like ZnO/Zn(OH)2 and hierarchical flower-like γ-Zn(OH)2 /ϵ-Zn(OH)2 were identified from XRD diffraction patterns and Raman vibrational modes. The sulfurized material, observed by FEG-SEM and TEM, showed diameters ranging from 10 and 40 nm and lengths exceeding 200 nm. The S2- ions intercalated Zn2+ , modulating NRs to dumbbell-like microrods. SAED and HRTEM illustrated the atomic structure in (101) crystal plane. Its direct band gap of 3.0 eV was attributed to the oxygen vacancies, which also contribute to the deep-level emissions at 422 and 485 nm. BET indicated specific surface area of 4.4 m2 g-1 and pore size as mesoporosity, which are higher compared to the non-sulfurized analogue. These findings were consistent with the observed photocurrent, photostability and photoluminescence (PL), further supporting the suitability of sulfurized NR-like ZnO/Zn(OH)2 as a promising candidate for Luminescent solar concentrators (LSC)-photovoltaic (PV) system.
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Affiliation(s)
- Aline Varella Rodrigues
- Department of Analytical, Physical, and Inorganic Chemistry, Institute of Chemistry at São Paulo State UNESP University, Prof. Francisco Degni, n. 55, 14800-060, Araraquara-SP, Brazil
| | - Bruno Seiki Domingos Onishi
- Department of Analytical, Physical, and Inorganic Chemistry, Institute of Chemistry at São Paulo State UNESP University, Prof. Francisco Degni, n. 55, 14800-060, Araraquara-SP, Brazil
| | - Sidney José Lima Ribeiro
- Department of Analytical, Physical, and Inorganic Chemistry, Institute of Chemistry at São Paulo State UNESP University, Prof. Francisco Degni, n. 55, 14800-060, Araraquara-SP, Brazil
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Huang YC, Zhou J, Nomenyo K, Ionescu RE, Gokarna A, Lerondel G. Facile, wafer-scale compatible growth of ZnO nanowires via chemical bath deposition: assessment of zinc ion contribution and other limiting factors. NANOSCALE ADVANCES 2020; 2:5288-5295. [PMID: 36132032 PMCID: PMC9419593 DOI: 10.1039/d0na00434k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 10/23/2020] [Accepted: 09/14/2020] [Indexed: 06/15/2023]
Abstract
ZnO is a highly promising, multifunctional nanomaterial having various versatile applications in the fields of sensors, optoelectronics, photovoltaics, photocatalysts and water purification. However, the real challenge lies in producing large scale, well-aligned, highly reproducible ZnO nanowires (NWs) using low cost techniques. This large-scale production of ZnO NWs has stunted the development and practical usage of these NWs in fast rising fields such as photocatalysis or in photovoltaic applications. The present article shows an effective, simple approach for the uniform, aligned growth of ZnO NWs on entire silicon wafers (sizes 3 or 4 inches), using a low-temperature Chemical Bath Deposition (CBD) technique. In addition to this, a systematic study of the substrate size dependent growth of NWs has been conducted to better understand the effect of the limitation in the deposition rate of Zn2+ ions on the growth of NWs. The growth rate of ZnO NWs is seen to have a strong relationship with the substrate size. Also, the loading efficiency of the Zn2+ ions is higher in ZnO NWs grown on a 3-inch silicon wafer in comparison to those grown on a small piece. An in-depth time dependent growth study conducted on entire 3-inch wafers to track the morphological evolution (length, diameter and number of the NWs) reveals that the growth rate of the length of the NWs reaches a saturation state in a short time span of 20 min. Assessment of the overall homogeneity of the NWs grown on the 3-inch wafer and simultaneous growth on two entire 4-inch silicon wafers has also been demonstrated in this article. This demonstration of large-scale, well-aligned controllable, aligned growth of ZnO NWs on entire silicon wafers is a first step towards NW based devices especially for applications such as photovoltaic, water purification, photocatalysis or biomedical applications.
