151
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Ferroelectric Materials: A Novel Pathway for Efficient Solar Water Splitting. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8091526] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Over the past few decades, solar water splitting has evolved into one of the most promising techniques for harvesting hydrogen using solar energy. Despite the high potential of this process for hydrogen production, many research groups have encountered significant challenges in the quest to achieve a high solar-to-hydrogen conversion efficiency. Recently, ferroelectric materials have attracted much attention as promising candidate materials for water splitting. These materials are among the best candidates for achieving water oxidation using solar energy. Moreover, their characteristics are changeable by atom substitute doping or the fabrication of a new complex structure. In this review, we describe solar water splitting technology via the solar-to-hydrogen conversion process. We will examine the challenges associated with this technology whereby ferroelectric materials are exploited to achieve a high solar-to-hydrogen conversion efficiency.
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152
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Zhang W, Li R, Zhao X, Chen Z, Law AWK, Zhou K. A Cobalt-Based Metal-Organic Framework as Cocatalyst on BiVO 4 Photoanode for Enhanced Photoelectrochemical Water Oxidation. CHEMSUSCHEM 2018; 11:2710-2716. [PMID: 29975458 DOI: 10.1002/cssc.201801162] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 07/02/2018] [Indexed: 06/08/2023]
Abstract
A metal-organic framework (MOF)-modified bismuth vanadate (BiVO4 ) photoanode is fabricated by an ultrathin sheet-induced growth strategy, where ultrathin cobalt oxide sheets act as a metal source for the in situ synthesis of Co-based MOF poly[Co2 (benzimidazole)4 ] (denoted [Co2 (bim)4 ]) nanoparticles on the surface of BiVO4 . [Co2 (bim)4 ] with small particle size and high dispersion can serve as a promising cocatalyst to accept holes transferred from BiVO4 and boost surface reaction kinetics for photoelectrochemical (PEC) water oxidation. The photocurrent density of a [Co2 (bim)4 ]-modified BiVO4 photoanode can achieve 3.1 mA cm-2 under AM 1.5G illumination at 1.23 V versus the reversible hydrogen electrode (RHE), which is better than those of pristine and cobalt-based inorganic materials-modified BiVO4 photoanodes. [Co2 (bim)4 ], with porosity and abundant metal sites, exhibits a high surface charge-separation efficiency (83 % at 1.2 V versus RHE), leading to the enhanced PEC activity. This work will bring new insight into the development of MOF materials as competent cocatalysts for PEC water splitting applications.
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Affiliation(s)
- Wang Zhang
- Environmental Process Modelling Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore, 637141, Singapore
| | - Rui Li
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Xin Zhao
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Zhong Chen
- School of Materials Science and Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Adrian Wing-Keung Law
- Environmental Process Modelling Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore, 637141, Singapore
- School of Civil and Environmental Engineering, Nanyang Technological University, Singapore, 639798, Singapore
| | - Kun Zhou
- Environmental Process Modelling Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore, 637141, Singapore
- School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 639798, Singapore
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153
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Yang H, Li F, Wu X, Zhang P, Li W, Cao S, Shan Y, Sun L. Improving the performance of water splitting electrodes by composite plating with nano-SiO2. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.05.163] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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154
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Hydrotalcite-Type Materials Electrodeposited on Open-Cell Metallic Foams as Structured Catalysts. INORGANICS 2018. [DOI: 10.3390/inorganics6030074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Structured catalysts based on hydrotalcite-derived coatings on open-cell metallic foams combine tailored basic/acidic sites, relatively high specific surface area and/or metal dispersion of the coating as well as low pressure drop and enhanced heat and mass transfer of the 3D metallic support. The properties of the resulting structured catalysts depend on the coating procedure. We have proposed the electro-base generation method for in situ and fast precipitation of Ni/Al and Rh/Mg/Al hydrotalcite-type materials on FeCrAlloy foams, which after calcination at high temperature give rise to structured catalysts for syngas (CO + H2) production through Steam Reforming and Catalytic Partial Oxidation of CH4. The fundamental understanding of the electrochemical-chemical reactions relevant for the electrodeposition and the influence of electrosynthesis parameters on the properties of the as-deposited coatings as well the resulting structured catalysts and, hence, on their catalytic performance, were summarized.
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155
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Li C, Luo Z, Wang T, Gong J. Surface, Bulk, and Interface: Rational Design of Hematite Architecture toward Efficient Photo-Electrochemical Water Splitting. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1707502. [PMID: 29750372 DOI: 10.1002/adma.201707502] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 01/27/2018] [Indexed: 06/08/2023]
Abstract
Collecting and storing solar energy to hydrogen fuel through a photo-electrochemical (PEC) cell provides a clean and renewable pathway for future energy demands. Having earth-abundance, low biotoxicity, robustness, and an ideal n-type band position, hematite (α-Fe2 O3 ), the most common natural form of iron oxide, has occupied the research hotspot for decades. Here, a close look into recent progress of hematite photoanodes for PEC water splitting is provided. Effective approaches are introduced, such as cocatalysts loading and surface passivation layer deposition, to improve the hematite surface reaction in thermodynamics and kinetics. Second, typical methods for enhancing light absorption and accelerating charge transport in hematite bulk are reviewed, concentrating upon doping and nanostructuring. Third, the back contact between hematite and substrate, which affects interface states and electron transfer, is deliberated. In addition, perspectives on the key challenges and future prospects for the development of hematite photoelectrodes for PEC water splitting are given.
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Affiliation(s)
- Chengcheng Li
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Zhibin Luo
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Tuo Wang
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Jinlong Gong
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, China
- Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
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156
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Jiang Y, Li X, Liu B, Yi J, Fang Y, Shi F, Gao X, Sudzilovsky E, Parameswaran R, Koehler K, Nair V, Yue J, Guo K, Fang Y, Tsai HM, Freyermuth G, Wong RCS, Kao CM, Chen CT, Nicholls AW, Wu X, Shepherd GMG, Tian B. Rational design of silicon structures for optically controlled multiscale biointerfaces. Nat Biomed Eng 2018; 2:508-521. [PMID: 30906646 PMCID: PMC6430241 DOI: 10.1038/s41551-018-0230-1] [Citation(s) in RCA: 121] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/20/2018] [Indexed: 01/28/2023]
Abstract
Silicon-based materials have been widely used. However, remotely controlled and interconnect-free silicon configurations have been rarely explored, because of limited fundamental understanding of the complex physicochemical processes that occur at interfaces between silicon and biological materials. Here, we describe rational design principles, guided by biology, for establishing intracellular, intercellular and extracellular silicon-based interfaces, where the silicon and the biological targets have matched properties. We focused on light-induced processes at these interfaces, and developed a set of matrices to quantify and differentiate the capacitive, Faradaic and thermal outputs from about 30 different silicon materials in saline. We show that these interfaces are useful for the light-controlled non-genetic modulation of intracellular calcium dynamics, of cytoskeletal structures and transport, of cellular excitability, of neurotransmitter release from brain slices, and of brain activity in vivo.
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Affiliation(s)
- Yuanwen Jiang
- Department of Chemistry, University of Chicago, Chicago, IL, USA
- The James Franck Institute, University of Chicago, Chicago, IL, USA
| | - Xiaojian Li
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Bing Liu
- Department of Neurobiology, University of Chicago, Chicago, IL, USA
| | - Jaeseok Yi
- Department of Chemistry, University of Chicago, Chicago, IL, USA
- The James Franck Institute, University of Chicago, Chicago, IL, USA
| | - Yin Fang
- The James Franck Institute, University of Chicago, Chicago, IL, USA
| | - Fengyuan Shi
- The Research Resources Center, University of Illinois at Chicago, Chicago, IL, USA
| | - Xiang Gao
- The James Franck Institute, University of Chicago, Chicago, IL, USA
| | | | - Ramya Parameswaran
- The Graduate Program in Biophysical Sciences, University of Chicago, Chicago, IL, USA
| | - Kelliann Koehler
- Department of Chemistry, University of Chicago, Chicago, IL, USA
- The James Franck Institute, University of Chicago, Chicago, IL, USA
| | - Vishnu Nair
- Department of Chemistry, University of Chicago, Chicago, IL, USA
- The James Franck Institute, University of Chicago, Chicago, IL, USA
| | - Jiping Yue
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - KuangHua Guo
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Yin Fang
- Department of Chemistry, University of Chicago, Chicago, IL, USA
| | - Hsiu-Ming Tsai
- Department of Radiology, University of Chicago, Chicago, IL, USA
| | | | - Raymond C S Wong
- University Research Facility in Behavioral and Systems Neuroscience (UBSN), Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Chien-Min Kao
- Department of Radiology, University of Chicago, Chicago, IL, USA
| | - Chin-Tu Chen
- Department of Radiology, University of Chicago, Chicago, IL, USA
| | - Alan W Nicholls
- The Research Resources Center, University of Illinois at Chicago, Chicago, IL, USA
| | - Xiaoyang Wu
- Ben May Department for Cancer Research, University of Chicago, Chicago, IL, USA
| | - Gordon M G Shepherd
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Bozhi Tian
- Department of Chemistry, University of Chicago, Chicago, IL, USA.
