Article
Engineering, Chemical
P. Amesh, K. A. Venkatesan, A. S. Suneesh, Uma Maheswari
Summary: The ion exchanger NaFeTiO was synthesized and its behavior towards Cs+ and Sr2+ ion exchange and adsorption were studied. It was found that the selectivity of NaFeTiO for Cs+ or Sr2+ exchange can be adjusted by tuning the Ti/Fe mole ratio, demonstrating its potential application in separating cesium or strontium selectively from alkaline wastes.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Energy & Fuels
Noratiqah Sazelee, Nurul Shafikah Mustafa, Muhammad Syarifuddin Yahya, Mohammad Ismail
Summary: Adding 10wt% spherical SrTiO3 catalyst can decrease the onset desorption temperature and enhance the desorption kinetics of NaAlH4. The decrease in apparent activation energy and improvement in desorption properties of NaAlH4 are attributed to the reduction of the physical structure of NaAlH4 by SrTiO3 during ball milling.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Analytical
Sakshee Chandel, Zulki Fli, Jay Singh, Jaekook Kim, Alok Kumar Rai
Summary: In this study, a nanocomposite of sodium titanate integrated with reduced graphene oxide (Na2Ti6O13/rGO) was fabricated through a solvothermal method and used as an anode material for sodium-ion batteries. The rGO nanosheets act as electrically conductive paths and facilitate the intercalation/de-intercalation of sodium ions, leading to improved electrochemical performances.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Jun Mei, Tiantian Wang, Dongchen Qi, Jianjun Liu, Ting Liao, Yusuke Yamauchi, Ziqi Sun
Summary: This study proposes a novel concept of enhancing the electrochemical performance by opening three-dimensional fast ion transport channels within the NTO frameworks, achieved through a combination of oxygen vacancy generation and cation substitution strategies. The oxygen-deficient and bismuth-substituted HBNTO exhibits significant enhancements in reversible capacity, rate capability, and cycling stability, attributed to the successful opening of 3D internal ion transport channels.
Article
Engineering, Environmental
Qihua Huang, Yonglin Wang, Qing Zhang, Gaoqiang Xiang, Xiaoyan Han, Yingkui Yang
Summary: A polyimide-engineered bulk Na2Ti3O7 (NTO@PI) anode is proposed to enhance its structure and interface stability during cycling. The protective PI layer can prevent self-relaxation of discharged products and promote structural stability. Additionally, the PI layer inhibits side reactions at the NTO/electrolyte interface and prevents erosion of H2O when exposed to air. Moreover, the PI layer facilitates Na-ion transportation into the NTO lattice.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Ceramics
Alireza Ramezani, Hossein Abdizadeh, Mohammad Reza Golobostanfard
Summary: BaTiO3 and SrTiO3 thin films and BaTiO3/SrTiO3 lamellar composites were successfully synthesized using the sol-gel spin-coating method in this study. The morphology and band gap of the composite samples could be altered by changing the periodicity of the samples. The optical properties of the multi-stacked composites, including dielectric constant, dielectric loss, impedance, Urbach tail, extinction coefficient, and electric modulus, were also investigated.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Sakshee Chandel, Zulkifli, Jay Singh, Jaekook Kim, Alok Kumar Rai
Summary: In this study, pure monoclinic Na0.23TiO2 nanoparticles wrapped within a carbon network were successfully synthesized using a polyol-assisted pyro synthesis method for sodium ion battery applications. The synthesis method not only acted as a solvent, low-cost fuel, and reducing agent, but also as a carbon source, leading to the formation of the carbon network. X-ray diffraction and Raman analysis confirmed the presence of pure monoclinic Na0.23TiO2 and carbon in the synthesized sample, respectively. Morphological analysis showed that the Na0.23TiO2 nanoparticles were fully covered by the carbon network. Electrochemical investigations demonstrated that the Na0.23TiO2 nanoparticles wrapped within the full carbon network exhibited excellent cycling stability and rate capability.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Jian Yang, Tianyi Wang, Xin Guo, Xiaoxue Sheng, Jiabao Li, Chengyin Wang, Guoxiu Wang
Summary: This study reports a free-standing and flexible Sb2S3/Ti3C2Tx composite film for high-capacity, fast and stable sodium storage. The hybrid nanostructure of Sb2S3 nanowires anchored between Ti3C2Tx nanosheets enables outstanding rate performance and cyclic stability in the composite anodes. The flexible sodium-ion capacitors using Sb2S3/Ti3C2Tx anodes and active carbon/reduced graphene oxide paper cathodes exhibit superior energy and power densities, as well as excellent cycling performance.
