Article
Chemistry, Multidisciplinary
Shih-Hao Wang, Rathinam Raja, Chuen-Yo Hsiow, Farheen Khurshid, Hau-Ren Yang, Po-Wen Chung, Yu-Ying Lai, Ru-Jong Jeng, Leeyih Wang
Summary: This work demonstrates the efficient catalytic conversion of CO2 to CO using a fullerene derivative, DTBT-C-60, as a photocatalyst, which exhibits excellent solar absorption and durable catalytic activity.
Article
Chemistry, Physical
Tianfang Zheng, Yanxiang Liu, Yuanlin Li, Lin Yang, Hangchen Ren, Xiao-Feng Wang, Ritsuko Fujii, Osamu Kitao, Takashi Nakamura, Shin-ichi Sasaki
Summary: Harvesting and converting solar energy into hydrogen production is a new strategy for addressing the global energy crisis. In this study, three chlorophyll-related sensitizers were designed to extend the photo-response of TiO2 photocatalysts, enabling panchromatic light-absorption and simulating the charge separation process in natural photosynthesis. The Pt/TiO2 composite sensitized with Chl-alpha type dyad demonstrated the best photocatalytic performance for water splitting hydrogen evolution reaction, achieving a hydrogen evolution rate of 5.4 mmol g(-1)h(-1). Various spectroscopic and electrochemical measurements were conducted to understand the key factors influencing the performance of Pt/TiO2-based photocatalysts. This work provides valuable insights for the development of new organic dye-sensitizers to enhance the performance of TiO2-based photocatalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Ting He, Wenlong Zhen, Yongzhi Chen, Yuanyuan Guo, Zhuoer Li, Ning Huang, Zhongping Li, Ruoyang Liu, Yuan Liu, Xu Lian, Can Xue, Tze Chien Sum, Wei Chen, Donglin Jiang
Summary: Attempts to develop efficient hydrogen evolution photocatalysts have been challenging. In this study, the authors developed a photocatalyst system with stable covalent organic frameworks that achieved high performance hydrogen evolution. By controlling the molecular interfaces, they were able to identify the different roles of electron transfer, active site immobilisation, and water transport in the photocatalytic process. The integrated interfacial design approach significantly improved the hydrogen evolution rate and quantum yield, making it a promising step towards designing solar-to-chemical energy conversion systems.
NATURE COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
An Li, Yufeng Zhang, Zichen Sun, Zhiyang Niu, Guangxu Lan
Summary: Metal-organic layers (MOLs) are a two-dimensional version of metal-organic frameworks (MOFs) with high-density and accessible open sites, which have potential applications in photocatalysis, artificial photosynthesis, and fluorescence imaging. This review provides an overview of the structural design and synthesis strategies of MOLs, focusing on the applications of photosensitizing MOLs.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yusuke Kuramochi, Yuto Suzuki, Somyo Asai, Tomohiro Suzuki, Hiroki Iwama, Motoko S. Asano, Akiharu Satake
Summary: We synthesized three new dyads composed of a Zn porphyrin and fac-Re(bpy)(CO)(3)Br units, and investigated their photophysical properties and catalytic activity in CO2 reduction. Among the three dyads, ZnP-5Bpy=Re-Br showed the highest durability and reaction efficiency, reaching a reaction quantum yield of 24%. The significant activity in ZnP-5Bpy=Re-Br is attributed to the absence of electron accumulation on the Zn porphyrin, facilitated by dual interactions of triethanolamine (TEOA) with the Re and Zn ions in the dyad. The catalytic activities and RTP properties are considered independent but greatly influenced by the connecting positions on the bpy ligand in ZnP-nBpy=Re-Br.
Review
Chemistry, Physical
Lei Wang
Summary: Artificial photosynthesis plays a significant role in energy conversion and environmental pollutant treatment. Metal-based complexes, as excellent photocatalysis photosensitizers, are highlighted in this review. The evaluation parameters for photosensitizers are summarized and the recent developments in molecular photosensitizers based on transition metal complexes are presented.
Article
Biochemistry & Molecular Biology
Adam Golcs, Korinna Kovacs, Panna Vezse, Tunde Toth, Peter Huszthy
Summary: New acridino-diaza-20-crown-6 ether derivatives have been designed and synthesized as turn-on type fluorescent chemosensors, showing remarkable fluorescence enhancement only towards Zn2+, Al3+, and Bi3+ among 23 metal ions. These sensors exhibit high sensitivity and excellent coordinating ability, with detection limits ranging from 59 nM to micromoles, and are not affected by pH or competing ions. The N-substituents variations in the host-backbone provide diverse opportunities for immobilization and practical applications without compromising molecular recognition abilities.