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Affiliation(s)
- Yu-Chen Huang
- Laboratory of Light, Nanomaterials and Nanotechnologies (L2n), CNRS ERL 7004, University of Technology of Troyes 12 rue Marie Curie BP 2060 10004 Troyes France
| | - Junze Zhou
- Laboratory of Light, Nanomaterials and Nanotechnologies (L2n), CNRS ERL 7004, University of Technology of Troyes 12 rue Marie Curie BP 2060 10004 Troyes France
| | - Komla Nomenyo
- Laboratory of Light, Nanomaterials and Nanotechnologies (L2n), CNRS ERL 7004, University of Technology of Troyes 12 rue Marie Curie BP 2060 10004 Troyes France
| | - Rodica Elena Ionescu
- Laboratory of Light, Nanomaterials and Nanotechnologies (L2n), CNRS ERL 7004, University of Technology of Troyes 12 rue Marie Curie BP 2060 10004 Troyes France
| | - Anisha Gokarna
- Laboratory of Light, Nanomaterials and Nanotechnologies (L2n), CNRS ERL 7004, University of Technology of Troyes 12 rue Marie Curie BP 2060 10004 Troyes France
| | - Gilles Lerondel
- Laboratory of Light, Nanomaterials and Nanotechnologies (L2n), CNRS ERL 7004, University of Technology of Troyes 12 rue Marie Curie BP 2060 10004 Troyes France
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Yang D, Cho I, Kim D, Lim MA, Li Z, Ok JG, Lee M, Park I. Gas Sensor by Direct Growth and Functionalization of Metal Oxide/Metal Sulfide Core-Shell Nanowires on Flexible Substrates. ACS APPLIED MATERIALS & INTERFACES 2019; 11:24298-24307. [PMID: 31187618 DOI: 10.1021/acsami.9b06951] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
We have developed a novel fabrication method for flexible gas sensors for toxic gases based on sequential wet chemical reaction. In specific, zinc oxide (ZnO) nanowires were locally synthesized and directly integrated on a flexible polymer substrate using localized hydrothermal synthesis methods and their surfaces were selectively functionalized with palladium (Pd) nanoparticles using a liquid phase deposition process. Because the entire process is conducted at a low temperature in a mild precursor solution, it can be applied for flexible substrates. Furthermore, the surface of ZnO nanowires was sulfurized by hydrogen sulfide (H2S) gas to form zinc oxide/zinc sulfide (ZnO/ZnS) core-shell nanowires for stable sensing of H2S gas. The locally synthesized ZnO/ZnS core-shell nanowires enable an ultracompact-sized device, and Pd nanoparticles improve the sensing performance and reduce the operating temperature (200 °C). The device shows a high sensitivity [(Ggas - Gair)/Gair × 100% = 4491% to 10 ppm], fast response (response/recovery time <100 s) to hydrogen sulfide, and outstanding selectivity (>100 times) to other toxic gases (e.g., carbon monoxide, acetone, ethanol, and toluene). Moreover, vertically synthesized nanowires provide a long bending path, which reduces the mechanical stresses on the structure. The devices showed stable gas sensing performance under 9 mm positive radius of curvature and 5 mm negative radius of curvature. The mechanical robustness of the device was also verified by numerical simulations which showed dramatic decrease of maximum stress and strain to 4.2 and 5.0%, respectively.
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Affiliation(s)
- Daejong Yang
- Department of Mechanical and Automotive Engineering , Kongju National University , 1223-24 Cheonan-daero , Seobuk-gu, Cheonan , Chungcheongnam-do 31080 , South Korea
| | | | - Donghwan Kim
- Korea Electric Power Research Institute (KEPRI) , Korea Electric Power Corporation (KEPCO) , 105 Munji-ro , Yuseong-gu, Daejeon 34056 , South Korea
| | | | - Zhiyong Li
- Systems Research Lab , Hewlett Packard Laboratory , 1501 Page Mill Rd , Palo Alto , California 94304 , United States
| | - Jong G Ok
- Department of Mechanical and Automotive Engineering , Seoul National University of Science and Technology , 232 Gongneung-ro , Nowon-gu, Seoul 01811 , South Korea
| | - Moonjin Lee
- Korea Research Institute of Ships & Ocean Engineering , 1312-32 Yuseong-daero , Yuseong-gu, Daejeon 34103 , South Korea
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Parangusan H, Ponnamma D, Al-Maadeed MAA, Marimuthu A. Nanoflower-like Yttrium-doped ZnO Photocatalyst for the Degradation of Methylene Blue Dye. Photochem Photobiol 2018; 94:237-246. [DOI: 10.1111/php.12867] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Accepted: 10/25/2017] [Indexed: 02/04/2023]
Affiliation(s)
| | | | - Mariam Al Ali Al-Maadeed
- Center for Advanced Materials; Qatar University; Doha Qatar
- Materials Science and Technology Program; Qatar University; Doha Qatar
| | - Alagar Marimuthu
- Center for Research and Post Graduate Studies; Department of Physics; Ayya Nadar Janaki Ammal College; Sivakasi Tamil Nadu India