Article
Chemistry, Physical
Xingxu Lu, Fangyuan Liu, Yanliu Dang, Meilin Li, Mingyue Ruan, Mudi Wu, Chunxiang Zhu, Tomoyasu Mani, Steven L. Suib, Pu-Xian Gao
Summary: Defect engineering through elemental doping has been applied to enhance the photocatalytic performance of titanate nanowires (TNWs). In this study, transition-metal (TM) doped TNWs were prepared and demonstrated high efficiency in the degradation of Rhodamine B under UV light. The hierarchical meso-porosity of the nanowires, achieved by ion-exchange with selective ions, facilitated mass transfer while maintaining high surface area and active sites. TM intercalation reduced Ti4+ to Ti3+, narrowed the optical bandgap, and enhanced the adsorption and photocatalytic degradation of RhB. This work provides insights into the effects of transition-metal doping and offers a rational strategy for the development of high-performance titanate-based photocatalysts.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Applied
X. Chen, J. Yvonnet, H. S. Park, S. Yao
Summary: By numerical simulations and topology optimization, it is demonstrated that piezoelectric composites have the potential for significantly large apparent converse flexoelectric properties. Both converse and higher order electromechanical coupling effects contribute strongly to the flexoelectric response and properties of these composites.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Xuemin Liu, Fangong Kong, Zirui Wang, Manman Ren, Congde Qiao, Weiliang Liu, Jinshui Yao, Changbin Zhang, Hui Zhao
Summary: In this study, a strontium titanate (STO) coated separator was prepared to solve the problem of severe dendrite growth of zinc anode in aqueous zinc ion batteries (ZIBs). The modified separator with STO coating exhibited special dielectric properties and well-filled surface pores, which enabled homogenize ion flux and induced uniform deposition of Zn2+. Electrochemical measurements showed that the Zn||Cu asymmetric cell with STO separator cycled stably for 780 cycles with an average Coulombic efficiency of 99.7%. Meanwhile, the Zn||Zn symmetric cell displayed a long cycle life of 1800 hours at a current density of 1 mA cm-2 and an area capacity of 0.5 mAh cm-2. Thus, this study presents a novel approach to improve the deposition behavior of Zn2+ and suppress Zn dendrite growth for achieving stable and long-life ZIBs.
SCRIPTA MATERIALIA
(2023)
Article
Engineering, Environmental
Jaewook Ko, Seongjoon So, Minju Kim, Il Tae Kim, Yong Nam Ahn, Jaehyun Hur
Summary: In this study, a highly polar perovskite SrTiO3 (STO) layer was introduced on the zinc metal to promote Zn2+ migration and suppress random dendrite growth, improving the reversibility of electrochemical reaction. Various electrochemical characterizations demonstrated the uniform and rapid Zn2+ transport via the STO layer, leading to lower overpotential and better stability compared to bare Zn metal. This study provides new insights into the design and development of promising Zn metal anodes for next-generation energy storage systems.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yutaro Yamazaki, Kentaro Kinoshita
Summary: This study develops a memristor that can respond to both electrical and optical stimuli, and demonstrates that the timescale of the transient current response of the device can be controlled by applying a small voltage. The computational performance of the device as a physical reservoir is evaluated in an image classification task, showing the potential for optimizing learning accuracy by tuning the device characteristics.
Article
Chemistry, Physical
Biborka Boga, Norbert Steinfeldt, Nikolaos G. Moustakas, Tim Peppel, Henrik Lund, Jabor Rabeah, Zsolt Pap, Vasile-Mircea Cristea, Jennifer Strunk
Summary: In this study, SrTiO3-SrCO3 composites with different contents of SrCO3 were synthesized and their morphological, structural, and optical properties were investigated. The results showed improved photocatalytic efficiency in the degradation of DCFNa for all the studied composites. The highest mineralization efficiency was obtained for the sample with 21 wt% SrCO3 content. The presence of SrCO3 led to an increased concentration of active species and inhibited the production of CH4 and C2H6 during CO2 photoreduction.
