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Zhu J, Zi S, Zhang N, Hu Y, An L, Xi P. Surface Reconstruction of Covellite CuS Nanocrystals for Enhanced OER Catalytic Performance in Alkaline Solution. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2301762. [PMID: 37150854 DOI: 10.1002/smll.202301762] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 04/05/2023] [Indexed: 05/09/2023]
Abstract
Oxygen evolution reaction (OER) is one of the important half-reactions in energy conversion equipment such as water-spitting devices, rechargeable metal-air batteries, and so on. It is beneficial to develop efficient and low-cost catalysts that understand the reaction mechanism of OER and analyze the reconstruction phenomenon of transition metal sulfide. Interestingly, copper sulfide and cuprous sulfide with the same components possess different reconstruction behaviors due to their different metal ion valence states and different atomic arrangement modes. Because of a unique atomic arrangement sequence and certain cationic defects, the reconstruction phenomenon of CuS nanomaterials are that S2- is firstly oxidized to SO4 2- and then Cux + is converted into CuO via Cu(OH)2 . In addition, the specific "modified hourglass structure" of CuS with excellent conductivity is easier to produce intermediates. Compared with Cu2 S, CuS exhibits excellent OER activity with a lower overpotential of 192 mV at 10 mA cm-2 and remarkable electrochemical stability in 1.0 m KOH for 120 h. Herein, this study elucidates the reconstruction modes of CuS and Cu2 S in the OER process and reveals that CuS has a stronger CuS bond and a faster electronic transmission efficiency due to "modified hourglass structure," resulting in faster reconstruction of CuS than Cu2 S.
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Affiliation(s)
- Jiamin Zhu
- State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Shengjie Zi
- State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Nan Zhang
- State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yang Hu
- State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Li An
- State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Pinxian Xi
- State Key Laboratory of Applied Organic Chemistry, Frontiers Science Center for Rare Isotopes, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
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Kumar Tiwari C, Roy S, Tubul-Sterin T, Baranov M, Leffler N, Li M, Yin P, Neyman A, Weinstock IA. Emergence of Visible-Light Water Oxidation Upon Hexaniobate-Ligand Entrapment of Quantum-Confined Copper-Oxide Cores. Angew Chem Int Ed Engl 2023; 62:e202213762. [PMID: 36580402 DOI: 10.1002/anie.202213762] [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: 09/19/2022] [Revised: 12/22/2022] [Accepted: 12/23/2022] [Indexed: 12/30/2022]
Abstract
The formation of small 1 to 3 nm organic-ligand free metal-oxide nanocrystals (NCs) is essential to utilization of their attractive size-dependent properties in electronic devices and catalysis. We now report that hexaniobate cluster-anions, [Nb6 O19 ]8- , can arrest the growth of metal-oxide NCs and stabilize them as water-soluble complexes. This is exemplified by formation of hexaniobate-complexed 2.4-nm monoclinic-phase CuO NCs (1), whose ca. 350 Cu-atom cores feature quantum-confinement effects that impart an unprecedented ability to catalyze visible-light water oxidation with no added photosensitizers or applied potentials, and at rates exceeding those of hematite NCs. The findings point to polyoxoniobate-ligand entrapment as a potentially general method for harnessing the size-dependent properties of very small semiconductor NCs as the cores of versatile, entirely-inorganic complexes.