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Cuba M, Muralidharan G. Improved luminescence intensity and stability of thermal annealed ZnO incorporated Alq3 composite films. J Fluoresc 2015; 25:1629-35. [PMID: 26399539 DOI: 10.1007/s10895-015-1649-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Accepted: 09/09/2015] [Indexed: 10/23/2022]
Abstract
The 30 wt% of ZnO (weight percentage of ZnO has been optimised) incorporated tris- (8-hydroxyquinoline)aluminum (Alq3) has been synthesised and coated on to glass substrates using dip coating method. The structural and optical properties of the Alq3/ZnO composite film after thermal annealing from 50 to 300 °C insteps 50° has been studied and reported. XRD pattern reveals the presence of crystalline ZnO in all the annealed films. The films annealed above 150 °C reveal the presence of crystalline Alq3 along with crystalline ZnO. The FTIR spectra confirm the presence of hydroxyquinoline and ZnO vibration in all the annealed composite films. The composite films annealed above 150 °C show a partial sublimation and degradation of hydroxyquinoline compounds. The ZnO incorporated composite films (Alq3/ZnO) exhibit two emission peaks, one corresponding to ZnO at 487 nm and another at 513 nm due to Alq3. The films annealed at 200 °C exhibit maximum photoluminescence (PL) intensity than pristine film at 513 nm when excited at 390 nm.
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Affiliation(s)
- M Cuba
- Department of Physics, Gandhigram Rural Institute-Deemed University, Gandhigram, 624302, Tamil Nadu, India
| | - G Muralidharan
- Department of Physics, Gandhigram Rural Institute-Deemed University, Gandhigram, 624302, Tamil Nadu, India.
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8
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Zhang S, Yin B, Jiang H, Qu F, Umar A, Wu X. Hybrid ZnO/ZnS nanoforests as the electrode materials for high performance supercapacitor application. Dalton Trans 2015; 44:2409-15. [DOI: 10.1039/c4dt03270e] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterostructured ZnO/ZnS nanoforests are prepared through a simple two-step thermal evaporation method at 650 °C and 1300 °C in a tube furnace under the flow of argon gas, respectively.
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Affiliation(s)
- Siwen Zhang
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- P. R. China
| | - Bosi Yin
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- P. R. China
| | - He Jiang
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- P. R. China
| | - Fengyu Qu
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- P. R. China
| | - Ahmad Umar
- Promising Centre for Sensors and Electronic Devices (PCSED)
- Najran University
- Najran 11001
- Kingdom of Saudi Arabia
- Department of Chemistry
| | - Xiang Wu
- Key Laboratory for Photonic and Electronic Bandgap Materials
- Ministry of Education
- Harbin Normal University
- Harbin 150025
- P. R. China
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9
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Bi F, Dong X, Wang J, Liu G. Electrospinning preparation and photoluminescence properties of Y3Al5O12:Tb3+ nanostructures. LUMINESCENCE 2014; 30:751-9. [PMID: 25428033 DOI: 10.1002/bio.2816] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 08/16/2014] [Accepted: 10/15/2014] [Indexed: 11/11/2022]
Abstract
Novel nanostructures of Y3Al5O12:Tb(3+) (denoted as YAG:Tb(3+) for short) nanobelts and nanofibers were fabricated by calcination of the respective electrospun PVP/[Y(NO3)3 + Tb(NO3)3 + Al(NO3)3] composite nanobelts and nanofibers. YAG:Tb(3+) nanostructures are cubic in structure with a space group of Ia 3d. The thickness and width of the YAG:7%Tb(3+) nanobelts are respectively ca. 125 nm and 5.9 ± 0.3 m, and the diameter of YAG:7%Tb(3+) nanofibers is 166.0 ± 20 nm (95% confidence level). The YAG:Tb(3+) nanostructures emit predominantly at 544 nm from the energy levels transition of (5) D4 → (7) F5 of Tb(3+) ions under the excitation of 274-nm ultraviolet light. It was found that the optimum doping molar concentration of Tb(3+) ions for YAG:Tb(3+) nanostructures was 7%. Compared with YAG:7%Tb(3+) nanofibers, YAG:7%Tb(3+) nanobelts exhibit a stronger photoluminescence (PL) intensity under the same doping concentration. Commission International de l'Eclairage (CIE) analysis demonstrates that the emitting colors of YAG:Tb(3+) nanostructures are located in the green region and color-tuned luminescence can be obtained by changing the doping concentration of Tb(3+) and morphologies of the nanostructures, which could be applied in the field of optical telecommunication and optoelectronic devices. The possible formation mechanisms of YAG:Tb(3+) nanobelts and nanofibers are also proposed.
