1
|
Dynamics of Electron Transfers in Photosensitization Reactions of Zinc Porphyrin Derivatives. Molecules 2022; 28:molecules28010327. [PMID: 36615521 PMCID: PMC9822303 DOI: 10.3390/molecules28010327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 12/16/2022] [Accepted: 12/27/2022] [Indexed: 01/03/2023] Open
Abstract
Photocatalytic systems for CO2 reduction operate via complicated multi-electron transfer (ET) processes. A complete understanding of these ET dynamics can be challenging but is key to improving the efficiency of CO2 conversion. Here, we report the ET dynamics of a series of zinc porphyrin derivatives (ZnPs) in the photosensitization reactions where sequential ET reactions of ZnPs occur with a sacrificial electron donor (SED) and then with TiO2. We employed picosecond time-resolved fluorescence spectroscopy and femtosecond transient absorption (TA) measurement to investigate the fast ET dynamics concealed in the steady-state or slow time-resolved measurements. As a result, Stern-Volmer analysis of fluorescence lifetimes evidenced that the reaction of photoexcited ZnPs with SED involves static and dynamic quenching. The global fits to the TA spectra identified much faster ET dynamics on a few nanosecond-time scales in the reactions of one-electron reduced species (ZnPs•-) with TiO2 compared to previously measured minute-scale quenching dynamics and even diffusion rates. We propose that these dynamics report the ET dynamics of ZnPs•- formed at adjacent TiO2 without involving diffusion. This study highlights the importance of ultrafast time-resolved spectroscopy for elucidating the detailed ET dynamics in photosensitization reactions.
Collapse
|
2
|
Choe MS, Choi S, Lee HS, Chon B, Shin JY, Kim CH, Son HJ, Kang SO. Sustainable Carbon Dioxide Reduction of the P3HT Polymer-Sensitized TiO 2/Re(I) Photocatalyst. ACS APPLIED MATERIALS & INTERFACES 2022; 14:50718-50730. [PMID: 36331558 DOI: 10.1021/acsami.2c09924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
In this study, a p-type π-conjugated polymer chain, poly(3-hexylthiophene-2,5-diyl) (P3HT), was physically adsorbed onto n-type TiO2 nanoparticles functionalized with a molecular CO2 reduction catalyst, (4,4-Y2-bpy)ReI(CO)3Cl (ReP, Y = CH2PO(OH)2), to generate a new type of P3HT-heterogenized hybrid system (P3HT/TiO2/ReP), and its photosensitizing properties were assessed in a heteroternary system for photochemical CO2 reduction. We found that P3HT immobilization on TiO2 facilitated photoinduced electron transfer (PET) from photoactivated P3HT* to the n-type TiO2 semiconductor via rapid interfacial electron injection (∼65 ps) at the P3HT and TiO2 surface interface (P3HT* → TiO2). With such effective charge separation, the heterogenization of P3HT onto TiO2 resulted in a steady electron supply toward the co-adsorbed Re(I) catalyst, attaining durable catalytic activity with a turnover number (TON) of ∼5300 over an extended time period of 655 h over five consecutive photoreactions, without deformation of the adsorbed P3HT polymer. The long-period structural stability of TiO2-adsorbed P3HT was verified based on a comparative analysis of its photophysical properties before and after 655 h of photolysis. To our knowledge, this conversion activity is the highest reported so far for polymer-sensitized photochemical CO2 reduction systems. This investigation provides insights and design guidelines for photocatalytic systems that utilize organic photoactive polymers as photosensitizing units.
