Article
Chemistry, Multidisciplinary
Ruixue Feng, Dong Li, Hongzhou Yang, Chengyu Li, Yunxuan Zhao, Geoffrey I. N. Waterhouse, Lu Shang, Tierui Zhang
Summary: In this study, a low-cost Pt atomic layers catalyst was successfully prepared on a CrN substrate via thermal ammonolysis method. The catalyst exhibited excellent activity and durability, making it suitable for various applications.
ADVANCED MATERIALS
(2023)
Review
Chemistry, Physical
Young Hyun Hong, Yong-Min Lee, Wonwoo Nam, Shunichi Fukuzumi
Summary: This review provides an overview of the functional model reactions of photosystem II (PSII) and photosystem I (PSI) for photocatalytic water oxidation and reduction, respectively. The roles of high-valent metal-oxo, -hydroperoxo,-peroxo, and-superoxo complexes as reaction intermediates in photocatalytic water oxidation are discussed, as well as the catalytic mechanisms of water oxidation. The roles of metal hydride complexes in hydrogen evolution and NAD+ reduction to NADH are also explored. The aim is to construct molecular artificial photosynthetic systems that can split water into H2 and O2 in a 2:1 ratio, thus achieving artificial photosynthesis at the molecular level.
Review
Chemistry, Physical
Young Hyun Hong, Yong-Min Lee, Wonwoo Nam, Shunichi Fukuzumi
Summary: Water oxidation in photosystem II (PSII) is catalyzed by Mn4Ca clusters in the oxygen-evolving complex (OEC), involving a manganese(V)oxo species as an active reaction intermediate. Photogenerated charge separation in the PSII photosynthetic reaction center is used to reduce plastoquinone to plastoquinol. In photosystem I (PSI), plastoquinol reduces NADP+ to NADPH via photogenerated charge separation, which serves as a reductant for CO2 reduction in the Calvin cycle. Extensive research has been conducted to mimic PSII and PSI for photocatalytic water oxidation and reduction, with a focus on high-valent metal-oxo, -hydroperoxo, -peroxo, and -superoxo intermediates and metal hydride complexes.
Review
Multidisciplinary Sciences
Yanqin Miao, Mengna Yin
Summary: UEMLs have been widely applied to fabricate OLEDs and have advantages of simplified device structure and preparation process, more flexible design, lower material consumption, and complete exciton utilization.
Article
Nanoscience & Nanotechnology
Sa'ar Shor Peled, Kumaraswamy Miriyala, Alexander Rashkovskiy, Ron Fishov, Vitali Gelberg, Joshua Pelleg, Daniel A. Grave
Summary: Silver thin film mirrors are potential candidates for enhancing light absorption in ultrathin film semiconductor photoabsorbers. However, the thermal etching and decreased reflectance of silver films caused by high temperature and oxygen atmosphere hinder their use. This study demonstrates that epitaxial growth of silver can mitigate thermal etching and enable the direct deposition of metal-oxide thin film photoabsorbers at elevated temperatures without degrading the optical properties of the silver layer. A proof-of-concept device with stable operation in photoelectrochemical water splitting is fabricated using this approach.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Longlong Jiang, Chenyin Xu, Xiaocheng Wu, Xue Zhao, Lijun Zhang, Guobing Zhang, Xiaohong Wang, Longzhen Qiu
Summary: Deep ultraviolet-light-stimulated artificial synaptic devices have potential applications in various fields and can simulate various synaptic behaviors. The proposed artificial synaptic structures on flexible substrates also successfully simulate typical synaptic behaviors.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Alexander Ryabchun, Federico Lancia, Nathalie Katsonis
Summary: Nano- and micro-actuating systems have great potential in various applications, and light-responsive cholesteric liquid crystal networks can exhibit waving motion of surface topography upon irradiation, controlled by tuning the geometry of liquid crystal structures. This work demonstrates the possibility of using self-organizing systems to engineer dynamic materials with nanoscale precision.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Mingming Wang, Xiaopeng Cheng, Tianci Cao, Jiajia Niu, Rui Wu, Xianqiang Liu, Yuefei Zhang
Summary: The study successfully suppressed dendritic growth and significantly improved cycling lifetime of lithium metal anode by applying a TiO2 coating layer. The optimized 5 nm TiO2 layer exhibited the best capacity, cycling stability, and rate capability. This research provides an effective protection method for lithium metal anodes, which could be crucial for the future design of next-generation Li metal batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiaoyu Wang, Houjin He, Junhua Gao, Haibo Hu, Shiwei Tang, Xiaoyun Li, Xiuhong Li, Hongtao Cao
Summary: The study reveals that maintaining fine particle size (less than 10 nm), isolated states, and suitable separations are crucial for achieving high light absorption features in W-Al2O3 nanocermets at high temperatures. The intrinsic absorption of W NPs, their plasmonic excitation, and coupling effects among them significantly contribute to the optical performance of the cermet layers and the whole absorber. This research provides a valuable criterion for maintaining optical performances of nanocermet layers and cermet-based solar absorbers under heating for improved thermal robustness.
