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Yuan K, Liu Z, Yan Z, Yun Q, Song T, Guo J, Zhang X, Zhong D, Tang Z, Lu T, Hu W. Metal-Organic Framework-Based Hetero-Phase Nanostructure Photocatalysts with Molecular-Scale Tunable Energy Levels. Angew Chem Int Ed Engl 2024; 63:e202402693. [PMID: 38586976 DOI: 10.1002/anie.202402693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 04/06/2024] [Accepted: 04/06/2024] [Indexed: 04/09/2024]
Abstract
As an effective method to modulate the physicochemical properties of materials, crystal phase engineering, especially hetero-phase, plays an important role in developing high-performance photocatalysts. However, it is still a huge challenge but significant to construct porous hetero-phase nanostructures with adjustable band structures. As a kind of unique porous crystalline materials, metal-organic frameworks (MOFs) might be the appropriate candidate, but the MOF-based hetero-phase is rarely reported. Herein, we developed a secondary building unit (SBU) regulating strategy to prepare two crystal phases of Ti-MOFs constructed by titanium and 1,4-dicarboxybenzene, i.e., COK and MIL-125. Besides, COK/MIL-125 hetero-phase was further constructed. In the photocatalytic hydrogen evolution reaction, COK/MIL-125 possessed the highest H2 yield compared to COK and MIL-125, ascribing to the Z-Scheme homojunction at hetero-phase interface. Furthermore, by decorating with amino groups (i.e., NH2-COK/NH2-MIL-125), the light absorbing capacity was broadened to visible-light region, and the visible-light-driven H2 yield was greatly improved. Briefly, the MOF-based hetero-phase possesses periodic channel structures and molecularly adjustable band structures, which is scarce in traditional organic or inorganic materials. As a proof of concept, our work not only highlights the development of MOF-based hetero-phase nanostructures, but also paves a novel avenue for designing high-performance photocatalysts.
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Affiliation(s)
- Kuo Yuan
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
- Department of Chemistry, School of Science & Key Laboratory of Organic Integrated Circuits, Ministry of Education, Tianjin University, 300072, Tianjin, China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, 300071, Tianjin, China
| | - Zongyang Liu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Zhuang Yan
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, 100190, Beijing, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Qinbai Yun
- Department of Chemical and Biological Engineering & Energy Institute, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China This address is complete. There is no official postal code for Hong Kong
| | - Tianqun Song
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
- Department of Chemistry, School of Science & Key Laboratory of Organic Integrated Circuits, Ministry of Education, Tianjin University, 300072, Tianjin, China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, 300071, Tianjin, China
| | - Jun Guo
- State Key Laboratory of Separation Membranes and Membrane Processes, School of Chemistry, Tiangong University, 300387, Tianjin, China
| | - Xiaotao Zhang
- Department of Chemistry, School of Science & Key Laboratory of Organic Integrated Circuits, Ministry of Education, Tianjin University, 300072, Tianjin, China
| | - Dichang Zhong
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Zhiyong Tang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, 100190, Beijing, China
- University of Chinese Academy of Sciences, 100049, Beijing, China
| | - Tongbu Lu
- Institute for New Energy Materials and Low Carbon Technologies, School of Materials Science & Engineering, Tianjin University of Technology, 300384, Tianjin, China
| | - Wenping Hu
- Department of Chemistry, School of Science & Key Laboratory of Organic Integrated Circuits, Ministry of Education, Tianjin University, 300072, Tianjin, China
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Bi Y, Xu K, Wang Y, Li X, Zhang X, Wang J, Zhang Y, Liu Q, Fang Q. Efficient metal-organic framework-based dual co-catalysts system assist CdS for hydrogen production from photolysis of water. J Colloid Interface Sci 2024; 661:501-511. [PMID: 38308890 DOI: 10.1016/j.jcis.2024.01.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/05/2024]
Abstract
Metal-organic framework materials (MOFs) and their derivatives have been widely used in the field of photocatalytic water decomposition for hydrogen production. In this study, NiS/CdS was initially acquired and subsequently combined with DUT-67 via ultrasound to create a unique ternary photocatalyst NiS/CdS@DUT-67. The rate of hydrogen production for NiS/CdS@DUT-67 is 9618 μmol·g NiS/CdS-1·h-1 for NiS/CdS@DUT-67, which is 32 times and 2.5 times higher than that for CdS and NiS/CdS, respectively. Of particular interest is the fact that even after 50 h of photocatalysis, the hydrogen production rate did not show a significant decrease, demonstrating its excellent stability compared to CdS and NiS/CdS. In this ternary system, NiS and DUT-67 function as dual co-catalysts for CdS, collaborating to enhance charge separation during the photocatalysis. This study presents a clear demonstration of the advantages of utilizing metal-organic framework derivatives (MOF-derivatives) cophotocatalysts and their synergistic effect, resulting in improved photocatalytic activity and stability of semiconductors. This innovative approach provides a new perspective on constructing photocatalytic materials with exceptional performance.
