1
|
Zhu Y, Li X, Wen Z, Zhao R, Chen Z, Zhang Z, Gao H, Wang S, Li F. Highly Efficient Photoelectrochemical Alkene Epoxidation on a Dye-Sensitized Photoanode. J Am Chem Soc 2024; 146:21903-21912. [PMID: 39046794 DOI: 10.1021/jacs.4c06461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2024]
Abstract
In photoelectrochemical (PEC) cells, selective oxidation of organic substrates coupled with hydrogen evolution represents a promising approach for value-added chemical production and solar energy conversion. In this study, we report on PEC epoxidation of alkenes at a ruthenium dye-sensitized photoanode in a CH3CN/H2O mixed solvent with LiBr as a mediator and water as the oxygen source. The dye-sensitized photoanode was found to exhibit significant advantages in the simultaneous improvement of charge separation and suppression of charge recombination. First, LiBr as a redox mediator plays a critical role in charge separation, leading to an excellent excited electron injection efficiency of 95% and a high dye regeneration efficiency of 87%. Second, the predominant charge recombination pathway on the dye-sensitized photoanode is efficiently blocked by the reaction between alkene and the in situ generated bromine oxidant. As a result, the current system achieved a remarkable photocurrent density of over 4 mA cm-2 with a record-high incident photo-to-current efficiency (IPCE) of 51% and extraordinary selectivity of up to 99% for the epoxidation of a wide range of alkenes. Meanwhile, nearly 100% Faradaic efficiency for hydrogen evolution was obtained. The performance shown here exceeds that obtained by metal oxide-based semiconductor photoanodes under comparable conditions, demonstrating the great potential of dye-sensitized photoelectrodes for organic synthesis owing to their diversity and tunability.
Collapse
Affiliation(s)
- Yong Zhu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Xiaona Li
- School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhibing Wen
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Ran Zhao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Zhi Chen
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Zihao Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Hua Gao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Siyao Wang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| | - Fei Li
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, Dalian University of Technology, Dalian 116024, China
| |
Collapse
|
2
|
Liang QM, Chen SK, Ding Z, Wang JC, Hu C, Shi J, Wang S, Han L, Yang Y. Continuous Strain Regulation of Palladium-Gold at the Atomic Level. NANO LETTERS 2024; 24:7637-7644. [PMID: 38874010 DOI: 10.1021/acs.nanolett.4c01395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2024]
Abstract
Revealing the effect of surface structure changes on the electrocatalytic performance is beneficial to the development of highly efficient catalysts. However, precise regulation of the catalyst surface at the atomic level remains challenging. Here, we present a continuous strain regulation of palladium (Pd) on gold (Au) via a mechanically controllable surface strain (MCSS) setup. It is found that the structural changes induced by the strain setup can accelerate electron transfer at the solid-liquid interface, thus achieving a significantly improved performance toward hydrogen evolution reaction (HER). In situ X-ray diffraction (XRD) experiments further confirm that the enhanced activity is attributed to the increased interplanar spacing resulting from the applied strain. Theoretical calculations reveal that the tensile strain modulates the electronic structure of the Pd active sites and facilitates the desorption of the hydrogen intermediates. This work provides an effective approach for revealing the relationships between the electrocatalyst surface structure and catalytic activity.
Collapse
Affiliation(s)
- Qing-Man Liang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Joint Surgery and Sports Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361005, China
| | - Su-Kang Chen
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Joint Surgery and Sports Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361005, China
| | - Zan Ding
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Joint Surgery and Sports Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361005, China
| | - Ji-Chun Wang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Joint Surgery and Sports Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361005, China
| | - Chun Hu
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Joint Surgery and Sports Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361005, China
| | - Jia Shi
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Joint Surgery and Sports Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361005, China
| | - Shaojie Wang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Joint Surgery and Sports Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361005, China
| | - Lu Han
- School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China
| | - Yang Yang
- Pen-Tung Sah Institute of Micro-Nano Science and Technology, State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Joint Surgery and Sports Medicine, Zhongshan Hospital, Xiamen University, Xiamen 361005, China
| |
Collapse
|
3
|
Tang K, Shao JY, Yan Y, Zhong YW. Photoelectrochemical Cells with a Pyridine-Anchored Bilayer Photoanode for Water Splitting. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:6244-6252. [PMID: 38482812 DOI: 10.1021/acs.langmuir.3c03722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/27/2024]
Abstract
A dye-sensitized photoanode is prepared by coassembling a Ru complex photosensitizer and a Ru water oxidation catalyst (WOC) on a TiO2 substrate, in which the WOC molecules are immobilized in a layer-by-layer fashion through metal-pyridine coordination with the aid of a bifunctional anchoring and bridging molecule containing multiple pyridine groups. Under visible-light irradiation, an anodic photocurrent of around 200 μA/cm2 has been achieved with O2 and H2 being generated at the photoanode and Pt counter electrode, respectively. The pyridine anchoring strategy provides a simple method to prepare photoelectrodes for applications in photoelectrochemical cells.
Collapse
Affiliation(s)
- Kun Tang
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jiang-Yang Shao
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190, China
| | - Yongli Yan
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190, China
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, Chinese Academy of Sciences; Beijing 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
4
|
Wang L, Wang L. Ligands modification strategies for mononuclear water splitting catalysts. Front Chem 2022; 10:996383. [PMID: 36238101 PMCID: PMC9551221 DOI: 10.3389/fchem.2022.996383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 08/03/2022] [Indexed: 11/13/2022] Open
Abstract
Artificial photosynthesis (AP) has been proved to be a promising way of alleviating global climate change and energy crisis. Among various materials for AP, molecular complexes play an important role due to their favorable efficiency, stability, and activity. As a result of its importance, the topic has been extensively reviewed, however, most of them paid attention to the designs and preparations of complexes and their water splitting mechanisms. In fact, ligands design and preparation also play an important role in metal complexes’ properties and catalysis performance. In this review, we focus on the ligands that are suitable for designing mononuclear catalysts for water splitting, providing a coherent discussion at the strategic level because of the availability of various activity studies for the selected complexes. Two main designing strategies for ligands in molecular catalysts, substituents modification and backbone construction, are discussed in detail in terms of their potentials for water splitting catalysts.