- The James Franck Institute, University of Chicago, Chicago, IL, USA.
- The Institute for Biophysical Dynamics, Chicago, IL, USA.
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157
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Basu M. In-situ developed carbon spheres function as promising support for enhanced activity of cobalt oxide in oxygen evolution reaction. J Colloid Interface Sci 2018; 530:264-273. [PMID: 29982018 DOI: 10.1016/j.jcis.2018.06.087] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 01/22/2023]
Abstract
Highly active, stable electrocatalyst for oxygen evolution reaction (OER) is sincerely required for the practical application of water splitting to get rid from the sluggish reaction kinetics and the stability issue. Here, Co3O4 is studied as OER catalyst and to improve the electrocatalytic activity, carbon is chosen as the conducting support. A simple and cost-effective synthetic route is developed for the synthesis of Co3O4 on carbon support following hydrothermal route using various hydrolyzing agents. The heterostructure 'Co3O4/C' perform well in OER as a non-precious metal catalyst. The best Co3O4/C electrocatalyst can generate 10 and 30 mA/cm2 current densities upon application of 1.623 V and 1.678 V vs. RHE whereas, bare Co3O4 can generate current density of 10 and 30 mA/cm2 upon application of 1.677 and 1.754 V vs. RHE. Carbon in the heterostructure helps to improve the conductivity and at the same time enhances the charge transfer ability which further leads to increase current density and stability to the catalyst. Co3O4/C can generate unaltered current density up to 1000 cycles.
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Affiliation(s)
- Mrinmoyee Basu
- Department of Chemistry, BITS Pilani, Pilani, Rajasthan 333031, India.
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158
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Lee SA, Lee TH, Kim C, Lee MG, Choi MJ, Park H, Choi S, Oh J, Jang HW. Tailored NiOx/Ni Cocatalysts on Silicon for Highly Efficient Water Splitting Photoanodes via Pulsed Electrodeposition. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01999] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Sol A Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Tae Hyung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Changyeon Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Mi Gyoung Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Min-Ju Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Hoonkee Park
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Seokhoon Choi
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Jihun Oh
- Graduate School of EEWS (Energy, Environment, Water and Sustainability), Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, 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
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159
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Chen Q, Switzer JA. Photoelectrochemistry of Ultrathin, Semitransparent, and Catalytic Gold Films Electrodeposited Epitaxially onto n-Silicon (111). ACS APPLIED MATERIALS & INTERFACES 2018; 10:21365-21371. [PMID: 29856594 DOI: 10.1021/acsami.8b06388] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An ultrathin, epitaxial Au layer was electrochemically deposited on n-Si(111) to form a Schottky junction that was used as the photoanode in a regenerative photoelectrochemical cell. Au serves as a semitransparent contact that both stabilizes n-Si against photopassivation and catalyzes the oxidation of Fe2+ to Fe3+. In this cell, Fe2+ was oxidized at the n-Si(111)/Au(111) photoanode and Fe3+ was reduced at the Au cathode, leading to the conversion of solar energy into electrical energy with no net chemical reaction. The photocurrent was limited to 11.9 mA·cm-2 because of the absorption of light by the Fe2+/3+ redox couple. When a transparent solution of sulfite ion was oxidized at the photoanode, photocurrent densities as high as 28.5 mA·cm-2 were observed with AM 1.5 light of 100 mW·cm-2 intensity. One goal of the work was to determine the effect of the Au layer on the interfacial energetics as a function of the Au coverage. There was a decrease in the barrier height from 0.81 to 0.73 eV as the gold coverage was increased from island growth with 10% coverage to a dense Au film with a thickness of 11 nm. In all cases, the band-bending in n-Si was induced by the n-Si/Au Schottky junction instead of the energetic mismatch between the Fermi level of n-Si and the redox couple. The dense Au film gave the greatest stability. Although the photocurrent of the n-Si/Au photoanode with 10.2% island coverage dropped nearly to zero within 2 h, the photocurrent of the photoanode with a dense 11 nm thick Au film only decreased to 92% of its initial value after irradiation at open circuit with AM 1.5 light for 16 h. A 2.1 nm thick layer of SiO x formed between the Au film and n-Si. With further irradiation, the fill factor decreased because of the increase of series resistance as the SiO x layer thickness exceeded tunneling dimensions.
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Affiliation(s)
- Qingzhi Chen
- Department of Chemistry and Graduate Center for Materials Research , Missouri University of Science and Technology , Rolla , Missouri 65409-1170 , United States
| | - Jay A Switzer
- Department of Chemistry and Graduate Center for Materials Research , Missouri University of Science and Technology , Rolla , Missouri 65409-1170 , United States
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160
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Morgan Chan Z, Kitchaev DA, Nelson Weker J, Schnedermann C, Lim K, Ceder G, Tumas W, Toney MF, Nocera DG. Electrochemical trapping of metastable Mn 3+ ions for activation of MnO 2 oxygen evolution catalysts. Proc Natl Acad Sci U S A 2018; 115:E5261-E5268. [PMID: 29784802 PMCID: PMC6003334 DOI: 10.1073/pnas.1722235115] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Electrodeposited manganese oxide films are promising catalysts for promoting the oxygen evolution reaction (OER), especially in acidic solutions. The activity of these catalysts is known to be enhanced by the introduction of Mn3+ We present in situ electrochemical and X-ray absorption spectroscopic studies, which reveal that Mn3+ may be introduced into MnO2 by an electrochemically induced comproportionation reaction with Mn2+ and that Mn3+ persists in OER active films. Extended X-ray absorption fine structure (EXAFS) spectra of the Mn3+-activated films indicate a decrease in the Mn-O coordination number, and Raman microspectroscopy reveals the presence of distorted Mn-O environments. Computational studies show that Mn3+ is kinetically trapped in tetrahedral sites and in a fully oxidized structure, consistent with the reduction of coordination number observed in EXAFS. Although in a reduced state, computation shows that Mn3+ states are stabilized relative to those of oxygen and that the highest occupied molecular orbital (HOMO) is thus dominated by oxygen states. Furthermore, the Mn3+(Td) induces local strain on the oxide sublattice as observed in Raman spectra and results in a reduced gap between the HOMO and the lowest unoccupied molecular orbital (LUMO). The confluence of a reduced HOMO-LUMO gap and oxygen-based HOMO results in the facilitation of OER on the application of anodic potentials to the δ-MnO2 polymorph incorporating Mn3+ ions.
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Affiliation(s)
- Zamyla Morgan Chan
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138
| | - Daniil A Kitchaev
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139
| | - Johanna Nelson Weker
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025
| | | | - Kipil Lim
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025
- Department of Materials Science, Stanford University, Menlo Park, CA 94025
| | - Gerbrand Ceder
- Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139;
- Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720
- Department of Materials Science and Engineering, University of California, Berkeley, CA 94720
| | - William Tumas
- National Renewable Energy Laboratory, Golden, CO 80401
| | - Michael F Toney
- Stanford Synchrotron Radiation Lightsource, SLAC National Accelerator Laboratory, Menlo Park, CA 94025;
| | - Daniel G Nocera
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138;
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161
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Gadiyar C, Strach M, Schouwink P, Loiudice A, Buonsanti R. Chemical transformations at the nanoscale: nanocrystal-seeded synthesis of β-Cu 2V 2O 7 with enhanced photoconversion efficiencies. Chem Sci 2018; 9:5658-5665. [PMID: 30061999 PMCID: PMC6050627 DOI: 10.1039/c8sc01314d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 05/25/2018] [Indexed: 11/24/2022] Open
Abstract
Nanocrystal-seeded synthesis relies on the reaction of nanocrystal seeds with a molecular precursor and it can be regarded as the link between sol–gel and solid-state chemistries.
