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Manjunatha C, Rastogi CK, Manmadha Rao B, Girish Kumar S, Varun S, Raitani K, Maurya G, Karthik B, Swathi C, Sadrzadeh M, Khosla A. Advances in Hierarchical Inorganic Nanostructures for Efficient Solar Energy Harvesting Systems. CHEMSUSCHEM 2024; 17:e202301755. [PMID: 38478710 DOI: 10.1002/cssc.202301755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2023] [Revised: 03/10/2024] [Indexed: 04/17/2024]
Abstract
The urgent need to address the global energy and environmental crisis necessitates the development of efficient solar-power harvesting systems. Among the promising candidates, hierarchical inorganic nanostructures stand out due to their exceptional attributes, including a high specific surface area, abundant active sites, and tunable optoelectronic properties. In this comprehensive review, we delve into the fundamental principles underlying various solar energy harvesting technologies, including dye-sensitized solar cells (DSSCs), photocatalytic, photoelectrocatalytic (water splitting), and photothermal (water purification) systems, providing a foundational understanding of their operation. Thereafter, the discussion is focused on recent advancements in the synthesis, design, and development of hierarchical nanostructures composed of diverse inorganic material combinations, tailored for each of these solar energy harvesting systems. We meticulously elaborate on the distinct synthesis methods and conditions employed to fine-tune the morphological features of these hierarchical nanostructures. Furthermore, this review offers profound insights into critical aspects such as electron transfer mechanisms, band gap engineering, the creation of hetero-hybrid structures to optimize interface chemistry through diverse synthesis approaches, and precise adjustments of structural features. Beyond elucidating the scientific fundamentals, this review explores the large-scale applications of the aforementioned solar harvesting systems. Additionally, it addresses the existing challenges and outlines the prospects for achieving heightened solar-energy conversion efficiency.
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Affiliation(s)
- C Manjunatha
- Centre for Nanomaterials and Devices, Department of Chemistry, RV College of Engineering, Bengaluru, India
| | | | - B Manmadha Rao
- Department of Physics, VIT-AP University, Amaravati, Andhra Pradesh, India
| | - S Girish Kumar
- Centre for Nanomaterials and Devices, Department of Chemistry, RV College of Engineering, Bengaluru, India
| | - S Varun
- Department of Chemical Engineering, RV College of Engineering, Bengaluru, India
| | - Karthik Raitani
- Centre for Advanced Studies, Dr. A. P. J. Abdul Kalam Technical University, Lucknow, India
| | - Gyanprakash Maurya
- Centre for Advanced Studies, Dr. A. P. J. Abdul Kalam Technical University, Lucknow, India
| | - B Karthik
- Department of Chemical Engineering, RV College of Engineering, Bengaluru, India
| | - C Swathi
- Department of Chemical Engineering, RV College of Engineering, Bengaluru, India
| | - Mohtada Sadrzadeh
- Department of Mechanical Engineering, Advanced Water Research Lab (AWRL), University of Alberta, Canada
| | - Ajit Khosla
- School of Advanced Materials and Nanotechnology, Xidian University, Xi'an, Province, China
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Roda D, Trzciński K, Łapiński M, Gazda M, Sawczak M, Nowak AP, Szkoda M. The new method of ZnIn 2S 4 synthesis on the titania nanotubes substrate with enhanced stability and photoelectrochemical performance. Sci Rep 2023; 13:21263. [PMID: 38040750 PMCID: PMC10692104 DOI: 10.1038/s41598-023-48309-9] [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: 04/12/2023] [Accepted: 11/24/2023] [Indexed: 12/03/2023] Open
Abstract
In this work, ZnIn2S4 layers were obtained on fluorine doped tin oxide (FTO) glass and TiO2 nanotubes (TiO2NT) using a hydrothermal process as photoanodes for photoelectrochemical (PEC) water splitting. Then, samples were annealed and the effect of the annealing temperature was investigated. Optimization of the deposition process and annealing of ZnIn2S4 layers made it possible to obtain an FTO-based material generating a photocurrent of 1.2 mA cm-2 at 1.62 V vs. RHE in a neutral medium. In contrast, the highest photocurrent in the neutral electrolyte obtained for the TiO2NT-based photoanode reached 0.5 mA cm-2 at 1.62 V vs. RHE. In addition, the use of a strongly acidic electrolyte allowed the generated photocurrent by the TiO2NT-based photoanode to increase to 3.02 mA cm-2 at 0.31 V vs. RHE. Despite a weaker photoresponse in neutral electrolyte than the optimized FTO-based photoanode, the use of TiO2NT as a substrate allowed for a significant increase in the photoanode's operating time. After 2 h of illumination, the photocurrent response of the TiO2NT-based photoanode was 0.21 mA cm-2, which was 42% of the initial value. In contrast, the FTO-based photoanode after the same time generated a photocurrent of 0.02 mA cm-2 which was only 1% of the initial value. The results indicated that the use of TiO2 nanotubes as a substrate for ZnIn2S4 deposition increases the photoanode's long-term stability in photoelectrochemical water splitting. The proposed charge transfer mechanism suggested that the heterojunction between ZnIn2S4 and TiO2 played an important role in improving the stability of the material by supporting charge separation.
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Affiliation(s)
- D Roda
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.
| | - K Trzciński
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
- Advanced Materials Center, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - M Łapiński
- Advanced Materials Center, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
- Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - M Gazda
- Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - M Sawczak
- Centre for Plasma and Laser Engineering, The Szewalski Institute of Fluid Flow Machinery, Fiszera 14, 80-231, Gdańsk, Poland
| | - A P Nowak
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
- Advanced Materials Center, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - M Szkoda
- Department of Chemistry and Technology of Functional Materials, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
- Advanced Materials Center, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
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Sulaeman AP, Pratama RA, Pratomo U, Matharu AS, Primadona I. S,N-GQD sensitization effect on the improvement of ZnO nanopencil photoelectrochemical properties. RSC Adv 2023; 13:18396-18403. [PMID: 37342812 PMCID: PMC10278090 DOI: 10.1039/d3ra02907g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 06/08/2023] [Indexed: 06/23/2023] Open
Abstract
ZnO photoanodes in photoelectrochemical (PEC) water splitting for green-hydrogen production are limited due to the large bandgap that is only confined to UV light. One of the strategies for broadening the photo absorption range and improving light harvesting is to modify a one-dimensional (1D) nanostructure to a three-dimensional (3D) ZnO superstructure coupling with a narrow-bandgap material, in this case, a graphene quantum dot photosensitizer. Herein, we studied the effect of sulfur and nitrogen co-doped graphene quantum dot (S,N-GQD) sensitization on the surface of ZnO nanopencil (ZnO NPc) to give a photoanode in the visible light spectrum. In addition, the photo energy harvesting between the 3D-ZnO and 1D-ZnO, as represented by neat ZnO NPc and ZnO nanorods (ZnO NRs), was also compared. Several instruments, including SEM-EDS, FTIR, and XRD revealed the successful loading of S,N-GQDs on the ZnO NPc surfaces through the layer-by-layer assembly technique. The advantages are S,N-GQDs's band gap energy (2.92 eV) decreasing ZnO NPc's band gap value from 3.169 eV to 3.155 eV after being composited with S,N-GQDs and facilitating the generation of electron-hole pairs for PEC activity under visible light irradiation. Furthermore, the electronic properties of ZnO NPc/S,N-GQDs were improved significantly over those of bare ZnO NPc and ZnO NR. The PEC measurements revealed that the ZnO NPc/S,N-GQDs stood out with a maximum current density of 1.82 mA cm-2 at +1.2 V (vs. Ag/AgCl), representing a 153% and 357% improvement over the bare ZnO NPc (1.19 mA cm-2) and the ZnO NR (0.51 mA cm-2), respectively. These results suggest that ZnO NPc/S,N-GQDs could have potential for water splitting applications.
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Affiliation(s)
- Allyn Pramudya Sulaeman
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran Sumedang 45363 Indonesia
| | - Rifky Adhia Pratama
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran Sumedang 45363 Indonesia
| | - Uji Pratomo
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran Sumedang 45363 Indonesia
| | - Avtar S Matharu
- Green Chemistry Centre of Excellence, Department of Chemistry, University of York York YO10 5DD UK
| | - Indah Primadona
- Research Center for Advanced Material, National Research and Innovation Agency Kawasan Puspiptek Banten 15314 Indonesia
- Collaboration Research Center for Advanced Energy Material, National Research and Innovation Agency-Institut Teknologi Bandung Indonesia
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Guler AC, Antos J, Masar M, Urbanek M, Machovsky M, Kuritka I. Comprehensive evaluation of photoelectrochemical performance dependence on geometric features of ZnO nanorod electrodes. NANOSCALE ADVANCES 2023; 5:3091-3103. [PMID: 37260485 PMCID: PMC10228492 DOI: 10.1039/d3na00089c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 04/26/2023] [Indexed: 06/02/2023]
Abstract
The impact of geometric features, light absorption spectra, and electrochemical active surface area on photoelectrochemical properties was investigated in this work. Nanoforests of ZnO nanorods with rationally controlled morphologies were grown on ITO substrates by the hydrothermal method and utilized as a model for this purpose. The size of the nanorods was systematically adjusted by varying the concentration of polyethyleneimine as a cation surfactant in the growth solution. It was found that the emergent geometric characteristics (i.e. the aspect ratio) increased almost at the same pace as the electrochemically active surface area, but the light scattering effect slightly increased as a result of the random spatial orientation of the nanorods. The large surface area and the void space between nanorods increased the photon-to-current conversion efficiency by promoting the hole transfer process at the electrode/electrolyte interface. A maximum photocurrent density of 0.06 mA cm-2 (0.5 V vs. NHE) for smaller diameter and length ZnO nanorods (ZnO-P1) was obtained under 365 nm UV light illumination. Additionally, we provide visual evidence that a shorter photogenerated hole diffusion distance results in improved charge separation efficiency using Mn2+ as the photogenerated hole imaging agent. Therefore, the present work demonstrates a facile strategy for nanoforest morphology improvement for generating strong contact at the ZnO NR electrode/electrolyte interface, which is favourable in energy conversion and storage technologies.