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Affiliation(s)
- Yiyang Bi
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Kun Xu
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Ying Wang
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Xin Li
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Xupeng Zhang
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Jiabo Wang
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, China
| | - Yu Zhang
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, China.
| | - Qun Liu
- School of Petrochemical Technology, Jilin Institute of Chemical Technology, Jilin 132022, China.
| | - Qianrong Fang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China.
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Rom T, Agrawal A, Biswas R, Haldar KK, Paul AK. Superior Electrochemical Water Splitting and Energy-Storage Performances of In Situ Fabricated Charge-Separated Metal Organophosphonate Single Crystals. ACS APPLIED MATERIALS & INTERFACES 2024; 16:17797-17811. [PMID: 38552198 DOI: 10.1021/acsami.3c19079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
The design and exploration of advanced materials as a durable multifunctional electrocatalyst toward sustainable energy generation and storage development is the most perdurable challenge in the domain of renewable energy research. Herein, a facile in situ solvothermal approach has been adopted to prepare a methylviologen-regulated crystalline metal phosphonate compound, [C12H14N2][Ni(C11H11N2)(H2hedp)2]2•6H2O (NIT1), (H4hedp = 1-hydroxyethane 1,1-diphosphonic acid) and well characterized by several techniques. The as-prepared NIT1 displays excellent bifunctional electrocatalytic activity with dynamic stability toward oxygen evolution reaction (η10 = 288 mV) and hydrogen evolution reaction (η10 = 228 mV) in alkaline (1.0 M KOH) and acidic mediums (0.5 M H2SO4), respectively. Such a low overpotential and Tafel slope (68 mV/dec for OER; 56 mV/dec for HER) along with long-term durability up to 20 h of NIT1 make it superior to benchmark the electrocatalyst and various nonprecious metal-based catalysts under similar experimental condition. Further, the electrochemical supercapacitor measurements (in three-electrode system) reveal that the NIT1 electrode possesses much higher specific capacity of 187.6 C g-1 at a current density of 2 A g-1 (272 C g-1 at 5 mV s-1) with capacitance retention of 75.2% over 10,000 cycles at 14 A g-1 (Coulombic efficiency > 99%) in 6 M KOH electrolyte medium. Finally for a practical application, an asymmetric supercapacitor device (coin cell) is assembled by NIT1 material. The as-fabricated device delivers the maximum energy density of 39.4 Wh kg-1 at a power density of 450 W kg-1 and achieves a wide voltage window of 1.80 V. Notably, the device endures a remarkable cycle performance with cyclic retention of 92% (Coulombic efficiency > 99%) even after 14,000 charge/discharge cycles at 10 A g-1. Nevertheless, the extraordinary electrochemical activities toward OER and HER as well as the high-performance device fabrication for LED illumination of such a noble metal-free lower-dimensional charge-transfer compound are truly path breaking and would be promising for the development of advanced multifunctional materials.
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Affiliation(s)
- Tanmay Rom
- Department of Chemistry, National Institute of Technology, Kurukshetra136119, India
- Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR), Jakkur, Bengaluru 560064, Karnataka, India
| | - Anant Agrawal
- Department of Physics, National Institute of Technology, Kurukshetra 136119, India
| | - Rathindranath Biswas
- Department of Chemistry, School of Basic Science, Central University of Punjab, Bathinda 151401, India
| | - Krishna Kanta Haldar
- Department of Chemistry, School of Basic Science, Central University of Punjab, Bathinda 151401, India
| | - Avijit Kumar Paul
- Department of Chemistry, National Institute of Technology, Kurukshetra136119, India
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Patra R, Sarma D. Silver Nanoparticle-Functionalized Postsynthetically Modified Thiol MOF UiO-66-NH-SH for Efficient CO 2 Fixation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:10196-10210. [PMID: 38359330 DOI: 10.1021/acsami.3c18549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
Thiols are essential functional groups imparting unique properties, such as reactivity and selectivity, to many vital enzymes and biomolecules. The integration of electronically soft thiol groups within metal-organic frameworks (MOFs) yields elevated reactivity and a pronounced affinity for soft metal ions. However, the scarcity of thiol-based ligands and synthetic challenges hinder the advancement of thiol-based MOFs. To bypass the difficulties of synthesizing thiol MOFs by a direct reaction between thiol-based ligands and corresponding metal salts, postsynthetic modification (PSM) of MOFs is an efficient strategy to introduce thiol functionality. Herein, we have introduced Ag nanoparticles in postsynthetically modified thiol MOFs UiO-66-NH-SH (1) (synthesized by reaction between UiO-66-NH2 and thioglycolic acid) and UiO-66-NH-SH (2) (synthesized by reaction between UiO-66-NH2 and 3-mercaptopropionic acid) to synthesize a series of heterogeneous catalysts for CO2 fixation. Catalysts Cat 1-2 and Cat 3 - 4 were synthesized from UiO-66-NH-SH (1) and UiO-66-NH-SH (2), respectively, by using varying concentrations of silver (AgNO3). Catalyst Ag@UiO-66-NH-SH (1) (Ag = 3.45%; namely Cat 2) shows the highest efficiency for the catalytic conversion of propargylic alcohol and terminal epoxide to the corresponding cyclic carbonates. Finally, a rationalized reaction mechanism is proposed by correlating our results with the current literature. This work presents a viable strategy to utilize the thiol functionality of MOFs (avoiding the complexities associated with synthesizing thiol MOFs directly from thiol ligands) as a platform for introducing catalytically active metal centers and applying them as a heterogeneous catalyst for CO2 fixation reactions.