Nanocrystal-seeded synthesis relies on the reaction of nanocrystal seeds with a molecular precursor and it can be regarded as the link between sol–gel and solid-state chemistries. This synthesis approach aims at accessing compositionally complex materials, yet to date its full potential remains unexploited. Herein, surface oxidized Cu nanocrystal seeds with diameters from 6 nm to 70 nm are reacted with vanadium acetylacetonate to form β-Cu2V2O7 with a tunable grain size ranging from 29 nm to 63 nm. In situ X-ray diffraction measurements evidence the occurrence of a solid-state reaction between the NC seeds and the vanadium oxide formed during the annealing. The variation of the ion diffusion lengths, the homogeneity of the precursor solution and the number of nucleation sites with the NC seed size explains the lower formation temperature, the smaller grain size and the higher grain size monodispersity of β-Cu2V2O7 as the seed size decreases. Finally, the tunability afforded by the nanocrystal-seeded synthesis provides a unique opportunity to correlate the photoelectrochemical performance with the grain size in a size regime close to the charge carrier diffusion length of β-Cu2V2O7 (20–40 nm). The net photocurrent density peaks when the grain size is 39 nm by reaching 0.23 mA cm–2 at 1.23 V vs. RHE in the presence of a hole scavenger. While still far from the theoretical limit, this result overcomes the current state-of-the-art for β-Cu2V2O7. An interesting double fold increase in the photocurrent is found in mixed phase β-Cu2V2O7/CuV2O6 samples, suggesting that nanostructuring and heterostructuring are beneficial to the performance.
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Affiliation(s)
- Chethana Gadiyar
- Laboratory of Nanochemistry for Energy (LNCE) , Department of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne , CH-1950 Sion , Switzerland .
| | - Michal Strach
- Laboratory of Nanochemistry for Energy (LNCE) , Department of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne , CH-1950 Sion , Switzerland .
| | - Pascal Schouwink
- Department of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne , CH-1950 Sion , Switzerland
| | - Anna Loiudice
- Laboratory of Nanochemistry for Energy (LNCE) , Department of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne , CH-1950 Sion , Switzerland .
| | - Raffaella Buonsanti
- Laboratory of Nanochemistry for Energy (LNCE) , Department of Chemical Sciences and Engineering , École Polytechnique Fédérale de Lausanne , CH-1950 Sion , Switzerland .
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162
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Hesari M, Mao X, Chen P. Charge Carrier Activity on Single-Particle Photo(electro)catalysts: Toward Function in Solar Energy Conversion. J Am Chem Soc 2018; 140:6729-6740. [DOI: 10.1021/jacs.8b04039] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mahdi Hesari
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Xianwen Mao
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
| | - Peng Chen
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, New York 14853, United States
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163
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164
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Ho TA, Bae C, Nam H, Kim E, Lee SY, Park JH, Shin H. Metallic Ni 3S 2 Films Grown by Atomic Layer Deposition as an Efficient and Stable Electrocatalyst for Overall Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:12807-12815. [PMID: 29578327 DOI: 10.1021/acsami.8b00813] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We describe the direct preparation of crystalline Ni3S2 thin films via atomic layer deposition (ALD) techniques at temperatures as low as 250 °C without postthermal treatments. A new ALD chemistry is proposed using bis(1-dimethylamino-2-methyl-2-butoxy) nickel(II) [Ni(dmamb)2] and H2S as precursors. Homogeneous and conformal depositions of Ni3S2 films were achieved on 4 in. wafers (both metal and oxide substrates, including Au and SiO2). The resulting crystalline Ni3S2 layers exhibited highly efficient and stable performance as electrocatalysts for both the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER) in alkaline solutions, with a low overpotential of 300 mV and a high turnover frequency for HER and an overpotential of 400 mV for OER (at a current density of 10 mA/cm2). Using our Ni3S2 films as both the cathode and the anode, two-electrode full-cell electrolyzers were constructed, which showed stable operation for 100 h at a current density of 10 mA/cm2. The proposed ALD electrocatalysts on planar surfaces exhibited the best performance among Ni3S2 materials for overall water splitting recorded to date.
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Affiliation(s)
| | | | | | | | - Seung Yong Lee
- Center for Materials Architecturing , Korea Institute of Science Technology , Seoul 136-791 , South Korea
| | - Jong Hyeok Park
- Department of Chemical and Biomolecular Engineering , YonSei University , Seoul 120-749 , South Korea
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165
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Liao A, He H, Tang L, Li Y, Zhang J, Chen J, Chen L, Zhang C, Zhou Y, Zou Z. Quasi-Topotactic Transformation of FeOOH Nanorods to Robust Fe 2O 3 Porous Nanopillars Triggered with a Facile Rapid Dehydration Strategy for Efficient Photoelectrochemical Water Splitting. ACS APPLIED MATERIALS & INTERFACES 2018; 10:10141-10146. [PMID: 29498822 DOI: 10.1021/acsami.8b00367] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A facile rapid dehydration (RD) strategy is explored for quasi-topotactic transformation of FeOOH nanorods to robust Fe2O3 porous nanopillars, avoiding collapse, shrink, and coalescence, and compared with a conventional treatment route. Additionally, the so-called RD process is capable of generating a beneficial porous structure for photoelectrochemical water oxidation. The obtained RD-Fe2O3 photoanode exhibits a photocurrent density as high as 2.0 mA cm-2 at 1.23 V versus reversible hydrogen electrode (RHE) and a saturated photocurrent density of 3.5 mA cm-2 at 1.71 V versus RHE without any cocatalysts, which is about 270% improved photocurrent density over Fe2O3 with the conventional temperature-rising route (0.75 mA cm-2 at 1.23 V vs RHE and 1.48 mA cm-2 at 1.71 V vs RHE, respectively). The enhanced photocurrent on RD-Fe2O3 is attributed to a synergistic effect of the following factors: (i) preservation of single crystalline nanopillars decreases the charge-carrier recombination; (ii) formation of long nanopillars enhances light harvesting; and (iii) the porous structure shortens the hole transport distance from the bulk material to the electrode-electrolyte interface.
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Affiliation(s)
| | - Huichao He
- State Key Laboratory of Environmental Friendly Energy Materials, School of Materials Science and Engineering , Southwest University of Science and Technology , Mianyang , Sichuan 621010 , P. R. China
| | - Lanqin Tang
- College of Chemistry and Chemical Engineering , Yancheng Institute of Technology , Yancheng 22401 , P. R. China
| | | | - Jiyuan Zhang
- Sunlite Ltc, Kunshan Innovation Institute of Nanjing University , Kunshan , Jiangsu 215347 , P. R. China
| | - Jiani Chen
- State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering , Nanjing University , Nanjing 210046 , P. R. China
| | | | | | - Yong Zhou
- Sunlite Ltc, Kunshan Innovation Institute of Nanjing University , Kunshan , Jiangsu 215347 , P. R. China
| | - Zhigang Zou
- College of Chemistry and Chemical Engineering , Yancheng Institute of Technology , Yancheng 22401 , P. R. China
- Sunlite Ltc, Kunshan Innovation Institute of Nanjing University , Kunshan , Jiangsu 215347 , P. R. China
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166
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Tian P, Yu Y, Yin X, Wang X. A wafer-scale 1 nm Ni(OH) 2 nanosheet with superior electrocatalytic activity for the oxygen evolution reaction. NANOSCALE 2018; 10:5054-5059. [PMID: 29487932 DOI: 10.1039/c7nr09042k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
A wafer-scale 1.4 nm ultrathin Ni(OH)2 nanosheet was synthesized by ionic layer epitaxy. This free-standing Ni(OH)2 nanosheet was directly used to catalyze the oxygen evolution reaction (OER). At a current density of 10 mA cm-2, the overpotential reached 295 mV (vs. RHE) in Fe-rich 1 M NaOH. This 1.4 nm Ni(OH)2 nanosheet showed a very high turnover frequency of 5.47 s-1 and a mass activity of more than 2 × 104 A g-1 at an overpotential of 300 mV. Such a high electrocatalytic mass activity of the Ni(OH)2 nanosheet was more than 2 orders of magnitude higher than those of typical OER catalysts. The capability of producing wafer-scale nanometer-thick nanosheets offers a promising strategy to improve the mass efficiency of electrochemical catalysts, which is particularly valuable for preserving rare and precious catalyst materials.
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Affiliation(s)
- Peng Tian
- Department of Material Sciences and Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.