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Affiliation(s)
- Ali Can Guler
- Centre of Polymer Systems, Tomas Bata University in Zlin Tr. T. Bati 5678 760 01 Zlin Czech Republic
| | - Jan Antos
- Centre of Polymer Systems, Tomas Bata University in Zlin Tr. T. Bati 5678 760 01 Zlin Czech Republic
| | - Milan Masar
- Centre of Polymer Systems, Tomas Bata University in Zlin Tr. T. Bati 5678 760 01 Zlin Czech Republic
| | - Michal Urbanek
- Centre of Polymer Systems, Tomas Bata University in Zlin Tr. T. Bati 5678 760 01 Zlin Czech Republic
| | - Michal Machovsky
- Centre of Polymer Systems, Tomas Bata University in Zlin Tr. T. Bati 5678 760 01 Zlin Czech Republic
| | - Ivo Kuritka
- Centre of Polymer Systems, Tomas Bata University in Zlin Tr. T. Bati 5678 760 01 Zlin Czech Republic
- Department of Chemistry, Faculty of Technology, Tomas Bata University in Zlín Vavrečkova 5669 760 01 Zlín Czech Republic
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Pratomo U, Pratama RA, Irkham I, Sulaeman AP, Mulyana JY, Primadona I. 3D-ZnO Superstructure Decorated with Carbon-Based Material for Efficient Photoelectrochemical Water-Splitting under Visible-Light Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1380. [PMID: 37110965 PMCID: PMC10146915 DOI: 10.3390/nano13081380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 03/27/2023] [Accepted: 04/14/2023] [Indexed: 06/19/2023]
Abstract
The depletion of fossil fuels is a worldwide problem that has led to the discovery of alternative energy sources. Solar energy is the focus of numerous studies due to its huge potential power and environmentally friendly nature. Furthermore, one such area of study is the production of hydrogen energy by engaging photocatalysts using the photoelectrochemical (PEC) method. 3-D ZnO superstructures are extensively explored, showing high solar light-harvesting efficiency, more reaction sites, great electron transportation, and low electron-hole recombination. However, further development requires the consideration of several aspects, including the morphological effects of 3D-ZnO on water-splitting performance. This study reviewed various 3D-ZnO superstructures fabricated through different synthesis methods and crystal growth modifiers, as well as their advantages and limitations. Additionally, a recent modification by carbon-based material for enhanced water-splitting efficiency has been discussed. Finally, the review provides some challenging issues and future perspectives on the improvement of vectorial charge carrier migration and separation between ZnO as well as carbon-based material, using rare earth metals, which appears to be exciting for water-splitting.
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Affiliation(s)
- Uji Pratomo
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung Sumedang Km.21, Kabupaten Sumedang 45363, Indonesia; (U.P.); (R.A.P.); (I.I.); (A.P.S.)
| | - Rifky Adhia Pratama
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung Sumedang Km.21, Kabupaten Sumedang 45363, Indonesia; (U.P.); (R.A.P.); (I.I.); (A.P.S.)
| | - Irkham Irkham
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung Sumedang Km.21, Kabupaten Sumedang 45363, Indonesia; (U.P.); (R.A.P.); (I.I.); (A.P.S.)
| | - Allyn Pramudya Sulaeman
- Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Padjadjaran, Jl. Raya Bandung Sumedang Km.21, Kabupaten Sumedang 45363, Indonesia; (U.P.); (R.A.P.); (I.I.); (A.P.S.)
| | - Jacob Yan Mulyana
- Department of Applied Chemistry, Graduate School of Urban Environmental Sciences, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachioji, Tokyo 192-0397, Japan;
- School of Education, Faculty of Arts and Education, Deakin University, 221 Burwood Hwy, Burwood, VIC 3125, Australia
| | - Indah Primadona
- Research Center for Advanced Material, National Research and Innovation Agency, Kawasan Sains dan Teknologi BJ. Habibie, Tangerang Selatan 15314, Indonesia
- Collaboration Research Center for Advanced Energy Materials, National Research and Innovation Agency-Institut Teknologi Bandung, Bandung 40132, Indonesia
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Semiconductors-based Z-scheme materials for photoelectrochemical water splitting: A review. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023]
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Arvanagh FM, Masoumabad AB, Yangjeh AH, Bayrami M, Feizpoor S, Nourani MR, Taheri RA. Anti-inflammatory and collagenation effects of zinc oxide-based nanocomposites biosynthesised with Mentha longifolia leaf extract. J Wound Care 2023; 32:44-54. [PMID: 36630114 DOI: 10.12968/jowc.2023.32.1.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVE The integration of nanomaterials and herbal medicine has led to the design of new nanocomposites, which are therapeutically more effective. The purpose of this study was to prepare different zinc oxide (ZnO)-based nanoparticles (NPs) via Mentha longifolia extract based on gauze linen fibre and study its effects on wound healing. METHODS The textural properties, morphology, thermal stability, purity, spectroscopic and phase structure of nanoparticles were investigated. Subsequently, male Wistar rats were subjected to wounds in six different treatment groups: Group I: control; group II: ZnO/W prepared in water (W); group III: ZnO/M synthesised with Mentha longifolia (M) extract; group IV: ZnO/copper(II) oxide (CuO)/M nanocomposite synthesised with M extract; group IV: treated with ZnO/silver (Ag)/M nanocomposite; group V: treated with ZnO/Ag/M nanocomposite; and finally, group VI: treated with ZnO/CuO/Ag/M nanocomposite. In all groups, the wounds were treated for 21 days with prepared samples. Every seven days, after measuring the decreasing rate of the wound size, tissue samples from each group were taken for histopathological analysis. The prepared tissue sections were assessed by haematoxylin and eosin staining for the formation of the epidermis, dermis and muscular tissue, and Masson's Trichrome staining for the formation of collagen fibres. RESULTS The results showed that the ZnO/CuO/Ag/M nanocomposite was a significantly more effective wound healing material in comparison with other samples (p<0.05). CONCLUSION In this study, the integration of ZnO/CuO/Ag nanocomposites with secondary metabolites of Mentha longifolia gave rise to a superior combination, which could support different phases of wound healing via the regulation of cytokines and growth factors in the course of healing.
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Affiliation(s)
| | | | - Aziz Habibi Yangjeh
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Mahdi Bayrami
- Department of Biology, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Solmaz Feizpoor
- Department of Chemistry, Faculty of Science, University of Mohaghegh Ardabili, Ardabil, Iran
| | - Mohammad Reza Nourani
- Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ramezan Ali Taheri
- Nanobiotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Tian J, Chen Z, Ma L, Hou J, Feng C, Jing J, Chen D. Intrinsic Mechanism Analyses of Significantly Enhanced Photoelectrochemical Performance of the Bi 2MoO 6/BiVO 4 System. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:8906-8917. [PMID: 35816725 DOI: 10.1021/acs.langmuir.2c01031] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this paper, the electrodeposition and hydrothermal methods were used to prepare the Bi2MoO6/BiVO4 photoelectrode, and the intrinsic mechanism of significantly enhanced photoelectrochemical performance of the prepared Bi2MoO6/BiVO4 heterojunction system was studied. Work functions of Bi2MoO6 and BiVO4 were analyzed using a scanning Kelvin probe, and the direction of the heterojunction electric field and the transfer direction of photogenerated carriers were finally determined by the relative positions of the energy bands and the Fermi levels of Bi2MoO6 and BiVO4. A type II Bi2MoO6/BiVO4 heterojunction system was finally confirmed to be formed. Formation of the type II Bi2MoO6/BiVO4 heterojunction system reduces the recombination efficiency of photogenerated electrons and holes and thus improves the photoelectrochemical performance. The photogenerated current density of the Bi2MoO6/BiVO4 photoelectrode reaches 1.47 mA·cm-2, which is 4.9 times that of pure BiVO4 and thousands of times that of Bi2MoO6. The successful application of a scanning Kelvin probe in the verification of the heterojunction type provides theoretical and technical bases for the design and construction of efficient heterojunctions.
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Affiliation(s)
- Jing Tian
- School of Materials Science and Hydrogen Energy, Foshan University, 18 Jiangwanyi Road, Foshan 528000, China
- Key Laboratory of Marine Environmental Corrosion and Bio-fouling, Institute of Oceanology, Chinese Academy of Sciences, 7 Nanhai Road, Qingdao 266071, China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Wenhai Road, Qingdao 266237, China
- Guangdong Key Laboratory for Hydrogen Energy Technologies, 18 Jiangwanyi Road, Foshan 528000, China
| | - Zhuoyuan Chen
- School of Materials Science and Hydrogen Energy, Foshan University, 18 Jiangwanyi Road, Foshan 528000, China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Wenhai Road, Qingdao 266237, China
- Guangdong Key Laboratory for Hydrogen Energy Technologies, 18 Jiangwanyi Road, Foshan 528000, China
| | - Li Ma
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Wenhai Road, Qingdao 266237, China
| | - Jian Hou
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Wenhai Road, Qingdao 266237, China
| | - Chang Feng
- School of Materials Science and Hydrogen Energy, Foshan University, 18 Jiangwanyi Road, Foshan 528000, China
- Guangdong Key Laboratory for Hydrogen Energy Technologies, 18 Jiangwanyi Road, Foshan 528000, China
| | - Jiangping Jing
- School of Materials Science and Hydrogen Energy, Foshan University, 18 Jiangwanyi Road, Foshan 528000, China
- State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute (LSMRI), Wenhai Road, Qingdao 266237, China
- Guangdong Key Laboratory for Hydrogen Energy Technologies, 18 Jiangwanyi Road, Foshan 528000, China
| | - Dongchu Chen
- School of Materials Science and Hydrogen Energy, Foshan University, 18 Jiangwanyi Road, Foshan 528000, China
- Guangdong Key Laboratory for Hydrogen Energy Technologies, 18 Jiangwanyi Road, Foshan 528000, China
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Zhu X, Wang J, Cai L, Wu Y, Ji M, Jiang H, Chen J. Dissection of the antibacterial mechanism of zinc oxide nanoparticles with manipulable nanoscale morphologies. JOURNAL OF HAZARDOUS MATERIALS 2022; 430:128436. [PMID: 35158241 DOI: 10.1016/j.jhazmat.2022.128436] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/27/2022] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
Despite the extensive uses of ZnO nanoparticles as promising antimicrobial agents to tackle the severe microbial infections, the systematic antibacterial studies on ZnO nanoparticles with manipulable nanoscale morphologies at the genetic expression level remain ill-defined. In this study, via a controllable thermal decomposition, ZnO nanoparticles of different morphologies were facilely prepared. Additionally, the surface PEGylation of ZnO was conducted to obtain the nanoparticles of low biotoxicity. While all the prepared ZnO nanoparticles exhibited the significantly chemical activities, the pronounced antibacterial effect of obtained ZnO nanoparticles was also identified, in which the ultra-small ones (~5 nm) showed the best performance. Moreover, the antibacterial activities of ZnO nanoparticles were studied by bacterial nucleic acid leakage, alkaline phosphatase, biofilm and reactive oxygen species (ROS) assays. Furthermore, the transcriptome analysis of ZnO nanoparticles with different morphologies against Escherichia coli (E. coli) revealed the underlying antibacterial mechanism involved the signal transduction, material transport, energy metabolism and other biological processes. Therefore, the cost-effective preparation of ZnO nanoparticles with distinct morphological features provides insights for the development of application specific antibacterial agents.