Article
Materials Science, Multidisciplinary
Z. F. Wu, Y. X. Liang, J. J. Tang, Y. F. Wang, S. L. Zhang, Q. N. Meng, Y. Yan, C. Xu, J. Wang, T. D. Shen, Y. Q. Qiao, E. G. Fu
Summary: A novel multicomponent vanadium-based alloy (MVA) was designed and irradiated, showing that the intermetallic TiNi matrix became amorphous while the VCr matrix exhibited high structural stability after ion irradiation. This study provides insights for designing new vanadium alloys with enhanced structural stability under ion irradiation.
MATERIALS & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Yoshifumi Ishikawa, Maiki Takeda, Susumu Tsukimoto, Koji S. Nakayama, Naoki Asao
ADVANCED MATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Jian Zhao, Zhanqiang Xu, Kazuaki Oniwa, Naoki Asao, Yoshinori Yamamoto, Tienan Jin
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2016)
Article
Chemistry, Multidisciplinary
Kazuaki Oniwa, Hiromasa Kikuchi, Hidekazu Shimotani, Susumu Ikeda, Naoki Asao, Yoshinori Yamamoto, Katsumi Tanigaki, Tienan Jin
CHEMICAL COMMUNICATIONS
(2016)
Article
Chemistry, Multidisciplinary
Kazuaki Oniwa, Hiromasa Kikuchi, Thangavel Kanagasekaran, Hidekazu Shimotani, Susumu Ikeda, Naoki Asao, Yoshinori Yamamoto, Katsumi Tanigaki, Tienan Jin
CHEMICAL COMMUNICATIONS
(2016)
Article
Electrochemistry
Jing Xu, Ming Zhao, Shin-ichi Yamaura, Tienan Jin, Naoki Asao
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2016)
Article
Materials Science, Multidisciplinary
Shuai Mu, Kazuaki Oniwa, Tienan Jin, Naoki Asao, Masahiro Yamashita, Shinya Takaishi
ORGANIC ELECTRONICS
(2016)
Article
Chemistry, Physical
Hui Shang, Hidekazu Shimotani, Susumu Ikeda, Thangavel Kanagasekaran, Kazuaki Oniwa, Tienan Jin, Naoki Asao, Yoshinori Yamamoto, Hiroyuki Tamura, Kenta Abe, Miyuki Kanno, Masayuki Yoshizawa, Katsumi Tanigaki
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Physical
David D. E. Brennhaugen, Konstantinos Georgarakis, Yoshihiko Yokoyama, Koji S. Nakayama, Lars Arnberg, Ragnhild E. Aune
JOURNAL OF ALLOYS AND COMPOUNDS
(2018)
Article
Multidisciplinary Sciences
Z. Wang, K. Georgarakis, K. S. Nakayama, Y. Li, A. A. Tsarkov, G. Xie, D. Dudina, D. V. Louzguine-Luzgin, A. R. Yavari
SCIENTIFIC REPORTS
(2016)
Article
Multidisciplinary Sciences
David D. E. Brennhaugen, Konstantinos Georgarakis, Yoshihiko Yokoyama, Koji S. Nakayama, Lars Arnberg, Ragnhild E. Aune
SCIENTIFIC REPORTS
(2018)
Article
Physics, Applied
Junpei T. Okada, Patrick H. -L. Sit, Ryo Ishikawa, Takehiko Ishikawa, Jinfan Chen, Koji S. Nakayama, Kensaku Maeda, Yoshihiko Yokoyama, Yuki Watanabe, Paul-Francois Paradis, Yasuhiro Watanabe, Susumu Nanao, Yuichi Ikuhara, Kaoru Kimura, Satoshi Uda
APPLIED PHYSICS LETTERS
(2020)
Article
Nanoscience & Nanotechnology
Teppei Saito, Norihito Shiraiwa, Yuta Morioka, Kazuto Akagi, Koji S. Nakayama, Tadafumi Adschiri, Naoki Asao
ACS APPLIED NANO MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Teppei Saito, Man Zhang, Rahul D. Kavthe, Kazuto Akagi, Koji S. Nakayama, Tadafumi Adschiri, Naoki Asao
Proceedings Paper
Nanoscience & Nanotechnology
Kyongwan Kim, Koji S. Nakayama, Mitsuo Umetsu, Wonmuk Hwang, Winfried Teizer
2016 IEEE 16TH INTERNATIONAL CONFERENCE ON NANOTECHNOLOGY (IEEE-NANO)
(2016)