JOURNAL OF MATERIOMICS
(2021)
Article
Optics
Shengjun Zhou, Zhefu Liao, Ke Sun, Ziqi Zhang, Yinzuo Qian, Pengfei Liu, Peng Du, Jingjing Jiang, Zhenxing Lv, Shengli Qi
Summary: This study develops ultrathin tunnel junction (UTJ) deep-UV light-emitting diodes (LEDs) with a low operating voltage of 5.7 V. The formation of Ohmic contact between high-work-function Ni/Au and Mg-Si co-doped n(+)- Al0.45Ga0.55N layer in UTJ is discovered. A high-efficiency sterilization deep-UV light source integrated with 120 UTJ deep-UV LED chips is developed.
LASER & PHOTONICS REVIEWS
(2023)
Review
Energy & Fuels
Yi Xue, Xiaoxia Zhou, Yufang Zhu, Hangrong Chen
Summary: This review focuses on the mechanism of CO2 reduction in light-driven reactions and the characteristics of candidate materials, as well as strategies to improve the efficiency and selectivity of catalytic reactions.
Article
Engineering, Environmental
Yanqin Miao, Guoliang Wang, Mengna Yin, Yuanyuan Guo, Bo Zhao, Hua Wang
Summary: In this study, a novel scheme was proposed to achieve simple and efficient monochrome/white organic light-emitting diodes (OLEDs) by combining thermally activated delayed fluorescence (TADF) interfacial exciplex and phosphorescent ultrathin emitting layers (Ph-UEMLs). The monochrome OLEDs (blue, green, orange, and red) exhibited a low turn-on voltage and high device performance, with the highest external quantum efficiency (EQE) reaching 20%. The fabricated white OLEDs also obtained excellent performance with a low turn-on voltage and high EQEs, indicating great potential for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Tim Schlossarek, Vladimir Stepanenko, Florian Beuerle, Frank Wuerthner
Summary: This study investigates water-soluble multinuclear complexes based on ruthenium 2,2'-bipyridine-6,6'-dicarboxylate (bda) and ditopic bipyridine linker units for three-component visible light-driven water oxidation catalysis. The catalytic efficiency is significantly enhanced in the absence of organic co-solvents and with increasing oligomer length, which is attributed to the self-assembly of linear Ru(bda) oligomers into aggregated superstructures. The obtained turnover frequencies (up to 14.9 s(-1)) and turnover numbers (more than 1000) per ruthenium center are the highest reported so far for Ru(bda)-based photocatalytic water oxidation systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Multidisciplinary
Wei-Jia Wang, Yong-Kang Zhang, An-Guo Wu, Liang-Nian He
Summary: Metal-organic layers (MOLs), as a novel 2D material, have shown great potential in the photocatalytic CO2 reduction reaction (PCO2RR). In this study, a 2D ultrathin layer material with bis-metallic catalytic sites was synthesized and found to significantly enhance the visible light-driven PCO2RR performance. The key factors affecting the PCO2RR efficiency, such as morphology, catalytic sites, and intrinsic properties, were systematically investigated. The results provide valuable insights for the design of high-performance photocatalysts.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Higor A. Garona, Fabio M. Cavalcanti, Thiago F. de Abreu, Martin Schmal, Rita M. B. Alves