Collapse
Affiliation(s)
- Min Su Choe
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Sunghan Choi
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Hyun Seok Lee
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Bumsoo Chon
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Jae Yoon Shin
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Chul Hoon Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Ho-Jin Son
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Sang Ook Kang
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| |
Collapse
|
3
|
Abstract
ConspectusDuring the last few decades, the design of catalytic systems for CO2 reduction has been extensively researched and generally involves (1) traditional approaches using molecular organic/organometallic materials and heterogeneous inorganic semiconductors and (2) combinatory approaches wherein these materials are combined as needed. Recently, we have devised a number of new TiO2-mediated multicomponent hybrid systems that synergistically integrate the intrinsic merits of various materials, namely, molecular photosensitizers/catalysts and n-type TiO2 semiconductors, and lower the energetic and kinetic barriers between components. We have termed such multicomponent hybrid systems assembled from the hybridization of various organic/inorganic/organometallic units in a single platform inorganometallic photocatalysts. The multicomponent inorganometallic (MIOM) hybrid system onto which the photosensitizer and catalyst are coadsorbed efficiently eliminates the need for bulk-phase diffusion of the components and avoids the accumulation of radical intermediates that invokes a degradation pathway, in contrast to the homogeneous system, in which the free reactive species are concentrated in a confined reaction space. In particular, in energetic terms, we discovered that in nonaqueous media, the conduction band (CB) levels of reduced TiO2 (TiO2(e-)) are positioned at a higher level (in the range -1.5 to -1.9 V vs SCE). This energetic benefit of reduced TiO2 allows smooth electron transfer (ET) from injected electrons (TiO2(e-)) to the coadsorbed CO2 reduction catalyst, which requires relatively high reducing power (at least more than -1.1 V vs SCE). On the other hand, the existence of various shallow surface trapping sites and surface bands, which are 0.3-1.0 eV below the CB of TiO2, efficiently facilitates electron injection from any photosensitizer (including dyes having low excited energy levels) to TiO2 without energetic limitation. This is contrasted with most photocatalytic systems, wherein successive absorption of single high-energy photons is required to produce excited states with enough energy to fulfill photocatalytic reaction, which may allow unwanted side reactions during photocatalysis. In this Account, we present our recent research efforts toward advancing these MIOM hybrid systems for photochemical CO2 reduction and discuss their working mechanisms in detail. Basic ET processes within the MIOM system, including intervalence ET in organic/organometallic redox systems, metal-to-ligand charge transfer of organometallic complexes, and interfacial/outer-sphere charge transfer between components, were investigated by conducting serial photophysical and electrochemical analyses. Because such ET events occur primarily at the interface between the components, the efficiency of interfacial ET between the molecular components (organic/organometallic photosensitizers and molecular reduction catalysts) and the bulk inorganic solid (mainly n-type TiO2 semiconductors) has a significant influence on the overall photochemical reaction kinetics and mechanism. In some TiO2-mediated MIOM hybrids, the chemical attachment of organic or organometallic photosensitizing units onto TiO2 semiconductors efficiently eliminates the step of diffusion/collision-controlled ET between components and prevents the accumulation of reactive species (oxidatively quenched cations or reductively quenched anions) in the reaction solution, ensuring steady photosensitization over an extended reaction period. The site isolation of a single-site organometallic catalyst employing TiO2 immobilization promotes the monomeric catalytic pathway during the CO2 reduction process, resulting in enhanced product selectivity and catalytic performance, including lifetime extension. In addition, as an alternative inorganic solid scaffold, the introduction of a host porphyrin matrix (interlinked in a metal-organic framework (MOF) material) led to efficient and durable photocatalytic CO2 conversion by the new MOF-Re(I) hybrid as a result of efficient light harvesting/exciton migration in the porphyrinic MOF and rapid quenching of the photogenerated electrons by the doped Re(I) catalytic sites. Overall, the case studies presented herein provide valuable insights for the rational design of advanced multicomponent hybrid systems for artificial photosynthesis involving CO2 reduction.
Collapse
Affiliation(s)
- Ho-Jin Son
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Chyongjin Pac
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| | - Sang Ook Kang
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Republic of Korea
| |
Collapse
|
4
|
Choe MS, Choi S, Kim SY, Back C, Lee D, Lee HS, Kim CH, Son HJ, Kang SO. A Hybrid Ru(II)/TiO 2 Catalyst for Steadfast Photocatalytic CO 2 to CO/Formate Conversion Following a Molecular Catalytic Route. Inorg Chem 2021; 60:10235-10248. [PMID: 34196536 DOI: 10.1021/acs.inorgchem.1c00615] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Herein, we employed a molecular Ru(II) catalyst immobilized onto TiO2 particulates of (4,4'-Y2-bpy)RuII(CO)2Cl2 (RuP; Y = CH2PO(OH)2), as a hybrid catalyst system to secure the efficient and steady catalytic activity of a molecular bipyridyl Ru(II)-complex-based photocatalytic system for CO2 reduction. From a series of operando FTIR spectrochemical analyses, it was found that the TiO2-fixed molecular Ru(II) complex leads to efficient stabilization of the key monomeric intermediate, RuII-hydride (LRuII(H)(CO)2Cl), and suppresses the formation of polymeric Ru(II) complex (-(L(CO)2Ru-Ru(CO)2L)n-), which is a major deactivation product produced during photoreaction via the Ru-Ru dimeric route. Active promotion of the monomeric catalytic route in a hetero-binary system (IrPS + TiO2/RuP) that uses TiO2-bound Ru(II) complex as reduction catalyst led to highly increased activity as well as durability of photocatalytic behavior with respect to the homogeneous catalysis of free Ru(II) catalyst (IrPS + Ru(II) catalyst). This catalytic strategy produced maximal turnover numbers (TONs) of >4816 and >2228, respectively, for CO and HCOO- production in CO2-saturated N,N-dimethylformamide (DMF)/TEOA (16.7 vol % TEOA) solution containing a 0.1 M sacrificial electron donor.
