Article
Chemistry, Physical
Xixi Chen, Shujuan Zhan, Dingsheng Chen, Chun He, Shuanghong Tian, Ya Xiong
Summary: The surface and bulk oxygen vacancies in grey Fe doped CeO2-sigma can be tuned to affect light absorption, charge transfer, and catalytic activity, ultimately enhancing catalytic activity by producing more reactive oxygen species and accelerating electron transfer. Surface oxygen vacancies facilitate ozone adsorption, while bulk oxygen vacancies promote ozone dissociation into reactive surface oxygen.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Nanoscience & Nanotechnology
Xiaoran Zheng, Sajjad S. Mofarah, Alan Cen, Claudio Cazorla, Enamul Haque, Ewing Y. Chen, Armand J. Atanacio, Madhura Manohar, Corey Vutukuri, Joel Luke Abraham, Pramod Koshy, Charles C. Sorrell
Summary: Metal oxide pseudocapacitors with low electrical and ionic conductivities can be enhanced through defect engineering and architectural design approaches. This study successfully demonstrated intercalation pseudocapacitance in CeO2-x, optimizing charge transfer, capacitance and kinetics through regulation of defect concentrations. Moreover, ion implantation and reduction processes were found to significantly increase specific capacitance and retention, while ordered oxygen vacancies enabled atomic channels for ion intercalation, enhancing both capacitance performance and electrical conductivities.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Review
Chemistry, Physical
Yuanyuan Ma, Zhimin Tian, Wenfang Zhai, Yongquan Qu
Summary: CeO2 nanozymes with tailorable surface physicochemical properties exhibit diverse catalytic behaviors under different conditions, showing potential for disease diagnosis and treatments.
Review
Materials Science, Ceramics
Vitaly Gurylev, Tsong Pyng Perng
Summary: Defects in zinc oxide (ZnO) play a crucial role in influencing its properties and applications, with potential for improved characteristics through the introduction of oxygen and zinc vacancies. Defective ZnO shows broad application potential in nanoscale devices, yet faces challenges and requires further research for in-depth exploration.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Engineering, Environmental
Jing Li, Fan Yang, Min Jiang, Xiyang Cai, Qiaodan Hu, Junliang Zhang
Summary: The development of perovskite-type electrocatalysts with high activity, excellent durability, and affordable cost is important for promoting clean energy technologies. In this study, Bi(0.15)Sr(0.85)Co(1-x)FexO(3-delta) (x=0.2, 0.4, 0.6, 0.8, 1) perovskite materials were prepared and their OER electrocatalytic activity and durability were investigated. The results showed that the composition BiSC0.8F0.2 exhibited impressive electrocatalytic performances with low overpotential and excellent long-time durability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Qin Zhou, Humaira Akber, Aidi Zhao, Fan Yang, Zhi Liu
Summary: This review summarizes the investigations of water interactions with the ceria low-index surfaces [(111), (100), and (110)]. It covers the atomic structures of CeO2 and reduced CeOx thin films, as well as the anisotropic migration mechanisms of oxygen vacancies and the locations of entangled polarons in reduced ceria. The review also discusses water's adsorption, desorption, dissociation, and redox properties on the ceria low-index surfaces, along with the influences of various factors such as water coverage, ceria film thickness, strain effect, dopant effect, face stability, and solid-liquid interface.
Article
Materials Science, Ceramics
Chen Wu, Xiaoming Qiu, Wenwei Ge, Luyao Chen, Changyi Liu, Hongwei Zhao, Zhaodong Liu, Liang Li, John G. Fisher
Summary: In this study, BFBT-xNN ceramics were fabricated using a solid-state reaction method to obtain high-performance capacitor materials. BFBT ceramics have excellent dielectric and ferroelectric properties, but their energy storage performance is limited by the large hysteresis of their polarization-electric field loops and the low dielectric breakdown strength. A co-doping strategy was designed to overcome these limitations by introducing Nd3+ and Nb5+ ions simultaneously at the A- and B-sites of BFBT ceramics, enhancing their relaxor properties and improving their dielectric breakdown strength.
