1
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Chiu YH, Chung RJ, Kongvarhodom C, Saukani M, Yougbaré S, Chen HM, Wu YF, Lin LY. Facile Combination of Bismuth Vanadate with Nickel Tellurium Oxide for Efficient Photoelectrochemical Catalysis of Water Oxidation Reactions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:49249-49261. [PMID: 39235429 PMCID: PMC11420875 DOI: 10.1021/acsami.4c07117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 08/02/2024] [Accepted: 08/06/2024] [Indexed: 09/06/2024]
Abstract
Bismuth vanadate (BVO) having suitable band edges is one of the effective photocatalysts for water oxidation, which is the rate-determining step in the water splitting process. Incorporating cocatalysts can reduce activation energy, create hole sinks, and improve photocatalytic ability of BVO. In this work, the visible light active nickel tellurium oxide (NTO) is used as the cocatalyst on the BVO photoanode to improve photocatalytic properties. Different NTO amounts are deposited on the BVO to balance optical and electrical contributions. Higher visible light absorbance and effective charge cascades are developed in the NTO and BVO composite (NTO/BVO). The highest photocurrent density of 6.05 mA/cm2 at 1.23 V versus reversible hydrogen electrode (VRHE) and the largest applied bias photon-to-current efficiency (ABPE) of 2.13% are achieved for NTO/BVO, while BVO shows a photocurrent density of 4.19 mA/cm2 at 1.23 VRHE and ABPE of 1.54%. Excellent long-term stability under light illumination is obtained for NTO/BVO with photocurrent retention of 91.31% after 10,000 s. The photoelectrochemical catalytic mechanism of NTO/BVO is also proposed based on measured band structures and possible interactions between NTO and BVO. This work has depicted a novel cocatalytic BVO system with a new photocharging material and successfully achieves high photocurrent densities for catalyzing water oxidation.
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Affiliation(s)
- Yu-Hsuan Chiu
- Department
of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Ren-Jei Chung
- Department
of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan
| | - Chutima Kongvarhodom
- Department
of Chemical Engineering, King Mongkut’s
University of Technology Thonburi, 126 Pracha-u-thit, Toong-kru, Bangkok 10140, Thailand
- Department
of Chemical Engineering, University of New
Brunswick, Fredericton, New Brunswick E3B5A3, Canada
| | - Muhammad Saukani
- Department
of Mechanical Engineering, Faculty of Engineering, Universitas Islam Kalimantan MAB, Jl. Adhyaksa No. 2, Banjarmasin 70124, Indonesia
| | - Sibidou Yougbaré
- Institut
de Recherche en Sciences de la Santé (IRSS-DRCO)/Nanoro, Ouagadougou 03 7192-03, Burkina Faso
| | - Hung-Ming Chen
- Gingen Technology
Co., LTD., Rm. 7, 10F.,
No. 189, Sec. 2, Keelung Road, Xinyi District, Taipei 11054, Taiwan
| | - Yung-Fu Wu
- Department
of Chemical Engineering, Ming Chi University
of Technology, New Taipei
City 24301, Taiwan
| | - Lu-Yin Lin
- Department
of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 10608, Taiwan
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2
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Ashok Patil S, Jagdale PB, Barman N, Iqbal A, Sfeir A, Royer S, Thapa R, Kumar Samal A, Saxena M. Ultrathin, large area β-Ni(OH) 2 crystalline nanosheet as bifunctional electrode material for charge storage and oxygen evolution reaction. J Colloid Interface Sci 2024; 674:587-602. [PMID: 38945026 DOI: 10.1016/j.jcis.2024.06.167] [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: 05/02/2024] [Revised: 06/19/2024] [Accepted: 06/23/2024] [Indexed: 07/02/2024]
Abstract
Bifunctional electrode materials are highly desirable for meeting increasing global energy demands and mitigating environmental impact. However, improving the atom-efficiency, scalability, and cost-effectiveness of storage systems, as well as optimizing conversion processes to enhance overall energy utilization and sustainability, remains a significant challenge for their application. Herein, we devised an optimized, facile, economic, and scalable synthesis of large area (cm2), ultrathin (∼2.9 ± 0.3 nm) electroactive nanosheet of β-Ni(OH)2, which acted as bifunctional electrode material for charge storage and oxygen evolution reaction (OER). The β-Ni(OH)2 nanosheet electrode shows the volumetric capacity of 2.82 Ah.cm-3(0.82 µAh.cm-2) at the current density of 0.2 mA.cm-2. The device shows a high capacity of 820 mAh.cm-3 with an ultrahigh volumetric energy density of 0.33 Wh.cm-3 at 275.86 W.cm-3 along with promising stability (30,000 cycles). Furthermore, the OER activity of ultrathin β-Ni(OH)2 exhibits an overpotential (η10) of 308 mV and a Tafel value of 42 mV dec-1 suggesting fast reaction kinetics. The mechanistic studies are enlightened through density functional theory (DFT), which reveals that additional electronic states near the Fermi level enhance activity for both capacitance and OER.