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Affiliation(s)
- Chandan Kumar Tiwari
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
| | - Shubasis Roy
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
| | - Tal Tubul-Sterin
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
| | - Mark Baranov
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
| | - Nitai Leffler
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
| | - Mu Li
- South China Advanced Institute for Soft Matter Science and Technology & State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China
| | - Panchao Yin
- South China Advanced Institute for Soft Matter Science and Technology & State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, China
| | - Alevtina Neyman
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
| | - Ira A Weinstock
- Department of Chemistry and the Ilse Katz Institute for Nanoscale Science & Technology, Ben-Gurion University of the Negev, Beer Sheva, 84105, Israel
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Li S, Mo QL, Xiao Y, Xiao FX. Maneuvering cuprous oxide-based photocathodes for solar-to-fuel conversion. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Fang Y, Hou Y, Fu X, Wang X. Semiconducting Polymers for Oxygen Evolution Reaction under Light Illumination. Chem Rev 2022; 122:4204-4256. [PMID: 35025505 DOI: 10.1021/acs.chemrev.1c00686] [Citation(s) in RCA: 80] [Impact Index Per Article: 40.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Sunlight-driven water splitting to produce hydrogen fuel has stimulated intensive scientific interest, as this technology has the potential to revolutionize fossil fuel-based energy systems in modern society. The oxygen evolution reaction (OER) determines the performance of overall water splitting owing to its sluggish kinetics with multielectron transfer processing. Polymeric photocatalysts have recently been developed for the OER, and substantial progress has been realized in this emerging research field. In this Review, the focus is on the photocatalytic technologies and materials of polymeric photocatalysts for the OER. Two practical systems, namely, particle suspension systems and film-based photoelectrochemical systems, form two main sections. The concept is reviewed in terms of thermodynamics and kinetics, and polymeric photocatalysts are discussed based on three key characteristics, namely, light absorption, charge separation and transfer, and surface oxidation reactions. A satisfactory OER performance by polymeric photocatalysts will eventually offer a platform to achieve overall water splitting and other advanced applications in a cost-effective, sustainable, and renewable manner using solar energy.
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Affiliation(s)
- Yuanxing Fang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Yidong Hou
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Xianzhi Fu
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
| | - Xinchen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350116, P. R. China
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Lee SA, Yang JW, Choi S, Jang HW. Nanoscale electrodeposition: Dimension control and 3D conformality. EXPLORATION 2021; 1. [PMCID: PMC10191033 DOI: 10.1002/exp.20210012] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 09/23/2021] [Indexed: 06/15/2023]
Affiliation(s)
- Sol A Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea
| | - Jin Wook Yang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea
| | - Sungkyun Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials Seoul National University Seoul 08826 Republic of Korea
- Advanced Institute of Convergence Technology Seoul National University Suwon 16229 Republic of Korea
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Nguyen TKN, Bourgès C, Naka T, Grasset F, Dumait N, Cordier S, Mori T, Ohashi N, Uchikoshi T. Synthesis of novel hexamolybdenum cluster-functionalized copper hydroxide nanocomposites and its catalytic activity for organic molecule degradation. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2021; 22:758-771. [PMID: 34566493 PMCID: PMC8463035 DOI: 10.1080/14686996.2021.1961559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 07/08/2021] [Accepted: 07/18/2021] [Indexed: 06/01/2023]
Abstract
A novel heterogeneous catalytic nanomaterial based on a molybdenum cluster-based halide (MC) and a single-layered copper hydroxynitrate (CHN) was first prepared by colloidal processing under ambient conditions. The results of the elemental composition and crystalline pattern indicated that CHN was comprehensively synthesized with the support of the MC compound. The absorbing characteristic in the ultraviolet and near-infrared regions was promoted by both of the ingredients. The proper chemical interaction between the materials is a crucial reason to modify the structure of the MCs and only a small decrease in the magnetic susceptibility of CHN. The heterogeneous catalytic activity of the obtained MC@CHN material was found to have a high efficiency and excellent reuse when it is activated by hydrogen peroxide (H2O2) for the degrading reaction of the organic pollutant at room temperature. A reasonable catalytic mechanism was proposed to explain the distinct role of the copper compound, Mo6 compound, and H2O2 in the production of the radical hydroxyl ion. This novel nanomaterial will be an environmentally promising candidate for dye removal.
