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Shakiba M, Akimov AV. Machine-Learned Kohn-Sham Hamiltonian Mapping for Nonadiabatic Molecular Dynamics. J Chem Theory Comput 2024; 20:2992-3007. [PMID: 38581699 DOI: 10.1021/acs.jctc.4c00008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2024]
Abstract
In this work, we report a simple, efficient, and scalable machine-learning (ML) approach for mapping non-self-consistent Kohn-Sham Hamiltonians constructed with one kind of density functional to the nearly self-consistent Hamiltonians constructed with another kind of density functional. This approach is designed as a fast surrogate Hamiltonian calculator for use in long nonadiabatic dynamics simulations of large atomistic systems. In this approach, the input and output features are Hamiltonian matrices computed from different levels of theory. We demonstrate that the developed ML-based Hamiltonian mapping method (1) speeds up the calculations by several orders of magnitude, (2) is conceptually simpler than alternative ML approaches, (3) is applicable to different systems and sizes and can be used for mapping Hamiltonians constructed with arbitrary density functionals, (4) requires a modest training data, learns fast, and generates molecular orbitals and their energies with the accuracy nearly matching that of conventional calculations, and (5) when applied to nonadiabatic dynamics simulation of excitation energy relaxation in large systems yields the corresponding time scales within the margin of error of the conventional calculations. Using this approach, we explore the excitation energy relaxation in C60 fullerene and Si75H64 quantum dot structures and derive qualitative and quantitative insights into dynamics in these systems.
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Affiliation(s)
- Mohammad Shakiba
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
| | - Alexey V Akimov
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260, United States
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Engineered 2D Metal Oxides for Photocatalysis as Environmental Remediation: A Theoretical Perspective. Catalysts 2022. [DOI: 10.3390/catal12121613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Modern-day society requires advanced technologies based on renewable and sustainable energy resources to meet environmental remediation challenges. Solar-inspired photocatalytic applications such as water splitting, hydrogen evolution reaction (HER), and carbon dioxide reduction reaction (CO2RR) are unique solutions based on green and efficient technologies. Considering the special electronic features and larger surface area, two-dimensional (2D) materials, especially metal oxides (MOs), have been broadly explored for the abovementioned applications in the past few years. However, their photocatalytic potential has not been optimized yet to the level required for practical and commercial applications. Among many strategies available, defect engineering, including cation and anion vacancy creations, can potentially boost the photocatalytic performance of 2D MOs. This mini-review covers recent advancements in 2D engineered materials for various photocatalysis applications such as H2O2 oxidation, HER, and CO2RR for environmental remediation from theoretical perspectives. By thoroughly addressing the fundamental aspects, recent developments, and associated challenges—the author’s recommendations in compliance with future challenges and prospects will pave the way for readers.
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Song Q, Hu J, Zhou Y, Ye Q, Shi X, Li D, Jiang D. Carbon vacancy-mediated exciton dissociation in Ti 3C 2T x/g-C 3N 4 Schottky junctions for efficient photoreduction of CO 2. J Colloid Interface Sci 2022; 623:487-499. [PMID: 35597018 DOI: 10.1016/j.jcis.2022.05.064] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 12/18/2022]
Abstract
Earth-abundant g-C3N4 is a promising photocatalyst for CO2 reduction, but its practical application is severely limited by the excitonic effect of g-C3N4 derived from strong binding energy and lack of electron-enriched active sites. Herein, we design a novel 2D/2D Schottky junction photocatalysts comprising of Ti3C2Tx-modified defective g-C3N4 nanosheets with carbon vacancy (denoted as Ti3C2Tx/Vc-CN) by a self-assembly method. The carbon vacancies in g-C3N4 promote exciton dissociation into free charge, while the formed Schottky junctions between Ti3C2Tx and Vc-CN further enables a directional charge transfer, thus providing an electron-rich catalytic surface for the CO2 reduction. Thanks to the synergy of promoted exciton dissociation and directional electron transfer, the optimal 20% Ti3C2Tx/Vc-CN display a high CO evolution rate of 20.54 µmol·g-1·h-1 under visible light irradiation, which is 7.4 times higher than that of bare CN. This work highlights the synergy of the promoted exciton dissociation and directional electron transfer in the activity enhancement of photocatalytic CO2 reduction.
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Affiliation(s)
- Qi Song
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Jiahui Hu
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Yimeng Zhou
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Qianjin Ye
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Xiangli Shi
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Di Li
- Institute for Energy Research, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China
| | - Deli Jiang
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang 212013, China.