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Affiliation(s)
- Xinyi Zhu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Jun Wang
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China
| | - Ling Cai
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yuan Wu
- Department of Medical Oncology, Jiangsu Cancer Hospital, Jiangsu Institute of Cancer Research, The Affiliated Cancer Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Minghui Ji
- School of Nursing, Nanjing Medical University, Nanjing 211166, China
| | - Huijun Jiang
- School of Pharmacy, Nanjing Medical University, 211166 Nanjing, China
| | - Jin Chen
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing 211166, China; School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China; Jiangsu Province Engineering Research Center of Antibody Drug, Key Laboratory of Antibody Technique of National Health Commission, Nanjing Medical University, Nanjing 211166, China; The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public Health, Nanjing Medical University, 211166 Nanjing, China.
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Synthesis of a Lignin/Zinc Oxide Hybrid Nanoparticles System and Its Application by Nano-Priming in Maize. NANOMATERIALS 2022; 12:nano12030568. [PMID: 35159913 PMCID: PMC8839687 DOI: 10.3390/nano12030568] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 01/25/2022] [Accepted: 02/04/2022] [Indexed: 02/05/2023]
Abstract
Nanotechnologies are attracting attention in various scientific fields for their technological and application potential, including their use as bio-activators and nanocarriers in agriculture. This work aimed to synthesize a hybrid material (ZnO@LNP) consisting of lignin nanoparticles containing zinc oxide (4 wt %). The synthesized ZnO hybrid material showed catalytic effect toward thermal degradation, as evidenced by the TGA investigation, while both spectroscopic and contact angle measurements confirmed a modification of surface hydrophilicity for the lignin nanoparticles due to the presence of hydrophobic zinc oxide. In addition, the antioxidant activity of the ZnO@LNP and the zinc release of this material were evaluated. At the application level, this study proposes for the first time the use of such a hybrid system to prime maize seeds by exploiting the release characteristics of this material. Concerning the dosage applied, ZnO@LNP promoted inductive effects on the early stages of seed development and plant growth and biomass development of young seedlings. In particular, the ZnO@LNP stimulated, in the primed seeds, a higher content of chlorophyll, carotenoids, anthocyanins, total phenols, and a better antioxidant activity, as supported by the lower levels of lipid peroxidation found when compared to the control samples.
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Mohan S, Gupta SK, Mao Y. Morphology-oxygen evolution activity relationship of iridium( iv) oxide nanomaterials. NEW J CHEM 2022. [DOI: 10.1039/d1nj05133d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This work demonstrated shape tuning of IrO2 nanoparticles to nanocube and nanorods in molten salt and demonstrated the exemplary performance of IrO2 nanorods as an electrocatalyst for oxygen evolution reaction even surpassing commercial IrO2.
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Affiliation(s)
- Swati Mohan
- Department of Chemistry, University of Texas Rio Grande Valley, 1201 West University Drive, Edinburg, Texas 78539, USA
| | - Santosh K. Gupta
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai-400094, India
| | - Yuanbing Mao
- Department of Chemistry, Illinois Institute of Technology, 3105 South Dearborn Street, Chicago, IL 60616, USA
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12
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Jain SK, Fazil M, Naaz F, Pandit NA, Ahmed J, Alshehri SM, Mao Y, Ahmad T. Silver-doped SnO 2 nanostructures for photocatalytic water splitting and catalytic nitrophenol reduction. NEW J CHEM 2022. [DOI: 10.1039/d1nj05432e] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Driven by the quest of renewable and clean energy sources, researchers around the globe are seeking solutions to replace non-renewable fossil fuels to meet the ever-increasing energy supply requirements and solve the relevant environment concerns.
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Affiliation(s)
- Sapan K. Jain
- Nanochemistry Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Mohd Fazil
- Nanochemistry Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Farha Naaz
- Nanochemistry Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Nayeem Ahmad Pandit
- Nanochemistry Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
| | - Jahangeer Ahmed
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Saad M. Alshehri
- Department of Chemistry, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Yuanbing Mao
- Department of Chemistry, Illinois Institute of Technology, 3105 South Dearborn Street, Chicago, IL 60616, USA
| | - Tokeer Ahmad
- Nanochemistry Laboratory, Department of Chemistry, Jamia Millia Islamia, New Delhi 110025, India
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13
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Abstract
Solar-driven water splitting is a promising route toward clean H2 energy and the photoelectrochemical approach attracts a strong interest. The oxygen evolution reaction is widely accepted as the performance limiting stage in this technology, which emphasizes the need of innovative anode materials. Metal oxide semiconductors are relevant in this respect owing to their cost-effectiveness and broad availability. The combination of chemical vapor deposition and atomic layer deposition was implemented in this study for the synthesis of randomly oriented CNT-ZnO core-shell nanostructures forming an adhering porous coating. Relative to a directly coated ZnO on Si, the porous structure enables a high interface area with the electrolyte and a resulting 458% increase of the photocurrent density under simulated solar light irradiation. The photoelectrochemical characterization correlates this performance to the effective electrons withdrawing along the carbon nanotubes (CNTs), and the resulting decrease of the onset potential. In terms of durability, the CNT-ZnO core–shell structure features an enhanced photo-corrosion stability for 8 h under illumination and with a voltage bias.
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14
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Kohlmann N, Hansen L, Lupan C, Schürmann U, Reimers A, Schütt F, Adelung R, Kersten H, Kienle L. Fabrication of ZnO Nanobrushes by H 2-C 2H 2 Plasma Etching for H 2 Sensing Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:61758-61769. [PMID: 34907774 DOI: 10.1021/acsami.1c18679] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Zinc oxide has widespread use in diverse applications due to its distinct properties. Many of these applications benefit from controlling the morphology on the nanoscale, where for example gas sensing is strongly enhanced for high surface-to-volume ratios. In this work the formation of novel ZnO nanobrushes by plasma etching treatment as a new approach is presented. The morphology and structure of the ZnO nanobrushes are studied in detail by transmission and scanning electron microscopy. It is revealed that ZnO nanobrush structures are fabricated by self-patterned preferential etching of ZnO microtetrapods in a hydrogen-acetylene plasma. The etching process was found to be most effective at 1% C2H2 admixture. Nanowire arrays are formed enabled by sidewall passivation due to a-C:H deposition. The nanobrush structures are further stabilized by simultaneous deposition of a SiOx layer from the opposite direction. Highly sensitive (gas response S = 148), selective, and fast (response time 15 s, recovery time 6 s) hydrogen sensors are fabricated from single nanobrushes. Single nanobrush sensors show enhanced sensing performance in increased gas response S of at least 10 times and improved response as well as recovery times when compared to nonporous single ZnO nanorod sensors due to the small diameters (≈50 nm) of the formed nanowires as well as the strongly enhanced surface-to-volume ratio of the nanobrushes by a factor of more than 10.
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Affiliation(s)
- Niklas Kohlmann
- Institute for Materials Science, Kiel University, 24143 Kiel, Germany
| | - Luka Hansen
- Institute of Experimental and Applied Physics, Kiel University, 24118 Kiel, Germany
| | - Cristian Lupan
- Center for Nanotechnology and Nanosensors, Department of Microelectronics and Biomedical Engineering, Technical University of Moldova, Chişinǎu 2004, Moldova
| | - Ulrich Schürmann
- Institute for Materials Science, Kiel University, 24143 Kiel, Germany
| | - Armin Reimers
- Institute for Materials Science, Kiel University, 24143 Kiel, Germany
| | - Fabian Schütt
- Institute for Materials Science, Kiel University, 24143 Kiel, Germany
| | - Rainer Adelung
- Institute for Materials Science, Kiel University, 24143 Kiel, Germany
| | - Holger Kersten
- Institute of Experimental and Applied Physics, Kiel University, 24118 Kiel, Germany
| | - Lorenz Kienle
- Institute for Materials Science, Kiel University, 24143 Kiel, Germany
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15
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Liu G, Yu X, Xu R, Zhu X, Ma Y, Ma L. Multiple Regulation Effects of Ammonium Acetate on ZnO Growth Process in Chemical Bath Deposition. Chemistry 2021; 27:17620-17627. [PMID: 34672035 DOI: 10.1002/chem.202103064] [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: 08/24/2021] [Indexed: 11/10/2022]
Abstract
Chemical bath deposition method has been used to synthesize a variety of ZnO morphology structures. However, the specificity and interaction of acetate and ammonium ions with ZnO crystal during the growth process remain elusive. This study contributes to understand the roles of ammonium acetate on the growth mechanism of ZnO in Zn(NO3 )2 -HMTA system. The growth process indicates that the nucleation experienced Zn2+ -layered basic zinc salts (LBZs)-ZnO process, while the self-assembled unit changed from urchin-shaped, rod-shaped to a fully coupled twin-shaped structure with increasing ammonium acetate concentration. Ammonium acetate dominates the growth process by combing the ligand-ligand interaction of acetate ions binding to the same Zn-rich (0001) polar surface and ammonium ions regulating hexamethylenetetramine (HMTA) hydrolysis. Relatively regular hexagonal wurtzite structure and a dissolve-renucleation-regrowth process which retains the twin-shaped template and renucleates at the same position are observed at ∼10 mM ammonium acetate. Photoelectrochemistry (PEC) measurements show that the uniform hexagonal ZnO rods (Y-10, the sample named as Y-x (x represents x mM ammonium acetate, herein, x is 10 mM)) have a maximum photocurrent density of 1.54 mA cm-2 at 1.23 V (vs. RHE), much higher than that of the dumbbell-shaped ZnO rods (Y-50, 0.20 mA cm-2 ) at the same voltage. These results provide a further explanation of morphology regulation mechanisms on ZnO synthesis processes and pave the road for more practical applications.