CERAMICS INTERNATIONAL
(2023)
Article
Materials Science, Ceramics
Qi Zhou, Shizhen Zhu, Zhuang Ma, Yanbo Liu, Ling Liu, Lihong Gao
Summary: Ceria is a potential candidate for high-temperature infrared stealth materials due to its high melting point, oxidation resistance, and low infrared emissivity. This study investigates the effect of oxygen vacancy concentration on the infrared emissivity of ceria. It was found that the emissivity decreases with increasing oxygen vacancy concentrations, which can be attributed to the increase in free carrier concentration, as confirmed by first-principles calculations.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Xianbin Wu, Yifan Zhang, Siyuan Chen, Xingyi Zhan, Hua Zhang, Lei Zhang, Liwei Su, Chaoqi Shen, Huan Chen, Hao Wu, Lianbang Wang
Summary: This study introduces a low-carbon CeOx/Ru@RuO2 nanosheet as an efficient cathode catalyst for Li-O2 batteries and investigates its preparation and working mechanisms using various characterization and electrochemical techniques. The nanosheet exhibits optimized Li-O reaction and Li2O2 formation, providing a new material combination and structure design for developing bifunctional catalyst materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Review
Chemistry, Inorganic & Nuclear
S. Vinoth, Wee-Jun Ong, A. Pandikumar
Summary: This article summarizes the importance of BiOX materials in energy and environmental applications. BiOX has a layered structure and high photocatalytic activity, and its physical and chemical properties and photocatalytic activity can be enhanced by controlling defects. The article also discusses the role of defect engineering in improving the performance of BiOX and prospects the future research opportunities.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Chemistry, Physical
Zeyu Zhou, Lu Chen, Luyao Wang, Yun Liu, Peihong Cheng, Hongru Peng, Jun Cai, Qin Zhou, Yifan Wang, Nan Yang, Beibei Wang, Xue-Qing Gong, Fan Yang, Zhi Liu
Summary: The roles of oxygenvacancies (O-v) and hydride (Ce-H) species in ceria catalysts for selective hydrogenation of alkynes have been investigated. The presence of O-v sites is necessary for the formation of Ce-H species and the dissociative adsorption of propyne. The coexistence of O-v sites and Ce-H species with sufficient concentration is crucial for optimal propene production and selectivity.
Article
Chemistry, Physical
Yi-Ru Hao, Hui Xue, Liang Lv, Jing Sun, Niankun Guo, Tianshan Song, Hongliang Dong, Jiangwei Zhang, Qin Wang
Summary: The CoFe@Fe3N-CNT catalyst exhibits remarkable stability and catalytic performance in the oxygen reduction reaction, with an ultrahigh half-wave potential and high power density, attributed to the synergistic effect of carbon-oxygen double defects and interfacial electronic structure modulation.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Haiwei Lai, Xiangdong Zeng, Ting Song, Shiheng Yin, Bei Long, Atif Ali, Guo-Jun Deng
Summary: This study successfully increased the adsorption of CO2 and promoted its reduction reaction by preparing iron-doped porous CeO2 catalyst with oxygen vacancies. The oxygen vacancies in the iron-doped CeO2 lattice serve as active sites for CO2 reduction, forming strong interactions with CO2 molecules and effectively activating them.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
S. Kokilavani, Abdullah A. AL-ghamdi, Mohammad K. Okla, Saud A. Al-amri, Abdulrahman A. Alatar, Mostafa A. Abdel-Maksoud, Mohammed Aufy, S. Sudheer Khan
Summary: In this study, CQDs sensitized NiFe2O4 spheres anchored CoCr2O4/MoO3-x NSs were successfully prepared and exhibited high doxycycline photodegradation efficiency under visible light irradiation. The abundant oxygen defects and synergistic effect of the photocatalyst contributed to its excellent performance. The composite material also showed remarkable stability and recyclability.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Yi-Xuan Liu, Wanbo Qu, Hao-Cheng Thong, Yang Zhang, Yunfan Zhang, Fang-Zhou Yao, Trong Nghia Nguyen, Jia-Wang Li, Mao-Hua Zhang, Jing-Feng Li, Bing Han, Wen Gong, Haijun Wu, Chaofeng Wu, Ben Xu, Ke Wang
Summary: This study proposes a method based on isolated oxygen vacancies to achieve a well-balanced performance of mechanical quality factor and piezoelectric coefficient in piezoelectric materials. The hardening effect associated with oxygen vacancies shows exceptional stability with increasing vibration velocity. This research has important implications for high-power applications such as pharmaceutical extraction and ultrasonic osteotomes.