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Affiliation(s)
- Sayali Ashok Patil
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Ramanagara, Bangalore 562112, India
| | - Pallavi B Jagdale
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Ramanagara, Bangalore 562112, India
| | - Narad Barman
- Department of Physics, SRM University -AP, Andhra Pradesh 522 240, India
| | - Asif Iqbal
- Department of Physics, SRM University -AP, Andhra Pradesh 522 240, India
| | - Amanda Sfeir
- Université de Lille, CNRS, Centrale Lille, Université Artois, UMR 8181─UCCS─12 Unité de Catalyse et Chimie du Solide, Lille 59000, France
| | - Sébastien Royer
- Université de Lille, CNRS, Centrale Lille, Université Artois, UMR 8181─UCCS─12 Unité de Catalyse et Chimie du Solide, Lille 59000, France
| | - Ranjit Thapa
- Department of Physics, SRM University -AP, Andhra Pradesh 522 240, India
| | - Akshaya Kumar Samal
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Ramanagara, Bangalore 562112, India
| | - Manav Saxena
- Centre for Nano and Material Sciences, Jain (Deemed-to-be University), Jain Global Campus, Ramanagara, Bangalore 562112, India.
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3
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Ping L, Minarik GE, Gao H, Cao J, Li T, Kitadai H, Ling X. Synthesis of 2D layered transition metal (Ni, Co) hydroxides via edge-on condensation. Sci Rep 2024; 14:3817. [PMID: 38361022 PMCID: PMC10869340 DOI: 10.1038/s41598-024-53969-2] [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: 09/25/2023] [Accepted: 02/07/2024] [Indexed: 02/17/2024] Open
Abstract
Layered transition metal hydroxides (LTMHs) with transition metal centers sandwiched between layers of coordinating hydroxide anions have attracted considerable interest for their potential in developing clean energy sources and storage technologies. However, two-dimensional (2D) LTMHs remain largely understudied in terms of physical properties and applications in electronic devices. Here, for the first time we report > 20 μm α-Ni(OH)2 2D crystals, synthesized from hydrothermal reaction. And an edge-on condensation mechanism assisted with the crystal field geometry is proposed to understand the 2D intra-planar growth of the crystals, which is also testified through series of systematic comparative studies. We also report the successful synthesis of 2D Co(OH)2 crystals (> 40 μm) with more irregular shape due to the slightly distorted octahedral geometry of the crystal field. Moreover, the detailed structural characterization of synthesized α-Ni(OH)2 are performed. The optical band gap energy is extrapolated as 2.54 eV from optical absorption measurements and the electronic bandgap is measured as 2.52 eV from reflected electrons energy loss spectroscopy (REELS). We further demonstrate its potential as a wide bandgap (WBG) semiconductor for high voltage operation in 2D electronics with a high breakdown strength, 4.77 MV/cm with 4.9 nm thickness. The successful realization of the 2D LTMHs opens the door for future exploration of more fundamental physical properties and device applications.
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Affiliation(s)
- Lu Ping
- Division of Materials Science and Engineering, Boston University, 15 St. Mary's Street, Boston, MA, 02215, USA
| | - Gillian E Minarik
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA
| | - Hongze Gao
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA
| | - Jun Cao
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA
| | - Tianshu Li
- Division of Materials Science and Engineering, Boston University, 15 St. Mary's Street, Boston, MA, 02215, USA
| | - Hikari Kitadai
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA
| | - Xi Ling
- Division of Materials Science and Engineering, Boston University, 15 St. Mary's Street, Boston, MA, 02215, USA.
