Article
Chemistry, Applied
Wirya Sarwana, Akira Yamamoto, Hisao Yoshida
Summary: Photocatalytic steam reforming of methane (PSRM) using potassium hexatitanate (K2Ti6O13, KTO) fine crystals as photocatalysts loaded with Rh cocatalyst was studied. It was found that a Rh/KTO fine crystal photocatalyst with a larger surface area exhibited the highest hydrogen production rate (up to 30 mu mol h-1) with high selectivity. Granulated crystals showed 2.1-2.6 times higher hydrogen production rate compared to the original powdery fine crystals, indicating the importance of physical contact between crystals for enhanced photocatalytic activity.
Article
Chemistry, Inorganic & Nuclear
Zi Chen, Chenghong Xu, Guang Hu, Lijing Zhang, YanFang Liu, Xinxin Zhang, Shupeng Wu, Weiwei Hu, Zuocheng Wang, Yuezhou Wei
Summary: Titanate is used as a highly selective inorganic adsorbent for removing Sr-90, and the K2Ti6O13/SiO2 adsorbent is prepared using a sol-gel method. The optimized annealing temperature results in a well-crystallized structure of the K2Ti6O13/SiO2 phase, which exhibits high adsorb-ability and selectivity for metal ions at neutral pH.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Applied
Hiroki Yasumura, Akira Yamamoto, Hisao Yoshida
Summary: The properties of potassium hexatitanate (K2Ti6O13, KTO) photocatalyst and the deposited Ag cocatalyst have an influence on the photocatalytic reduction of carbon dioxide to carbon monoxide. The calcination temperature and crystallite size of the KTO sample are positively correlated with the photocatalytic activity. The state of the Ag cocatalyst is also influenced by the calcination temperature, thus affecting the properties of the catalyst. Therefore, the photocatalytic activity is determined by both the properties of the KTO sample and the deposited Ag cocatalyst.
Article
Engineering, Electrical & Electronic
Xun Wang, Tong Huang, Jian Yi, Liangliang Huang, Chang Liu
Summary: A new one-step synthesis approach for potassium hexatitanate whiskers was proposed in this study, significantly reducing the production cost and expanding its applications. The thermodynamic calculations confirmed the higher reactivity of this approach compared to conventional methods. The necessary environment provided by the melting of K2Ti2O5 was identified as the key factor for crystal growth of K2Ti6O13 nanoparticles.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Hee Jae Kim, Jae Hyeon Jo, Ji Ung Choi, Natalia Voronina, Docheon Ahn, Tae-Yeol Jeon, Hitoshi Yashiro, Yauhen Aniskevich, Genady Ragoisha, Eugene Streltsov, Seung-Taek Myung
Summary: Carbon-modified Li4Ti5O12 spinel successfully stores potassium and exhibits excellent electrode performance, including high initial charge capacity, cycling stability, and high-rate capability.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Lanfang Que, Jihuai Wu, Zhang Lan, Yiming Xie, Fuda Yu, Zhenbo Wang, Jiashen Meng, Xingcai Zhang
Summary: The study focuses on addressing the restricted battery performance at subzero temperatures by constructing potassium-based dual-ion batteries using polytriphenylamine cathode and hydrogen titanate anode. The elimination of the desolvation process in the anode and cathode promotes interfacial kinetics and enhances the rate performance and cycle durability of the batteries.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yun-Hai Zhu, Jia-Zhi Wang, Qi Zhang, Yang-Feng Cui, Gang Huang, Jun-Min Yan, Xin-Bo Zhang
Summary: In this study, a new host design strategy is proposed by combining crystal engineering with interface engineering to counter the mismatched relationship between large potassium ions and compact host structures in potassium-ion batteries. The designed host structure exhibits high reversible capacity, excellent rate capability, and remarkable lifespan, demonstrating the great potential of this material for practical applications.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Engineering, Environmental
Rupam Sinha, Nirmal Roy, Tapas K. Mandal
Summary: This work reports the fabrication of an optically responsive hybrid supercapacitor and explores its optical properties. The areal capacitance of the supercapacitor is enhanced under UV light, and photo-charging and galvanostatic discharging behaviors are examined. The capacitance contributions of electric double layer capacitance (EDLC) and pseudocapacitance are calculated, and the diffusion behavior of electrolytic ions in the electrode material is analyzed.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Haoxiang Lin, Yuanji Wu, Hongyan Li
Summary: This study achieved significant improvement in the performance of layered potassium vanadate by intercalating magnesium ions, which enhances the electrochemical reaction kinetics and structural stability. The reversible capacity of KVO exceeded 60 mAh/g at 10 mA/g, with 91.5% capacity retention over 1000 cycles at 1000 mA/g. The full cell assembled with Mg-KVO and multi-porous hard carbon demonstrated a reversible capacity of 40.6 mAh/g after 100 cycles at 50 mA/g, with 93% capacity retention. This research provides practical insights for enhancing the electrochemical performance of potassium-ion batteries.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Xin Cao, Yuying You, Dawei Sha, Huan Xia, Hang Wang, Jing Zhang, Rongxiang Hu, Yicheng Wei, Zhuoheng Bao, Yang Xu, Long Pan, Chengjie Lu, Wei He, Min Zhou, ZhengMing Sun
Summary: Conventional strategies mainly focus on conversion/alloying processes, and the intercalation process is rarely analyzed. In this study, the intercalation process is correlated with conversion/alloying processes by ion dispersion states. A BiOCl/Ti3C2Tx MXene van der Waals heterostructure is selected as the proof-of-concept system. The multifunctional MXenes not only contribute to atomic dispersion and boosted ion diffusion but also serve as supporting frameworks for long-term structural stability. As a result, a cell with BiOCl/MXene anode delivers an ultralong cycle-life of running over ten months, maintaining a high capacity and retention rate.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Multidisciplinary
Shude Liu, Ling Kang, Seong Chan Jun
Summary: With increasing demand for grid-scale energy storage, potassium-ion batteries (PIBs) have emerged as promising complements or alternatives to commercial lithium-ion batteries. However, the low energy density and unstable cycle life of cathode materials are current challenges that need to be addressed in the development of next-generation PIBs.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Junhua Su, Qinbo Ma, Longkun Que, Hunan Jiang, Xiaoling Xu, Yong Wang, Yifan Guo, Zuowan Zhou
Summary: Magnetic expanded graphite (EG) hybrids were synthesized by co-intercalation polymerization of aniline with transition metal ions, allowing flexible control of metal ion ratios and contents. The synthesized hybrids showed multiband microwave absorption and achieved high reflection values at low loading. This work provides a flexible approach for tuning the components and structures of magnetic EG hybrids, contributing to the development of superior microwave absorption materials.