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Affiliation(s)
- Rajesh Patra
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801106, Bihar, India
| | - Debajit Sarma
- Department of Chemistry, Indian Institute of Technology Patna, Patna 801106, Bihar, India
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Wang CY, Chang HE, Wang CY, Kurioka T, Chen CY, Mark Chang TF, Sone M, Hsu YJ. Manipulation of interfacial charge dynamics for metal-organic frameworks toward advanced photocatalytic applications. NANOSCALE ADVANCES 2024; 6:1039-1058. [PMID: 38356624 PMCID: PMC10866133 DOI: 10.1039/d3na00837a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/15/2023] [Indexed: 02/16/2024]
Abstract
Compared to other known materials, metal-organic frameworks (MOFs) have the highest surface area and the lowest densities; as a result, MOFs are advantageous in numerous technological applications, especially in the area of photocatalysis. Photocatalysis shows tantalizing potential to fulfill global energy demands, reduce greenhouse effects, and resolve environmental contamination problems. To exploit highly active photocatalysts, it is important to determine the fate of photoexcited charge carriers and identify the most decisive charge transfer pathway. Methods to modulate charge dynamics and manipulate carrier behaviors may pave a new avenue for the intelligent design of MOF-based photocatalysts for widespread applications. By summarizing the recent developments in the modulation of interfacial charge dynamics for MOF-based photocatalysts, this minireview can deliver inspiring insights to help researchers harness the merits of MOFs and create versatile photocatalytic systems.
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Affiliation(s)
- Chien-Yi Wang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
| | - Huai-En Chang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
| | - Cheng-Yu Wang
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
| | - Tomoyuki Kurioka
- Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| | - Chun-Yi Chen
- Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| | - Tso-Fu Mark Chang
- Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| | - Masato Sone
- Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
| | - Yung-Jung Hsu
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University Hsinchu 300093 Taiwan
- International Research Frontiers Initiative, Institute of Innovative Research, Tokyo Institute of Technology Kanagawa 226-8503 Japan
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Cheng WW, Zhang SN, Wang J, Yang J, Yang Z, Chen XF, Xiao JD, Wang J. Boosting hydrogen production of a MOF-based multicomponent photocatalyst with clean interface via facile one-pot electrosynthesis. Chemistry 2024:e202303886. [PMID: 38212975 DOI: 10.1002/chem.202303886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 12/31/2023] [Accepted: 01/11/2024] [Indexed: 01/13/2024]
Abstract
Hydrogen production from photocatalysis via the usage of multicomponent photocatalysts represents a promising pathway for carbon peaking and carbon neutrality, owing to their structural advantages in dealing with the three crucial processes in photocatalysis, namely, light harvesting, charge transfer, and surface redox reactions. We demonstrate the fabrication of a MOF-based multicomponent photocatalyst, denoted as semiconductor/MOF/cocatalyst, by a one-pot electrochemical synthetic route. The as-fabricated multicomponent photocatalyst has a clean interface among the components, leading to close connections that contribute to high-quality heterojunction and facilitate photogenerated charge transfer and separation, thereby the efficient hydrogen evolution. The hydrogen production rate of the resultant ZrO2 /Zr-MOF/Pt is 1327 μmol ⋅ g-1 ⋅ h-1 , which is much higher than that of ZrO2 /Zr-MOF (15 μmol ⋅ g-1 ⋅ h-1 ) and pure Zr-MOF (10.1 μmol ⋅ g-1 ⋅ h-1 ), as well as the photodeposited-Pt products ZrO2 /Zr-MOF/PtPD (287 μmol ⋅ g-1 ⋅ h-1 ) and Zr-MOF/PtPD (192 μmol ⋅ g-1 ⋅ h-1 ) obtained by the step-wise synthetic approach. The work gives a good inspiration for the rational design and construction of MOF-based multicomponent photocatalysts through the one-pot electrosynthesis.