Collapse
Affiliation(s)
- Min Su Choe
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Sunghan Choi
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - So-Yoen Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Changhyun Back
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Daehan Lee
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Hyun Seok Lee
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Chul Hoon Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Ho-Jin Son
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Sang Ook Kang
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| |
Collapse
|
5
|
Yuan G, Liang T, Liang Y, Pang X, Jia Z. The controlled growth of conjugated polymer-quantum dot nanocomposites via a unimolecular templating strategy. Chem Commun (Camb) 2021; 57:1250-1253. [PMID: 33427260 DOI: 10.1039/d0cc06498j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Size and surface functionality are critically important for organic-inorganic hybrid semiconductive nanocomposites in terms of stable photoelectrochemical properties and superior device performance. The ability of reversible deactivation radical polymerization to control the chain length and dispersity of polymers is herein extended to the tailor-made synthesis of nanocomposites with tunable size, distribution, and surface coating. This is exemplified by the fabrication of cadmium selenide (CdSe) quantum dots (QDs) with uniform sizes from 2 to 10 nm that are intimately coated with poly(3-hexylthiophene) (i.e., CdSe@P3HT).
Collapse
Affiliation(s)
- Guoxiao Yuan
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Tianci Liang
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Yachao Liang
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Xinchang Pang
- Henan Joint International Research Laboratory of Living Polymerizations and Functional Nanomaterials, Henan Key Laboratory of Advanced Nylon Materials and Application, School of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, China.
| | - Zhongfan Jia
- Institute for Nanoscale Science and Technology, College of Science and Engineering, Flinders University, Bedford Park, South Australia 5042, Australia.
| |
Collapse
|
6
|
An Aqueous Exfoliation of WO 3 as a Route for Counterions Fabrication-Improved Photocatalyticand Capacitive Properties of Polyaniline/WO 3Composite. MATERIALS 2020; 13:ma13245781. [PMID: 33348911 PMCID: PMC7766862 DOI: 10.3390/ma13245781] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2020] [Revised: 12/10/2020] [Accepted: 12/15/2020] [Indexed: 12/18/2022]
Abstract
In this paper, we demonstrate a novel, electrochemical route of polyaniline/tungsten oxide (PANI)/WO3) film preparation. Polyaniline composite film was electrodeposited on the FTO (fluorine-doped tin oxide) substrate from the aqueous electrolyte that contained aniline (monomer) and exfoliated WO3 as a source of counter ions. The chemical nature of WO3 incorporated in the polyaniline matrix was investigated using X-ray photoelectron spectroscopy. SEM (scanning electron microscopy) showed the impact of WO3 presence on the morphology of polyaniline film. PANI/WO3 film was tested as an electrode material in an acidic electrolyte. Performed measurements showed the electroactivity of both components and enhanced electrochemical stability of PANI/WO3 in comparison with PANI/Cl. Thus, PANI/WO3 electrodes were utilized to construct the symmetric supercapacitors. The impact of capacitive and diffusion-controlled processes on the mechanism of electrical energy storage was quantitatively determined. Devices exhibited high electrochemical capacity of 135 mF cm−2 (180 F g−1) and satisfactory retention rate of 70% after 10,000 cycles. The electrochemical energy storage device exhibited 1075.6 W kg−1 of power density and 12.25 Wh kg−1 of energy density. We also investigated the photocatalytic performance of the deposited film. Photodegradation efficiencies of methylene blue and methyl orange using PANI/WO3 and PANI/Cl were compared. The mechanism of dye degradation using WO3-containing films was investigated in the presence of scavengers. Significantly higher efficiency of photodecomposition of dyes was achieved for composite films (84% and 86%) in comparison with PANI/Cl (32% and 39%) for methylene blue and methyl orange, respectively.
