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Wang J, Lu Z, Gao K, Kang X, Zhu C, Qiao F, Chen H, Li Z, Huang W, Lu G. Photocatalytic Reforming of Ethanol in the Liquid Phase Using a Ternary Composite of Rh/TiO 2/g-C 3N 4 as a Catalyst. ACS APPLIED MATERIALS & INTERFACES 2024; 16:49371-49379. [PMID: 39230483 DOI: 10.1021/acsami.4c09188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
Photocatalytic reforming of ethanol provides an effective way to produce hydrogen energy using natural and nontoxic ethanol as raw material. Developing highly efficient catalysts is central to this field. Although traditional semiconductor/metal heterostructures (e.g., Rh/TiO2) can result in relatively high catalyst performance by promoting the separation of photoinduced hot carriers, it will still be highly promising to further improve the catalytic performance via a cost-effective and convenient method. In this study, we developed a highly efficient photocatalyst for ethanol reformation by preparing a ternary composite structure of Rh/TiO2/g-C3N4. Hydrogen is the main product, and the reaction rate could reach up to 27.5 mmol g-1 h-1, which is ∼1.41-fold higher than that of Rh/TiO2. The catalytic performance here is highly dependent on the wavelength of the light illumination. Moreover, the photocatalytic reforming of ethanol and production of hydrogen were also dependent on the Rh loading and g-C3N4:TiO2 ratio in Rh/TiO2/g-C3N4 composites as well as the ethanol content in the reaction system. The mechanism of the enhanced hydrogen production in Rh/TiO2/g-C3N4 is determined as the improvement in the separation of photoinduced hot carriers. This work provides an effective photocatalyst for ethanol reforming, largely expanding its application in the field of renewable energy and interface science.
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Affiliation(s)
- Junjie Wang
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Zhihao Lu
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Kun Gao
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Xing Kang
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Chengcheng Zhu
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Furong Qiao
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Haonan Chen
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Zhuoyao Li
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
| | - Wei Huang
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
- Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University, Xi'an 710072, China
| | - Gang Lu
- School of Flexible Electronics (Future Technologies), Key Laboratory of Flexible Electronics and Institute of Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China
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Jiang N, Zhu L, Liu P, Zhang P, Gan Y, Zhao Y, Jiang Y. Laser Irradiation Synthesis of AuPd Alloy with Decreased Alloying Degree for Efficient Ethanol Oxidation Reaction. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1876. [PMID: 38673231 PMCID: PMC11052525 DOI: 10.3390/ma17081876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 04/12/2024] [Accepted: 04/16/2024] [Indexed: 04/28/2024]
Abstract
The preparation of electrocatalysts with high performance for the ethanol oxidation reaction is vital for the large-scale commercialization of direct ethanol fuel cells. Here, we successfully synthesized a high-performance electrocatalyst of a AuPd alloy with a decreased alloying degree via pulsed laser irradiation in liquids. As indicated by the experimental results, the photochemical effect-induced surficial deposition of Pd atoms, combined with the photothermal effect-induced interdiffusion of Au and Pd atoms, resulted in the formation of AuPd alloys with a decreased alloying degree. Structural characterization reveals that L-AuPd exhibits a lower degree of alloying compared to C-AuPd prepared via the conventional co-reduction method. This distinct structure endows L-AuPd with outstanding catalytic activity and stability in EOR, achieving mass and specific activities as high as 16.01 A mgPd-1 and 20.69 mA cm-2, 9.1 and 5.2 times than that of the commercial Pd/C respectively. Furthermore, L-AuPd retains 90.1% of its initial mass activity after 300 cycles. This work offers guidance for laser-assisted fabrication of efficient Pd-based catalysts in EOR.
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Affiliation(s)
- Nan Jiang
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Liye Zhu
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Peng Liu
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
| | - Pengju Zhang
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Yuqi Gan
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Yan Zhao
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
| | - Yijian Jiang
- School of Physics and Optoelectronic Engineering, Beijing University of Technology, Beijing 100124, China; (N.J.); (L.Z.); (P.L.); (P.Z.); (Y.G.); (Y.J.)