Article
Chemistry, Physical
Shujie Tian, Sheng-Mei Lu, Taifeng Liu, Fengyuan Liu, Chengcheng Feng, Xianwen Zhang, Hefeng Zhang, Chunmei Ding, Can Li
Summary: In this study, CoMo2.75Sx was found to be efficient for the regiospecific electrocatalytic reduction of NAD(+) to NADH, achieving a selectivity as high as 89% for 1,4-NADH. It was discovered that the adsorbed hydrogen and hydride formed on the electrode surface are crucial for the selective formation of 1,4-NADH.
Article
Chemistry, Multidisciplinary
Guanglai Mo, Qiao Wang, Wanyue Lu, Chen Wang, Peng Li
Summary: Recently, there has been a growing interest in artificial and semi-artificial photosynthesis to address the crisis of energy from fossil fuels and reduce excessive CO2 emissions. Metal-organic frameworks (MOFs) have emerged as ideal platforms for constructing artificial photosynthesis systems due to their unique properties and tunable functionalities. This review discusses the characteristics, superiorities, and challenges of MOF-based photocatalysts, and provides a detailed summary of several common design strategies for MOF-based artificial systems. Additionally, the review highlights the applications, mechanisms, and future research directions of MOF-based photocatalysts.
CHINESE JOURNAL OF CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Jie Zhou, Jie Li, Liang Kan, Lei Zhang, Qing Huang, Yong Yan, Yifa Chen, Jiang Liu, Shun-Li Li, Ya-Qian Lan
Summary: This study reports the development of a crystalline hetero-metallic cluster catalyst, MCOF-Ti6Cu3, based on the cooperation between MOF and COF. The catalyst exhibits efficient coupling of photocatalytic CO2 reduction and H2O oxidation by utilizing dynamic covalent bonds between clusters to promote photo-induced charge separation and transfer. The MCOF-Ti6Cu3 catalyst shows fine activity in the conversion of CO2 and water into HCOOH.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Xiu-Ping Li, Rong-Jin Huang, Cong Chen, Tianduo Li, Yu-Ji Gao
Summary: The study demonstrates that the photocatalytic H-2 evolution activity of quantized indium chalcogenide semiconductors can be significantly enhanced by the co-decoration of transition metals zinc and copper. Unlike traditional metal ion doping strategies, this new approach coordinates the regulation of conduction and valence bands to achieve bandgap narrowing and increasing thermodynamic driving force for proton reduction.
Review
Chemistry, Inorganic & Nuclear
Yasuo Matsubara, Osamu Ishitani
Summary: The formation of metal hydride complexes or organic hydride compounds through photochemical reactions is crucial in converting light energy into chemical bonds during various photocatalytic reactions. This paper reviews the research conducted over the past 30 years on light-induced hydride formation mediated by transition metal complexes and their applications. The key aspect of photocatalytic reactions involving redox reactions lies in the conversion of multiple electrons produced by photochemical one-electron transfer processes to form a hydride.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Physical
Yoshinobu Kamakura, Shuhei Yasuda, Naoki Hosokawa, Shunta Nishioka, Sawa Hongo, Toshiyuki Yokoi, Daisuke Tanaka, Kazuhiko Maeda
Summary: Metal-organic frameworks and coordination polymers are promising candidates for high-performance photocatalysts due to their tunable electronic and structural properties. This study presents a unique coordination polymer with a metal-sulfur bond, exhibiting efficient photocatalytic reduction of CO2 to formate under visible light irradiation.
Article
Chemistry, Physical
Taotao Wang, Hongyun Cao, Ming Huang, Pingwu Du
Summary: This study successfully fabricated an organo-inorganic hybrid photoanode with high photocurrent density and stability. Further investigations revealed that NiFe MOFs and molecular cobaloxime cocatalyst effectively facilitate charge separation and improve water oxidation kinetics, respectively.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Bettina Baumgartner, P. Tim Prins, Jaap N. Louwen, Matteo Monai, Bert M. Weckhuysen
Summary: Capturing and converting CO2 through artificial photosynthesis using photoactive, porous materials is a promising approach for addressing increasing CO2 concentrations. Porphyrinic Zr-based metal-organic frameworks (MOFs) incorporating a photosensitizer in the porous structure show potential for CO2 sorption and activation. This study focuses on the initial step of artificial photosynthesis: CO2 adsorption and activation in the presence of water, revealing the influence of humidity and pore-size on CO2 sorption and light harvesting in porphyrinic MOFs.