Collapse
|
7
|
Jo JH, Choi S, Cheong H, Shin JY, Kim CH, Cho DW, Son H, Pac C, Kang SO. Ancillary Ligand Effects on Heteroleptic Ir
III
Dye in Dye‐Sensitized Photocatalytic CO
2
Reduction: Photoaccumulation of Charges on Arylated Bipyridine Ligand and Its Control on Catalytic Performance. Chemistry 2020; 26:16733-16754. [DOI: 10.1002/chem.202002575] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Ju Hyoung Jo
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| | - Sunghan Choi
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| | - Ha‐Yeon Cheong
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| | - Jae Yoon Shin
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| | - Chul Hoon Kim
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| | - Dae Won Cho
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| | - Ho‐Jin Son
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| | - Chyongjin Pac
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| | - Sang Ook Kang
- Department of Advanced Materials Chemistry Korea University Sejong 30019 South Korea
| |
Collapse
|
8
|
Tian CX, Cui SC, Liu XY, Liu JG. A hybrid composite of rhenium complexes covalently grafted on reduced graphene oxide/hydrogenated TiO2 as an efficient catalyst for CO2 reduction under visible light. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-04028-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
|
9
|
Design of inorganic–organic hybrid photocatalytic systems for enhanced CO2 reduction under visible light. Chem Eng Sci 2019. [DOI: 10.1016/j.ces.2019.07.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
|
10
|
Kim PS, Choi S, Kim S, Jo JH, Lee YS, Kim B, Kim W, Choi W, Kim CH, Son H, Pac C, Kang SO. Organometallic Iridium(III) Complex Sensitized Ternary Hybrid Photocatalyst for CO
2
to CO Conversion. Chemistry 2019; 25:13609-13623. [DOI: 10.1002/chem.201903136] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/09/2019] [Indexed: 01/27/2023]
Affiliation(s)
- Pil Soo Kim
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Sunghan Choi
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - So‐Yoen Kim
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Ju Hyoung Jo
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Yoon Seo Lee
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Bupmo Kim
- Department of Chemical and Biological EngineeringSookmyung Women's University Seoul 04310 South Korea
- Division of Environmental Science and Engineering & Department of, Chemical EngineeringPohang University of, Science Technology (POSTECH) Pohang 37673 South Korea
| | - Wooyul Kim
- Department of Chemical and Biological EngineeringSookmyung Women's University Seoul 04310 South Korea
| | - Wonyong Choi
- Division of Environmental Science and Engineering & Department of, Chemical EngineeringPohang University of, Science Technology (POSTECH) Pohang 37673 South Korea
| | - Chul Hoon Kim
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Ho‐Jin Son
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Chyongjin Pac
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| | - Sang Ook Kang
- Department of Advanced Materials ChemistryKorea University Sejong 30019 South Korea
| |
Collapse
|
11
|
Jo M, Choi S, Jo JH, Kim SY, Kim PS, Kim CH, Son HJ, Pac C, Kang SO. Utility of Squaraine Dyes for Dye-Sensitized Photocatalysis on Water or Carbon Dioxide Reduction. ACS OMEGA 2019; 4:14272-14283. [PMID: 31508551 PMCID: PMC6733223 DOI: 10.1021/acsomega.9b01914] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Accepted: 08/05/2019] [Indexed: 06/01/2023]
Abstract
Red light-sensitized squaraine (SQ) dyes were developed and incorporated into dye-sensitized catalysts (DSCs) with the formula of SQ/TiO2/Cat, and their efficacies were evaluated in terms of performance on either water or carbon dioxide reduction. Pt nanoparticles or fac-[Re(4,4'-bis-(diethoxyphosphorylmethyl)-2,2'-bipyridine)(CO)3Cl] were used as each catalytic center within the DSC frame of SQ/TiO2/Pt (Type I) or SQ/TiO2/Re(I) (Type II). In order to convey the potential utility of SQ in low energy sensitization, the following catalytic reductions were carried out under selective lower energy irradiation (>500 nm). Type I and II showed different catalytic performances, primarily due to the choice of solvent for each catalytic condition: hydrogenation was carried out in H2O, but CO2 reduction in dimethylformamide (DMF), and SQ was more stable in aqueous acid conditions for hydrogen generation than CO2 reduction in DMF. A suspension of Type I in 3 mL water containing 0.1 M ascorbic acid (pH = 2.66) resulted in efficient photocatalytic hydrogen evolution, producing 37 μmol of H2 for 4 h. However, in photocatalysis of Type II (SQ/TiO2/Re(I)) in 3 mL DMF containing 0.1 M 1,3-dimethyl-2-phenyl-1,3-dihydrobenzimidazole, the TiO2-bound SQ dyes were not capable of working as a low energy sensitizer because SQ was susceptible to dye decomposition in nucleophilic DMF conditions, resulting in DSC deactivation for the CO2 reduction. Even with the limitation of solvent, the DSC conditions for the utility of SQ have been established: the anchoring group effect of SQ with either phosphonic acid or carboxylic acid onto the TiO2 surface; energy alignment of SQ with the flat band potentials (E fb) of TiO2 semiconductors and the reduction power of electron donors; and the wavelength range of the light source used, particularly when >500 nm.