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA.
- The Photonics Center, Boston University, 8 St. Mary's Street, Boston, MA, 02215, USA.
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4
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Meng Y, Zhao Q, Liu Z. The Dual-Function of GSH for Enhancing the CdS PEC Performance via Constructing Inorganic–Organic Hybrid Heterojunction and Organic Cocatalyst. Catal Letters 2022. [DOI: 10.1007/s10562-022-04180-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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5
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Wang Y, Chen X, Xiu H, Zhuang H, Li J, Zhou Y, Liu D, Kuang Y. General In Situ Photoactivation Route with IPCE over 80% toward CdS Photoanodes for Photoelectrochemical Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2104307. [PMID: 34725925 DOI: 10.1002/smll.202104307] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/14/2021] [Indexed: 06/13/2023]
Abstract
Cost-effective photoanodes with remarkable electronic properties are highly demanded for practical photoelectrochemical (PEC) water splitting. The ability to manipulate the surface carrier separation and recombination is pivotal for achieving high PEC performance for water splitting. Here, a facile and economical approach is reported for substantially improving the surface charge separation property of CdS photoanodes through in situ photoactivation, which significantly reduces surface charge recombination through the formation of thiosulfate ion which is favorable to the transfer of photogenerated holes and a uniform nanoporous morphology via the dissolving Cd2+ with phosphate ions on the surface of CdS. The resulting CdS electrodes through scalable particle transfer method exhibit nearly tripled photocurrents, with an incident-photon-to-current conversion efficiency (IPCE) at 480 nm exceeding 80% at 0.6 V versus reversible hydrogen electrode (RHE). And the CdS thin films prepared from chemical bath deposition display quadrupled photocurrents after the stir and PEC activation, with an IPCE of 91.7% at 455 nm and 0.6 V versus RHE. With the suppression of photocorrosion in alkaline borate buffer, the activated photoanodes show great stability for solar hydrogen production at the sacrifice of sulfite. This work brings insights into the design of nanoporous metal sulfide semiconductors for solar water splitting.
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Affiliation(s)
- Ying Wang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
- Fujian Provincial Key Laboratory of Featured Biochemical and Chemical Materials, Ningde Normal University, Ningde, Fujian, 352100, China
| | - Xiuyu Chen
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
| | - Hao Xiu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
| | - Huanglong Zhuang
- Fujian Provincial Key Laboratory of Featured Biochemical and Chemical Materials, Ningde Normal University, Ningde, Fujian, 352100, China
- Fujian Province University Key Laboratory of Green Energy and Environment Catalysis, College of Chemistry and Materials, Ningde Normal University, Ningde, Fujian, 352100, China
| | - Jianming Li
- Petroleum Geology Research and Laboratory Center, Research Institute of Petroleum Exploration and Development (RIPED), PetroChina, Beijing, 100083, China
| | - Yang Zhou
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
| | - Deyu Liu
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
- University of Chinese Academy of Sciences, Beijing, 100000, China
| | - Yongbo Kuang
- Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang, 315201, China
- University of Chinese Academy of Sciences, Beijing, 100000, China
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6
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Pareek A, Borse PH. Hurdles and recent developments for CdS and chalcogenide‐based electrode in “Solar electro catalytic” hydrogen generation: A review. ELECTROCHEMICAL SCIENCE ADVANCES 2021. [DOI: 10.1002/elsa.202100114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Alka Pareek
- Center For Nanomaterials International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) Opp Balapur Village, Airport Road Hyderabad Telangana 500005 India
| | - Pramod H. Borse
- Center For Nanomaterials International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI) Opp Balapur Village, Airport Road Hyderabad Telangana 500005 India
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7
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Zhu M, Zhang G, Zhai L, Cao J, Li S, Zeng T. Polarization-enhanced photoelectrochemical properties of BaTiO 3/BaTiO 3-x/CdS heterostructure nanocubes. Dalton Trans 2021; 50:3137-3144. [PMID: 33634821 DOI: 10.1039/d1dt00103e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With the aim of improving the photocatalytic activity for water splitting, novel core-shell-structured crystalline-BaTiO3/amorphous-BaTiO3-x/crystalline-CdS composite nanocubes are prepared by a facile two-step synthesis approach. Basic characterization techniques such as X-ray diffraction, scanning electron microscopy, energy dispersive X-ray spectroscopy and transmission electron microscopy are carried out on the as-prepared composite nanocubes in order to confirm the quality of their crystal structure, morphology and chemical components correspondingly. UV-Vis-NIR measurements of the as-prepared composite nanocubes validate the presence of extended visible-light absorbance due to oxygen-deficient BaTiO3-x. Photoelectrochemical tests are carried out on the as-prepared nanocomposite films that are coated directly on indium tin oxide (ITO) glass substrates. The as-prepared composite nanocubes show a photocurrent density of 100 μA cm-2 without electric field poling, whereas they show about 200 μA cm-2 with an electric field poling of 18.8 kV cm-1. This study suggests that the photoelectrochemical performance is highest in our prepared BaTiO3/BaTiO3-x/CdS composite film compared to the pure BaTiO3, CdS and BaTiO3/BaTiO3-x films, and it may offer a new potential route for designing cost-effective, highly stable and efficient photocatalysts.