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Affiliation(s)
- Thi Kim Ngan Nguyen
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), Ibaraki, Japan
- Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Ibaraki, Japan
| | - Cédric Bourgès
- WPI International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Takashi Naka
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), Ibaraki, Japan
| | - Fabien Grasset
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), Ibaraki, Japan
- Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Ibaraki, Japan
| | - Noée Dumait
- University Rennes-CNRS, UMR6226, Institut des Sciences Chimiques de Rennes (ISCR), Rennes, France
| | - Stéphane Cordier
- University Rennes-CNRS, UMR6226, Institut des Sciences Chimiques de Rennes (ISCR), Rennes, France
| | - Takao Mori
- WPI International Center for Materials Nanoarchitechtonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Japan
| | - Naoki Ohashi
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), Ibaraki, Japan
- Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Ibaraki, Japan
| | - Tetsuo Uchikoshi
- Research Center for Functional Materials, National Institute for Materials Science (NIMS), Ibaraki, Japan
- Laboratory for Innovative Key Materials and Structures (LINK), National Institute for Materials Science (NIMS), Ibaraki, Japan
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Rapid removal of organic pollutants by a novel persulfate/brochantite system: Mechanism and implication. J Colloid Interface Sci 2020; 585:400-407. [PMID: 33307308 DOI: 10.1016/j.jcis.2020.11.106] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2020] [Revised: 11/07/2020] [Accepted: 11/26/2020] [Indexed: 01/28/2023]
Abstract
Using natural minerals as persulfate activators can develop effective and economical in situ chemical oxidation technology for environmental remediation. Yet, few natural minerals can provide a high activation efficiency. Here, we demonstrate that brochantite (Cu4SO4(OH)6), a natural mineral, can be used as a persulfate activator for the rapid degradation of tetracycline hydrochloride (TC-H). Approximately 70% of TC-H was removed in Cu4SO4(OH)6/PDS within 5 min, which much higher than that of Cu3P (61.99%), CuO (29.75%), CNT (25.83%), Fe2O3, (14.48%) and MnO2 (9.76%). Experiments and theoretical calculations suggested that surface copper acts as active sites induce the production of free radicals. The synergistic effect of Cu/S promotes the cycle between Cu+/Cu2+. Sulfate radicals and hydroxyl radicals are the main reactive oxygen species that are responsible for the rapid removal of TC-H. The findings of this work show a novel persulfate/brochantite system and provide useful information for the environmental remediation.
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Zheng Q, Wei Y, Zeng X, Xia W, Lu Q, Sun J, Li Z, Fang W. Effect of bandgap alignment on the photoreduction of CO 2 into methane based on Cu 2O-decorated CuO microspheres. NANOTECHNOLOGY 2020; 31:425402. [PMID: 32575093 DOI: 10.1088/1361-6528/ab9f74] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Semiconductors' band gap alignment is important for the photoreduction of CO2 to methane. In the paper, two kinds of Cu2O-decorated CuO microspheres composed with nanoflakes were prepared by using two different methods. Their electron behaviors were studied from the XPS spectra and photoelectrochemical measurements. Both samples are p-type CuO covered with an amount of Cu2O nanoparticles on their surface. Combined with their bandgaps and flat band potentials, CuO-Mic has a well-matched bandgap alignment between Cu2O and CuO, which is favorable for the separation of photogenerated electron-hole pairs. Those photogenerated carriers are beneficial for the conversion of CO2 to CH4, as an 8-electron process for the conversion of CO2 to CH4 will consume more photogenerated electrons for the chemical reactions than that of the 2-electron process for CO2 reduction to CO. Therefore, CuO-Mic has much better photocatalytic activity for CO2 reduction to CH4 with a CH4 yield ten times higher than that of CuO-Hyd under a visible light irradiation, the CO yields of the CO2 reduction are identical.
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Affiliation(s)
- Qian Zheng
- College of Physics Science and Technology & Institute of Optoelectronic Technology, Yangzhou University, Yangzhou 225002, People's Republic of China
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Vo TG, Chang SJ, Chiang CY. Anion-induced morphological regulation of cupric oxide nanostructures and their application as co-catalysts for solar water splitting. Dalton Trans 2020; 49:1765-1775. [PMID: 32016198 DOI: 10.1039/c9dt04626g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Morphological control of nanomaterials is essential for their properties and potential applications, and many strategies have been developed. In this work, a new strategy for simultaneously preparing and modulating the morphological structure evolution of copper layered hydroxyl salts and oxides is introduced. By changing the nature of the anions in the electroplating solution, significant variations in the size and porosity of nanosheets are achieved. Porous CuO nanosheets with a higher surface area were obtained by the use of copper nitrate as a copper source, while CuO nanoflakes were produced from copper sulfate. Photoanodes combining these porous CuO nanomaterials and a typical light absorber (BiVO4) exhibited good morphology-dependent activities for photoelectrochemical water splitting. The composite electrode displays a negative shift of 180 mV for the onset potential and an approximately 2-fold enhancement in the photocurrent compared to the bare BiVO4. The charge recombination rate in the photoelectrode with the porous CuO nanosheets was significantly lower than the bare photoanode due to the favorable electron diffusion path and effective charge collection. This research offers an effective method for constructing a highly active photoelectrocatalytic system for overall water splitting.