Collapse
|
5
|
Multiple carbon interface engineering to boost oxygen evolution of NiFe nanocomposite electrocatalyst. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63916-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
6
|
Zhu Y, Liu G, Zhao R, Gao H, Li X, Sun L, Li F. Photoelectrochemical water oxidation improved by pyridine N-oxide as a mimic of tyrosine-Z in photosystem II. Chem Sci 2022; 13:4955-4961. [PMID: 35655895 PMCID: PMC9067620 DOI: 10.1039/d2sc00443g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 03/31/2022] [Indexed: 11/21/2022] Open
Abstract
Artificial photosynthesis provides a way to store solar energy in chemical bonds with water oxidation as a major challenge for creating highly efficient and robust photoanodes that mimic photosystem II. We report here an easily available pyridine N-oxide (PNO) derivative as an efficient electron transfer relay between an organic light absorber and molecular water oxidation catalyst on a nanoparticle TiO2 photoanode. Spectroscopic and kinetic studies revealed that the PNO/PNO+˙ couple closely mimics the redox behavior of the tyrosine/tyrosyl radical pair in PSII in improving light-driven charge separation via multi-step electron transfer. The integrated photoanode exhibited a 1 sun current density of 3 mA cm-2 in the presence of Na2SO3 and a highly stable photocurrent density of >0.5 mA cm-2 at 0.4 V vs. NHE over a period of 1 h for water oxidation at pH 7. The performance shown here is superior to those of previously reported organic dye-based photoanodes in terms of photocurrent and stability.
Collapse
Affiliation(s)
- Yong Zhu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 China
| | - Guoquan Liu
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 China
| | - Ran Zhao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 China
| | - Hua Gao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 China
| | - Xiaona Li
- Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology Dalian 116024 China
| | - Licheng Sun
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 China
- Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology Stockholm 10044 Sweden
- Center of Artificial Photosynthesis for Solar Fuels, School of Science, Westlake University Hangzhou 310024 China
| | - Fei Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology Dalian 116024 China
| |
Collapse
|
7
|
Synthesis and photophysical properties of pyridyl- and quinolinyl-substituted bis(arylthienyl)pyridines. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.113805] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
8
|
Gu Y, Wang X, Humayun M, Li L, Sun H, Xu X, Xue X, Habibi-Yangjeh A, Temst K, Wang C. Spin regulation on (Co,Ni)Se2/C@FeOOH hollow nanocage accelerates water oxidation. CHINESE JOURNAL OF CATALYSIS 2022. [DOI: 10.1016/s1872-2067(21)63922-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
9
|
|
10
|
Sahoo MK, Samantara AK, Behera JN. Impact of Iron in Three-Dimensional Co-MOF for Electrocatalytic Water Oxidation. Inorg Chem 2021; 61:62-72. [PMID: 34515478 DOI: 10.1021/acs.inorgchem.1c01857] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The integration of iron (Fe) into a cobalt metal-organic framework (Co-MOF) tunes the electronic structure of the parent MOF as well as enhances their electrocatalytic characteristics. By using pyrazine and hydrofluoric acid, we have synthesized three-dimensional Co-MOF [CoFC4H4N2(SO4)0.5], (1), and Fe-MOF [FeFC4H4N2(SO4)0.5], (2), through a single-step solvothermal method. Further, a series of bimetallic (having both Co and Fe metal centers) MOFs [Co1-xFexFC4H4N2(SO4)0.5] were synthesized with variable concentrations of Fe, and their electrocatalytic performances were analyzed. The optimized amount of Fe significantly impacted the electrocatalytic behavior of the bimetallic MOF toward water oxidation. Particularly, the Co0.75Fe0.25-MOF needs only 239 and 257 mV of overpotential to deliver 10 and 50 mA/cm2 current density, respectively, in alkaline electrolytic conditions. The Co0.75Fe0.25-MOF shows a lower Tafel slope (42 mV/dec.) among other bimetallic MOFs and even the commercial RuO2, and it has excellent durability (with ∼8 mV increases in overpotential after 18 h of electrolysis) and 97.05% Faradaic efficiency, which further evident its catalytic excellency. These findings explore the intrinsic properties of MOF-based electrocatalysts and prospect the suitability for future water electrolysis.
Collapse
Affiliation(s)
- Malaya K Sahoo
- National Institute of Science Education and Research (NISER), Khordha 752050, Odisha, India.,Homi Bhabha National Institute, (HBNI), Mumbai 400094, India.,Centre for Interdisciplinary Sciences (CIS), NISER, Jatni 752050, Odisha, India
| | - Aneeya K Samantara
- National Institute of Science Education and Research (NISER), Khordha 752050, Odisha, India.,Homi Bhabha National Institute, (HBNI), Mumbai 400094, India.,Centre for Interdisciplinary Sciences (CIS), NISER, Jatni 752050, Odisha, India
| | - J N Behera
- National Institute of Science Education and Research (NISER), Khordha 752050, Odisha, India.,Homi Bhabha National Institute, (HBNI), Mumbai 400094, India.,Centre for Interdisciplinary Sciences (CIS), NISER, Jatni 752050, Odisha, India
| |
Collapse
|