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Affiliation(s)
- Mingjun Zhu
- Shanghai Key Laboratory of Engineering Materials Application and Evaluation, Shanghai Research Institute of Materials, Shanghai 200437, P. R. China.
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8
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Kumar K, Paik P. Biomimicked and CPMV-Imprinted Hollow Porous Zinc Phosphate Nanocapsules and Their Therapeutic Efficiency. ACS APPLIED BIO MATERIALS 2020; 3:6005-6014. [PMID: 35021829 DOI: 10.1021/acsabm.0c00634] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Hollow zinc phosphate nanocapsules (hZPNCs) are an alloplastic biomaterial that has been synthesized to deliver chemotherapeutic drugs in a sustained manner. A very simple one-pot synthesis approach has been employed to synthesize hZPNCs by using cowpea mosaic virus (CPMV) in the presence of phosphate buffer (PBS) (0.01 M PBS, pH ∼7.2) with zinc acetate precursor. The synthesis mechanism of hZPNCs relies on the basis of biomineralization, where the precursor molecules initiate mineralization with the help of amino acid residues present on the CPMV capsid. The synthesized hollow nanocapsules were of diameter ∼50-60 nm and porous shell with thickness of ∼4 nm. The cavity performed as a reservoir for the anticancer drugs (DOX and IM). The release kinetic studies show the positive aspect of hZPNCs to be labeled as drug delivery cargo for sustained delivery. In vitro cytotoxic studies of hZPNCs and hZPNCs-chemo drugs on HEK293, HEPG2, and K562 cells were performed. The cytotoxic studies show that hZPNCs-DOX and hZPNCs-IM arrest the cell cycle of carcinoma cells (HEPG2 and K562 cells) at relatively low IC50 and that the inhibition efficiency is dosage dependent. Furthermore, through HRTEM, in vitro cellular interactions of carcinoma cells with hZPNCs and chemo drug-loaded hZPNCs were confirmed by the cryo-sectioning of cells before and after the incubation. These studies revealed the likely endocytic pathway for the nanocapsules entering the cell and executing the specific action of delivering the anticancer drugs. Together, these results reveal the hZPNCs as potential sustained drug delivery agents.