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Affiliation(s)
- Truong-Giang Vo
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei-106, Taiwan.
| | - Shu-Ju Chang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei-106, Taiwan.
| | - Chia-Ying Chiang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei-106, Taiwan.
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Lumley MA, Radmilovic A, Jang YJ, Lindberg AE, Choi KS. Perspectives on the Development of Oxide-Based Photocathodes for Solar Fuel Production. J Am Chem Soc 2019; 141:18358-18369. [PMID: 31693356 DOI: 10.1021/jacs.9b07976] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Photoelectrochemical cells (PECs), which use semiconductor electrodes (photoelectrodes) to absorb solar energy and perform chemical reactions, constitute one of the most attractive strategies to produce chemical fuels using renewable energy sources. Oxide-based photoelectrodes specifically have been intensively investigated for the construction of PECs due to their relatively inexpensive processing costs and better stability in aqueous media compared with other types of photoelectrodes. Although there have been many advancements in the development of oxide-based photoanodes, our understanding of oxide-based photocathodes remains limited. The goal of this Perspective is to examine the recent progress made in the field of oxide-based photocathodes and discuss future research directions. The photocathode systems considered here include binary and ternary Cu-based photocathodes and ternary Fe-based photocathodes. We assessed the characteristics and major advantages and drawbacks of each system and identified the most critical research gaps. The insights and discussions provided in this Perspective will serve as useful resources for the design of future studies, leading to the development of more efficient and practical PECs.
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Affiliation(s)
- Margaret A Lumley
- Department of Chemistry , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Andjela Radmilovic
- Department of Chemistry , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Youn Jeong Jang
- Department of Chemistry , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Ann E Lindberg
- Department of Chemistry , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
| | - Kyoung-Shin Choi
- Department of Chemistry , University of Wisconsin-Madison , Madison , Wisconsin 53706 , United States
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12
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Ugwuja CG, Adelowo OO, Ogunlaja A, Omorogie MO, Olukanni OD, Ikhimiukor OO, Iermak I, Kolawole GA, Guenter C, Taubert A, Bodede O, Moodley R, Inada NM, de Camargo ASS, Unuabonah EI. Visible-Light-Mediated Photodynamic Water Disinfection @ Bimetallic-Doped Hybrid Clay Nanocomposites. ACS APPLIED MATERIALS & INTERFACES 2019; 11:25483-25494. [PMID: 31268651 DOI: 10.1021/acsami.9b01212] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
This study reports a new class of photocatalytic hybrid clay nanocomposites prepared from low-cost sources (kaolinite clay and Carica papaya seeds) doped with Zn and Cu salts via a solvothermal process. X-ray diffraction analysis suggests that Cu-doping and Cu/Zn-doping introduce new phases into the crystalline structure of Kaolinite clay, which is linked to the reduced band gap of kaolinite from typically between 4.9 and 8.2 eV to 2.69 eV for Cu-doped and 1.5 eV for Cu/Zn hybrid clay nanocomposites (Nisar, J.; Århammar, C.; Jämstorp, E.; Ahuja, R. Phys. Rev. B 2011, 84, 075120). In the presence of solar light irradiation, Cu- and Cu/Zn-doped nanocomposites facilitate the electron-hole pair separation. This promotes the generation of singlet oxygen which in turn improves the water disinfection efficiencies of these novel nanocomposite materials. The nanocomposite materials were further characterized using high-resolution scanning electron microscopy, fluorimetry, thermogravimetric analysis, and Raman spectroscopy. The breakthrough times of the nanocomposites for a fixed bed mode of disinfection of water contaminated with 2.32 × 107 cfu/mL E. coli ATCC 25922 under solar light irradiation are 25 h for Zn-doped, 30 h for Cu-doped, and 35 h for Cu/Zn-doped nanocomposites. In the presence of multidrug and multimetal resistant strains of E. coli, the breakthrough time decreases significantly. Zn-only doped nanocomposites are not photocatalytically active. In the absence of light, the nanocomposites are still effective in decontaminating water, although less efficient than under solar light irradiation. Electrostatic interaction, metal toxicity, and release of singlet oxygen (only in the Cu-doped and Cu/Zn-doped nanocomposites) are the three disinfection mechanisms by which these nanocomposites disinfect water. A regrowth study indicates the absence of any living E. coli cells in treated water even after 4 days. These data and the long hydraulic times (under gravity) exhibited by these nanocomposites during photodisinfection of water indicate an unusually high potential of these nanocomposites as efficient, affordable, and sustainable point-of-use systems for the disinfection of water in developing countries.