- Key Laboratory of Trans-Scale Laser Manufacturing Technology, Beijing University of Technology, Ministry of Education, Beijing 100124, China
- Beijing Engineering Research Centre of Laser Technology, Beijing University of Technology, Beijing 100124, China
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Abstract
Adsorption energy (AE) of reactive intermediate is currently the most important descriptor for electrochemical reactions (e.g., water electrolysis, hydrogen fuel cell, electrochemical nitrogen fixation, electrochemical carbon dioxide reduction, etc.), which can bridge the gap between catalyst's structure and activity. Tracing the history and evolution of AE can help to understand electrocatalysis and design optimal electrocatalysts. Focusing on oxygen electrocatalysis, this review aims to provide a comprehensive introduction on how AE is selected as the activity descriptor, the intrinsic and empirical relationships related to AE, how AE links the structure and electrocatalytic performance, the approaches to obtain AE, the strategies to improve catalytic activity by modulating AE, the extrinsic influences on AE from the environment, and the methods in circumventing linear scaling relations of AE. An outlook is provided at the end with emphasis on possible future investigation related to the obstacles existing between adsorption energy and electrocatalytic performance.
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Affiliation(s)
- Junming Zhang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Hong Bin Yang
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
| | - Daojin Zhou
- State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Center for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.,Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario M5S 1A4, Canada
| | - Bin Liu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore
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Li S, Wang L, Wu M, Sun Y, Zhu X, Wan Y. Measurable surface d charge of Pd as a descriptor for the selective hydrogenation activity of quinoline. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(20)63580-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Jedsukontorn T, Saito N, Hunsom M. Photoinduced Glycerol Oxidation over Plasmonic Au and AuM (M = Pt, Pd and Bi) Nanoparticle-Decorated TiO₂ Photocatalysts. NANOMATERIALS 2018; 8:nano8040269. [PMID: 29690645 PMCID: PMC5923599 DOI: 10.3390/nano8040269] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 04/14/2018] [Accepted: 04/19/2018] [Indexed: 01/23/2023]
Abstract
In this study, sol-immobilization was used to prepare gold nanoparticle (Au NP)-decorated titanium dioxide (TiO2) photocatalysts at different Au weight % (wt. %) loading (Aux/TiO2, where x is the Au wt. %) and Au–M NP-decorated TiO2 photocatalysts (Au3M3/TiO2), where M is bismuth (Bi), platinum (Pt) or palladium (Pd) at 3 wt. %. The Aux/TiO2 photocatalysts exhibited a stronger visible light absorption than the parent TiO2 due to the localized surface plasmon resonance effect. Increasing the Au content from 1 wt. % to 7 wt. % led to increased visible light absorption due to the increasing presence of defective structures that were capable of enhancing the photocatalytic activity of the as-prepared catalyst. The addition of Pt and Pd coupled with the Au3/TiO2 to form Au3M3/TiO2 improved the photocatalytic activity of the Au3/TiO2 photocatalyst by maximizing their light-absorption property. The Au3/TiO2, Au3Pt3/TiO2 and Au3Pd3/TiO2 photocatalysts promoted the formation of glyceraldehyde from glycerol as the principle product, while Au3Bi3/TiO2 facilitated glycolaldehyde formation as the major product. Among all the prepared photocatalysts, Au3Pd3/TiO2 exhibited the highest photocatalytic activity with a 98.75% glycerol conversion at 24 h of reaction time.
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Affiliation(s)
- Trin Jedsukontorn
- Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
| | - Nagahiro Saito
- Graduate School of Engineering & Green Mobility Collaborative Research Center, Nagoya University, Nagoya 464-8603, Japan.
| | - Mali Hunsom
- Fuels Research Center, Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
- Center of Excellence on Petrochemical and Materials Technology (PETRO-MAT), Chulalongkorn University, Bangkok 10330, Thailand.
- Associate Fellow of Royal Society of Thailand (AFRST), Sanam Suea Pa, Dusit, Bangkok 10300, Thailand.
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Cheng YF, Jiao W, Li Q, Zhang Y, Li S, Li D, Che R. Two hybrid Au-ZnO aggregates with different hierarchical structures: A comparable study in photocatalysis. J Colloid Interface Sci 2018; 509:58-67. [DOI: 10.1016/j.jcis.2017.08.077] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 08/17/2017] [Accepted: 08/22/2017] [Indexed: 12/26/2022]
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Bashir S, Idriss H. Mechanistic study of the role of Au, Pd and Au–Pd in the surface reactions of ethanol over TiO2 in the dark and under photo-excitation. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00961e] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In situ infrared spectroscopy (FTIR) and catalytic reactions are employed to explore the photo-oxidation and photo-reforming of ethanol over TiO2 and M/TiO2 (M = Au, Pd and Au–Pd) catalysts.