Article
Engineering, Chemical
Rahat Alam, Muhammad Faheem, Yao He, Xiao Su, Linda Zou
Summary: In this study, the ion selectivity of two ion intercalating electrodes was investigated for capacitive deionization (CDI). The results showed that the ion selectivity was influenced by factors such as the hydrated radius, valence state of the ions, and intrinsic charge of the electrode materials. The electrodes exhibited higher selectivity for ions with smaller hydrated radius and divalent ions due to stronger intrinsic negative charge.
Article
Materials Science, Textiles
Jie Wang, Mengling Wang, Liuxiang Zhan, Ni Wang
Summary: Silica aerogel/potassium hexatitanate whisker composite coated fabric was prepared using polyacrylate coating, improving thermal insulation and providing efficient thermal protection. The thermal insulation property of the coated fabric increased and then decreased with increasing proportion of aerogel particles. The best thermal insulation performance was achieved with a mass ratio of 3:7 for silica aerogel particles to potassium hexatitanate whisker, with a thermal conductivity of 0.232 W/(m dot k). The composite coated fabric exhibited reduced temperature difference and high reflectivity in the near-infrared band.
FIBERS AND POLYMERS
(2023)
Article
Engineering, Environmental
Mohammad R. Thalji, Gomaa A. M. Ali, Porun Liu, Yu Lin Zhong, Kwok Feng Chong
Summary: The W18O49 nanowires-reduced graphene oxide nanocomposite shows high specific capacitance and excellent rate performance in AlCl3 aqueous electrolyte, making it a promising new active material for supercapacitors electrode. It also exhibits high energy density and power density, opening up a new direction for high-performance energy storage in Al3+ electrolyte.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
A. Esmaeili, M. H. Entezari, E. K. Goharshadi
APPLIED SURFACE SCIENCE
(2018)
Article
Materials Science, Multidisciplinary
Zahra Sharifalhoseini, Mohammad H. Entezari, Mohsen Shahidi
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2018)
Article
Acoustics
Zahra Sharifalhoseini, Mohammad H. Entezari, Mohsen Shahidi
ULTRASONICS SONOCHEMISTRY
(2018)
Article
Acoustics
Zahra Sharifalhoseini, Mohammad H. Entezari, Mohsen Shahidi
ULTRASONICS SONOCHEMISTRY
(2018)
Article
Acoustics
Zahra Mohammadi, Mohammad H. Entezari
ULTRASONICS SONOCHEMISTRY
(2018)
Article
Materials Science, Multidisciplinary
Zahra Sharifalhoseini, Mohammad H. Entezari, Mohsen Shahidi
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2018)
Article
Chemistry, Physical
Mahboobeh Zargazi, Mohammad H. Entezari
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2018)
Article
Chemistry, Physical
Mahboobeh Zargazi, Mohammad H. Entezari
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Acoustics
Mahboobeh Zargazi, Mohammad H. Entezari
ULTRASONICS SONOCHEMISTRY
(2019)
Article
Chemistry, Physical
Mahboobeh Zargazi, Mohammad H. Entezari
APPLIED SURFACE SCIENCE
(2019)
Article
Materials Science, Biomaterials
Azadeh Izadi, Azadeh Meshkini, Mohammad H. Entezari
MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2019)
Article
Engineering, Environmental
Mahboobeh Zargazi, Mohammad H. Entezari
JOURNAL OF HAZARDOUS MATERIALS
(2020)
Article
Engineering, Environmental
Toktam Rezayi, Mohammad H. Entezari, Fatemeh Moosavi
CHEMICAL ENGINEERING JOURNAL
(2017)
Article
Chemistry, Physical
S. Sehati, M. H. Entezari
APPLIED SURFACE SCIENCE
(2017)
Article
Chemistry, Multidisciplinary
S. Ramandi, M. H. Entezari, N. Ghows
PHYSICAL CHEMISTRY RESEARCH
(2017)