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Affiliation(s)
- Koushi Kumar
- Department of Biotechnology, Vel Tech Rangarajan Dr. Sagunthala R & D Institute of Science and Technology, Chennai 600062, India.,School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad 500046, India
| | - Pradip Paik
- School of Biomedical Engineering, Indian Institute of Technology (BHU), Varanasi 220 051, India.,School of Engineering Sciences and Technology, University of Hyderabad, Hyderabad 500046, India
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9
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Dom R, Govindarajan S, Joshi SV, Borse PH. A solar-responsive zinc oxide photoanode for solar-photon-harvester photoelectrochemical (PEC) cells. NANOSCALE ADVANCES 2020; 2:3350-3357. [PMID: 36134295 PMCID: PMC9417454 DOI: 10.1039/d0na00139b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 06/08/2020] [Indexed: 06/16/2023]
Abstract
A highly efficient, nanostructured, solar-responsive zinc-oxide (SRZO) photoanode has been achieved by utilization of a versatile solution precursor plasma spray (SPPS) deposition technique. For the first time, it is demonstrated that a front-illumination type SRZO photo-anode fabricated with a ZnO/stainless steel (SS-304) configuration can generate an enhanced photo-electrochemical (PEC) current of 390 μA cm-2, under solar radiation from a solar simulator with an AM1.5 global filter (∼1 sun). The SRZO electrode displayed a solar-to-hydrogen (STH) conversion efficiency of 2.32% when investigated for H2 evolution in a PEC cell. These electrodes exhibited a maximum peak efficiency of 86% using 320 nm photons during incident photon-to-current conversion efficiency measurement. Interestingly, the film lattice of SRZO showed a significant red-shift of 0.37 eV in the ZnO band gap thereby providing solar photon absorptivity to SRZO. Further, an enhanced charge transport property by virtue of increased donor density (∼4.11 × 1017 cm-3) has been observed, which is higher by an order of magnitude than that of its bulk counterpart. Efficient optical absorption of solar photons and higher donor-density of SRZO have been thus attributed to its superior PEC performance.
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Affiliation(s)
- Rekha Dom
- International Advanced Research Centre for Powder Metallurgy and New Materials Balapur PO Hyderabad Telangana 500 005 India
| | - Sivakumar Govindarajan
- International Advanced Research Centre for Powder Metallurgy and New Materials Balapur PO Hyderabad Telangana 500 005 India
| | - Shrikant V Joshi
- Department of Engineering Science, University West 46186 Trollhattan Sweden
| | - Pramod H Borse
- International Advanced Research Centre for Powder Metallurgy and New Materials Balapur PO Hyderabad Telangana 500 005 India
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10
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Zywitzki D, Taffa DH, Lamkowski L, Winter M, Rogalla D, Wark M, Devi A. Tuning Coordination Geometry of Nickel Ketoiminates and Its Influence on Thermal Characteristics for Chemical Vapor Deposition of Nanostructured NiO Electrocatalysts. Inorg Chem 2020; 59:10059-10070. [PMID: 32589409 DOI: 10.1021/acs.inorgchem.0c01204] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Nickel-based nanostructured materials have gained widespread attention, particularly for energy-related applications. Employing chemical vapor deposition (CVD) for NiO necessitates suitable nickel precursors that are volatile and stable. Herein, we report the synthesis and characterization of a series of new nickel β-ketoiminato complexes with different aliphatic and etheric side chain substitutions, namely, bis(4-(isopropylamino)-pent-3-en-2-onato)nickel(II) ([Ni(ipki)2], 1), bis(4-(2-methoxyethylamino)pent-3-en-2-onato)nickel(II) ([Ni(meki)2], 2), bis(4-(2-ethoxyethylamino)pent-3-en-2-onato)nickel(II) ([Ni(eeki)2], 3), bis(4-(3-methoxy-propylamino)-pent-3-en-2-onato)nickel(II) ([Ni(mpki)2], 4), and bis(4-(3-ethoxypropylamino)pent-3-en-2-onato)nickel(II) ([Ni(epki)2], 5). These compounds have been thoroughly characterized with regard to their purity and identity by means of nuclear magnetic resonance spectroscopy (NMR) and electron impact mass spectrometry (EI-MS). Contrary to other transition metal β-ketoiminates, the imino side chain strongly influences the structural geometry of the complexes, which was ascertained via single-crystal X-ray diffraction (XRD). As a result, the magnetic momenta of the molecules also differ significantly as evidenced by the magnetic susceptibility measurements employing Evan's NMR method in solution. Thermal analysis revealed the suitability of these compounds as new class of precursors for CVD of Ni containing materials. As a representative precursor, compound 2 was evaluated for the CVD of NiO thin films on Si(100) and conductive glass substrates. The as-deposited nanostructured layers were stoichiometric and phase pure NiO as confirmed by XRD, Rutherford backscattering spectrometry (RBS), and nuclear reaction analysis (NRA). X-ray photoelectron spectroscopy (XPS) indicated the formation of slightly oxygen-rich surfaces. The assessment of NiO films in electrocatalysis revealed promising activity for the oxygen evolution reactions (OER). The current densities of 10 mA cm-2 achieved at overpotentials ranging between 0.48 and 0.52 V highlight the suitability of the new Ni complexes in CVD processes for the fabrication of thin film electrocatalysts.