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Affiliation(s)
- Fei Bi
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun, China
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun, China
| | - Jinxian Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun, China
| | - Guixia Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province, Changchun University of Science and Technology, Changchun, China
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Costenaro D, Carniato F, Gatti G, Marchese L, Bisio C. Organo-modified ZnO nanoparticles: tuning of the optical properties for PLED device fabrication. NEW J CHEM 2014. [DOI: 10.1039/c4nj01331j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Florica C, Preda N, Enculescu M, Zgura I, Socol M, Enculescu I. Superhydrophobic ZnO networks with high water adhesion. NANOSCALE RESEARCH LETTERS 2014; 9:385. [PMID: 25136286 PMCID: PMC4131485 DOI: 10.1186/1556-276x-9-385] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/01/2014] [Indexed: 05/31/2023]
Abstract
UNLABELLED ZnO structures were deposited using a simple chemical bath deposition technique onto interdigitated electrodes fabricated by a conventional photolithography method on SiO2/Si substrates. The X-ray diffraction studies show that the ZnO samples have a hexagonal wurtzite crystalline structure. The scanning electron microscopy observations prove that the substrates are uniformly covered by ZnO networks formed by monodisperse rods. The ZnO rod average diameter and length were tuned by controlling reactants' concentration and reaction time. Optical spectroscopy measurements demonstrate that all the samples display bandgap values and emission bands typical for ZnO. The electrical measurements reveal percolating networks which are highly sensitive when the samples are exposed to ammonia vapors, a variation in their resistance with the exposure time being evidenced. Other important characteristics are that the ZnO rod networks exhibit superhydrophobicity, with water contact angles exceeding 150° and a high water droplet adhesion. Reproducible, easily scalable, and low-cost chemical bath deposition and photolithography techniques could provide a facile approach to fabricate such ZnO networks and devices based on them for a wide range of applications where multifunctionality, i.e., sensing and superhydrophobicity, properties are required. PACS 81.07.-b; 81.05.Dz; 68.08.Bc.
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Affiliation(s)
- Camelia Florica
- National Institute of Materials Physics, P.O. Box MG-7, Magurele, Bucharest 077125, Romania
| | - Nicoleta Preda
- National Institute of Materials Physics, P.O. Box MG-7, Magurele, Bucharest 077125, Romania
| | - Monica Enculescu
- National Institute of Materials Physics, P.O. Box MG-7, Magurele, Bucharest 077125, Romania
| | - Irina Zgura
- National Institute of Materials Physics, P.O. Box MG-7, Magurele, Bucharest 077125, Romania
| | - Marcela Socol
- National Institute of Materials Physics, P.O. Box MG-7, Magurele, Bucharest 077125, Romania
| | - Ionut Enculescu
- National Institute of Materials Physics, P.O. Box MG-7, Magurele, Bucharest 077125, Romania
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12
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Jheng BT, Liu PT, Wu MC. Efficiency enhancement of non-selenized Cu(In,Ga)Se2 solar cells employing scalable low-cost antireflective coating. NANOSCALE RESEARCH LETTERS 2014; 9:331. [PMID: 25114632 PMCID: PMC4120737 DOI: 10.1186/1556-276x-9-331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Accepted: 06/07/2014] [Indexed: 06/03/2023]
Abstract
In this study, a non-selenized CuInGaSe2 (CIGS) solar device with textured zinc oxide (ZnO) antireflection coatings was studied. The ZnO nanostructure was fabricated by a low-temperature aqueous solution deposition method. With controlling the morphology of the solution-grown tapered ZnO nanorod coatings, the average reflectance of the CIGS solar device decreased from 8.6% to 2.1%, and the energy conversion efficiency increased from 9.1% to 11.1%. The performance improvement in the CuInGaSe2 thin-film solar cell was well explained due to the gradual increase of the refractive index between air and the top electrode of solar cell device by the insertion of the ZnO nanostructure. The results demonstrate a potential application of the ZnO nanostructure array for efficient solar device technology.