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Affiliation(s)
- Wen-Wen Cheng
- Institutes of Physical Science and Information Technology, Anhui Graphene Materials Research Center, Anhui University, 230601, Hefei, Anhui, P. R. China
| | - Sheng-Nan Zhang
- Institutes of Physical Science and Information Technology, Anhui Graphene Materials Research Center, Anhui University, 230601, Hefei, Anhui, P. R. China
| | - Jun Wang
- Institutes of Physical Science and Information Technology, Anhui Graphene Materials Research Center, Anhui University, 230601, Hefei, Anhui, P. R. China
| | - Jia Yang
- Institutes of Physical Science and Information Technology, Anhui Graphene Materials Research Center, Anhui University, 230601, Hefei, Anhui, P. R. China
| | - Zhengkun Yang
- Institutes of Physical Science and Information Technology, Anhui Graphene Materials Research Center, Anhui University, 230601, Hefei, Anhui, P. R. China
| | - Xi-Fan Chen
- Institutes of Physical Science and Information Technology, Anhui Graphene Materials Research Center, Anhui University, 230601, Hefei, Anhui, P. R. China
| | - Juan-Ding Xiao
- Institutes of Physical Science and Information Technology, Anhui Graphene Materials Research Center, Anhui University, 230601, Hefei, Anhui, P. R. China
| | - Junzhong Wang
- Institutes of Physical Science and Information Technology, Anhui Graphene Materials Research Center, Anhui University, 230601, Hefei, Anhui, P. R. China
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Botella R, Cao W, Celis J, Fernández-Catalá J, Greco R, Lu L, Pankratova V, Temerov F. Activating two-dimensional semiconductors for photocatalysis: a cross-dimensional strategy. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2024; 36:141501. [PMID: 38086082 DOI: 10.1088/1361-648x/ad14c8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Accepted: 12/12/2023] [Indexed: 01/05/2024]
Abstract
The emerging two-dimensional (2D) semiconductors substantially extend materials bases for versatile applications such as semiconductor photocatalysis demanding semiconductive matrices and large surface areas. The dimensionality, while endowing 2D semiconductors the unique properties to host photocatalytic functionality of pollutant removal and hydrogen evolution, hurdles the activation paths to form heterogenous photocatalysts where the photochemical processes are normally superior over these on the mono-compositional counterparts. In this perspective, we present a cross-dimensional strategy to employ thenD (n= 0-2) clusters or nanomaterials as activation partners to boost the photocatalytic activities of the 2D semiconductors. The formation principles of heterogenous photocatalysts are illustrated specifically for the 2D matrices, followed by selection criteria of them among the vast 2D database. The computer investigations are illustrated in the density functional theory route and machine learning benefitted from the vast samples in the 2D library. Synthetic realizations and characterizations of the 2D heterogenous systems are introduced with an emphasis on chemical methods and advanced techniques to understand materials and mechanistic studies. The perspective outlooks cross-dimensional activation strategies of the 2D materials for other applications such as CO2removal, and materials matrices in other dimensions which may inspire incoming research within these fields.
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Affiliation(s)
- R Botella
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Oulu, FIN-90014, Finland
| | - W Cao
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Oulu, FIN-90014, Finland
| | - J Celis
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Oulu, FIN-90014, Finland
| | - J Fernández-Catalá
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Oulu, FIN-90014, Finland
| | - R Greco
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Oulu, FIN-90014, Finland
| | - L Lu
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Oulu, FIN-90014, Finland
| | - V Pankratova
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Oulu, FIN-90014, Finland
| | - F Temerov
- Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, Oulu, FIN-90014, Finland
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Wu Y, Qu Y, Su C, Yang X, Yang Y, Zhang Y, Huang W. Enhanced Photoinduced Carrier Separation in Fe-MOF-525/CdS for Photocatalytic Hydrogen Evolution: Improved Catalytic Dynamics with Specific Active Sites. Inorg Chem 2023; 62:21290-21298. [PMID: 38085535 DOI: 10.1021/acs.inorgchem.3c03378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
Single-atom metal-anchored porphyrin-based metal-organic frameworks (MOFs) have shown excellent light absorption, catalytic sites, and high stability during photocatalytic reactions, while there are still challenges for facile assembly with quantum dots to enhance catalytic dynamics. Herein, a kind of Fe single atom-doped MOF material (Fe-MOF-525) was ball milled with CdS in a proper ratio through Fe-N4 and Fe-N-C bonding, which showed the enhanced photoinduced carrier separation ability. As a result, extended light absorption ranges of CdS/Fe-MOF-5252.3 induced the promotion of the photocatalytic hydrogen (H2) value (3638.6 μmol g-1 h-1), which was 7.2 and 2.3 times higher than those of Fe-MOF-525 and CdS. In this work, the facile synthetic technique, specific active sites, and enhanced catalytic dynamics in the composite highlight the future research on MOF-based heterojunctions and their potential photocatalysis applications..