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167
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Chia X, Sutrisnoh NAA, Pumera M. Tunable Pt-MoS x Hybrid Catalysts for Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2018; 10:8702-8711. [PMID: 29505238 DOI: 10.1021/acsami.7b19346] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Platinum (Pt)-based materials are inevitably among the best-performing electrocatalysts for hydrogen evolution reaction (HER). MoS2 was suggested to be a potent HER catalyst to replace Pt in this reaction by theoretical modeling; however, in practice, this dream remains elusive. Here we show a facile one-pot bottom-up synthesis of Pt-MoS x composites using electrochemical reduction in an electrolytic bath of Pt precursor and ammonium tetrathiomolybdate under ambient conditions. By modifying the millimolar concentration of Pt precursors, composites of different surface elemental composition are fabricated; specifically, Pt1.8MoS2, Pt0.1MoS2.5, Pt0.2MoS0.6, and Pt0.3MoS0.8. All electrodeposited Pt-MoS x hybrids showcase low overpotentials and small Tafel slopes that outperform MoS2 as an electrocatalyst. Tantamount to electrodeposited Pt, the rate-limiting process in the HER mechanism is determined to be the Heyrovsky desorption across Pt-MoS x hybrids and starkly swings from the rate-determining Volmer adsorption step in MoS2. The Pt-MoS x composites are equipped with catalytic performance that closely mirrors that of electrodeposited Pt, in particular the HER kinetics for Pt1.8MoS2 and Pt0.1MoS2.5. This work advocates electrosynthesis as a cost-effective method for catalyst design and fabrication of competent composite materials for water splitting applications.
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Affiliation(s)
- Xinyi Chia
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Nur Ayu Afira Sutrisnoh
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
| | - Martin Pumera
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371 , Singapore
- Central European Institute of Technology , Brno University of Technology , Purkyňova 123 , CZ-61200 Brno , Czech Republic
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168
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Zhang L, Ghimire P, Phuriragpitikhon J, Jiang B, Gonçalves AA, Jaroniec M. Facile formation of metallic bismuth/bismuth oxide heterojunction on porous carbon with enhanced photocatalytic activity. J Colloid Interface Sci 2018; 513:82-91. [DOI: 10.1016/j.jcis.2017.11.011] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 10/31/2017] [Accepted: 11/04/2017] [Indexed: 11/26/2022]
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169
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Chia X, Pumera M. Inverse Opal-like Porous MoSe x Films for Hydrogen Evolution Catalysis: Overpotential-Pore Size Dependence. ACS APPLIED MATERIALS & INTERFACES 2018; 10:4937-4945. [PMID: 29373008 DOI: 10.1021/acsami.7b17800] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Transition metal dichalcogenides (TMDs) are prized as electrocatalysts for hydrogen evolution reaction (HER). Common TMD syntheses entail conditions of high temperatures and reagents that are detrimental to the environment. The electrochemical synthesis of TMDs is advocated as a viable alternative to the conventional synthetic procedures in terms of simplicity, ecological sustainability, and versatility of deposition on various surfaces at room temperature. In this work, we demonstrate the successful fabrication of electrocatalytic inverse opal porous MoSex films, where 2 ≤ x ≤ 3, via solid template-assisted electrodeposition from the simultaneous electroreduction of molybdic acid and selenium dioxide as the respective metal and chalcogen precursors in an aqueous electrolyte. The electrosynthesized porous MoSex films contain pores with diameters of 0.1, 0.3, 0.6, or 1.0 μm, depending on the size of the polystyrene bead template used. The investigation reveals that porous MoSex films with a pore size of 0.1 μm, which prevailed over the other pore sizes, are endowed with the lowest HER overpotential of 0.57 V at -30 mA cm-2 and a Tafel slope of 118 mV dec-1, alluding to the adsorption step as rate limiting. Across all pore sizes, the Volmer adsorption step limits the HER mechanism. Nevertheless, the pore size dictates the catalytic activity of the porous MoSex films apropos of HER overpotential such that the HER performance of smaller pore sizes of 0.1 and 0.3 μm surpasses those with wider pore sizes of 0.6 and 1.0 μm. The observed trends in their HER behavior may be rationalized by the tunable surface wettability as pore sizes vary. These fundamental findings offer a glimpse into the efficacy of electrodeposited porous TMDs as electrocatalysts and exemplify the feasibility of the electrosynthesis method in altering the morphological structure of the TMDs.
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Affiliation(s)
- Xinyi Chia
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
| | - Martin Pumera
- Division of Chemistry & Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371, Singapore
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170
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You B, Han G, Sun Y. Electrocatalytic and photocatalytic hydrogen evolution integrated with organic oxidation. Chem Commun (Camb) 2018; 54:5943-5955. [DOI: 10.1039/c8cc01830h] [Citation(s) in RCA: 105] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We have summarized the recent progress in electrocatalytic and photocatalytic water splitting integrated with organic oxidation for efficient H2 generation, which features no formation of explosive H2/O2 mixtures and reactive oxygen species, higher efficiency compared to conventional water splitting and potential co-production of value-added organic products.
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Affiliation(s)
- Bo You
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
| | - Guanqun Han
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
| | - Yujie Sun
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
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171
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Shi L, Zhuo S, Abulikemu M, Mettela G, Palaniselvam T, Rasul S, Tang B, Yan B, Saleh NB, Wang P. Annealing temperature effects on photoelectrochemical performance of bismuth vanadate thin film photoelectrodes. RSC Adv 2018; 8:29179-29188. [PMID: 35548013 PMCID: PMC9084497 DOI: 10.1039/c8ra04887h] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2018] [Accepted: 08/10/2018] [Indexed: 11/21/2022] Open
Abstract
The effects of annealing treatment between 400 °C and 540 °C on crystallization behavior, grain size, electrochemical (EC) and photoelectrochemical (PEC) oxygen evolution reaction (OER) performances of bismuth vanadate (BiVO4) thin films are investigated in this work. The results show that higher temperature leads to larger grain size, improved crystallinity, and better crystal orientation for the BiVO4 thin film electrodes. Under air-mass 1.5 global (AM 1.5) solar light illumination, the BiVO4 thin film prepared at a higher annealing temperature (500–540 °C) shows better PEC OER performance. Also, the OER photocurrent density increased from 0.25 mA cm−2 to 1.27 mA cm−2 and that of the oxidation of sulfite, a hole scavenger, increased from 1.39 to 2.53 mA cm−2 for the samples prepared from 400 °C to 540 °C. Open-circuit photovoltage decay (OCPVD) measurement indicates that BiVO4 samples prepared at the higher annealing temperature have less charge recombination and longer electron lifetime. However, the BiVO4 samples prepared at lower annealing temperature have better EC performance in the absence of light illumination and more electrochemically active surface sites, which are negatively related to electrochemical double-layer capacitance (Cdl). Cdl was 0.0074 mF cm−2 at 400 °C and it decreased to 0.0006 mF cm−2 at 540 °C. The OER and sulfide oxidation are carefully compared and these show that the efficiency of charge transport in the bulk (ηbulk) and on the surface (ηsurface) of the BiVO4 thin film electrode are improved with the increase in the annealing temperature. The mechanism behind the light-condition-dependent role of the annealing treatment is also discussed. The effects of annealing treatment on crystallization behavior, grain size, electrochemical (EC) and photoelectrochemical (PEC) oxygen evolution reaction (OER) performances of bismuth vanadate (BiVO4) thin films are investigated in this work.![]()
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Affiliation(s)
- Le Shi
- Water Desalination and Reuse Center
- Division of Biological and Environmental Sciences and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Sifei Zhuo
- Water Desalination and Reuse Center
- Division of Biological and Environmental Sciences and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Mutalifu Abulikemu
- Water Desalination and Reuse Center
- Division of Biological and Environmental Sciences and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Gangaiah Mettela
- Water Desalination and Reuse Center
- Division of Biological and Environmental Sciences and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Thangavelu Palaniselvam
- Water Desalination and Reuse Center
- Division of Biological and Environmental Sciences and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Shahid Rasul
- Water Desalination and Reuse Center
- Division of Biological and Environmental Sciences and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Bo Tang
- Water Desalination and Reuse Center
- Division of Biological and Environmental Sciences and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Buyi Yan
- Division of Physical Science and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
| | - Navid B. Saleh
- Department of Civil, Architectural and Environmental Engineering
- University of Texas at Austin
- Austin
- USA
| | - Peng Wang
- Water Desalination and Reuse Center
- Division of Biological and Environmental Sciences and Engineering
- King Abdullah University of Science and Technology
- Saudi Arabia
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172
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Sun L, Zhan W, Li YA, Wang F, Zhang X, Han X. Understanding the facet-dependent catalytic performance of hematite microcrystals in a CO oxidation reaction. Inorg Chem Front 2018. [DOI: 10.1039/c8qi00548f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
α-Fe2O3 microcrystals with uniform plate, cube and rod morphologies have been synthesized. DFT calculations and experimental results indicated that the Fe2O3 nanorods showed an obvious improvement of CO catalytic activities due to their unique surface structure.
