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Abd Rahman N, Choong CE, Pichiah S, Nah IW, Kim JR, Oh SE, Yoon Y, Choi EH, Jang M. Recent advances in the TiO2 based photoreactors for removing contaminants of emerging concern in water. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2022.122294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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2
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Photocatalytic ceramic membrane: Effect of the illumination intensity and distribution. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114469] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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Wei X, Liu H, Gao S, Jia K, Wang Z, Chen J. Photocatalyst: To Be Dispersed or To Be Immobilized? The Crucial Role of Electron Transport in Photocatalytic Fixed Bed Reaction. J Phys Chem Lett 2022; 13:9642-9648. [PMID: 36214491 DOI: 10.1021/acs.jpclett.2c02581] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Photocatalytic fixed bed reactors allow a straightforward separation from the process stream and simplify the installation and operation in practical application. However, it is widely believed that the restriction on mass transport and volume activation severely slows the reaction. Here, we demonstrate that photocatalytic fixed bed reactors can deliver a superior reaction rate to the slurry suspension by rationally modulating the electronic process and the most concerning issue of mass transport occurring on a decisecond time scale does not retard the reaction. Although the long-distance transport of photogenerated electrons in porous semiconductor films toward catalytic sites encounters boundary scattering, this electronic process can be far faster than semiconductor-cocatalyst interfacial electron transfer occurring on the decisecond-second time scale. Besides, the fixed bed reaction can be freely amplified without losing photon utilization. Under irradiation provided by a 320 W Hg lamp, we realize a reaction rate of 0.262 mol/h with 65.2% quantum yield for anaerobic dehydrogenation of ethanol.
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Affiliation(s)
- Xuhui Wei
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan030001, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
| | - Haifeng Liu
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan030001, China
| | - Shugong Gao
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan030001, China
| | - Kun Jia
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan030001, China
| | - Zhijian Wang
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan030001, China
| | - Jiazang Chen
- State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan030001, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing100049, China
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Dai B, Zhou Y, Xiao X, Chen Y, Guo J, Gao C, Xie Y, Chen J. Fluid Field Modulation in Mass Transfer for Efficient Photocatalysis. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203057. [PMID: 35957518 PMCID: PMC9534979 DOI: 10.1002/advs.202203057] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 07/15/2022] [Indexed: 05/19/2023]
Abstract
Mass transfer is an essential factor determining photocatalytic performance, which can be modulated by fluid field via manipulating the kinetic characteristics of photocatalysts and photocatalytic intermediates. Past decades have witnessed the efforts and achievements made in manipulating mass transfer based on photocatalyst structure and composition design, and thus, a critical survey that scrutinizes the recent progress in this topic is urgently necessitated. This review examines the basic principles of how mass transfer behavior impacts photocatalytic activity accompanying with the discussion on theoretical simulation calculation including fluid flow speed and pattern. Meanwhile, newly emerged viable photocatalytic micro/nanomotors with self-thermophoresis, self-diffusiophoresis, and bubble-propulsion mechanisms as well as magnet-actuated photocatalytic artificial cilia for facilitating mass transfer will be covered. Furthermore, their applications in photocatalytic hydrogen evolution, carbon dioxide reduction, organic pollution degradation, bacteria disinfection and so forth are scrutinized. Finally, a brief summary and future outlook are presented, providing a viable guideline to those working in photocatalysis, mass transfer, and other related fields.