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Affiliation(s)
- Bao-Tang Jheng
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu City 30013, Taiwan
| | - Po-Tsun Liu
- Department of Photonics & Display Institute, National Chiao Tung University, Hsinchu City 30010, Taiwan
| | - Meng-Chyi Wu
- Department of Electrical Engineering, National Tsing Hua University, Hsinchu City 30013, Taiwan
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13
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Jia W, Jia B, Qu F, Wu X. Towards a highly efficient simulated sunlight driven photocatalyst: a case of heterostructured ZnO/ZnS hybrid structure. Dalton Trans 2014; 42:14178-87. [PMID: 23942966 DOI: 10.1039/c3dt51712h] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Large scale ZnO/ZnS heterostructured microflowers are fabricated through a rapid and facile strategy via microwave-assisted in situ surface sulfidation route. The as-obtained product possesses an average diameter of about 2 μm and is composed of many thin nanowires. Through a careful inspection under various growth conditions, the morphologies of the as-prepared hybrid structures could be controlled by tailoring the concentration of thioacetamide (TAA) solution during the microwave irradiation, and a possible growth mechanism was proposed. The photocatalytic experiment results for the photodegradation of eosin B under simulated sunlight irradiation revealed that the hybrid nanostructures possess significantly higher photocatalytic activity which is about triple that of the original ZnO precursors, indicating their potential applications in organically polluted water treatment. The optimal sulfidation concentration to realize the maximum photocatalytic activity in the ZnO/ZnS hybrid structures is also proposed and discussed. Meanwhile, this facile, rapid microwave-assisted strategy is scalable and can be extended to synthesize other oxide/sulfide (MOx/MSy) heterostructures.
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Affiliation(s)
- Weina Jia
- Key Laboratory for Photonic and Electronic Bandgap Materials, Ministry of Education and College of Chemistry and Chemical Engineering, Harbin Normal University, Harbin 150025, P. R. China.
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14
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Varaprasad K, Ramam K, Mohan Reddy GS, Sadiku R. Development and characterization of nano-multifunctional materials for advanced applications. RSC Adv 2014. [DOI: 10.1039/c4ra09980j] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Multifunctional zinc oxide–bismuth ferrite and tin dioxide–bismuth ferrite have been synthesized using a double precipitation technique.
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Affiliation(s)
- Kokkarachedu Varaprasad
- Departamento de Ingeniería de Materiales-DIMAT
- Facultad de ingeniería
- Universidad de Concepción
- Concepción, Chile
- Centro de Investigación de Polímeros Avanzados
| | - Koduri Ramam
- Departamento de Ingeniería de Materiales-DIMAT
- Facultad de ingeniería
- Universidad de Concepción
- Concepción, Chile
| | | | - Rotimi Sadiku
- Department of Polymer Technology
- Tshwane University of Technology
- CSIR Campus
- Pretoria, South Africa
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15
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Ding L, Zhang R, Fan L. Electrochemical route to the synthesis of ZnO microstructures: its nestlike structure and holding of Ag particles. NANOSCALE RESEARCH LETTERS 2013; 8:78. [PMID: 23414592 PMCID: PMC3599267 DOI: 10.1186/1556-276x-8-78] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Accepted: 01/06/2013] [Indexed: 06/01/2023]
Abstract
A simple and facile electrochemical route was developed for the shape-selective synthesis of large-scaled series of ZnO microstructures, including petal, flower, sphere, nest and clew aggregates of ZnO laminas at room temperature. This route is based on sodium citrate-directed crystallization. In the system, sodium citrate can greatly promote ZnO to nucleate and directly grow by selectively capping the specific ZnO facets because of its excellent adsorption ability. The morphology of ZnO is tuned by readily adjusting the concentration of sodium citrate and the electrodeposition time. Among the series structures, the remarkable ZnO nestlike structure can be used as a container to hold not only the interlaced ZnO laminas but also Ag nanoparticles in the center. The special heterostructures of nestlike ZnO holding Ag nanoparticles were found to display the superior properties on the surface-enhanced Raman scattering. This work has signified an important methodology to produce a wide assortment of desired microstructures of ZnO. PACS: 81 Materials science 81.07.-b nanoscale materials and structures Fabrication Characterization 81.15.-z Methods of deposition of films Coatings Film growth and epitaxy.