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173
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Tan L, Liu Y, Mao B, Luo B, Gong G, Hong Y, Chen B, Shi W. Effective bandgap narrowing of Cu–In–Zn–S quantum dots for photocatalytic H2 production via cocatalyst-alleviated charge recombination. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00607a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Effective bandgap narrowing of Cu–In–Zn–S quantum dots is achieved with increased tolerance of Cu from the cocatalyst-alleviated charge recombination.
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Affiliation(s)
- Lili Tan
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Yanhong Liu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Baodong Mao
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Bifu Luo
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Guan Gong
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Yuanzhi Hong
- School of Materials Science and Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Biyi Chen
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
| | - Weidong Shi
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang 212013
- P. R. China
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174
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Phuan YW, Ong WJ, Chong MN, Ocon JD. Prospects of electrochemically synthesized hematite photoanodes for photoelectrochemical water splitting: A review. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS 2017. [DOI: 10.1016/j.jphotochemrev.2017.10.001] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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175
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Li L, Zhao X, Pan D, Li G. Nanotube array-like WO 3 /W photoanode fabricated by electrochemical anodization for photoelectrocatalytic overall water splitting. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(17)62948-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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176
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Xu Y, Li A, Yao T, Ma C, Zhang X, Shah JH, Han H. Strategies for Efficient Charge Separation and Transfer in Artificial Photosynthesis of Solar Fuels. CHEMSUSCHEM 2017; 10:4277-4305. [PMID: 29105988 DOI: 10.1002/cssc.201701598] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 10/31/2017] [Indexed: 06/07/2023]
Abstract
Converting sunlight to solar fuels by artificial photosynthesis is an innovative science and technology for renewable energy. Light harvesting, photogenerated charge separation and transfer (CST), and catalytic reactions are the three primary steps in the processes involved in the conversion of solar energy to chemical energy (SE-CE). Among the processes, CST is the key "energy pump and delivery" step in determining the overall solar-energy conversion efficiency. Efficient CST is always high priority in designing and assembling artificial photosynthesis systems for solar-fuel production. This Review not only introduces the fundamental strategies for CST but also the combinatory application of these strategies to five types of the most-investigated semiconductor-based artificial photosynthesis systems: particulate, Z-scheme, hybrid, photoelectrochemical, and photovoltaics-assisted systems. We show that artificial photosynthesis systems with high SE-CE efficiency can be rationally designed and constructed through combinatory application of these strategies, setting a promising blueprint for the future of solar fuels.
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Affiliation(s)
- Yuxing Xu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Dalian, 116023, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Ailong Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Dalian, 116023, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Tingting Yao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Dalian, 116023, P.R. China
| | - Changtong Ma
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Dalian, 116023, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Xianwen Zhang
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Dalian, 116023, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Jafar Hussain Shah
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Dalian, 116023, P.R. China
- University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Hongxian Han
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, 457 Zhongshan Road, Dalian, 116023, P.R. China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
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177
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Hajibabaei H, Hamann TW. Selective Electrodeposition of Tantalum(V) Oxide Electrodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10800-10806. [PMID: 28934549 DOI: 10.1021/acs.langmuir.7b02414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Thin films of TaOxHy were cathodically electrodeposited from an aqueous solution containing Ta-IPA precursor and KNO3 as a sacrificial agent. It was shown that the deposition resulted from a precipitation reaction triggered by the local change of pH at the surface of working electrode. Combined structural and compositional analysis revealed that during the electrodeposition the oxidation state of tantalum remained constant, Ta(V). The as-deposited films are mesoporous amorphous tantalum oxide hydrate films, which can be converted to either pure Ta2O5 or Ta3N5 by high-temperature annealing in either air (or Ar) or ammonia, respectively. The Ta3N5 electrodes exhibited promising PEC activity for water oxidation. These results open the door for the reduced temperature synthesis of Ta3N5 electrodes on TCO substrates which would allow for efficient overall solar water splitting.
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Affiliation(s)
- Hamed Hajibabaei
- Department of Chemistry, Michigan State University , 578 S Shaw Lane, East Lansing, Michigan 48824-1322, United States
| | - Thomas W Hamann
- Department of Chemistry, Michigan State University , 578 S Shaw Lane, East Lansing, Michigan 48824-1322, United States
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178
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Davi M, Ogutu G, Schrader F, Rokicinska A, Kustrowski P, Slabon A. Enhancing Photoelectrochemical Water Oxidation Efficiency of WO3
/α-Fe2
O3
Heterojunction Photoanodes by Surface Functionalization with CoPd Nanocrystals. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700952] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Davi
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - George Ogutu
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Felix Schrader
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
| | - Anna Rokicinska
- Faculty of Chemistry; Jagiellonian University; Gronostajowa 2 30-387 Krakow Poland
| | - Piotr Kustrowski
- Faculty of Chemistry; Jagiellonian University; Gronostajowa 2 30-387 Krakow Poland
| | - Adam Slabon
- Institute of Inorganic Chemistry; RWTH Aachen University; Landoltweg 1 52074 Aachen Germany
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179
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Li MM, Dincă M. Pt Electrodes Enable the Formation of μ 4-O Centers in MOF-5 from Multiple Oxygen Sources. ACS APPLIED MATERIALS & INTERFACES 2017; 9:33528-33532. [PMID: 28177222 DOI: 10.1021/acsami.6b16821] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The μ4-O2- ions in the Zn4O(O2C-)6 secondary building units of Zn4O(1,4-benzenedicarboxylate)3 (MOF-5) electrodeposited under cathodic bias can be sourced from nitrate, water, and molecular oxygen when using platinum gauze as working electrodes. The use of Zn(ClO4)2·6H2O, anhydrous Zn(NO3)2, or anhydrous Zn(CF3SO3)2 as Zn2+ sources under rigorous control of other sources of oxygen, including water and O2, confirm that the source of the μ4-O2- ions can be promiscuous. Although this finding reveals a relatively complicated manifold of electrochemical processes responsible for the crystallization of MOF-5 under cathodic bias, it further highlights the importance of hydroxide intermediates in the formation of the Zn4O(O2C-R) secondary building units in this iconic material and is illustrative of the complicated crystallization mechanisms of metal-organic frameworks in general.
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Affiliation(s)
- Minyuan M Li
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
| | - Mircea Dincă
- Department of Chemistry, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States
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180
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Kobayashi A, Watanabe S, Ebina M, Yoshida M, Kato M. Effects of phosphonate ester groups attached on a heteroleptic Ir(III) photosensitizer. J Photochem Photobiol A Chem 2017. [DOI: 10.1016/j.jphotochem.2017.06.042] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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181
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Sun Y, Xu B, Shen Q, Hang L, Men D, Zhang T, Li H, Li C, Li Y. Rapid and Efficient Self-Assembly of Au@ZnO Core-Shell Nanoparticle Arrays with an Enhanced and Tunable Plasmonic Absorption for Photoelectrochemical Hydrogen Generation. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31897-31906. [PMID: 28853855 DOI: 10.1021/acsami.7b09325] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
High-quality Au@ZnO core-shell nanoparticle (NP) array films were easily and efficiently fabricated through an air/water interfacial self-assembly. These materials have remarkable visible light absorption capacity and fascinating performance in photoelectrochemical (PEC) water splitting with a photocurrent density of ∼3.08 mA/cm2 at 0.4 V, which is superior to most ZnO-based photoelectrodes in studies. Additionally, the interesting PEC performance could be effectively adjusted by altering the thickness of the ZnO shell and/or the layer number of the array films. Results indicated that the bilayer film based on Au@ZnO NPs with 25 nm shell thickness displayed optimal behavior. The remarkable PEC capability could be ascribed to the enhanced light-harvesting ability of the Au@ZnO structured NPs by the SPR effect and the optimum film thickness. This work demonstrates a desirable paradigm for preparing photoelectrodes based on the synergistic effect of plasmatic NPs as the core and a visible optical absorbent and semiconductor as the shell. Moreover, this work provides a new approach for fabricating optoelectronic anode thin film devices through a self-assembly method.