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Affiliation(s)
- Yulu Wu
- Key Laboratory of Chemical Additives for China National Light Industry, School of Chemistry & Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yanning Qu
- Key Laboratory of Chemical Additives for China National Light Industry, School of Chemistry & Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Chenyang Su
- Key Laboratory of Chemical Additives for China National Light Industry, School of Chemistry & Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Xiufang Yang
- Key Laboratory of Chemical Additives for China National Light Industry, School of Chemistry & Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yuhao Yang
- Key Laboratory of Chemical Additives for China National Light Industry, School of Chemistry & Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yanan Zhang
- Key Laboratory of Chemical Additives for China National Light Industry, School of Chemistry & Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Wenhuan Huang
- Key Laboratory of Chemical Additives for China National Light Industry, School of Chemistry & Chemical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
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Ghosh A, Karmakar S, Dey A, Maji TK. Modular Gating of Ion Transport by Postsynthetic Charge Transfer Complexation in a Metal-Organic Framework. J Am Chem Soc 2023. [PMID: 38051543 DOI: 10.1021/jacs.3c11024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Nature's design of biological ion channels that demonstrates efficient gating and selectivity brings to light a very promising model to mimic and design for achieving selective and tunable ion transport. Functionalized nanopores that permit modulation of the pore wall charges are a compelling approach to gain control over the ion transport mechanism through the pores. This makes way for employing a noncovalent supramolecular approach for attaining charge reversal of the MOF pore walls using donor-acceptor pairs that can demonstrate strong charge transfer interactions. Herein, robust Zr4+-based mesoporous MOF-808 was postsynthetically modified into an anion-selective nanochannel (MOF-808-MV) by modification with dicationic viologen-based motifs. Charge modulation and even reversal of the MOF-808-MV pore walls were then explored taking advantage of strong charge transfer interactions between the grafted dicationic viologen acceptor moieties and anionic, π-electron-rich donor guest molecules such as pyranine (PYR) and tetrathiafulvalene tetrabenzoic acid (TTF-TA). Tunability of the MOF pore charge from positive to neutral to negative was achieved via simple methodologies such as diffusion control in case of guest molecule like PYR and by pH modulation for pH-responsive guest like TTF-TA. This results in a concomitant modulation in the selectivity of the nanochannel, rendering it from anion-selective to ambipolar to cation-selective. Furthermore, as a real-time application of this ion channel, Na+ ion conductivity (σ = 3.5 × 10-5 S cm-1) was studied at ambient temperature.
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Parambil SRV, Rahimi FA, Ghosh R, Nath S, Maji TK. Pore-Confined π-Chromophoric Tetracene as a Visible Light Harvester toward MOF-Based Photocatalytic CO 2 Reduction in Water. Inorg Chem 2023; 62:19312-19322. [PMID: 37963226 DOI: 10.1021/acs.inorgchem.3c02926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2023]
Abstract
Integrating photoactive π-chromophoric guest molecules inside the MOF nanopore can result in the emergence of light-responsive features, which in turn can be utilized for developing photoactive materials with inherent properties of MOF. Herein, we report the confining of π-chromophoric tetracene (TET) molecules inside the nanospace of postmodified Zr-MOF-808 (Zr-MOF) with MBA molecules (MBA = 2-(5'-methyl-[2,2'-bipyridine]-5-yl)acetic acid) for effectively utilizing its light-harvesting properties toward photocatalytic CO2 reduction. The confinement of the TET molecules as a photosensitizer and the covalent grafting of a catalytically active [Re(MBA)(CO)3Cl] complex, postsynthetically, result in a single integrated catalytic system named Zr-MBA-TET-Re-MOF. Photoreduction of CO2 over Zr-MBA-TET-Re-MOF showed the evolution of 805 μmol g-1 CO with 99.9% selectivity after 10 h of continuous visible light irradiation in water without any additional sacrificial electron donor and having the apparent quantum efficiency of 1.3%. In addition, the catalyst demonstrated an appreciable activity even under direct sunlight irradiation in aqueous medium with a maximum production of 362.7 μmol g-1 CO, thereby mimicking artificial photosynthesis. Moreover, electron transfer from TET to the catalytic center was supported by the formation of photoinduced TET radical cation, as inferred from in situ UV-vis spectra, electron paramagnetic resonance (EPR) analysis, and transient absorption (TA) studies. Additionally, the in situ diffuse reflectance infrared Fourier transform (DRIFT) measurements support that the photoreduction of CO2 to CO proceeds via *COOH intermediate formation. The close proximity of the light-harvesting molecule and catalytic center facilitated facile electron transfer from the photosensitizer to the catalyst during the CO2 reduction.