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Affiliation(s)
- Gen Liu
- Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, No.92, Weijin Road, Tianjin, 300072, P. R. China
| | - Xue Yu
- Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, No.92, Weijin Road, Tianjin, 300072, P. R. China
| | - Rui Xu
- Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, No.92, Weijin Road, Tianjin, 300072, P. R. China
| | - Xiaodong Zhu
- Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, No.92, Weijin Road, Tianjin, 300072, P. R. China
| | - Yanqing Ma
- Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, No.92, Weijin Road, Tianjin, 300072, P. R. China.,State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, No.92, Weijin Road, Tianjin, 300072, P. R. China
| | - Lei Ma
- Tianjin International Center for Nanoparticles and Nanosystems, Tianjin University, No.92, Weijin Road, Tianjin, 300072, P. R. China
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16
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Joseph Anthuvan A, Kumaravel K, Chinnuswamy V. Synergetic effect of hierarchical zinc oxide (ZnO) nanostructure with enhanced adsorption and antibacterial action towards waterborne detrimental contaminants. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01967-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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17
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Song B, Xie Y, Cui X, Zhan G, Mao J, Fan C, Shao Y, Sun Y, Wang Y. Effective Regulation of ZnO Surface Facets for Enhanced Photoluminescence Properties Assisted by Zinc Quaternary Ammonium Salts. ACS OMEGA 2021; 6:17455-17463. [PMID: 34278131 PMCID: PMC8280691 DOI: 10.1021/acsomega.1c01841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 06/07/2021] [Indexed: 06/13/2023]
Abstract
Novel ZnO twined-mushroom structures highly exposed in (001̅) planes were fabricated via a facile solvothermal synthesis with assistance of a zinc quaternary ammonium salt in the methanol-water solvent to show enhanced photoluminescence properties. A series of ZnO morphologies regulated with different surface facets were obtained in both MeOH-H2O and EtOH MeOH-H2O solvents respectively, tuning the proportion of alcohol. The self-aggregation mechanism was proposed based on the time-controlled experiment to evaluate the formation of twined-mushroom structures. The selective adsorptions of anions from zinc salt precursors determine the shape of subunits and direct the subunits, which act as building blocks to form the order aggregations.
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Affiliation(s)
- Bo Song
- Hefei
Technology College, Hefei 238000, China
- Changzhou
Huawei Electronics Co. Ltd., Changzhou 213144, China
- Institute
of Advanced Materials, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yun Xie
- Hefei
Technology College, Hefei 238000, China
| | - Xia Cui
- Hefei
Technology College, Hefei 238000, China
- Changzhou
Huawei Electronics Co. Ltd., Changzhou 213144, China
- Institute
of Advanced Materials, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Guangyao Zhan
- Changzhou
Huawei Electronics Co. Ltd., Changzhou 213144, China
| | - Jing Mao
- Hefei
Technology College, Hefei 238000, China
| | - Changzeng Fan
- State
Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, China
| | | | - Yueming Sun
- Institute
of Advanced Materials, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
| | - Yuqiao Wang
- Institute
of Advanced Materials, School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, China
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18
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Del Buono D, Di Michele A, Costantino F, Trevisan M, Lucini L. Biogenic ZnO Nanoparticles Synthesized Using a Novel Plant Extract: Application to Enhance Physiological and Biochemical Traits in Maize. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:1270. [PMID: 34065934 PMCID: PMC8151215 DOI: 10.3390/nano11051270] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/01/2021] [Accepted: 05/08/2021] [Indexed: 12/13/2022]
Abstract
The need to increase crop productivity and resistance directs interest in nanotechnology. Indeed, biogenic metal oxide nanoparticles can promote beneficial effects in plants, while their synthesis avoids the environmental impacts of conventional synthetic procedures. In this context, this research aimed to synthesize biogenic zinc oxide nanoparticles (ZnO-NPs) using, for the first time, an extract of a wild and spontaneous aquatic species, Lemna minor (duckweed). The effectiveness of this biogenic synthesis was evidenced for comparison with non-biogenic ZnO-NPs (obtained without using the plant extract), which have been synthesized in this research. XRD (X-ray diffraction), FE-SEM (field emission gun electron scanning microscopy), EDX (energy dispersive x-ray spectroscopy), TEM (transmission electron microscope) and UV-vis (ultraviolet-visible spectrophotometry) showed the biogenic approach effectiveness. The duckweed extract was subjected to UHPLC-ESI/QTOF-MS (ultra high-pressure liquid chromatography quadrupole time of flight mass spectrometry) phenolic profiling. This untargeted characterization highlighted a high and chemically diverse content in the duckweed extract of compounds potentially implicated in nanoparticulation. From an application standpoint, the effect of biogenic nanoparticles was investigated on some traits of maize subjected to seed priming with a wide range of biogenic ZnO-NPs concentrations. Inductive effects on the shoot and root biomass development were ascertained concerning the applied dosage. Furthermore, the biogenic ZnO-NPs stimulated the content of chlorophylls, carotenoids, and anthocyanin. Finally, the study of malondialdehyde content (MDA) as a marker of the oxidative status further highlighted the beneficial and positive action of the biogenic ZnO-NPs on maize.
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Affiliation(s)
- Daniele Del Buono
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, University of Perugia, Borgo XX Giugno, 06121 Perugia, Italy;
| | - Alessandro Di Michele
- Department of Physics and Geology, University of Perugia, via Elce di Sotto, 06123 Perugia, Italy;
| | - Ferdinando Costantino
- Dipartimento di Chimica, Biologia e Biotecnologia, University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
| | - Marco Trevisan
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (M.T.); (L.L.)
| | - Luigi Lucini
- Department for Sustainable Food Process, Università Cattolica del Sacro Cuore, 29122 Piacenza, Italy; (M.T.); (L.L.)
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19
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Soltaninejad V, Ahghari MR, Taheri-Ledari R, Maleki A. Bifunctional PVA/ZnO/AgI/Chlorophyll Nanocomposite Film: Enhanced Photocatalytic Activity for Degradation of Pollutants and Antimicrobial Property under Visible-Light Irradiation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:4700-4713. [PMID: 33821643 DOI: 10.1021/acs.langmuir.1c00501] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Here, poly(vinyl alcohol) (PVA) with numerous hydroxyl groups has been applied as a suitable substrate for efficient formation of zinc oxide (ZnO) nanoparticles with a flower shape (confirmed by electron-scanning microscopy), silver iodide (AgI) nanoparticles, and chlorophyll (Chl), as a natural-based photocatalyst (PVA/ZnO/AgI/Chl). First, an efficient preparation route for the PVA/ZnO/AgI/Chl nanophotocatalyst is presented starting from the extraction of Chl from fresh spinach. Then, the catalytic role of the prepared composite is precisely investigated in degradation of methylene blue (MB). The effects of visible-light irradiation, different contact times, and the employed ingredients on the architecture of the PVA/ZnO/AgI/Chl are screened in the degradation process of MB. It is demonstrated that the best result (MB removal efficiency ca. 95.5%) is achieved by applying the visible-light irradiation using a LED lamp (70 W, λ = 425 nm) for a 60 min duration. Moreover, the photocatalytic performance of PVA/ZnO/AgI/Chl has been further confirmed by degradation of Congo red (CR) (ca. 92%, in 150 min) and 4-chlorophenol (4-CP) (88%, in 270 min), as well. As another function of the prepared PVA/ZnO/AgI/Chl composite, a substantial antibacterial property against human bacterial pathogens such as Staphylococcus aureus and Escherichia coli as Gram-positive and Gram-negative bacteria has been noticed, studied by agar diffusion cup plate and colony methods. The zones of inhibition have been evaluated ca. 20 and 12 mm for the S. aureus and E. coli cell lines, respectively. Finally, a great synergy between the prepared composite and the visible light has been observed through the examination of the live bacteria: 99.6% for S. aureus and 99.8% for E. coli in the presence of visible light, after the subjection of PVA/ZnO/AgI/Chl particles to the bacteria, verified by the colony counter method.
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Affiliation(s)
- Vahhab Soltaninejad
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Mohammad Reza Ahghari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Reza Taheri-Ledari
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
| | - Ali Maleki
- Catalysts and Organic Synthesis Research Laboratory, Department of Chemistry, Iran University of Science and Technology, Tehran 16846-13114, Iran
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20
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Yan T, Min Y, Lin M, Chen C, Lee C, Zhao L, Ye N, Chou MMC, Liu H, Zhou W. Intersected nonpolar ZnO nanosail arrays aligned epitaxially on LiGaO
2
substrate towards enhanced photoelectrochemical responses. NANO SELECT 2021. [DOI: 10.1002/nano.202000273] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Affiliation(s)
- Tao Yan
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Yunxiao Min
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Mei‐Yi Lin
- Department of Materials and Optoelectronic Science National Sun Yat‐sen University Kaohsiung 80424 Taiwan
| | - Chenlong Chen
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Chun‐Yu Lee
- Department of Materials and Optoelectronic Science National Sun Yat‐sen University Kaohsiung 80424 Taiwan
| | - Lili Zhao
- Institute for Advanced Interdisciplinary Research (IAIR) University of Jinan Jinan 250022 China
| | - Ning Ye
- Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou 350002 China
| | - Mitch M. C. Chou
- Department of Materials and Optoelectronic Science National Sun Yat‐sen University Kaohsiung 80424 Taiwan
| | - Hong Liu
- Institute for Advanced Interdisciplinary Research (IAIR) University of Jinan Jinan 250022 China
| | - Weijia Zhou
- Institute for Advanced Interdisciplinary Research (IAIR) University of Jinan Jinan 250022 China
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21
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Jiang J, Wang H, An H, Du G. Controlled Growth of CdS Nanostep Structured Arrays to Improve Photoelectrochemical Performance. Front Chem 2020; 8:577582. [PMID: 33363104 PMCID: PMC7758423 DOI: 10.3389/fchem.2020.577582] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/18/2020] [Indexed: 01/08/2023] Open
Abstract
CdS nanostep-structured arrays were grown on F-doped tin oxide-coated glasses using a two-step hydrothermal method. The CdS arrays consisted of a straight rod acting as backbone and a nanostep-structured morphology on the surface. The morphology of the samples can be tuned by varying the reaction parameters. The phase purity, morphology, and structure of the CdS nanostep-structured arrays were characterized by X-ray diffraction and field emission scanning electron microscopy. The light and photoelectrochemical properties of the samples were estimated by a UV-Vis absorption spectrum and photoelectrochemical cells. The experimental results confirmed that the special nanostep structure is crucial for the remarkable enhancement of the photoelectrochemical performance. Compared with CdS rod arrays, the CdS nanostep-structured arrays showed increased absorption ability and dramatically improved photocurrent and energy conversion efficiency. This work may provide a new approach for improving the properties of photoelectrodes in the future.