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Affiliation(s)
- Yiqiang Sun
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, P. R. China
- University of Science and Technology of China , Hefei 230026, P. R. China
| | - Bo Xu
- School of Chemistry and Chemical Engineering, University of Jinan , Jinan, 250022 Shandong, P. R. China
| | - Qi Shen
- Shandong Institute for Product Quality Inspection , Jinan, 250102 Shandong, P. R. China
| | - Lifeng Hang
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, P. R. China
| | - Dandan Men
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, P. R. China
| | - Tao Zhang
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, P. R. China
- University of Science and Technology of China , Hefei 230026, P. R. China
| | - Huilin Li
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, P. R. China
- University of Science and Technology of China , Hefei 230026, P. R. China
| | - Cuncheng Li
- School of Chemistry and Chemical Engineering, University of Jinan , Jinan, 250022 Shandong, P. R. China
| | - Yue Li
- Key Lab of Materials Physics, Anhui Key Lab of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences , Hefei 230031, P. R. China
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182
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Cardiel AC, McDonald KJ, Choi KS. Electrochemical Growth of Copper Hydroxy Double Salt Films and Their Conversion to Nanostructured p-Type CuO Photocathodes. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:9262-9270. [PMID: 28570069 DOI: 10.1021/acs.langmuir.7b00588] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
New electrochemical synthesis methods were developed to produce copper hydroxy double salt(Cu-HDS) films with four different intercalated anions (NO3-, SO42-, Cl-, and dodecyl sulfate (DS)) as pure crystalline films as deposited (Cu2NO3(OH)3, Cu4SO4(OH)6, Cu2Cl(OH)3, and Cu2DS(OH)3). These methods are based on p-benzoquinone reduction, which increases the local pH at the working electrode and triggers the precipitation of Cu2+ and appropriate anions as Cu-HDS films on the working electrode. The resulting Cu-HDS films could be converted to crystalline Cu(OH)2 and CuO films by immersing them in basic solutions. Because Cu-HDS films were composed of 2D crystals as a result of the atomic-level layered structure of HDS, the CuO films prepared from Cu-HDS films have unique low-dimensional nanostructures, creating high surface areas that cannot be obtained by direct deposition of CuO, which has a 3D atomic-level crystal structure. The resulting nanostructures allowed the CuO films to facilitate electron-hole separation and demonstrate great promise for photocurrent generation when investigated as a photocathode for a water-splitting photoelectrochemical cell. Electrochemical synthesis of Cu-HDS films and their facile conversion to CuO films will provide new routes to tune the morphologies and properties of the CuO electrodes that may not be possible by other synthesis means.
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Affiliation(s)
- Allison C Cardiel
- Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Kenneth J McDonald
- Department of Chemistry, Purdue University , West Lafayette, Indiana 47907, United States
| | - Kyoung-Shin Choi
- Department of Chemistry, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
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183
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Odrobina J, Scholz J, Risch M, Dechert S, Jooss C, Meyer F. Chasing the Achilles’ Heel in Hybrid Systems of Diruthenium Water Oxidation Catalysts Anchored on Indium Tin Oxide: The Stability of the Anchor. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01883] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jann Odrobina
- University of Goettingen, Institute of Inorganic
Chemistry, Tammannstraße
4, D-37077 Göttingen, Germany
| | - Julius Scholz
- University of Goettingen, Institute of Materials
Physics, Friedrich-Hund-Platz
1, D-37077 Göttingen, Germany
| | - Marcel Risch
- University of Goettingen, Institute of Materials
Physics, Friedrich-Hund-Platz
1, D-37077 Göttingen, Germany
| | - Sebastian Dechert
- University of Goettingen, Institute of Inorganic
Chemistry, Tammannstraße
4, D-37077 Göttingen, Germany
| | - Christian Jooss
- University of Goettingen, Institute of Materials
Physics, Friedrich-Hund-Platz
1, D-37077 Göttingen, Germany
- University of Goettingen, International Center
for Advanced Studies of Energy Conversion (ICASEC), D-37077 Göttingen, Germany
| | - Franc Meyer
- University of Goettingen, Institute of Inorganic
Chemistry, Tammannstraße
4, D-37077 Göttingen, Germany
- University of Goettingen, International Center
for Advanced Studies of Energy Conversion (ICASEC), D-37077 Göttingen, Germany
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184
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Zhao Q, Yan Z, Chen C, Chen J. Spinels: Controlled Preparation, Oxygen Reduction/Evolution Reaction Application, and Beyond. Chem Rev 2017; 117:10121-10211. [DOI: 10.1021/acs.chemrev.7b00051] [Citation(s) in RCA: 854] [Impact Index Per Article: 122.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Qing Zhao
- Key Laboratory of Advanced
Energy Materials Chemistry (Ministry of Education), Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, China
| | - Zhenhua Yan
- Key Laboratory of Advanced
Energy Materials Chemistry (Ministry of Education), Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, China
| | - Chengcheng Chen
- Key Laboratory of Advanced
Energy Materials Chemistry (Ministry of Education), Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, China
| | - Jun Chen
- Key Laboratory of Advanced
Energy Materials Chemistry (Ministry of Education), Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, China
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185
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Xu G, Xu Z, Shi Z, Pei L, Yan S, Gu Z, Zou Z. Silicon Photoanodes Partially Covered by Ni@Ni(OH) 2 Core-Shell Particles for Photoelectrochemical Water Oxidation. CHEMSUSCHEM 2017; 10:2897-2903. [PMID: 28586139 DOI: 10.1002/cssc.201700825] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 05/27/2017] [Indexed: 06/07/2023]
Abstract
Two obstacles hindering solar energy conversion by photoelectrochemical (PEC) water-splitting devices are the charge separation and the transport efficiency at the photoanode-electrolyte interface region. Herein, core-shell-structured Ni@Ni(OH)2 nanoparticles were electrodeposited on the surface of an n-type Si photoanode. The Schottky barrier between Ni and Si is sensitive to the thickness of the Ni(OH)2 shell. The photovoltage output of the photoanode increases with increasing thickness of the Ni(OH)2 shell, and is influenced by interactions between Ni and Ni(OH)2 , the electrolyte screening effect, and the p-type nature of the Ni(OH)2 layer. Ni@Ni(OH)2 core-shell nanoparticles with appropriate shell thicknesses coupled to n-type Si photoanodes promote the separation of photogenerated carriers and improve the charge-injection efficiency to nearly 100 %. An onset potential of 1.03 V versus reversible hydrogen electrode (RHE) and a saturated current density of 36.4 mA cm-2 was obtained for the assembly.
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Affiliation(s)
- Guangzhou Xu
- Eco-materials and Renewable Energy Research Center, ERERC, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China
| | - Zhe Xu
- Eco-materials and Renewable Energy Research Center, ERERC, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China
| | - Zhan Shi
- Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China
| | - Lang Pei
- Eco-materials and Renewable Energy Research Center, ERERC, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China
| | - Shicheng Yan
- Eco-materials and Renewable Energy Research Center, ERERC, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China
| | - Zhengbin Gu
- Eco-materials and Renewable Energy Research Center, ERERC, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China
| | - Zhigang Zou
- Eco-materials and Renewable Energy Research Center, ERERC, Collaborative Innovation Center of Advanced Microstructures, College of Engineering and Applied Sciences, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China
- Jiangsu Key Laboratory for Nano Technology, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, No. 22, Hankou Road, Nanjing, Jiangsu, 210093, P.R. China
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186
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Maliy L, Mamaev A, Mamaeva V. Electrochemical high-energy deposition of CdSe nanostructures: modelling, synthesis and characterization. J APPL ELECTROCHEM 2017. [DOI: 10.1007/s10800-017-1106-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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187
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Wang M, Han Q, Li L, Tang L, Li H, Zhou Y, Zou Z. Construction of an all-solid-state artificial Z-scheme system consisting of Bi 2WO 6/Au/CdS nanostructure for photocatalytic CO 2 reduction into renewable hydrocarbon fuel. NANOTECHNOLOGY 2017; 28:274002. [PMID: 28616938 DOI: 10.1088/1361-6528/aa6bb5] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
An all-solid-state Bi2WO6/Au/CdS Z-scheme system was constructed for the photocatalytic reduction of CO2 into methane in the presence of water vapor. This Z-scheme consists of ultrathin Bi2WO6 nanoplates and CdS nanoparticles as photocatalysts, and a Au nanoparticle as a solid electron mediator offering a high speed charge transfer channel and leading to more efficient spatial separation of electron-hole pairs. The photo-generated electrons from the conduction band (CB) of Bi2WO6 transfer to the Au, and then release to the valence band (VB) of CdS to recombine with the holes of CdS. It allows the electrons remaining in the CB of CdS and holes in the VB of Bi2WO6 to possess strong reduction and oxidation powers, respectively, leading the Bi2WO6/Au/CdS to exhibit high photocatalytic reduction of CO2, relative to bare Bi2WO6, Bi2WO6/Au, and Bi2WO6/CdS. The depressed hole density on CdS also enhances the stability of the CdS against photocorrosion.