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Affiliation(s)
- Sneha Raj V Parambil
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post, Bangalore 560064, India
| | - Faruk Ahamed Rahimi
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post, Bangalore 560064, India
| | - Rajib Ghosh
- Radiation and Photochemistry Division, Bhabha Atomic Research Center, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Sukhendu Nath
- Radiation and Photochemistry Division, Bhabha Atomic Research Center, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Tapas Kumar Maji
- Molecular Materials Laboratory, Chemistry and Physics of Materials Unit, School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur Post, Bangalore 560064, India
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11
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Zhou L, An Y, Ma J, Hao G, Li Z, Chen J, Chou LY. A highly efficient synthetic strategy for de novo NP encapsulation into metal-organic frameworks: enabling further modulated control of catalytic properties. Chem Sci 2023; 14:13126-13133. [PMID: 38023511 PMCID: PMC10664540 DOI: 10.1039/d3sc05179j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 10/30/2023] [Indexed: 12/01/2023] Open
Abstract
De novo encapsulation is a prevalent method to prepare composite materials where the structure-tunable metal nanoparticles (NPs) are holistically coated with metal-organic frameworks (MOFs). This method has been demonstrated to have promise in various fields but the extensive application of this approach is still challenging. This study proposed, for the first time, leveraging a specific surface-energy-dominated (SED) mechanism to achieve a highly efficient synthetic strategy for de novo NP encapsulation. The generality of this strategy is proved in applying to various MOFs, reaction conditions and the use of capping agents. By applying the strategy, Pd NPs with different morphologies are encapsulated in UiO-67, which is prone to self-assembly without coating, and an interesting enhancement is investigated in the selective semihydrogenation of alkynes on different Pd surfaces. These results demonstrate that the control of surface energy is a feasible method for efficient NP encapsulation which sheds light on the rational design of MOF-based composites for future applications.
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Affiliation(s)
- Li Zhou
- School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
| | - Yuanyuan An
- School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
| | - Jialong Ma
- School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
| | - Guoxiu Hao
- School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
| | - Zhehui Li
- Department of Chemistry Merkert Chemistry, Boston College, Chestnut Hill Massachusetts 02467 USA
| | - Junchen Chen
- School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
| | - Lien-Yang Chou
- School of Physical Science and Technology, ShanghaiTech University Shanghai 201210 China
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12
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He X. Fundamental Perspectives on the Electrochemical Water Applications of Metal-Organic Frameworks. NANO-MICRO LETTERS 2023; 15:148. [PMID: 37286907 PMCID: PMC10247659 DOI: 10.1007/s40820-023-01124-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/10/2023] [Indexed: 06/09/2023]
Abstract
HIGHLIGHTS The recent development and implementation of metal-organic frameworks (MOFs) and MOF-based materials in electrochemical water applications are reviewed. The critical factors that affect the performances of MOFs in the electrochemical reactions, sensing, and separations are highlighted. Advanced tools, such as pair distribution function analysis, are playing critical roles in unraveling the functioning mechanisms, including local structures and nanoconfined interactions. Metal-organic frameworks (MOFs), a family of highly porous materials possessing huge surface areas and feasible chemical tunability, are emerging as critical functional materials to solve the growing challenges associated with energy-water systems, such as water scarcity issues. In this contribution, the roles of MOFs are highlighted in electrochemical-based water applications (i.e., reactions, sensing, and separations), where MOF-based functional materials exhibit outstanding performances in detecting/removing pollutants, recovering resources, and harvesting energies from different water sources. Compared with the pristine MOFs, the efficiency and/or selectivity can be further enhanced via rational structural modulation of MOFs (e.g., partial metal substitution) or integration of MOFs with other functional materials (e.g., metal clusters and reduced graphene oxide). Several key factors/properties that affect the performances of MOF-based materials are also reviewed, including electronic structures, nanoconfined effects, stability, conductivity, and atomic structures. The advancement in the fundamental understanding of these key factors is expected to shed light on the functioning mechanisms of MOFs (e.g., charge transfer pathways and guest-host interactions), which will subsequently accelerate the integration of precisely designed MOFs into electrochemical architectures to achieve highly effective water remediation with optimized selectivity and long-term stability.
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Affiliation(s)
- Xiang He
- Department of Mechanical and Civil Engineering, Florida Institute of Technology, Melbourne, FL, 32901, USA.
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13
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Qin T, Wei J, Zhou C, Zeng X, Zhou J, Li YY. Directional crystal facets deposition constructed BiVO4/Ag/MnO2 with plasmon resonance for enhanced photocatalytic degradation of antibiotics in water. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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14
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Liu T, Li Y, Lv Y, Qiu P, Xiong Y, Tian J. Three-dimensional S-scheme heterojunction by integration of purple tungsten oxide nanowires and cadmium sulfide nanospheres for effective photocatalytic hydrogen generation. J Colloid Interface Sci 2023; 640:568-577. [PMID: 36878074 DOI: 10.1016/j.jcis.2023.02.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Revised: 02/25/2023] [Accepted: 02/27/2023] [Indexed: 03/06/2023]
Abstract
The practical photocatalytic application of cadmium sulfide (CdS) has been significantly constrained by fast carrier recombination and significant photocorrosion. Therefore, we developed a three-dimensional (3D) step-by-step (S-scheme) heterojunction using the coupling interface between purple tungsten oxide (W18O49) nanowires and CdS nanospheres. The photocatalytic hydrogen evolution rate of optimized W18O49/CdS 3D S-scheme heterojunction can reach 9.7 mmol·h-1·g-1, 7.5 and 16.2 times greater than pure CdS (1.3 mmol·h-1·g-1) and 10 wt%-W18O49/CdS (mechanical mixing, 0.6 mmol·h-1·g-1), proving that the tight S-scheme heterojunction constructed by the hydrothermal method can efficiently enhance the carrier separation. Notably, the apparent quantum efficiency (AQE) of W18O49/CdS 3D S-scheme heterojunction approaches 7.5% and 3.5% at 370 nm and 456 nm, respectively, which is 7.5 and 8.8 times than pure CdS (1.0% and 0.4%). The produced W18O49/CdS catalyst also has relative stability of structure and hydrogen production. Additionally, the H2 evolution rate of W18O49/CdS 3D S-scheme heterojunction is 1.2 times greater than 1 wt%-platinum (Pt)/CdS (8.2 mmol·h-1·g-1), which indicates that the W18O49 can effectively replace the precious metal for boosting the hydrogen production rate.