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Affiliation(s)
- Jiangang Jiang
- College of Science, Northwest Agriculture and Forestry University, Shaanxi, China
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22
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Chen YC, Wu ZJ, Hsu YK. Enhancing the quasi-theoretical photocurrent density of ZnO nanorods via a lukewarm hydrothermal method. NANOSCALE 2020; 12:12292-12299. [PMID: 32285059 DOI: 10.1039/d0nr00058b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A ∼10-μm-long one-dimensional (1D) ZnO nanorod array (NRA) vertically oriented on a fluorine-doped tin oxide (FTO) coated glass substrate is successfully fabricated via a lukewarm hydrothermal method. The reflection of light from the rough surface of this ultralong ZnO NRA, resulting from the variation in the characteristic length of individual ZnO NRs in a tapered geometry, is largely suppressed. This in turn favors the ZnO NRA as a photoelectrode effectively harnessing UV-light for solar water splitting, as evidently manifested in the quasi-theoretical photocurrent density that reached ∼0.9 mA cm-2 at 1VAg/AgCl. A further contribution to such an outstanding performance stems from additional photocurrent generation by the ZnO NRA upon visible light illumination. This is attributed to a variety of native defects and the surface hydroxyl groups present in the ZnO NRA, giving rise to the mid-gap states that mediate the associated electronic transitions. Moreover, those lattice imperfections further boost the carrier concentration of the ZnO NRA to facilitate the carrier transport which in turn enhances the photoelectrochemical activity.
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Affiliation(s)
- Ying-Chu Chen
- China-UK Low Carbon College, Shanghai Jiao Tong University, No. 3, Yinlian Road, Lingang, Shanghai 201306, People's Republic of China
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23
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Gunjal AR, Kulkarni AK, Kawade UV, Sethi YA, Sonawane RS, Ook-Baeg J, Nagawade AV, Kale BB. A hierarchical SnS@ZnIn 2S 4 marigold flower-like 2D nano-heterostructure as an efficient photocatalyst for sunlight-driven hydrogen generation. NANOSCALE ADVANCES 2020; 2:2577-2586. [PMID: 36133357 PMCID: PMC9417497 DOI: 10.1039/d0na00175a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2020] [Accepted: 04/16/2020] [Indexed: 06/14/2023]
Abstract
Herein, we report the in situ single-step hydrothermal synthesis of hierarchical 2D SnS@ZnIn2S4 nano-heterostructures and the examination of their photocatalytic activity towards hydrogen generation from H2S and water under sunlight. The photoactive sulfides rationally integrate via strong electrostatic interactions between ZnIn2S4 and SnS with two-dimensional ultrathin subunits, i.e. nanopetals. The morphological study of nano-heterostructures revealed that the hierarchical marigold flower-like structure is self-assembled via the nanopetals of ZnIn2S4 with few layers of SnS nanopetals. Surprisingly, it also showed that the SnS nanopetals with a thickness of ∼25 nm couple in situ with the nanopetals of ZnIn2S4 with a thickness of ∼25 nm to form a marigold flower-like assembly with intimate contact. Considering the unique band gap (2.0-2.4 eV) of this SnS@ZnIn2S4, photocatalytic hydrogen generation from water and H2S was performed under sunlight. SnS@ZnIn2S4 exhibits enhanced hydrogen evolution, i.e. 650 μmol h-1 g-1 from water and 6429 μmol h-1 g-1 from H2S, which is much higher compared to that of pure ZnIn2S4 and SnS. More significantly, the enhancement in hydrogen generation is 1.6-2 times more for H2S splitting and 6 times more for water splitting. SnS@ZnIn2S4 forms type I band alignment, which accelerates charge separation during the surface reaction. Additionally, this has been provoked by the nanostructuring of the materials. Due to the nano-heterostructure with hierarchical morphology, the surface defects increased which ultimately suppresses the recombination of the electron-hole pair. The above-mentioned facts demonstrate a significant improvement in the interface electron transfer kinetics due to such a unique 2D nano-heterostructure semiconductor which is responsible for a higher photocatalytic activity.
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Affiliation(s)
- Aarti R Gunjal
- Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Department of Information Technology, Govt. of India Panchawati, Off Pashan Road Pune 411007 India +91 20 2589 8180 +91 20 2589 9273
- Dr John Barnabas Post-graduate School for Biological Studies, Ahmednagar College Ahmednagar India
| | - Aniruddha K Kulkarni
- Dr John Barnabas Post-graduate School for Biological Studies, Ahmednagar College Ahmednagar India
| | - Ujjwala V Kawade
- Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Department of Information Technology, Govt. of India Panchawati, Off Pashan Road Pune 411007 India +91 20 2589 8180 +91 20 2589 9273
| | - Yogesh A Sethi
- Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Department of Information Technology, Govt. of India Panchawati, Off Pashan Road Pune 411007 India +91 20 2589 8180 +91 20 2589 9273
| | - Ravindra S Sonawane
- Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Department of Information Technology, Govt. of India Panchawati, Off Pashan Road Pune 411007 India +91 20 2589 8180 +91 20 2589 9273
| | - Jin Ook-Baeg
- Korean Research Institute of Chemical Technology 305-600 South Korea
| | - Arvind V Nagawade
- Dr John Barnabas Post-graduate School for Biological Studies, Ahmednagar College Ahmednagar India
| | - Bharat B Kale
- Nanocrystalline Laboratory, Centre for Material for Electronic Technology (CMET), Department of Information Technology, Govt. of India Panchawati, Off Pashan Road Pune 411007 India +91 20 2589 8180 +91 20 2589 9273
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24
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A Bibliometric Analysis of the Publications on In Doped ZnO to be a Guide for Future Studies. METALS 2020. [DOI: 10.3390/met10050598] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This study aims to examine the studies regarding In doped ZnO published in the Web of Science database. A total of 777 articles were reached (31 March 2020). The articles were downloaded for the bibliometric analysis and collected in a file. The file was uploaded to VOSViewer programme in order to reveal the most used keywords, words in the abstracts, citation analyses, co-citation and co-authorship and countries analyses of the articles. The results showed that the most used keywords were “ZnO”, “photoluminescence”, “optical properties”, “thin films” and “doping”. These results indicate that the articles mostly focus on some characteristics of In doped ZnO thin films such as structural, optical and electrical features. When the distribution of the number of articles using the keywords by year was searched, it was found that recent articles focus mainly on synthesis of In doped ZnO film via chemical routes such as sol-gel and hydrothermal syntheses, and on ZnO-based device applications such as solar cells and gas sensors. The most used keywords were also found to be films, X-ray, glass substrate, X-ray Diffraction (XRD), spectra and layer. These results indicate that the studies mostly focus on In doped ZnO thin films as transparent conductive oxide (TCO) material used in device applications like solar cells. In this context, it was found that structural, topographical, optical, electrical and magnetic properties of In doped ZnO films were characterized in terms of defected structure or defect type, substrate temperature, film thickness and In doping content. When the distribution of these words is shown on a year-by-year basis, it is evident that more recent articles tend to focus both on efficiency and performance of In doped ZnO films as TCO in solar cells, diodes and photoluminescence applications both on nanostructures, such as nanoparticles, and nanorods for gas sensor applications. The results also indicated that Maldonado and Asomoza were the most cited authors in this field. In addition, Major, Minami and Ozgur were the most cited (co-citation) authors in this field. The most cited journals were found to be Thin Solid Films, Journal of Materials Science Materials in Electronics and Journal of Applied Physics and, more recently, Energy, Ceramics International, Applied Physics-A, Optik, Material Research Express, ACS Applied Materials and Interfaces and Optical Materials. The most co-cited journals were Applied Physics Letters, Thin Solid Films, Journal of Applied Physics, Physical Review B, and Applied Surface Science. Lastly, the countries with the highest number of documents were China, India, South Korea, USA and Japan. Consequently, it is suggested that future research needs to focus more on synthesis and characterization with different growth techniques which make In doped ZnO suitable for device applications, such as solar cells and diodes. In this context, this study may provide valuable information to researchers for future studies on the topic.
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Long X, Wang C, Wei S, Wang T, Jin J, Ma J. Layered Double Hydroxide onto Perovskite Oxide-Decorated ZnO Nanorods for Modulation of Carrier Transfer Behavior in Photoelectrochemical Water Oxidation. ACS APPLIED MATERIALS & INTERFACES 2020; 12:2452-2459. [PMID: 31845790 DOI: 10.1021/acsami.9b17965] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Despite the fact that perovskite oxides with high photoelectrochemical (PEC) stability have gained widespread concern in the field of photo(electro)catalytic water splitting, the potential as a photoelectrode has not yet fully exploited. Herein, perovskite oxide-decorated ZnO nanorod photoanode improves the vital issue that photoproduced electron-hole pairs are apt to be quenched, in which type II band alignment between perovskite oxide and ZnO plays a crucial role in extracting carriers. Further, coupling with layered double hydroxide (LDH) onto the heterostructure not only tunes surface injection behavior of charge carriers by facilitating the interface reaction dynamics but also suppresses ZnO self-corrosion for extended durability. As a result, the optimized CoAl-LDH/LaFeO3/ZnO nanorod photoanode yields a much enhancive effect for the PEC property in terms of photocurrent density (2.46 mA cm-2 at 1.23 V vs reversible hydrogen electrode under AM 1.5G), onset potential, and stability. This work signifies a feasible design to combine promising perovskite oxides with the traditional photoelectrode system for achieving efficient water splitting.