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Affiliation(s)
- Meng Wang
- National Laboratory of Solid State Microstructures, Department of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210093, People's Republic of China. Jiangsu Key Laboratory for Nano Technology, Nanjing University, Nanjing 210093, People's Republic of China. Eco-materials and Renewable Energy Research Center (ERERC), Nanjing University, Nanjing 210093, People's Republic of China
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188
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Huynh M, Ozel T, Liu C, Lau EC, Nocera DG. Design of template-stabilized active and earth-abundant oxygen evolution catalysts in acid. Chem Sci 2017; 8:4779-4794. [PMID: 29163926 PMCID: PMC5637126 DOI: 10.1039/c7sc01239j] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Accepted: 05/05/2017] [Indexed: 12/24/2022] Open
Abstract
Oxygen evolution reaction (OER) catalysts that are earth-abundant and are active and stable in acid are unknown. Active catalysts derived from Co and Ni oxides dissolve at low pH, whereas acid stable systems such as Mn oxides (MnO x ) display poor OER activity. We now demonstrate a rational approach for the design of earth-abundant catalysts that are stable and active in acid by treating activity and stability as decoupled elements of mixed metal oxides. Manganese serves as a stabilizing structural element for catalytically active Co centers in CoMnO x films. In acidic solutions (pH 2.5), CoMnO x exhibits the OER activity of electrodeposited Co oxide (CoO x ) with a Tafel slope of 70-80 mV per decade while also retaining the long-term acid stability of MnO x films for OER at 0.1 mA cm-2. Driving OER at greater current densities in this system is not viable because at high anodic potentials, Mn oxides convert to and dissolve as permanganate. However, by exploiting the decoupled design of the catalyst, the stabilizing structural element may be optimized independently of the Co active sites. By screening potential-pH diagrams, we replaced Mn with Pb to prepare CoFePbO x films that maintained the high OER activity of CoO x at pH 2.5 while exhibiting long-term acid stability at higher current densities (at 1 mA cm-2 for over 50 h at pH 2.0). Under these acidic conditions, CoFePbO x exhibits OER activity that approaches noble metal oxides, thus establishing the viability of decoupling functionality in mixed metal catalysts for designing active, acid-stable, and earth-abundant OER catalysts.
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Affiliation(s)
- Michael Huynh
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , USA .
| | - Tuncay Ozel
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , USA .
| | - Chong Liu
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , USA .
| | - Eric C Lau
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , USA .
| | - Daniel G Nocera
- Department of Chemistry and Chemical Biology , Harvard University , Cambridge , Massachusetts 02138 , USA .
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189
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Hollmann D, Rockstroh N, Grabow K, Bentrup U, Rabeah J, Polyakov M, Surkus AE, Schuhmann W, Hoch S, Brückner A. From the Precursor to the Active State: Monitoring Metamorphosis of Electrocatalysts During Water Oxidation by In Situ
Spectroscopy. ChemElectroChem 2017. [DOI: 10.1002/celc.201700142] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Dirk Hollmann
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT); Albert Einstein-Straße 29A 18059 Rostock Germany
| | - Nils Rockstroh
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT); Albert Einstein-Straße 29A 18059 Rostock Germany
| | - Kathleen Grabow
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT); Albert Einstein-Straße 29A 18059 Rostock Germany
| | - Ursula Bentrup
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT); Albert Einstein-Straße 29A 18059 Rostock Germany
| | - Jabor Rabeah
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT); Albert Einstein-Straße 29A 18059 Rostock Germany
| | - Mykola Polyakov
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT); Albert Einstein-Straße 29A 18059 Rostock Germany
| | - Annette-Enrica Surkus
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT); Albert Einstein-Straße 29A 18059 Rostock Germany
| | - Wolfgang Schuhmann
- Analytical Chemistry and Center for Electrochemical Sciences (CES); Ruhr-University Bochum; Universitätsstraße 150 44780 Bochum Germany
| | - Sascha Hoch
- Evonik Creavis GmbH; Paul-Baumann-Straße 1 45772 Marl Germany
| | - Angelika Brückner
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock (LIKAT); Albert Einstein-Straße 29A 18059 Rostock Germany
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190
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You B, Liu X, Liu X, Sun Y. Efficient H2 Evolution Coupled with Oxidative Refining of Alcohols via A Hierarchically Porous Nickel Bifunctional Electrocatalyst. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00876] [Citation(s) in RCA: 204] [Impact Index Per Article: 29.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Bo You
- Department
of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Xuan Liu
- Department
of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
| | - Xin Liu
- Department
of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
- Key
Laboratory of Comprehensive and Highly Efficient Utilization of Salt
Lake Resources, Chinese Academy of Sciences, 18 Xinning Road, Xi’ning, Qinghai 810008, People’s Republic of China
| | - Yujie Sun
- Department
of Chemistry and Biochemistry, Utah State University, Logan, Utah 84322, United States
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191
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Wang S, Chen P, Yun JH, Hu Y, Wang L. An Electrochemically Treated BiVO4
Photoanode for Efficient Photoelectrochemical Water Splitting. Angew Chem Int Ed Engl 2017; 56:8500-8504. [DOI: 10.1002/anie.201703491] [Citation(s) in RCA: 292] [Impact Index Per Article: 41.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Indexed: 01/05/2023]
Affiliation(s)
- Songcan Wang
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
| | - Peng Chen
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
| | - Jung-Ho Yun
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
| | - Yuxiang Hu
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
| | - Lianzhou Wang
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
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192
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Wang S, Chen P, Yun JH, Hu Y, Wang L. An Electrochemically Treated BiVO4
Photoanode for Efficient Photoelectrochemical Water Splitting. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703491] [Citation(s) in RCA: 80] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Songcan Wang
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
| | - Peng Chen
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
| | - Jung-Ho Yun
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
| | - Yuxiang Hu
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
| | - Lianzhou Wang
- Nanomaterials Centre; School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology; The University of Queensland; QLD 4072 Australia
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193
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Han S, Liu S, Wang R, Liu X, Bai L, He Z. One-Step Electrodeposition of Nanocrystalline Zn xCo 3-xO 4 Films with High Activity and Stability for Electrocatalytic Oxygen Evolution. ACS APPLIED MATERIALS & INTERFACES 2017; 9:17186-17194. [PMID: 28467838 DOI: 10.1021/acsami.7b04841] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The development of highly active, environmentally friendly, and long-term stable oxygen evolving catalysts at low costs is critical for efficient and scalable H2 production from water splitting. Here, we report a new and facile one-step electrodeposition of nanocrystalline spinel-type ZnxCo3-xO4 films from an alkaline Zn2+-Co2+-tartrate solution. The electrodeposited ZnxCo3-xO4 electrode could be directly used as the anode for the water electrolysis without any post treatment. The ZnxCo3-xO4 film shows a low and stable overpotential of ∼0.33 V at 10 mA cm-2 (and ∼0.35 V at 20 mA cm-2) for over 10 h and a Tafel slope of ∼39 mV dec-1 toward the oxygen evolution reaction (OER) in 1 M NaOH, comparable to the best performance of the nonprecious OER catalysts reported for alkaline media. The enhanced OER activity of ZnxCo3-xO4 compared to Co3O4 could be attributed to the surface structural modification and higher density of the accessible active Co3+ sites induced by the incorporation of Zn2+. The electrodeposition method in this paper could also be used to synthesize other binary and ternary metal oxide based catalytic electrodes for reactions such as the OER and oxygen reduction reaction (ORR).