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Affiliation(s)
- Teng Liu
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yuezheng Li
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Yinghao Lv
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Pengyuan Qiu
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Ya Xiong
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Jian Tian
- School of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
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15
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Haldar R, Ghosh A, Maji TK. Charge transfer in metal-organic frameworks. Chem Commun (Camb) 2023; 59:1569-1588. [PMID: 36655919 DOI: 10.1039/d2cc05522h] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Metal-organic frameworks (MOFs, also known as porous coordination polymers or PCPs) are a novel class of crystalline porous material. The tailorable porous structure, in terms of size, geometry and function, has attracted the attention of researchers across all disciplines of materials science. One of the many exciting aspects of MOFs is that through directional and reversible coordination bonding, organic linkers (chromophores with metal-coordinating functional groups) and metal ions (and clusters) can be spatially organized in a preconceived geometry. The well-defined spatial geometry of the metals and linkers is very advantageous for optoelectronic functions (solar cells, light-emitting diodes, photocatalysts) of the materials. This feature article evaluates the scope of charge transfer (CT) interactions in MOFs, involving the organic linkers and metal ion or cluster components. Irrespective of the type (size, shape, electronic property) of organic chromophores involved, MOFs provide an insightful path to design and make the CT process efficient. The selected examples of MOFs with CT characteristics do not only illustrate the design principles but render a pathway towards understanding the complex photophysical processes and implementing those for future optoelectronic and catalytic applications.
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Affiliation(s)
- Ritesh Haldar
- Tata Institute of Fundamental Research (TIFR) Hyderabad, Hyderabad 500046, India.
| | - Adrija Ghosh
- New Chemistry Unit (NCU), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India.
| | - Tapas Kumar Maji
- New Chemistry Unit (NCU), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India. .,Chemistry and Physics of Materials Unit (CPMU), School of Advanced Materials (SAMat), Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India
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16
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Hou W, Chen C, Xie D, Xu Y. Substituted Ti(IV) in Ce-UiO-66-NH 2 Metal-Organic Frameworks Increases H 2 and O 2 Evolution under Visible Light. ACS APPLIED MATERIALS & INTERFACES 2023; 15:2911-2921. [PMID: 36609181 DOI: 10.1021/acsami.2c18389] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Metal-organic frameworks (MOFs) as photocatalysts have received increasing attention. In this work, a dual metal-substituted UiO-66-NH2 (Ti/Ce-MOF) containing different Ti/Ce mole ratios (x = 0-2.46) has been prepared via post-synthetic exchange between Ce-UiO-66 and TiCl4, followed by amination. The solid had a high surface area (828-937 m2/g) and a large pore volume (0.451-0.507 m3/g). Under visible light, Ti/Ce-MOF showed x-dependent activity for H2O reduction and oxidation on a film electrode, respectively. However, such a change for H2 evolution in a Na2S/Na2SO3 aqueous solution was observed only after CdS loading. In combination with the photoluminescence and band parameters, we propose that the photoactivity of Ti/Ce-MOF for redox reaction is determined by its ability for electron transfer. Furthermore, there is an interfacial electron transfer from Ti/Ce-MOF to CdS and a hole transfer from CdS to Ti/Ce-MOF, respectively, significantly improving the efficiency of charge separation for redox reactions. This work offers a new insight that Ti substitution benefits the performance of Ce-based MOF.
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Affiliation(s)
- Wenqing Hou
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Chen Chen
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Diya Xie
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
| | - Yiming Xu
- State Key Laboratory of Silicon Materials and Department of Chemistry, Zhejiang University, Hangzhou 310027, P. R. China
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17
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Fang Z, Yue X, Li F, Xiang Q. Functionalized MOF-Based Photocatalysts for CO 2 Reduction. Chemistry 2023; 29:e202203706. [PMID: 36606747 DOI: 10.1002/chem.202203706] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/07/2023]
Abstract
Metal-organic frameworks (MOFs) materials have become a research forefront in the field of photocatalytic CO2 reduction attributed to their ultra-high specific surface area, adjustable structure, and abundant catalytic active sites. Particularly, MOFs can be facilely tuned to match CO2 photoreduction by utilizing post-modification of metal nodes, functionalization of organic linkers, and combination with other active materials. Herein, the recent advances in the construction strategy of MOF-based photocatalysts materials for CO2 reduction are highlighted. Some systematic modification strategies on MOF-based photocatalysts are also discussed, such as modification of metal sites and organic ligands, construction of heterojunction, introduction of single/dual-atom, and strain engineering. Finally, the future development directions of MOF-based photocatalysts in the field of CO2 reduction are presented.