Collapse
|
12
|
Woo SJ, Choi S, Kim SY, Kim PS, Jo JH, Kim CH, Son HJ, Pac C, Kang SO. Highly Selective and Durable Photochemical CO2 Reduction by Molecular Mn(I) Catalyst Fixed on a Particular Dye-Sensitized TiO2 Platform. ACS Catal 2019. [DOI: 10.1021/acscatal.8b03816] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Sung-Jun Woo
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Sunghan Choi
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - So-Yoen Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Pil Soo Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Ju Hyoung Jo
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Chul Hoon Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Ho-Jin Son
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Chyongjin Pac
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Sang Ook Kang
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| |
Collapse
|
13
|
|
14
|
Sano K, Sonotani A, Tatsumi D, Ohtani Y, Shimada T, Takagi S. Characterization of dispersed titania nanosheet under aqueous conditions and its complex formation behavior with cationic porphyrin. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2017.08.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
15
|
Sekizawa K, Sato S, Arai T, Morikawa T. Solar-Driven Photocatalytic CO2 Reduction in Water Utilizing a Ruthenium Complex Catalyst on p-Type Fe2O3 with a Multiheterojunction. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03244] [Citation(s) in RCA: 95] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Keita Sekizawa
- Toyota Central R&D Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
| | - Shunsuke Sato
- Toyota Central R&D Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
| | - Takeo Arai
- Toyota Central R&D Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
| | - Takeshi Morikawa
- Toyota Central R&D Laboratories, Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
| |
Collapse
|
16
|
Won DI, Lee JS, Ba Q, Cho YJ, Cheong HY, Choi S, Kim CH, Son HJ, Pac C, Kang SO. Development of a Lower Energy Photosensitizer for Photocatalytic CO2 Reduction: Modification of Porphyrin Dye in Hybrid Catalyst System. ACS Catal 2018. [DOI: 10.1021/acscatal.7b02961] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dong-Il Won
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Jong-Su Lee
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Qiankai Ba
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Yang-Jin Cho
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Ha-Yeon Cheong
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Sunghan Choi
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Chul Hoon Kim
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Ho-Jin Son
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Chyongjin Pac
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| | - Sang Ook Kang
- Department of Advanced Materials Chemistry, Korea University, Sejong 30019, Korea
| |
Collapse
|
17
|
Cheong HY, Kim SY, Cho YJ, Cho DW, Kim CH, Son HJ, Pac C, Kang SO. Photosensitization Behavior of Ir(III) Complexes in Selective Reduction of CO2 by Re(I)-Complex-Anchored TiO2 Hybrid Catalyst. Inorg Chem 2017; 56:12042-12053. [DOI: 10.1021/acs.inorgchem.7b01963] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Ha-Yeon Cheong
- Department of Advanced Materials
Chemistry, Korea University, Sejong 30019, Korea
| | - So-Yoen Kim
- Department of Advanced Materials
Chemistry, Korea University, Sejong 30019, Korea
| | - Yang-Jin Cho
- Department of Advanced Materials
Chemistry, Korea University, Sejong 30019, Korea
| | - Dae Won Cho
- Department of Advanced Materials
Chemistry, Korea University, Sejong 30019, Korea
| | - Chul Hoon Kim
- Department of Advanced Materials
Chemistry, Korea University, Sejong 30019, Korea
| | - Ho-Jin Son
- Department of Advanced Materials
Chemistry, Korea University, Sejong 30019, Korea
| | - Chyongjin Pac
- Department of Advanced Materials
Chemistry, Korea University, Sejong 30019, Korea
| | - Sang Ook Kang
- Department of Advanced Materials
Chemistry, Korea University, Sejong 30019, Korea
| |
Collapse
|