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Affiliation(s)
- Xuefeng Long
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , P. R. China
| | - Chenglong Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , P. R. China
| | - Shenqi Wei
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , P. R. China
| | - Tong Wang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , P. R. China
| | - Jun Jin
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , P. R. China
| | - Jiantai Ma
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), The Key Laboratory of Catalytic Engineering of Gansu Province, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou , Gansu 730000 , P. R. China
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Xia W, Pei Z, Leng K, Zhu X. Research Progress in Rare Earth-Doped Perovskite Manganite Oxide Nanostructures. NANOSCALE RESEARCH LETTERS 2020; 15:9. [PMID: 31933031 PMCID: PMC6957627 DOI: 10.1186/s11671-019-3243-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 12/27/2019] [Indexed: 05/12/2023]
Abstract
Perovskite manganites exhibit a broad range of structural, electronic, and magnetic properties, which are widely investigated since the discovery of the colossal magnetoresistance effect in 1994. As compared to the parent perovskite manganite oxides, rare earth-doped perovskite manganite oxides with a chemical composition of LnxA1-xMnO3 (where Ln represents rare earth metal elements such as La, Pr, Nd, A is divalent alkaline earth metal elements such as Ca, Sr, Ba) exhibit much diverse electrical properties due to that the rare earth doping leads to a change of valence states of manganese which plays a core role in the transport properties. There is not only the technological importance but also the need to understand the fundamental mechanisms behind the unusual magnetic and transport properties that attract enormous attention. Nowadays, with the rapid development of electronic devices toward integration and miniaturization, the feature sizes of the microelectronic devices based on rare earth-doped perovskite manganite are down-scaled into nanoscale dimensions. At nanoscale, various finite size effects in rare earth-doped perovskite manganite oxide nanostructures will lead to more interesting novel properties of this system. In recent years, much progress has been achieved on the rare earth-doped perovskite manganite oxide nanostructures after considerable experimental and theoretical efforts. This paper gives an overview of the state of art in the studies on the fabrication, structural characterization, physical properties, and functional applications of rare earth-doped perovskite manganite oxide nanostructures. Our review first starts with the short introduction of the research histories and the remarkable discoveries in the rare earth-doped perovskite manganites. In the second part, different methods for fabricating rare earth-doped perovskite manganite oxide nanostructures are summarized. Next, structural characterization and multifunctional properties of the rare earth-doped perovskite manganite oxide nanostructures are in-depth reviewed. In the following, potential applications of rare earth-doped perovskite manganite oxide nanostructures in the fields of magnetic memory devices and magnetic sensors, spintronic devices, solid oxide fuel cells, magnetic refrigeration, biomedicine, and catalysts are highlighted. Finally, this review concludes with some perspectives and challenges for the future researches of rare earth-doped perovskite manganite oxide nanostructures.
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Affiliation(s)
- Weiren Xia
- National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093 China
| | - Zhipeng Pei
- National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093 China
| | - Kai Leng
- National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093 China
| | - Xinhua Zhu
- National Laboratory of Solid State Microstructures, School of Physics, Nanjing University, Nanjing, 210093 China
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Zhang B, He J, Li J, Wang L, Li D. Microscale electrohydrodynamic printing of in situ reactive features for patterned ZnO nanorods. NANOTECHNOLOGY 2019; 30:475301. [PMID: 31437821 DOI: 10.1088/1361-6528/ab3db4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Patterning of zinc oxide (ZnO) nanorods has attracted considerable interests to enhance the performance of ZnO-based functional devices. Most of the existing techniques for patterned ZnO nanorods are based on conventional microfabrication methods that commonly require cleanroom environment, high-cost equipment and complicated processes. In this study, electrohydrodynamic (EHD) printing strategy was accommodated to fabricate microscale ZnO nanorods patterns based on in situ reactive inks. Smaller working voltage and larger nozzle-to-collector distance facilitated the formation of thinner PEO-Zn(NO3)2 filaments, which were decomposed into ZnO nanoparticles to serve as the seeding template for the hydrothermal growth of ZnO nanorods. The resultant ZnO nanorods can be flexibly tuned by the EHD printed patterns. The effect of growth time on the size and morphology of ZnO nanorods was investigated. Compared with the spin-coating method, the photoelectrochemical property of patterned ZnO nanorods was well controlled and showed enhanced photoelectrochemical stability. The presented method provides a flexible and rapid way to customize patterned ZnO nanorods that can be potentially used in the fields of optical detectors, biosensors or solar-driven devices.
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Affiliation(s)
- Bing Zhang
- State key laboratory for manufacturing systems engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China. Rapid manufacturing research center of Shaanxi Province, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, People's Republic of China
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Current progress in developing metal oxide nanoarrays-based photoanodes for photoelectrochemical water splitting. Sci Bull (Beijing) 2019; 64:1348-1380. [PMID: 36659664 DOI: 10.1016/j.scib.2019.07.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 06/27/2019] [Accepted: 07/03/2019] [Indexed: 01/21/2023]
Abstract
Solar energy driven photoelectrochemical (PEC) water splitting is a clean and powerful approach for renewable hydrogen production. The design and construction of metal oxide based nanoarray photoanodes is one of the promising strategies to make the continuous breakthroughs in solar to hydrogen conversion efficiency of PEC cells owing to their owned several advantages including enhanced reactive surface at the electrode/electrolyte interface, improved light absorption capability, increased charge separation efficiency and direct electron transport pathways. In this Review, we first introduce the structure, work principle and their relevant efficiency calculations of a PEC cell. We then give a summary of the state-of the-art research in the preparation strategies and growth mechanism for the metal oxide based nanoarrays, and some details about the performances of metal oxide based nanoarray photoanodes for PEC water splitting. Finally, we discuss key aspects which should be addressed in continued work on realizing high-efficiency metal oxide based nanoarray photoanodes for PEC solar water splitting systems.
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Wang H, Xia Y, Wang X, Han Y, Jiao X, Chen D. Interfacial Coupling Effect on Electron Transport in Hierarchical TaON/Au/ZnCo-LDH Photoanode with Enhanced Photoelectrochemical Water Oxidation. ACS APPLIED MATERIALS & INTERFACES 2019; 11:33062-33073. [PMID: 31419108 DOI: 10.1021/acsami.9b11521] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Rational design and construction of interface heterostructures, which can simultaneously accelerate the photoinduced carrier separation and enhance the surface water oxidation kinetics, is of great necessity for photoelectrochemical (PEC) water oxidation. Herein, we report a new strategy for boosting the PEC water oxidation by introducing Schottky junction and semiconductor/water oxidation cocatalysts (SC/WOCs) junction into the TaON photocatalyst. Compared with pristine TaON photoanode, the hierarchical TaON/Au/ZnCo-LDH (LDH = layered double hydroxide) photoanode reveals a cathodic shift of 156 mV for the onset potential and 17.3-fold photocurrent density enhancement at 1.23 V vs RHE, as well as improved long-term stability. Diagnostic efficiencies of the TaON/Au/ZnCo-LDH photoanode demonstrate that the enhanced PEC performance is not dominated by surface electrochemical water oxidation kinetics but largely contributed by the improved charge separation and transfer, indicative of synergistic effects of Au and ZnCo-LDH. Theoretical calculations further reveal that the midgap states introduced by Au and ZnCo-LDH in TaON electronic structures bring about photoexcited electrons concentrated on TaON, while holes accumulated on ZnCo-LDH to achieve efficiently spatial charge separation, which is responsible for the boosted PEC water oxidation performance. The present work highlights the importance and elucidates the mechanism of interface heterojunction in PEC water oxidation, which can provide an efficient approach to design and fabricate a new structural photoanode.
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Affiliation(s)
- Haimei Wang
- School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , P. R. China
| | - Yuguo Xia
- National Engineering Research Center for Colloidal Materials , Shandong University , Jinan 250100 , P. R. China
| | - Xiang Wang
- National Engineering Research Center for Colloidal Materials , Shandong University , Jinan 250100 , P. R. China
| | - Yanyang Han
- College of Chemistry and Chemical Engineering , Yantai University , Yantai , Shandong 264005 , P. R. China
| | - Xiuling Jiao
- School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , P. R. China
| | - Dairong Chen
- School of Chemistry and Chemical Engineering , Shandong University , Jinan 250100 , P. R. China
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30
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Shetti NP, Bukkitgar SD, Reddy KR, Reddy CV, Aminabhavi TM. ZnO-based nanostructured electrodes for electrochemical sensors and biosensors in biomedical applications. Biosens Bioelectron 2019; 141:111417. [PMID: 31202187 DOI: 10.1016/j.bios.2019.111417] [Citation(s) in RCA: 145] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Revised: 06/01/2019] [Accepted: 06/04/2019] [Indexed: 01/16/2023]
Abstract
Fascinating properties of ZnO nanostructures have created much interest due to their importance in health care and environmental monitoring. Current worldwide production and their wide range of applications signify ZnO to be a representative of multi-functional oxide material. Recent nanotechnological developments have stimulated the production of various forms of ZnO nanostructures such as nano-layers, nanoparticles, nanowires, etc. Due to their enhanced sensing properties, improved binding ability with biomolecules as well as biological activities have enabled them as suitable candidates for the fabrication of biosensor devices in the biomedical arena. In this review, the synthesis of ZnO nanostructures, mechanism of their interaction with biomolecules and their applications as sensors in health care area are discussed considering the biosensors for molecules with small molecular weight, infectious diseases, and pharmaceutical compounds.