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Affiliation(s)
- Baoying Dai
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)Jiangsu Key Laboratory for BiosensorsJiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts and TelecommunicationsNanjing210023China
| | - Yihao Zhou
- Department of BioengineeringUniversity of California, Los AngelesLos AngelesCA90095USA
| | - Xiao Xiao
- Department of BioengineeringUniversity of California, Los AngelesLos AngelesCA90095USA
| | - Yukai Chen
- State Key Laboratory of Materials‐Oriented Chemical EngineeringCollege of Materials Science and EngineeringNanjing Tech UniversityNanjing210009China
| | - Jiahao Guo
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)Jiangsu Key Laboratory for BiosensorsJiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts and TelecommunicationsNanjing210023China
| | - Chenchen Gao
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)Jiangsu Key Laboratory for BiosensorsJiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts and TelecommunicationsNanjing210023China
| | - Yannan Xie
- State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM)Jiangsu Key Laboratory for BiosensorsJiangsu National Synergetic Innovation Center for Advanced Materials (SICAM)Nanjing University of Posts and TelecommunicationsNanjing210023China
| | - Jun Chen
- Department of BioengineeringUniversity of California, Los AngelesLos AngelesCA90095USA
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Skillen N, Daly H, Lan L, Aljohani M, Murnaghan CWJ, Fan X, Hardacre C, Sheldrake GN, Robertson PKJ. Photocatalytic Reforming of Biomass: What Role Will the Technology Play in Future Energy Systems. Top Curr Chem (Cham) 2022; 380:33. [PMID: 35717466 PMCID: PMC9206627 DOI: 10.1007/s41061-022-00391-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 05/27/2022] [Indexed: 11/03/2022]
Abstract
Photocatalytic reforming of biomass has emerged as an area of significant interest within the last decade. The number of papers published in the literature has been steadily increasing with keywords such as 'hydrogen' and 'visible' becoming prominent research topics. There are likely two primary drivers behind this, the first of which is that biomass represents a more sustainable photocatalytic feedstock for reforming to value-added products and energy. The second is the transition towards achieving net zero emission targets, which has increased focus on the development of technologies that could play a role in future energy systems. Therefore, this review provides a perspective on not only the current state of the research but also a future outlook on the potential roadmap for photocatalytic reforming of biomass. Producing energy via photocatalytic biomass reforming is very desirable due to the ambient operating conditions and potential to utilise renewable energy (e.g., solar) with a wide variety of biomass resources. As both interest and development within this field continues to grow, however, there are challenges being identified that are paramount to further advancement. In reviewing both the literature and trajectory of the field, research priorities can be identified and utilised to facilitate fundamental research alongside whole systems evaluation. Moreover, this would underpin the enhancement of photocatalytic technology with a view towards improving the technology readiness level and promoting engagement between academia and industry.
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Affiliation(s)
- Nathan Skillen
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AL, UK.
| | - Helen Daly
- Department of Chemical Engineering, School of Engineering, The University of Manchester, Oxford Road, Manchester, M13 9P3AL, UK
| | - Lan Lan
- Department of Chemical Engineering, School of Engineering, The University of Manchester, Oxford Road, Manchester, M13 9P3AL, UK
| | - Meshal Aljohani
- Department of Chemical Engineering, School of Engineering, The University of Manchester, Oxford Road, Manchester, M13 9P3AL, UK
| | - Christopher W J Murnaghan
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AL, UK
| | - Xiaolei Fan
- Department of Chemical Engineering, School of Engineering, The University of Manchester, Oxford Road, Manchester, M13 9P3AL, UK
| | - Christopher Hardacre
- Department of Chemical Engineering, School of Engineering, The University of Manchester, Oxford Road, Manchester, M13 9P3AL, UK
| | - Gary N Sheldrake
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AL, UK
| | - Peter K J Robertson
- School of Chemistry and Chemical Engineering, Queens University Belfast, David Keir Building, Stranmillis Road, Belfast, BT9 5AL, UK.
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Ripken RM, Wood JA, Schlautmann S, Günther A, Gardeniers HJGE, Le Gac S. Towards controlled bubble nucleation in microreactors for enhanced mass transport. REACT CHEM ENG 2021. [DOI: 10.1039/d1re00092f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The exact location of bubbles with respect to the catalytic layer impacts the microreactor performance. In this work, we propose to control bubble nucleation using micropits to maximize the microreactor efficiency.
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Affiliation(s)
- Renée M. Ripken
- Applied Microfluidics for BioEngineering Research, MESA+ Institute for Nanotechnology, TechMed Centre, University of Twente, P.O Box 217, 7500 AE, Enschede, The Netherlands
- Mesoscale Chemical Systems, MESA+ Institute for Nanotechnology, University of Twente, P.O Box 217, 7500 AE, Enschede, The Netherlands
| | - Jeffery A. Wood
- Soft Matter, Fluidics and Interfaces, MESA+ Institute for Nanotechnology, University of Twente, P.O Box 217, 7500 AE, Enschede, The Netherlands
| | - Stefan Schlautmann
- Mesoscale Chemical Systems, MESA+ Institute for Nanotechnology, University of Twente, P.O Box 217, 7500 AE, Enschede, The Netherlands
| | - Axel Günther
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, ON M5S 3G8, Canada
- Institute of Biomedical Engineering, University of Toronto, 164 College Street, Toronto, ON, M5S 3G9, Canada
| | - Han J. G. E. Gardeniers
- Mesoscale Chemical Systems, MESA+ Institute for Nanotechnology, University of Twente, P.O Box 217, 7500 AE, Enschede, The Netherlands
| | - Séverine Le Gac
- Applied Microfluidics for BioEngineering Research, MESA+ Institute for Nanotechnology, TechMed Centre, University of Twente, P.O Box 217, 7500 AE, Enschede, The Netherlands
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