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Affiliation(s)
- Shan Han
- College of Chemistry and Chemical Engineering and ‡Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University , Changsha, Hunan 410083, P.R. China
| | - Suqin Liu
- College of Chemistry and Chemical Engineering and ‡Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University , Changsha, Hunan 410083, P.R. China
| | - Rui Wang
- College of Chemistry and Chemical Engineering and ‡Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University , Changsha, Hunan 410083, P.R. China
| | - Xuan Liu
- College of Chemistry and Chemical Engineering and ‡Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University , Changsha, Hunan 410083, P.R. China
| | - Lu Bai
- College of Chemistry and Chemical Engineering and ‡Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University , Changsha, Hunan 410083, P.R. China
| | - Zhen He
- College of Chemistry and Chemical Engineering and ‡Innovation Base of Energy and Chemical Materials for Graduate Students Training, Central South University , Changsha, Hunan 410083, P.R. China
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194
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Hydrodynamics and Oxygen Bubble Characterization of Catalytic Cells Used in Artificial Photosynthesis by Means of CFD. FLUIDS 2017. [DOI: 10.3390/fluids2020025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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195
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Hilliard S, Friedrich D, Kressman S, Strub H, Artero V, Laberty-Robert C. Solar-Water-Splitting BiVO4
Thin-Film Photoanodes Prepared By Using a Sol-Gel Dip-Coating Technique. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201700003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Samantha Hilliard
- College de France; Laboratoire Chimie de la Matiere Condensee de Paris; 11 place Marcelin Berthelot, Bat C-D Paris Cedex 05 31062 France
| | - Dennis Friedrich
- Helmholtz-Zentrum Berlin für Materialien und Energie Gmbh; Institute for Solar Fuels; Hahn-Meitner-Platz 1 14109 Berlin Germany
| | - Stéphane Kressman
- Total Energies Nouvelles; La Défense; 24 Cours Michelet 92800 Puteaux France
| | - Henri Strub
- Total Energies Nouvelles; La Défense; 24 Cours Michelet 92800 Puteaux France
| | - Vincent Artero
- Laboratoire de Chimie et Biologie des Métaux; Université Grenoble Alpes/ CNRS UMR 5249; 17, rue des Martyrs 3800 Grenoble France
| | - Christel Laberty-Robert
- College de France; Laboratoire Chimie de la Matiere Condensee de Paris; 11 place Marcelin Berthelot, Bat C-D Paris Cedex 05 31062 France
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196
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Photoelectrochemical deposition of CoP on cuprous oxide photocathodes for solar hydrogen production. Electrochim Acta 2017. [DOI: 10.1016/j.electacta.2017.03.074] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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197
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Nevárez-Martínez MC, Mazierski P, Kobylański MP, Szczepańska G, Trykowski G, Malankowska A, Kozak M, Espinoza-Montero PJ, Zaleska-Medynska A. Growth, Structure, and Photocatalytic Properties of Hierarchical V₂O₅-TiO₂ Nanotube Arrays Obtained from the One-step Anodic Oxidation of Ti-V Alloys. Molecules 2017; 22:E580. [PMID: 28379185 PMCID: PMC6154676 DOI: 10.3390/molecules22040580] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2017] [Revised: 03/30/2017] [Accepted: 04/01/2017] [Indexed: 11/19/2022] Open
Abstract
V₂O₅-TiO₂ mixed oxide nanotube (NT) layers were successfully prepared via the one-step anodization of Ti-V alloys. The obtained samples were characterized by scanning electron microscopy (SEM), UV-Vis absorption, photoluminescence spectroscopy, energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (DRX), and micro-Raman spectroscopy. The effect of the applied voltage (30-50 V), vanadium content (5-15 wt %) in the alloy, and water content (2-10 vol %) in an ethylene glycol-based electrolyte was studied systematically to determine their influence on the morphology, and for the first-time, on the photocatalytic properties of these nanomaterials. The morphology of the samples varied from sponge-like to highly-organized nanotubular structures. The vanadium content in the alloy was found to have the highest influence on the morphology and the sample with the lowest vanadium content (5 wt %) exhibited the best auto-alignment and self-organization (length = 1 μm, diameter = 86 nm and wall thickness = 11 nm). Additionally, a probable growth mechanism of V₂O₅-TiO₂ nanotubes (NTs) over the Ti-V alloys was presented. Toluene, in the gas phase, was effectively removed through photodegradation under visible light (LEDs, λmax = 465 nm) in the presence of the modified TiO₂ nanostructures. The highest degradation value was 35% after 60 min of irradiation. V₂O₅ species were ascribed as the main structures responsible for the generation of photoactive e- and h⁺ under Vis light and a possible excitation mechanism was proposed.
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Affiliation(s)
- María C Nevárez-Martínez
- Facultad de Ingeniería Química y Agroindustria, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, P.O. Box 17-01-2759, Quito 170525, Ecuador.
- Centro de Investigación y Control Ambiental "CICAM", Departamento de Ingeniería Civil y Ambiental, Facultad de Ingeniería Civil y Ambiental, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, P.O. Box 17-01-2759, Quito 170525, Ecuador.
| | - Paweł Mazierski
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, Gdansk 80-308, Poland.
| | - Marek P Kobylański
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, Gdansk 80-308, Poland.
| | | | - Grzegorz Trykowski
- Faculty of Chemistry, Nicolaus Copernicus University, Torun 87-100, Poland.
| | - Anna Malankowska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, Gdansk 80-308, Poland.
| | - Magda Kozak
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, Gdansk 80-308, Poland.
| | - Patricio J Espinoza-Montero
- Centro de Investigación y Control Ambiental "CICAM", Departamento de Ingeniería Civil y Ambiental, Facultad de Ingeniería Civil y Ambiental, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, P.O. Box 17-01-2759, Quito 170525, Ecuador.
| | - Adriana Zaleska-Medynska
- Department of Environmental Technology, Faculty of Chemistry, University of Gdansk, Gdansk 80-308, Poland.
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Self-Organized TiO₂-MnO₂ Nanotube Arrays for Efficient Photocatalytic Degradation of Toluene. Molecules 2017; 22:molecules22040564. [PMID: 28362359 PMCID: PMC6154631 DOI: 10.3390/molecules22040564] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Revised: 03/27/2017] [Accepted: 03/28/2017] [Indexed: 11/16/2022] Open
Abstract
Vertically oriented, self-organized TiO₂-MnO₂ nanotube arrays were successfully obtained by one-step anodic oxidation of Ti-Mn alloys in an ethylene glycol-based electrolyte. The as-prepared samples were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), UV-Vis absorption, photoluminescence spectroscopy, X-ray diffraction (XRD), and micro-Raman spectroscopy. The effect of the applied potential (30-50 V), manganese content in the alloy (5-15 wt. %) and water content in the electrolyte (2-10 vol. %) on the morphology and photocatalytic properties was investigated for the first time. The photoactivity was assessed in the toluene removal reaction under visible light, using low-powered LEDs as an irradiation source (λmax = 465 nm). Morphology analysis showed that samples consisted of auto-aligned nanotubes over the surface of the alloy, their dimensions were: diameter = 76-118 nm, length = 1.0-3.4 μm and wall thickness = 8-11 nm. It was found that the increase in the applied potential led to increase the dimensions while the increase in the content of manganese in the alloy brought to shorter nanotubes. Notably, all samples were photoactive under the influence of visible light and the highest degradation achieved after 60 min of irradiation was 43%. The excitation mechanism of TiO₂-MnO₂ NTs under visible light was presented, pointing out the importance of MnO₂ species for the generation of e- and h⁺.
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Odrobina J, Scholz J, Pannwitz A, Francàs L, Dechert S, Llobet A, Jooss C, Meyer F. Backbone Immobilization of the Bis(bipyridyl)pyrazolate Diruthenium Catalyst for Electrochemical Water Oxidation. ACS Catal 2017. [DOI: 10.1021/acscatal.6b02860] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jann Odrobina
- Institute
of Inorganic Chemistry, Georg-August-University, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Julius Scholz
- Institute
for Materials Physics, Georg-August-University, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany
| | - Andrea Pannwitz
- Institute
of Inorganic Chemistry, Georg-August-University, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Laia Francàs
- Institute of Chemical
Research of Catalonia (ICIQ), Av. Països
Catalans 16, E-43007 Tarragona, Spain
| | - Sebastian Dechert
- Institute
of Inorganic Chemistry, Georg-August-University, Tammannstraße 4, D-37077 Göttingen, Germany
| | - Antoni Llobet
- Institute of Chemical
Research of Catalonia (ICIQ), Av. Països
Catalans 16, E-43007 Tarragona, Spain
- Departament
de Química, Universitat Autònoma de Barcelona, 08460 Cerdanyola del Vallès, Barcelona, Spain
| | - Christian Jooss
- Institute
for Materials Physics, Georg-August-University, Friedrich-Hund-Platz 1, D-37077 Göttingen, Germany
- International
Center for Advanced Studies of Energy Conversion (ICASEC), Georg-August-University, D-37077 Göttingen, Germany
| | - Franc Meyer
- Institute
of Inorganic Chemistry, Georg-August-University, Tammannstraße 4, D-37077 Göttingen, Germany
- International
Center for Advanced Studies of Energy Conversion (ICASEC), Georg-August-University, D-37077 Göttingen, Germany
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200
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Liu P, Liang R, Lu L, Yu Z, Li F. Use of a Cyclometalated Iridium(III) Complex Containing a N∧C∧N-Coordinating Terdentate Ligand as a Catalyst for the α-Alkylation of Ketones and N-Alkylation of Amines with Alcohols. J Org Chem 2017; 82:1943-1950. [DOI: 10.1021/acs.joc.6b02758] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Pengcheng Liu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Ran Liang
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Lei Lu
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
| | - Zhentao Yu
- Jiangsu
Key Laboratory for Nano Technology, College of Engineering and Applied
Science, Nanjing University, Nanjing 210093, People’s Republic of China
| | - Feng Li
- School of Chemical Engineering, Nanjing University of Science & Technology, Nanjing 210094, People’s Republic of China
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