ADVANCED MATERIALS
(2022)
Article
Electrochemistry
Takashi Hibino, Kazuyo Kobayashi, Peiling Lv, Masahiro Nagao, Shinya Teranishi, Toshiyuki Mori
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2017)
Article
Chemistry, Multidisciplinary
Shigeharu Ito, Toshiyuki Mori, Pengfei Yan, Graeme Auchterlonie, John Drennan, Fei Ye, Keisuke Fugane, Takaya Sato
Article
Chemistry, Inorganic & Nuclear
Pavel Svec, Whitney A. Webre, Gary J. Richards, Jan Labuta, Yutaka Wakayama, David Miklik, Paul A. Karr, Toshiyuki Mori, Katsuhiko Ariga, Francis D'Souza, Jonathan P. Hill
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
(2018)
Article
Chemistry, Multidisciplinary
Andrii Rednyk, Toshiyuki Mori, Shunya Yamamoto, Akira Suzuki, Yuta Yamamoto, Takayoshi Tanji, Noriko Isaka, Peter Kus, Shigeharu Ito, Fei Ye
Article
Nanoscience & Nanotechnology
Fei He, Li Mi, Yanfei Shen, Toshiyuki Mori, Songqin Liu, Yuanjian Zhang
ACS APPLIED MATERIALS & INTERFACES
(2018)
Review
Green & Sustainable Science & Technology
Stalin Joseph, Gopalan Saianand, Mercy R. Benzigar, Kavitha Ramadass, Gurwinder Singh, Anantha-Iyengar Gopalan, Jae Hun Yang, Toshiyuki Mori, Ala'a H. Al-Muhtaseb, Jiabao Yi, Ajayan Vinu
Summary: This article summarizes the recent research progress in the design and development of waste-derived advanced functionalized porous carbon materials, as well as discussing the methods and technologies used to synthesize these materials. The article highlights the potential applications of these materials in the fields of environment, energy storage, and conversion applications.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Materials Science, Ceramics
Shipra Chauhan, Toshiyuki Mori, Tomohiro Kobayashi, Shunya Yamamoto, Shigeharu Ito, Graeme Auchterlonie, Roger Wepf, Shigenori Ueda, Fei Ye
Summary: By modifying the defect interface on oxide support using proton beam irradiation, it is possible to fabricate Pt-CeOx nanowire/C with high ORR activity, leading to a reduction in Pt content in the cathode.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
David Miklik, S. Fatemeh Mousavi, Zuzana Buresova, Anna Middleton, Yoshitaka Matsushita, Jan Labuta, Aisha Ahsan, Luiza Buimaga-Iarinca, Paul A. Karr, Filip Bures, Gary J. Richards, Pavel Svec, Toshiyuki Mori, Katsuhiko Ariga, Yutaka Wakayama, Cristian Morari, Francis D'Souza, Thomas A. Jung, Jonathan P. Hill
Summary: This study reports on pyrazinacenes in acenes and azaacenes, comparing their properties/functions at different oxidation states. Experimental and theoretical studies show that these compounds are stable against oxidation but unstable against reduction, providing a rich model case for understanding the properties of a redox-switchable pi-electronic system in solution and at interfaces. Acenes and azaacenes are promising classes of organic materials with distinctive electronic and optical properties.
COMMUNICATIONS CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Toshiyuki Mori, Ke Tong, Shunya Yamamoto, Shipra Chauhan, Tomohiro Kobayashi, Noriko Isaka, Graeme Auchterlonie, Roger Wepf, Akira Suzuki, Shigeharu Ito, Fei Ye
Summary: The use of electron beam irradiation to create a Pt-nanocoated layer on CeOx nanowire improves the performance and stability of fuel cells. The Pt-nanocoated CeOx nanowire cathode maintains a low activation overpotential even after 80 hours of operation.
Article
Chemistry, Multidisciplinary
Santosh K. Singh, Kotaro Takeyasu, Kaito Homma, Shigeharu Ito, Takashi Morinaga, Yuto Endo, Moeko Furukawa, Toshiyuki Mori, Hirohito Ogasawara, Junji Nakamura
Summary: The activity of pyridinic-nitrogen-doped graphene for the oxygen reduction reaction (ORR) decreases under acidic conditions. By increasing proton conductivity in the hydrophobic cavity, the deactivation can be prevented.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Shigeharu Ito, Toshiyuki Mori, Akira Suzuki, Hiroshi Okubo, Shunya Yamamoto, Takaya Sato, Fei Ye
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Xinghua Chen, Fei He, Yanfei Shen, Yiran Yang, Hao Mei, Songqin Liu, Toshiyuki Mori, Yuanjian Zhang
CHEMISTRY-A EUROPEAN JOURNAL
(2017)
Article
Chemistry, Multidisciplinary
Gurudas P. Mane, Siddulu N. Talapaneni, Kripal S. Lakhi, Hamid Ilbeygi, Ugo Ravon, Khalid Al-Bahily, Toshiyuki Mori, Dae-Hwan Park, Ajayan Vinu
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2017)
Article
Materials Science, Multidisciplinary
Siddulu Naidu Talapaneni, Keisuke Fugane, Ajayan Vinu, Toshiyuki Mori
ADVANCED POROUS MATERIALS
(2017)
Article
Chemistry, Multidisciplinary
Zhixin Zhou, Fei He, Yanfei Shen, Xinghua Chen, Yiran Yang, Songqin Liu, Toshiyuki Mori, Yuanjian Zhang
CHEMICAL COMMUNICATIONS
(2017)