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Affiliation(s)
- Nagaraj P Shetti
- Electrochemistry and Materials Group, Department of Chemistry, K. L. E. Institute of Technology, Affiliated to Visvesvaraya Technological University, Gokul, Hubballi, 580030, Karnataka, India.
| | - Shikandar D Bukkitgar
- Electrochemistry and Materials Group, Department of Chemistry, K. L. E. Institute of Technology, Affiliated to Visvesvaraya Technological University, Gokul, Hubballi, 580030, Karnataka, India
| | - Kakarla Raghava Reddy
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Ch Venkata Reddy
- School of Mechanical Engineering, Yeungnam University, Gyeongsan, 712-749, South Korea
| | - Tejraj M Aminabhavi
- Department of Pharmaceuticals, Soniya College of Pharmacy, Dharwad, 580 002, Karnataka, India
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31
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Govatsi K, Seferlis A, Yannopoulos SN, Neophytides SG. The photo-electrokinetics of the O2 evolution reaction on ZnO nanorods. Electrochim Acta 2019. [DOI: 10.1016/j.electacta.2018.12.082] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Duan SF, Geng YY, Pan XB, Yao XQ, Zhao YX, Li X, Tao CL, Qin DD. Tubular morphology preservation and doping engineering of Sn/P-codoped hematite for photoelectrochemical water oxidation. Dalton Trans 2019; 48:928-935. [PMID: 30565614 DOI: 10.1039/c8dt03959c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tubular hematite with high-concentration, uniform doping is regarded as a promising material for photoelectrochemical water oxidation. However, the high-temperature annealing commonly used for activating doped hematite inevitably causes deformation of the tubular structure and an increase in the trap states. In the present work, Sn-doped tubular hematite on fluorine-doped tin oxide (FTO) is successfully obtained at 750 °C from a Sn-coated FeOOH tube precursor. Sn/P codoping, which is rarely considered for hematite, is also achieved via a gas phase reaction in phosphide atmosphere. The tubular morphology allows the dopant to diffuse from both the inner and outer surfaces, thus decreasing the doping profile in the radial direction. The even distribution of Sn and P synergetically increases the carrier density of hematite by one order of magnitude, which shortens the width of the depletion layer to ca. 2.3 nm (compared with 19.3 nm for the pristine sample) and leads to prolonged carrier lifetime and efficient charge separation. In addition, this codoping protocol does not introduce additional surface trap states, as evidenced by the increased charge injection efficiency and surface kinetic analysis using intensity modulated photocurrent spectroscopy (IMPS). As a result, the morphology- and doping-engineered hematite exhibits photocurrents of 0.9 mA cm-2 at 1.23 V and 3.8 mA cm-2 at 2.0 V vs. RHE under AM 1.5 G illumination (100 mW cm-2) in 1.0 M NaOH, representing 4.5-fold and 4.8-fold enhancements, respectively, compared with the photocurrents of undoped hematite. The present method is shown to be effective for preparing multi-element-doped hematite nanotubes and may find broad application in the development of other nanotubular photoelectrodes with or without doping for efficient and robust water oxidation.
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Affiliation(s)
- Shi-Fang Duan
- College of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, People's Republic of China.
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33
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Tian S, Liu Q, Sun J, Zhu M, Wu S, Zhao X. Mesoporous ZnO nanorods array with a controllable area density for enhanced photocatalytic properties. J Colloid Interface Sci 2019; 534:389-398. [DOI: 10.1016/j.jcis.2018.09.049] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/07/2018] [Accepted: 09/14/2018] [Indexed: 01/09/2023]
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34
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Neshchimenko V, Li C, Mikhailov M, Lv J. Optical radiation stability of ZnO hollow particles. NANOSCALE 2018; 10:22335-22347. [PMID: 30468228 DOI: 10.1039/c8nr04455d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Zinc oxide has multifunctional physical properties depending on its microstructure and morphology. Herein, we reported the in situ investigations of the radiation stability of ZnO particles with hollow, ball, star and flower shapes under electron and proton irradiation. 100 keV protons with a fluence of 5 × 1015 cm-2 and 50 keV electrons with fluence ranging from 0.5 to 7 × 1016 cm-2 are employed to investigate the radiation stability of nanostructured ZnO particles. In situ reflectance, X-ray photoelectron spectra and photoluminescence were characterized in the irradiation environment to avoid the effects of the atmospheric environment on radiation induced defects. The experimental results reveal that, compared to the other shapes, the hollow structure with the best radiation stability due to the hollow structure facilitates the decrease of the accumulation of radiation defects. This study clearly demonstrates the promise of ZnO hollow particles as a plasmonic nanostructure for achieving high radiation stability, and they could be easily employed to serve as the radiation stability pigment for coatings.
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Affiliation(s)
- Vitaly Neshchimenko
- Key Laboratory of Science and Technology on Material Performance Evaluating in Space Environment, Harbin Institute of Technology, Harbin, Heilongjiang Province 150001, China.
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35
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Parize R, Garnier J, Appert E, Chaix-Pluchery O, Consonni V. Effects of Polyethylenimine and Its Molecular Weight on the Chemical Bath Deposition of ZnO Nanowires. ACS OMEGA 2018; 3:12457-12464. [PMID: 31457976 PMCID: PMC6645272 DOI: 10.1021/acsomega.8b01641] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 09/18/2018] [Indexed: 05/20/2023]
Abstract
The addition of polyethylenimine (PEI) in the standard chemical bath deposition (CBD) of ZnO nanowires has received an increasing interest for monitoring their aspect ratio, but the physicochemical processes at work are still under debate. To address this issue, the effects of PEI are disentangled from the effects of ammonia and investigated over a broad range of molecular weight (i.e., chain length) and concentration, varying from 1300 to 750 000 and from 1.5 to 10 mM, respectively. It is shown that the addition of PEI strongly favors the elongation of ZnO nanowires by suppressing the homogeneous growth at the benefit of the heterogeneous growth as well as by changing the supersaturation level through a pH modification. PEI is further found to inhibit the development of the sidewalls of ZnO nanowires by adsorbing on their nonpolar m-planes, as supported by Raman scattering analysis. The inhibition proceeds even in the low pH range, which somehow rules out the present involvement of electrostatic interactions as the dominant mechanism for the adsorption. Furthermore, it is revealed that PEI drastically affects the nucleation process of ZnO nanowires on the polycrystalline ZnO seed layer by presumably adsorbing on the nanoparticles oriented with the m-planes parallel to the surface, reducing in turn their nucleation rate as well as inducing a significant vertical misalignment. These findings, specifically showing the effects of the PEI molecular weight and concentration, cast light onto its multiple roles in the CBD of ZnO nanowires.
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36
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Nickel precursor-free synthesis of nickel cobalt-based ternary metal oxides for asymmetric supercapacitors. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.06.017] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Lai HX, Lin LY, Lin JY, Hsu YK. All binder-free electrophoresis deposition synthesis of nickel cobalt hydroxide/ultraphene and activated carbon electrodes for asymmetric supercapacitors. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.04.065] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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38
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Multian VV, Uklein AV, Zaderko AN, Kozhanov VO, Boldyrieva OY, Linnik RP, Lisnyak VV, Gayvoronsky VY. Synthesis, Characterization, Luminescent and Nonlinear Optical Responses of Nanosized ZnO. NANOSCALE RESEARCH LETTERS 2017; 12:164. [PMID: 28264532 PMCID: PMC5334190 DOI: 10.1186/s11671-017-1934-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 02/20/2017] [Indexed: 05/31/2023]
Abstract
In this study, we report soft and solvothermal methods for synthesis of zinc oxide nanoparticles (ZnO NPs). Both methods involve a precursor and are carried out at the middle low-temperature regime. The effect of different solvents on the ZnO NPs properties was studied. The nonlinear optical (NLO) response of the NPs was analyzed by the self-action of picosecond laser pulses at 1064 nm and by second harmonic generation (SHG) of a femtosecond laser pulses pump at 800 nm. The luminescence was studied within UV-visible ranges. It was shown that the NLO response efficiency significantly depends on the solvent. The obtained SHG efficiency of small (~2 nm) ZnO NPs is comparable to the one obtained for large (~150 nm) commercial ZnO NPs. The observed results are important for the application of the ZnO NPs in biolabeling.
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Affiliation(s)
- Volodymyr V Multian
- Institute of Physics, National Academy of Science of Ukraine, 46, Prospect Nauky, Kyiv, 03680, Ukraine
| | - Andrii V Uklein
- Institute of Physics, National Academy of Science of Ukraine, 46, Prospect Nauky, Kyiv, 03680, Ukraine
| | - Alexander N Zaderko
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 62a, Volodymyrska Str., Kyiv, 01601, Ukraine
| | - Vadim O Kozhanov
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 62a, Volodymyrska Str., Kyiv, 01601, Ukraine
| | - Olga Yu Boldyrieva
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 62a, Volodymyrska Str., Kyiv, 01601, Ukraine
| | - Rostyslav P Linnik
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 62a, Volodymyrska Str., Kyiv, 01601, Ukraine
| | - Vladyslav V Lisnyak
- Faculty of Chemistry, Taras Shevchenko National University of Kyiv, 62a, Volodymyrska Str., Kyiv, 01601, Ukraine.
| | - Volodymyr Ya Gayvoronsky
- Institute of Physics, National Academy of Science of Ukraine, 46, Prospect Nauky, Kyiv, 03680, Ukraine
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39
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Lin LY, Lin LY. Material Effects on the Electrocapacitive Performance for the Energy-storage Electrode with Nickel Cobalt Oxide Core/shell Nanostructures. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.08.074] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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40
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Qin DD, He CH, Li Y, Trammel AC, Gu J, Chen J, Yan Y, Shan DL, Wang QH, Quan JJ, Tao CL, Lu XQ. Fe 2 PO 5 -Encapsulated Reverse Energetic ZnO/Fe 2 O 3 Heterojunction Nanowire for Enhanced Photoelectrochemical Oxidation of Water. CHEMSUSCHEM 2017; 10:2796-2804. [PMID: 28570775 DOI: 10.1002/cssc.201700501] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 04/20/2017] [Indexed: 06/07/2023]
Abstract
Zinc oxide is regarded as a promising candidate for application in photoelectrochemical water oxidation due to its higher electron mobility. However, its instability under alkaline conditions limits its application in a practical setting. Herein, we demonstrate an easily achieved wet-chemical route to chemically stabilize ZnO nanowires (NWs) by protecting them with a thin layer Fe2 O3 shell. This shell, in which the thickness can be tuned by varying reaction times, forms an intact interface with ZnO NWs, thus protecting ZnO from corrosion in a basic solution. The reverse energetic heterojunction nanowires are subsequently activated by introducing an amorphous iron phosphate, which substantially suppressed surface recombination as a passivation layer and improved photoelectrochemical performance as a potential catalyst. Compared with pure ZnO NWs (0.4 mA cm-2 ), a maximal photocurrent of 1.0 mA cm-2 is achieved with ZnO/Fe2 O3 core-shell NWs and 2.3 mA cm-2 was achieved for the PH3 -treated NWs at 1.23 V versus RHE. The PH3 low-temperature treatment creates a dual function, passivation and catalyst layer (Fe2 PO5 ), examined by X-ray photoelectron spectroscopy, TEM, photoelectrochemical characterization, and impedance measurements. Such a nano-composition design offers great promise to improve the overall performance of the photoanode material.