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Affiliation(s)
- Dennis Zywitzki
- Inorganic Materials Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
| | - Dereje H Taffa
- Chemical Technology 1, Institute of Chemistry, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Germany
| | - Laura Lamkowski
- Inorganic Materials Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
| | - Manuela Winter
- Inorganic Materials Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
| | | | - Michael Wark
- Chemical Technology 1, Institute of Chemistry, Carl von Ossietzky University Oldenburg, 26129 Oldenburg, Germany
| | - Anjana Devi
- Inorganic Materials Chemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, 44801 Bochum, Germany
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11
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Wang Y, Liang Y, Zeng D, Zhu M, Fu J, Zhu T, Han H, Li C, Wang W. Electrochemical deposition of p-type β-Ni(OH)2 nanosheets onto CdS nanorod array photoanode for enhanced photoelectrochemical water splitting. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.135763] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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12
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Nagakawa H, Nagata M. In situ synthesis of CdS/CdWO4 nanorods core–shell composite via acid dissolution. RSC Adv 2020; 10:105-111. [PMID: 35492568 PMCID: PMC9047525 DOI: 10.1039/c9ra09858e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 12/16/2019] [Indexed: 11/21/2022] Open
Abstract
The prevention of photocorrosion in photocatalysts allows for the use of a wide variety of visible-light-responsive photocatalysts, leading to highly efficient photocatalytic reactions.
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Affiliation(s)
- Haruki Nagakawa
- Department of Industrial Chemistry
- Graduate School of Engineering
- Tokyo University of Science
- Tokyo 162-0826
- Japan
| | - Morio Nagata
- Department of Industrial Chemistry
- Graduate School of Engineering
- Tokyo University of Science
- Tokyo 162-0826
- Japan
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13
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Nagli M, Caspary Toroker M. Communication: Nickel hydroxide as an exceptional deviation from the quantum size effect. J Chem Phys 2018; 149:141103. [PMID: 30316282 DOI: 10.1063/1.5051202] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The quantum size effect is a well-known fundamental scientific phenomenon. Due to quantum confinement, downscaling a system to small sizes should increase the bandgap of a solid state material. However, in this work, we present an exception: monolayers of nickel hydroxide have smaller bandgaps than their bulk analogues, due to the surface states appearing at energies within the bandgap region. Our findings are obtained by several state-of-the-art first principles calculations.
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Affiliation(s)
- Michael Nagli
- Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Maytal Caspary Toroker
- Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel
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14
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Mahadik MA, Subramanian A, Ryu J, Cho M, Jang JS. A hydrothermally grown CdS nanograin-sensitized 1D Zr:α-Fe2O3/FTO photoanode for efficient solar-light-driven photoelectrochemical performance. Dalton Trans 2017; 46:2377-2386. [DOI: 10.1039/c6dt04472g] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A CdS nanograin sensitized 1D Zr:Fe2O3 nanorod arrays nanostructure was hydrothermally synthesized and showed an excellent photoelectrochemical performance due to the combined effect of light absorption in CdS and effective charge transport in one dimensional Zr:Fe2O3 nanorod arrays.
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Affiliation(s)
- Mahadeo A. Mahadik
- Division of Biotechnology
- Safety
- Environment and Life Science Institute
- College of Environmental and Bioresource Sciences
- Chonbuk National University
| | - Arunprabaharan Subramanian
- Division of Biotechnology
- Safety
- Environment and Life Science Institute
- College of Environmental and Bioresource Sciences
- Chonbuk National University
| | - Jungho Ryu
- Mineral Resources Research Division
- Korea Institute of Geoscience and Mineral Resources (KIGAM)
- Daejeon 305-350
- Republic of Korea
| | - Min Cho
- Division of Biotechnology
- Safety
- Environment and Life Science Institute
- College of Environmental and Bioresource Sciences
- Chonbuk National University
| | - Jum Suk Jang
- Division of Biotechnology
- Safety
- Environment and Life Science Institute
- College of Environmental and Bioresource Sciences
- Chonbuk National University
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