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Affiliation(s)
- Ling Ding
- Department of Chemistry, Beijing Normal University, 100875, Beijing, China
| | - Ruixue Zhang
- Department of Chemistry, Beijing Normal University, 100875, Beijing, China
| | - Louzhen Fan
- Department of Chemistry, Beijing Normal University, 100875, Beijing, China
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16
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Zhang Y, Liu W, Wang R. From ZnS nanoparticles, nanobelts, to nanotetrapods: the ethylenediamine modulated anisotropic growth of ZnS nanostructures. NANOSCALE 2012; 4:2394-2399. [PMID: 22374104 DOI: 10.1039/c2nr11985d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Yuanpeng Zhang
- Key Laboratory of Micro-nano Measurement-Manipulation and Physics (Ministry of Education), Department of Physics, Beijing University of Aeronautics and Astronautics, Beijing 100191, People's Republic of China
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Hao YM, Lou SY, Zhou SM, Yuan RJ, Zhu GY, Li N. Structural, optical, and magnetic studies of manganese-doped zinc oxide hierarchical microspheres by self-assembly of nanoparticles. NANOSCALE RESEARCH LETTERS 2012; 7:100. [PMID: 22296968 PMCID: PMC3292928 DOI: 10.1186/1556-276x-7-100] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2011] [Accepted: 02/02/2012] [Indexed: 05/26/2023]
Abstract
In this study, a series of manganese [Mn]-doped zinc oxide [ZnO] hierarchical microspheres [HMSs] are prepared by hydrothermal method only using zinc acetate and manganese acetate as precursors and ethylene glycol as solvent. X-ray diffraction indicates that all of the as-obtained samples including the highest Mn (7 mol%) in the crystal lattice of ZnO have a pure phase (hexagonal wurtzite structure). A broad Raman spectrum from as-synthesized doping samples ranges from 500 to 600 cm-1, revealing the successful doping of paramagnetic Mn2+ ions in the host ZnO. Optical absorption analysis of the samples exhibits a blueshift in the absorption band edge with increasing dopant concentration, and corresponding photoluminescence spectra show that Mn doping suppresses both near-band edge UV emission and defect-related blue emission. In particular, magnetic measurements confirm robust room-temperature ferromagnetic behavior with a high Curie temperature exceeding 400 K, signifying that the as-formed Mn-doped ZnO HMSs will have immense potential in spintronic devices and spin-based electronic technologies.
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Affiliation(s)
- Yao-Ming Hao
- Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004, People's Republic of China
| | - Shi-Yun Lou
- Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004, People's Republic of China
| | - Shao-Min Zhou
- Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004, People's Republic of China
| | - Rui-Jian Yuan
- Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004, People's Republic of China
| | - Gong-Yu Zhu
- Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004, People's Republic of China
| | - Ning Li
- Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng, 475004, People's Republic of China
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18
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Ma C, Zhou Z, Wei H, Yang Z, Wang Z, Zhang Y. Rapid large-scale preparation of ZnO nanowires for photocatalytic application. NANOSCALE RESEARCH LETTERS 2011; 6:536. [PMID: 21968032 PMCID: PMC3212074 DOI: 10.1186/1556-276x-6-536] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 10/03/2011] [Indexed: 05/03/2023]
Abstract
ZnO nanowires are a promising nanomaterial for applications in the fields of photocatalysis, nano-optoelectronics, and reinforced composite materials. However, the challenge of producing large-scale ZnO nanowires has stunted the development and practical utilization of ZnO nanowires. In this study, a modified carbothermal reduction method for preparing large-scale ZnO nanowires in less than 5 min is reported. The preparation was performed in a quartz tube furnace at atmospheric pressure without using any catalysts. A mixed gas of air and N2 with a volume ratio of 45:1 was used as the reactive and carrier gas. About 0.8 g ZnO nanowires was obtained using 1 g ZnO and 1 g graphite powder as source materials. The obtained nanowires exhibited a hexagonal wurtzite crystal structure with an average diameter of about 33 nm. Good photocatalytic activity of the nanowires toward the photodegradation of methylene blue dye under UV irradiation was also demonstrated.
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Affiliation(s)
- Chunyu Ma
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao tong University, Shanghai 200240, China
| | - Zhihua Zhou
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao tong University, Shanghai 200240, China
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Hao Wei
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao tong University, Shanghai 200240, China
| | - Zhi Yang
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao tong University, Shanghai 200240, China
| | - Zhiming Wang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
| | - Yafei Zhang
- Key Laboratory for Thin Film and Microfabrication of Ministry of Education, Research Institute of Micro/Nano Science and Technology, Shanghai Jiao tong University, Shanghai 200240, China
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19
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Zhang H, Wu X, Qu F, Zhao G. ZnO microrod arrays grown on a curved sphere surface and their optical properties. CrystEngComm 2011. [DOI: 10.1039/c1ce05457k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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