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Affiliation(s)
- Dong-Dong Qin
- Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Cai-Hua He
- Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Yang Li
- Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Antonio C Trammel
- Department of Chemistry & Biochemistry, San Diego State University, San Diego, CA, 92182, USA
| | - Jing Gu
- Department of Chemistry & Biochemistry, San Diego State University, San Diego, CA, 92182, USA
| | - Jing Chen
- Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Yong Yan
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, New Jersey, 07102, USA
| | - Duo-Liang Shan
- Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Qiu-Hong Wang
- Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Jing-Jing Quan
- Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
| | - Chun-Lan Tao
- School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu, 730000, P. R. China
| | - Xiao-Quan Lu
- Key Lab of Bioelectrochemistry and Environmental Analysis of Gansu, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, 730070, P. R. China
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41
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Wang H, Tian J, Li W. Electrochemical Deposition of MgO@ZnO Shell−Core Nanorod Arrays Largely Enhances the Photoelectrochemical Water Splitting Performance. ChemElectroChem 2017. [DOI: 10.1002/celc.201700169] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hongwei Wang
- College of Environment & The Cultivation Base for State Key Laboratory; Qingdao University; No. 308 Ningxia Road Qingdao 266071 P.R. China
| | - Jing Tian
- College of Environment and Safety Engineering; Qingdao University of Science and Technology; 53# Zhengzhou Road Qingdao 266042 P.R. China
| | - Weibing Li
- College of Environment and Safety Engineering; Qingdao University of Science and Technology; 53# Zhengzhou Road Qingdao 266042 P.R. China
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Wang CH, Qin DD, Shan DL, Gu J, Yan Y, Chen J, Wang QH, He CH, Li Y, Quan JJ, Lu XQ. Assembly of g-C3N4-based type II and Z-scheme heterojunction anodes with improved charge separation for photoelectrojunction water oxidation. Phys Chem Chem Phys 2017; 19:4507-4515. [DOI: 10.1039/c6cp08066a] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
g-C3N4, studied as a metal-free photocatalyst, can lead to excellent results but the recombination of photogenerated charge carriers can substantially limit its performance.
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Li JM. 4 nm ZnO nanocrystals fabrication through electron beam irradiation on the surface of a ZnO nanoneedle formed by thermal annealing. CrystEngComm 2017. [DOI: 10.1039/c6ce02187e] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Li Q, Sun X, Lozano K, Mao Y. Dependence of Photoelectrochemical Properties on Geometry Factors of Interconnected “Caterpillar-like” ZnO Networks. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.162] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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46
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Wei L, Liu QX, Zhu B, Liu WJ, Ding SJ, Lu HL, Jiang A, Zhang DW. Low-Cost and High-Productivity Three-Dimensional Nanocapacitors Based on Stand-Up ZnO Nanowires for Energy Storage. NANOSCALE RESEARCH LETTERS 2016; 11:213. [PMID: 27097913 PMCID: PMC4839023 DOI: 10.1186/s11671-016-1429-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Accepted: 04/08/2016] [Indexed: 06/05/2023]
Abstract
Highly powered electrostatic capacitors based on nanostructures with a high aspect ratio are becoming critical for advanced energy storage technology because of their high burst power and energy storage capability. We report the fabrication process and the electrical characteristics of high capacitance density capacitors with three-dimensional solid-state nanocapacitors based on a ZnO nanowire template. Stand-up ZnO nanowires are grown face down on p-type Si substrates coated with a ZnO seed layer using a hydrothermal method. Stacks of AlZnO/Al2O3/AlZnO are then deposited sequentially on the ZnO nanowires using atomic layer deposition. The fabricated capacitor has a high capacitance density up to 92 fF/μm(2) at 1 kHz (around ten times that of the planar capacitor without nanowires) and an extremely low leakage current density of 3.4 × 10(-8) A/cm(2) at 2 V for a 5-nm Al2O3 dielectric. Additionally, the charge-discharge characteristics of the capacitor were investigated, indicating that the resistance-capacitance time constants were 550 ns for both the charging and discharging processes and the time constant was not dependent on the voltage. This reflects good power characteristics of the fabricated capacitors. Therefore, the current work provides an exciting strategy to fabricate low-cost and easily processable, high capacitance density capacitors for energy storage.
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Affiliation(s)
- Lei Wei
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Qi-Xuan Liu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Bao Zhu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Wen-Jun Liu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Shi-Jin Ding
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China.
| | - Hong-Liang Lu
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - Anquan Jiang
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
| | - David Wei Zhang
- State Key Laboratory of ASIC and System, School of Microelectronics, Fudan University, Shanghai, 200433, People's Republic of China
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Sharma D, Sabela MI, Kanchi S, Mdluli PS, Singh G, Stenström TA, Bisetty K. Biosynthesis of ZnO nanoparticles using Jacaranda mimosifolia flowers extract: Synergistic antibacterial activity and molecular simulated facet specific adsorption studies. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 162:199-207. [DOI: 10.1016/j.jphotobiol.2016.06.043] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Revised: 06/22/2016] [Accepted: 06/23/2016] [Indexed: 11/17/2022]
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Ren X, Sangle A, Zhang S, Yuan S, Zhao Y, Shi L, Hoye RLZ, Cho S, Li D, MacManus-Driscoll JL. Photoelectrochemical water splitting strongly enhanced in fast-grown ZnO nanotree and nanocluster structures. JOURNAL OF MATERIALS CHEMISTRY. A 2016; 4:10203-10211. [PMID: 27774147 PMCID: PMC5059783 DOI: 10.1039/c6ta02788a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 05/31/2016] [Indexed: 05/31/2023]
Abstract
We demonstrate selective growth of ZnO branched nanostructures: from nanorod clusters (with branches parallel to parent rods) to nanotrees (with branches perpendicular to parent rods). The growth of these structures was realized using a three-step approach: electrodeposition of nanorods (NRs), followed by the sputtering of ZnO seed layers, followed by the growth of branched arms using hydrothermal growth. The density, size and direction of the branches were tailored by tuning the deposition parameters. To our knowledge, this is the first report of control of branch direction. The photoelectrochemical (PEC) performance of the ZnO nanostructures follows the order: nanotrees (NTs) > nanorod clusters (NCs) > parent NRs. The NT structure with the best PEC performance also possesses the shortest fabrication period which had never been reported before. The photocurrent of the NT and NC photoelectrodes is 0.67 and 0.56 mA cm-2 at 1 V vs. Ag/AgCl, respectively, an enhancement of 139% and 100% when compared to the ZnO NR structures. The key reason for the improved performance is shown to be the very large surface-to-volume ratios in the branched nanostructures, which gives rise to enhanced light absorption, improved charge transfer across the nanostructure/electrolyte interfaces to the electrolyte and efficient charge transport within the material.
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Affiliation(s)
- Xin Ren
- Research Center for Nanoscience and Technology , Shanghai University , 99 Shangda Road , Shanghai 200444 , China . ; ; Tel: +86 21 66137197
| | - Abhijeet Sangle
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , UK . ; ; Tel: +44 (0)1223334468
| | - Siyuan Zhang
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , UK . ; ; Tel: +44 (0)1223334468
| | - Shuai Yuan
- Research Center for Nanoscience and Technology , Shanghai University , 99 Shangda Road , Shanghai 200444 , China . ; ; Tel: +86 21 66137197
| | - Yin Zhao
- Research Center for Nanoscience and Technology , Shanghai University , 99 Shangda Road , Shanghai 200444 , China . ; ; Tel: +86 21 66137197
| | - Liyi Shi
- Research Center for Nanoscience and Technology , Shanghai University , 99 Shangda Road , Shanghai 200444 , China . ; ; Tel: +86 21 66137197
| | - Robert L Z Hoye
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , UK . ; ; Tel: +44 (0)1223334468
| | - Seungho Cho
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , UK . ; ; Tel: +44 (0)1223334468
| | - Dongdong Li
- Shanghai Advanced Research Institute , Chinese Academy of Sciences , 99 Haike Road, Zhangjiang Hi-Tech Park , Shanghai 201210 , China
| | - Judith L MacManus-Driscoll
- Department of Materials Science and Metallurgy , University of Cambridge , 27 Charles Babbage Road , Cambridge CB3 0FS , UK . ; ; Tel: +44 (0)1223334468
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Manthina V, Agrios AG. Single-pot ZnO nanostructure synthesis by chemical bath deposition and their applications. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.nanoso.2016.03.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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50
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Li M, Zhao R, Su Y, Yang Z, Zhang Y. Carbon quantum dots decorated Cu2S nanowire arrays for enhanced photoelectrochemical performance. NANOSCALE 2016; 8:8559-8567. [PMID: 26693806 DOI: 10.1039/c5nr06908d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The photoelectrochemical (PEC) performance of Cu2S nanowire arrays (NWAs) has been demonstrated to be greatly enhanced by dipping-assembly of carbon quantum dots (CQDs) on the surfaces of Cu2S NWAs. Experimental results show that the pristine Cu2S NWAs with higher aspect ratios exhibit better PEC performance due to the longer length scale for light absorption and the shorter length scale for minority carrier diffusion. Importantly, the CQDs decorated Cu2S NWAs exhibit remarkably enhanced photocurrent density, giving a photocurrent density of 1.05 mA cm(-2) at 0 V vs. NHE and an optimal photocathode efficiency of 0.148% under illumination of AM 1.5G (100 mW cm(-2)), which is 4 times higher than that of the pristine Cu2S NWAs. This can be attributed to the improved electron transfer and the energy-down-shift effect of CQDs. We believe that this inexpensive Cu2S/CQD photocathode with increased photocurrent density opens up new opportunities in PEC water splitting.
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Affiliation(s)
- Ming Li
- Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Department of Micro/Nano Electronics, School of Electronics, Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, PR China.
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