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Sato S, Tanaka S, Yamanaka KI, Saeki S, Sekizawa K, Suzuki TM, Morikawa T, Onda K. Study of Excited States and Electron Transfer of Semiconductor-Metal-Complex Hybrid Photocatalysts for CO 2 Reduction by Using Picosecond Time-Resolved Spectroscopies. Chemistry 2021; 27:1127-1137. [PMID: 33020962 DOI: 10.1002/chem.202004068] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Indexed: 11/07/2022]
Abstract
A semiconductor-metal-complex hybrid photocatalyst was previously reported for CO2 reduction; this photocatalyst is composed of nitrogen-doped Ta2 O5 as a semiconductor photosensitizer and a Ru complex as a CO2 reduction catalyst, operating under visible light (>400 nm), with high selectivity for HCOOH formation of more than 75 %. The electron transfer from a photoactive semiconductor to the metal-complex catalyst is a key process for photocatalytic CO2 reduction with hybrid photocatalysts. Herein, the excited-state dynamics of several hybrid photocatalysts are described by using time-resolved emission and infrared absorption spectroscopies to understand the mechanism of electron transfer from a semiconductor to the metal-complex catalyst. The results show that electron transfer from the semiconductor to the metal-complex catalyst does not occur directly upon photoexcitation, but that the photoexcited electron transfers to a new excited state. On the basis of the present results and previous reports, it is suggested that the excited state is a charge-transfer state located between shallow defects of the semiconductor and the metal-complex catalyst.
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Affiliation(s)
- Shunsuke Sato
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi, 480-1192, Japan
| | - Sei'ichi Tanaka
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Ken-Ichi Yamanaka
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi, 480-1192, Japan
| | - Shu Saeki
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi, 480-1192, Japan
| | - Keita Sekizawa
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi, 480-1192, Japan
| | - Tomiko M Suzuki
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi, 480-1192, Japan
| | - Takeshi Morikawa
- Toyota Central Research and Development Laboratories, Inc., Nagakute, Aichi, 480-1192, Japan
| | - Ken Onda
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.,Present address: Department of Chemistry, Kyushu University, Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
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Stability and activity maintenance of sol-gel Ni-MxOy (M=Ti, Zr, Ta) catalysts during continuous gasification of glycerol in supercritical water. J Supercrit Fluids 2019. [DOI: 10.1016/j.supflu.2019.02.028] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Liu J, Shi H, Huang X, Shen Q, Zhao G. Efficient Photoelectrochemical Reduction of CO 2 on Pyridyl Covalent Bonded Ruthenium(II) Based-Photosensitizer. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.08.135] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Akimov AV. Libra: An open-Source “methodology discovery” library for quantum and classical dynamics simulations. J Comput Chem 2016; 37:1626-49. [DOI: 10.1002/jcc.24367] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2015] [Revised: 02/03/2016] [Accepted: 03/02/2016] [Indexed: 01/10/2023]
Affiliation(s)
- Alexey V. Akimov
- Department of Chemistry; University at Buffalo, the State University of New York; Buffalo, New York 14260-3000
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Coe BJ, Sánchez S. Synthesis and properties of new mononuclear Ru(ii)-based photocatalysts containing 4,4′-diphenyl-2,2′-bipyridyl ligands. Dalton Trans 2016; 45:5210-22. [DOI: 10.1039/c6dt00039h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Almost colourless trans-RuIICl2(N^N)(CO)2 (N^N = a derivative of 4,4′-diphenyl-2,2′-bipyridyl) complexes are reasonably effective photocatalytic oxidants in combination with a photosensitizer and sacrificial oxidant.
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Affiliation(s)
- Benjamin J. Coe
- School of Chemistry
- The University of Manchester
- Manchester M13 9PL
- UK
| | - Sergio Sánchez
- School of Chemistry
- The University of Manchester
- Manchester M13 9PL
- UK
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White JL, Baruch MF, Pander JE, Hu Y, Fortmeyer IC, Park JE, Zhang T, Liao K, Gu J, Yan Y, Shaw TW, Abelev E, Bocarsly AB. Light-Driven Heterogeneous Reduction of Carbon Dioxide: Photocatalysts and Photoelectrodes. Chem Rev 2015; 115:12888-935. [DOI: 10.1021/acs.chemrev.5b00370] [Citation(s) in RCA: 1148] [Impact Index Per Article: 127.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- James L. White
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Maor F. Baruch
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - James E. Pander
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Yuan Hu
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Ivy C. Fortmeyer
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - James Eujin Park
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Tao Zhang
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Kuo Liao
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Jing Gu
- Chemical
and Materials Science Center, National Renewable Energy Laboratory
, Golden, Colorado
80401, United States
| | - Yong Yan
- Chemical
and Materials Science Center, National Renewable Energy Laboratory
, Golden, Colorado
80401, United States
| | - Travis W. Shaw
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Esta Abelev
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
| | - Andrew B. Bocarsly
- Department
of Chemistry, Princeton University
, Princeton, New Jersey
08544, United States
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Akimov AV, Asahi R, Jinnouchi R, Prezhdo OV. What Makes the Photocatalytic CO2 Reduction on N-Doped Ta2O5 Efficient: Insights from Nonadiabatic Molecular Dynamics. J Am Chem Soc 2015; 137:11517-25. [DOI: 10.1021/jacs.5b07454] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alexey V. Akimov
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
| | - Ryoji Asahi
- Toyota Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-shi, Aichi 480-1192, Japan
| | - Ryosuke Jinnouchi
- Toyota Central Research and Development Laboratories, Inc., 41-1 Yokomichi, Nagakute-shi, Aichi 480-1192, Japan
| | - Oleg V. Prezhdo
- Department
of Chemistry, University of Southern California, Los Angeles, California 90089, United States
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