Summary: This study used Machine Learning models to predict optimal reaction conditions for Fischer-Tropsch Synthesis, showing the efficacy of neural networks in predicting key variables. In comparison to recent studies, this research included more variables in the model such as catalyst support, active phase, and promoters. The Fe-based catalyst showed the highest light olefins selectivity and yield at optimal conditions, despite emitting the most carbon dioxide.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Jaime Mateos-Gil, Laura Rodriguez-Perez, Maria Moreno Oliva, Georgios Katsukis, Carlos Romero-Nieto, Ma Angeles Herranz, Dirk M. Guldi, Nazario Martin
Article
Multidisciplinary Sciences
Pingwei Liu, Zhong Jin, Georgios Katsukis, Lee William Drahushuk, Steven Shimizu, Chih-Jen Shih, Eric D. Wetzel, Joshua K. Taggart-Scarff, Bo Qing, Krystyn J. Van Vliet, Richard Li, Brian L. Wardle, Michael S. Strano
Article
Chemistry, Multidisciplinary
Vedran Jovic, Simon Moser, Soren Ulstrup, Dana Goodacre, Emmanouil Dimakis, Roland Koch, Georgios Katsoukis, Luca Moreschini, Sung-Kwan Mo, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, Theodore D. Moustakas, Kevin E. Smith
Article
Nanoscience & Nanotechnology
Georgios Katsoukis, Heinz Frei
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Chemistry, Multidisciplinary
Georgios Katsukis, Jenny Malig, Christian Schulz-Drost, Susanne Leubner, Norbert Jux, Dirk M. Guldi
Article
Chemistry, Multidisciplinary
Julia Schornbaum, Benjamin Winter, Stefan P. Schiessl, Florentina Gannott, Georgios Katsukis, Dirk M. Guldi, Erdmann Spiecker, Jana Zaumseil
ADVANCED FUNCTIONAL MATERIALS
(2014)
Article
Chemistry, Multidisciplinary
Maria-Eleni Ragoussi, Georgios Katsukis, Alexandra Roth, Jenny Malig, Gema de la Torre, Dirk M. Guldi, Tomas Torres
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2014)
Article
Chemistry, Multidisciplinary
Linda Brinkhaus, Georgios Katsukis, Jenny Malig, Ruben D. Costa, Miguel Garcia-Iglesias, Purificacion Vazquez, Tomas Torres, Dirk M. Guldi
Review
Chemistry, Multidisciplinary
Konstantin Dirian, M. Angeles Herranz, Georgios Katsukis, Jenny Malig, Laura Rodriguez-Perez, Carlos Romero-Nieto, Volker Strauss, Nazario Martin, Dirk M. Guldi
Article
Chemistry, Multidisciplinary
Alexandra Roth, Maria-Eleni Ragoussi, Leonie Wibmer, Georgios Katsukis, Gema de la Torre, Tomas Torres, Dirk M. Guldi
Article
Chemistry, Multidisciplinary
Won Jun Jo, Georgios Katsoukis, Heinz Frei
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Hyun Dong Ha, Chang Yan, Georgios Katsoukis, Gaurav A. Kamat, Ivan A. Moreno-Hernandez, Heinz Frei, A. Paul Alivisatos
Article
Nanoscience & Nanotechnology
Hongna Zhang, Ian Weiss, Indranil Rudra, Won Jun Jo, Simon Kellner, Georgios Katsoukis, Elena Galoppini, Heinz Frei
Summary: Ultrathin amorphous silica membranes with embedded organic molecular wires have been used to chemically separate incompatible catalytic environments of CO2 reduction and H2O oxidation while maintaining electronic and protonic coupling between them. Quantitative evaluation of visible-light-induced charge flow across the silica nanomembrane has been achieved through photocurrent measurements, showing linear increase in charge transfer rates with wire density.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Wojciech T. Osowiecki, Jasper J. Nussbaum, Gaurav A. Kamat, Georgios Katsoukis, Marc Ledendecker, Heinz Frei, Alexis T. Bell, A. Paul Alivisatos
ACS APPLIED ENERGY MATERIALS
(2019)