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Affiliation(s)
- Zhaohui Fang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Xiaoyang Yue
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Fang Li
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
| | - Quanjun Xiang
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Electronic Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China
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18
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Mao S, Shi JW, Sun G, Zhang Y, Ma D, Song K, Lv Y, Zhou J, Wang H, Cheng Y. PdS Quantum Dots as a Hole Attractor Encapsulated into the MOF@Cd 0.5Zn 0.5S Heterostructure for Boosting Photocatalytic Hydrogen Evolution under Visible Light. ACS APPLIED MATERIALS & INTERFACES 2022; 14:48770-48779. [PMID: 36259606 DOI: 10.1021/acsami.2c15052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Herein, a new photocatalyst PdS@UiOS@CZS is successfully synthesized, where thiol-functionalized UiO-66 (UiOS), a metal-organic framework (MOF) material, is used as a host to encapsulate PdS quantum dots (QDs) in its cages, and Cd0.5Zn0.5S (CZS) solid solution nanoparticles (NPs) are anchored on its outer surface. The resultant PdS@UiOS@CZS with an optimal ratio between components displays an excellent photocatalytic H2 evolution rate of 46.1 mmol h-1 g-1 under visible light irradiation (420∼780 nm), which is 512.0, 9.2, and 5.9 times that of pure UiOS, CZS, and UiOS@CZS, respectively. The reason for the significantly enhanced performance is that the encapsulated PdS QDs strongly attract the photogenerated holes into the pores of UiOS, while the photogenerated electrons are effectively migrated to CZS due to the heterojunction effect, thereby effectively suppressing the recombination of charge carriers for further high-efficiency hydrogen production. This work provides an idea for developing efficient photocatalysts induced by hole attraction.
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Affiliation(s)
- Siman Mao
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jian-Wen Shi
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Guotai Sun
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yijun Zhang
- Key Laboratory of Electronic Ceramics and Devices of Ministry of Education, Department of Electronics and Information, Xi'an Jiaotong University, Xi'an 710049, China
| | - Dandan Ma
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Kunli Song
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yixuan Lv
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jun Zhou
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Hongkang Wang
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yonghong Cheng
- State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China
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19
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The Advanced Synthesis of MOFs-Based Materials in Photocatalytic HER in Recent Three Years. Catalysts 2022. [DOI: 10.3390/catal12111350] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Since the advent of metal–organic frameworks (MOFs), researchers have paid extensive attention to MOFs due to their determined structural composition, controllable pore size, and diverse physical and chemical properties. Photocatalysis, as a significant application of MOFs catalysts, has developed rapidly in recent years and become a research hotspot continuously. Various methods and approaches to construct and modify MOFs and their derivatives can not only affect the structure and morphology, but also largely determine their properties. Herein, we summarize the advanced synthesis of MOFs-based materials in the field of the photocatalytic decomposition of water to produce hydrogen in the recent three years. The main contents include the overview of the novel synthesis strategies in four aspects: internal modification and structure optimization of MOFs materials, MOFs/semiconductor composites, MOFs/COFs-based hybrids, and MOFs-derived materials. In addition, the problems and challenges faced in this direction and the future development goals were also discussed. We hope this review will help deepen the reader’s understanding and promote continued high-quality development in this field.
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20
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Gogoi H, Pathak SS, Dasgupta S, Panchakarla LS, Nath S, Datta A. Exciton Dynamics in Colloidal CdS Quantum Dots with Intense and Stokes Shifted Photoluminescence in a Single Decay Channel. J Phys Chem Lett 2022; 13:6770-6776. [PMID: 35853205 DOI: 10.1021/acs.jpclett.2c01623] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
CdS quantum dots (QDs), synthesized by a sol-gel method, exhibit significantly Stokes shifted bright photoluminescence (PL), predominantly from the trap states. Surprisingly, the PL decay at the emission maximum is single-exponential. This is an unusual observation for as-prepared QDs and indicates a narrow distribution in the nature of trap states. A closer look reveals an additional fast component for the decays at shorter emission wavelengths, presumably due to the band edge emission, which remains elusive in the steady-state spectra. Indeed, a significantly narrower and blue-shifted emission band is observed in the decay-associated spectra. The contribution of this component to the steady-state PL intensity is shown to be overwhelmed by that of the significantly stronger trap emission. Exciton dynamics in the quantum dots is elucidated using transient absorption spectra, in which the stimulated emission is observed even at low pump power.
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Affiliation(s)
- Hemen Gogoi
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Sushil Swaroop Pathak
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Souradip Dasgupta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | | | - Sukhendu Nath
- Radiation & Photochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India
- Homi Bhabha National Institute, Training School Complex, Anushaktinagar, Mumbai 400 094, India
| | - Anindya Datta
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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