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Affiliation(s)
- Shahid Bashir
- SABIC Corporate Research and Development (CRD) Center at KAUST
- Thuwal
- Kingdom of Saudi Arabia
| | - Hicham Idriss
- SABIC Corporate Research and Development (CRD) Center at KAUST
- Thuwal
- Kingdom of Saudi Arabia
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Sanwald KE, Berto TF, Eisenreich W, Gutiérrez OY, Lercher JA. Catalytic routes and oxidation mechanisms in photoreforming of polyols. J Catal 2016. [DOI: 10.1016/j.jcat.2016.08.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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9
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Slow photon amplification of gas-phase ethanol photo-oxidation in titania inverse opal photonic crystals. Chem Phys 2016. [DOI: 10.1016/j.chemphys.2016.10.001] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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McCue AJ, Baker RT, Anderson JA. Acetylene hydrogenation over structured Au–Pd catalysts. Faraday Discuss 2016; 188:499-523. [DOI: 10.1039/c5fd00188a] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
AuPd nanoparticles were prepared following a methodology designed to produce core–shell structures (an Au core and a Pd shell). Characterisation suggested that slow addition of the shell metal favoured deposition onto the pre-formed core, whereas more rapid addition favoured the formation of a monometallic Pd phase in addition to some nanoparticles with the core–shell morphology. When used for the selective hydrogenation of acetylene, samples that possessed monometallic Pd particles favoured over-hydrogenation to form ethane. A sample prepared by the slow addition of a small amount of Pd resulted in the formation of a core–shell structure but with an incomplete Pd shell layer. This material exhibited a completely different product selectivity with ethylene and oligomers forming as the major products as opposed to ethane. The improved performance was thought to be as a result of the absence of Pd particles, which are capable of forming a Pd-hydride phase, with enhanced oligomer selectivity associated with reaction on uncovered Au atoms.
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Affiliation(s)
- Alan J. McCue
- Surface Chemistry and Catalysis Group
- Materials and Chemical Engineering
- School of Engineering
- University of Aberdeen
- Aberdeen
| | | | - James A. Anderson
- Surface Chemistry and Catalysis Group
- Materials and Chemical Engineering
- School of Engineering
- University of Aberdeen
- Aberdeen
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11
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Jovic V, Smith KE, Idriss H, Waterhouse GIN. Heterojunction synergies in titania-supported gold photocatalysts: implications for solar hydrogen production. CHEMSUSCHEM 2015; 8:2551-2559. [PMID: 26105614 DOI: 10.1002/cssc.201500126] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/23/2015] [Revised: 04/19/2015] [Indexed: 06/04/2023]
Abstract
The mixed-phase nature of P25 TiO2 (85 % anatase/15 % rutile) plays a key role in the high H2 production rates shown by Au/P25 TiO2 photocatalysts in alcohol/water systems. However, a full understanding of the synergistic charge transfer mechanisms between the TiO2 polymorphs that drive the high rates is yet to be realised. Here, we deconstruct P25 TiO2 into its component phases, functionalise the phases with Au nanoparticles and explore charge transfer in Au/TiO2 systems using EPR spectroscopy. EPR spectroscopy and photocatalytic data provide direct evidence that electrons excited across the rutile band gap move to anatase lattice traps through interfacial surface sites, which decreases electron-hole pair recombination and increases charge carrier availability for photoreactions. In particular, three-phase interfacial sites between Au, anatase and rutile appear to be H2 evolution "hot spots". The results isolate the origin of high photocatalytic H2 production rates seen in Au/P25 TiO2 systems.
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Affiliation(s)
- Vedran Jovic
- School of Chemical Sciences, Science Centre, Building 301, 23 Symonds Street, Auckland 92019 (New Zealand).
- The MacDiarmid Institute for Advanced Materials and Nanotechnology (New Zealand).
| | - Kevin E Smith
- School of Chemical Sciences, Science Centre, Building 301, 23 Symonds Street, Auckland 92019 (New Zealand)
- The MacDiarmid Institute for Advanced Materials and Nanotechnology (New Zealand)
- Department of Physics, Boston University, 590 Commonwealth Avenue, Boston, MA 02215 (USA)
| | - Hicham Idriss
- Corporate Research and Innovation (CRI), Saudi Basic Industries Corporation (SABIC)
| | - Geoffrey I N Waterhouse
- School of Chemical Sciences, Science Centre, Building 301, 23 Symonds Street, Auckland 92019 (New Zealand).
- The MacDiarmid Institute for Advanced Materials and Nanotechnology (New Zealand).
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