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Affiliation(s)
| | - Olawale O Adelowo
- Department of Microbiology , University of Ibadan , PMB 5116 , Ibadan , Oyo State 200284 , Nigeria
| | | | | | | | - Odion O Ikhimiukor
- Department of Microbiology , University of Ibadan , PMB 5116 , Ibadan , Oyo State 200284 , Nigeria
| | - Ievgeniia Iermak
- São Carlos Institute of Physics , University of São Paulo , Avenida Trabalhador Sãocarlense 400 , São Carlos 13566-590 , Brazil
| | - Gabriel A Kolawole
- Department of Chemistry , University of Zululand , Kwadlangezwa , 3886 , Republic of South Africa
| | | | | | - Olusola Bodede
- School of Chemistry and Physics , University of KwaZulu-Natal , Westville Campus , Durban , 3630 , South Africa
| | - Roshila Moodley
- School of Chemistry and Physics , University of KwaZulu-Natal , Westville Campus , Durban , 3630 , South Africa
| | - Natalia M Inada
- São Carlos Institute of Physics , University of São Paulo , Avenida Trabalhador Sãocarlense 400 , São Carlos 13566-590 , Brazil
| | - Andrea S S de Camargo
- São Carlos Institute of Physics , University of São Paulo , Avenida Trabalhador Sãocarlense 400 , São Carlos 13566-590 , Brazil
| | - Emmanuel I Unuabonah
- São Carlos Institute of Physics , University of São Paulo , Avenida Trabalhador Sãocarlense 400 , São Carlos 13566-590 , Brazil
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Basu M. Porous Cupric Oxide: Efficient Photocathode for Photoelectrochemical Water Splitting. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900103] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Mrinmoyee Basu
- Department of ChemistryBITS Pilani, Pilani Campus Rajasthan- 333031 India
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Jang YJ, Lee JS. Photoelectrochemical Water Splitting with p-Type Metal Oxide Semiconductor Photocathodes. CHEMSUSCHEM 2019; 12:1835-1845. [PMID: 30614648 DOI: 10.1002/cssc.201802596] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2018] [Revised: 12/24/2018] [Indexed: 06/09/2023]
Abstract
Photoelectrochemical (PEC) water splitting is a promising way to produce clean and sustainable hydrogen fuel. Solar hydrogen production by using p-type metal oxide semiconductor photocathodes has not been studied as extensively as that with n-type metal oxide semiconductor photoanodes and p-type photovoltaic-grade non-oxide semiconductor photocathodes. Copper-based oxide photocathodes show relatively good conductivity, but suffer from instability in aqueous solution under illumination, whereas iron-based metal oxide photocathodes demonstrate more stable PEC performance but have problems in charge separation and transport. Herein, an overview of recent progress in p-type metal oxide-based photocathodes for PEC water reduction is provided. Although these materials have not been fully developed to reach their potential performance, the challenges involved have been identified and strategies to overcome these limitations have been proposed. Future research in this field should address these issues and challenges in addition to the discovery of new materials.
