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Quesada-Cabrera R, Parkin IP. Qualitative Approaches Towards Useful Photocatalytic Materials. Front Chem 2020; 8:817. [PMID: 33024744 PMCID: PMC7516336 DOI: 10.3389/fchem.2020.00817] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 08/04/2020] [Indexed: 11/13/2022] Open
Abstract
The long-standing crusade searching for efficient photocatalytic materials has resulted in a vast landscape of promising photocatalysts, as reflected by the number of reviews reported in the last decade. Virtually all of these reviews have focused on quantitative approaches aiming at developing an understanding of the underlying mechanisms behind photocatalytic behavior and the parameters that influence structure–function correlation. Less attention has been paid, however, to qualitative measures around the development and assessment of photocatalysts. These measures will contribute toward narrowing the range of potential photocatalytic materials for widespread applications. The current report provides a critical perspective over some of the main factors affecting the assessment of photocatalytic materials as a code of good practice. A case of study is also provided, where this qualitative analysis is applied to one of the most prolific materials of the last-decade, disorder-engineered, black titanium dioxide (TiO2).
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Affiliation(s)
- Raul Quesada-Cabrera
- Christopher-Ingold Laboratories, Materials Chemistry Center, Department of Chemistry, UCL (University College London), London, United Kingdom
| | - Ivan P Parkin
- Christopher-Ingold Laboratories, Materials Chemistry Center, Department of Chemistry, UCL (University College London), London, United Kingdom
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Rath T, Uhrich A, Lüken A, Zhao G, Rittermeier A, Muhler M. Cl 2 Production by Photocatalytic Oxidation of HCl over TiO 2. CHEMSUSCHEM 2019; 12:2725-2731. [PMID: 31012995 DOI: 10.1002/cssc.201900642] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/15/2019] [Indexed: 06/09/2023]
Abstract
We studied the photocatalytic aerobic oxidation of HCl over TiO2 for producing Cl2 . Steady-state Cl2 production rates were determined with a photocatalytic fixed-bed gas-phase reactor equipped with UV light-emitting diodes (LEDs) using iodometric titration as online analytics. We found stable Cl2 production rates of up to 16 mmol h-1 m-2 for commercial anatase TiO2 Hombikat UV100. The rate increased linearly with temperature from 21 to 140 °C, indicating the acceleration of the limiting desorption rate of the coupled product water. Comparing different TiO2 polymorphs revealed that anatase possesses higher activity than rutile. The adsorption of HCl was monitored in situ by IR spectroscopy. The IR spectra indicated that HCl chemisorption chlorinates the surface of TiO2 under the reaction conditions, suggesting it to be the first step of the reaction mechanism. High stability opens up the opportunity of developing a promising photocatalytic process of HCl recycling at lower temperatures suitable for reaching full conversion.
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Affiliation(s)
- Tobias Rath
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, 44780, Bochum, Germany
| | - Andrej Uhrich
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, 44780, Bochum, Germany
| | | | - Guixia Zhao
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, 44780, Bochum, Germany
| | - André Rittermeier
- Covestro (Deutschland) AG, 41540, Dormagen, Germany
- Covestro Polymers Co., Ltd., Shanghai, China
| | - Martin Muhler
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, 44780, Bochum, Germany
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3
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Parrino F, Bellardita M, García-López EI, Marcì G, Loddo V, Palmisano L. Heterogeneous Photocatalysis for Selective Formation of High-Value-Added Molecules: Some Chemical and Engineering Aspects. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03093] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- F. Parrino
- “Schiavello-Grillone” Photocatalysis Group, University of Palermo, Department of Energy, Information Engineering and Mathematical Models (DEIM), Viale delle Scienze, 90128 Palermo, Italy
| | - M. Bellardita
- “Schiavello-Grillone” Photocatalysis Group, University of Palermo, Department of Energy, Information Engineering and Mathematical Models (DEIM), Viale delle Scienze, 90128 Palermo, Italy
| | - E. I. García-López
- “Schiavello-Grillone” Photocatalysis Group, University of Palermo, Department of Energy, Information Engineering and Mathematical Models (DEIM), Viale delle Scienze, 90128 Palermo, Italy
| | - G. Marcì
- “Schiavello-Grillone” Photocatalysis Group, University of Palermo, Department of Energy, Information Engineering and Mathematical Models (DEIM), Viale delle Scienze, 90128 Palermo, Italy
| | - V. Loddo
- “Schiavello-Grillone” Photocatalysis Group, University of Palermo, Department of Energy, Information Engineering and Mathematical Models (DEIM), Viale delle Scienze, 90128 Palermo, Italy
| | - L. Palmisano
- “Schiavello-Grillone” Photocatalysis Group, University of Palermo, Department of Energy, Information Engineering and Mathematical Models (DEIM), Viale delle Scienze, 90128 Palermo, Italy
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Kou J, Lu C, Wang J, Chen Y, Xu Z, Varma RS. Selectivity Enhancement in Heterogeneous Photocatalytic Transformations. Chem Rev 2017; 117:1445-1514. [DOI: 10.1021/acs.chemrev.6b00396] [Citation(s) in RCA: 511] [Impact Index Per Article: 73.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | | | | | | | - Rajender S. Varma
- Regional
Center of Advanced Technologies and Materials, Faculty of Science,
Department of Physical Chemistry, Palacky University, Šlechtitelů
11, 783 71 Olomouc, Czech Republic
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Zhang S, Peng Y, Jiang W, Liu X, Song X, Pan B, Yu HQ. Light-triggered reversible sorption of azo dyes on titanium xerogels with photo-switchable acetylacetonato anchors. Chem Commun (Camb) 2014; 50:1086-8. [DOI: 10.1039/c3cc48362b] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Hamdy MS, Amrollahi R, Mul G. Surface Ti3+-Containing (blue) Titania: A Unique Photocatalyst with High Activity and Selectivity in Visible Light-Stimulated Selective Oxidation. ACS Catal 2012. [DOI: 10.1021/cs300593d] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Mohamed S. Hamdy
- Photocatalytic Synthesis Group,
Faculty of Science and Technology, MESA+ Institute for
Nanotechnology, University of Twente, Enschede,
The Netherlands
- Chemistry
Department, Faculty
of Science, Helwan University, Cairo, Egypt
| | - Rezvaneh Amrollahi
- Photocatalytic Synthesis Group,
Faculty of Science and Technology, MESA+ Institute for
Nanotechnology, University of Twente, Enschede,
The Netherlands
- Iran University of Science and Technology, Tehran, Iran
| | - Guido Mul
- Photocatalytic Synthesis Group,
Faculty of Science and Technology, MESA+ Institute for
Nanotechnology, University of Twente, Enschede,
The Netherlands
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Almeida AR, Berger R, Moulijn JA, Mul G. Photo-catalytic oxidation of cyclohexane over TiO2: a novel interpretation of temperature dependent performance. Phys Chem Chem Phys 2011; 13:1345-55. [DOI: 10.1039/c0cp00879f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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