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Affiliation(s)
- Youn Jeong Jang
- Department of Energy Engineering, School of Energy & Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea
| | - Jae Sung Lee
- Department of Energy Engineering, School of Energy & Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan, 44919, South Korea
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Lee DK, Lee D, Lumley MA, Choi KS. Progress on ternary oxide-based photoanodes for use in photoelectrochemical cells for solar water splitting. Chem Soc Rev 2019; 48:2126-2157. [PMID: 30499570 DOI: 10.1039/c8cs00761f] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Solar water splitting using photoelectrochemical cells (PECs) has emerged as one of the most promising routes to produce hydrogen as a clean and renewable fuel source. Among various semiconductors that have been considered as photoelectrodes for use in PECs, oxide-based photoanodes are particularly attractive because of their stability in aqueous media in addition to inexpensive and facile processing compared to other types of semiconductors. However, they typically suffer from poor charge carrier separation and transport. In the past few years, there has been tremendous progress in developing ternary oxide-based photoelectrodes, specifically, photoanodes. The use of ternary oxides provides more opportunities to tune the composition and electronic structure of the photoelectrode compared to binary oxides, thus providing more freedom to tune the photoelectrochemical properties. In this article, we outline the important characteristics to analyze when evaluating photoanodes and review the major recent progress made on the development of ternary oxide-based photoanodes. For each system, we highlight the favorable and unfavorable features and summarize the strategies utilized to address the challenges associated with each material. Finally, by combining our analyses of all the photoanodes surveyed in this review, we provide possible future research directions for each compound and an outlook for constructing more efficient oxide-based PECs. Overall, this review will provide a critical overview of current ternary oxide-based photoanodes and will serve as a platform for the design of future oxide-based PECs.
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Affiliation(s)
- Dong Ki Lee
- Department of Chemistry, University of Wisconsin-Madison, Madison, WI 53706, USA.
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Xia W, Luo M, Zeng X, Yang J, Dong J, Xu Q, Zhang Z. Different Annealing Atmosphere Gases on the Growth and Photocurrent Performance of CuO Films Grown on FTO Substrate. ACS OMEGA 2018; 3:11354-11361. [PMID: 31459243 PMCID: PMC6645067 DOI: 10.1021/acsomega.8b01529] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/10/2018] [Indexed: 06/10/2023]
Abstract
Improvement in photocurrent performance remains the key subject to prepare a stable and efficient photocathode in photoelectrochemical cell (PEC) water splitting. Different to the ordinary methods, various annealing atmosphere gases were used to study the growth of CuO films on fluorine-doped tin oxide substrate; then, the photocurrent performance was studied when those CuO films were used as photocathodes in PEC. The scanning electron microscopy images indicate that all of the CuO films are composed of vertically arrayed CuO nanosheets, each individual nanosheet with a thickness of 100-500 nm. Those hierarchical CuO photoelectrodes in the PEC exhibit quite different photoelectrochemical activities in visible light, where the air-annealed CuO film has nearly 6 times enhancement in photocurrent (108 μA) at 0 V compared to that of film under oxygen atmosphere, and 34 times of argon. It has an acceptor concentration of 2.9 × 1021 cm-3 from Mott-Schottky analysis, which is more than 2 times larger than that of the oxygen-annealed CuO film, and 37 times larger than that of the argon-annealed film. Ultraviolet photoelectron spectroscopy measurements were carried out to explain the improved photocurrent performance of the air-annealed CuO films, where the obtained valence band of 0.44 eV and work function of 4.92 eV well match the reduction reaction of electrolyte (H2O).
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Affiliation(s)
- Weiwei Xia
- College
of Physics Science and Technology & Institute of Optoelectronic
Technology and College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Min Luo
- College
of Physics Science and Technology & Institute of Optoelectronic
Technology and College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Xianghua Zeng
- College
of Physics Science and Technology & Institute of Optoelectronic
Technology and College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Jinpeng Yang
- College
of Physics Science and Technology & Institute of Optoelectronic
Technology and College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Jing Dong
- College
of Physics Science and Technology & Institute of Optoelectronic
Technology and College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Qin Xu
- College
of Physics Science and Technology & Institute of Optoelectronic
Technology and College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
| | - Zhenxin Zhang
- College
of Physics Science and Technology & Institute of Optoelectronic
Technology and College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, P. R. China
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