Article
Chemistry, Analytical
Pengfei Hu, Jingtao Chen, Qianru Ma, Jiaqi Yin, Dong Zhou, Chunhe Kou, Jing Xu, Jiaqiang Xu
Summary: WO3-based composites containing ZnWO4/WO3 heterojunctions were synthesized through a one-step thermal compensation decomposition process. The thermal compensation agent played a crucial role in enhancing the thermal decomposition efficiency, particle size, and particle dispersion regulation. This process allowed for the mass production of spherical WO3 nanoparticles with remarkable short-range electron transport ability, without the need for complicated synthesis procedures. The core-shell-shaped and mulberry-type nanostructures were the predominant morphologies obtained. These nanostructures exhibited excellent gas sensitivity to H2S, along with high selectivity and cycle stability, particularly with a low detection limit as low as 0.0783 ppm. A gas-sensing mechanism involving the synergistic effects of multiple structural factors was proposed, including the temperature-dependent vacancy oxygen, spherical nanostructures facilitating short electron migration distances, and heterojunctions promoting electron migration. The in situ prepared ZnWO4/WO3-heterojunction-based nanostructures through thermal decomposition hold promise for the detection of trace H2S.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Physical
Matawee Punginsang, Dario Zappa, Elisabetta Comini, Anurat Wisitsoraat, Giorgio Sberveglieri, Andrea Ponzoni, Chaikarn Liewhiran
Summary: In this study, sensors based on WO3 nanowires sensing films were fabricated by thermal oxidation method on alumina substrates and functionalized with gold nanoparticles by RF magnetron sputtering. An optimal sputtering time of 10 seconds led to significantly enhanced sensing performances towards H2S, with a detection limit of 0.17 ppb for 5 ppm at 350 degrees C and 50% relative humidity.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Xiaoyong Wang, Kui Chen, Pengsen Wu, Bin Wu, Guohua Du
Summary: Thermal phase transformation and crystal growth were studied during the calcination of titanyl sulfate with the addition of B2O3, K2O, and Li2O. The structure and morphology of TiO2 product were analyzed using XRD, SEM, TEM, and size analyzer. The study found that the dopant ions had a significant impact on the growth rate of different crystal planes, resulting in changes in particle shape and crystal structure. The doping of K2O inhibited crystal form transformation and particle sintering, while Li2O had a weak effect on crystal phase transformation.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Nurshahzanani Shahrir, Siti Nurul'ain Yusop, Nornizar Anuar, Hamizah Mohd Zaki, Yoichi Tominaga
Summary: This work investigates the impact of solvents on the morphology of urea crystals through experimental and molecular modeling approaches. The research finds that the aspect ratios of urea crystals grown in different polar protic solvents vary significantly. The study attempts to establish a correlation between various factors and crystal morphology but finds that these factors cannot accurately predict the aspect ratios of the crystals.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Veselina Marinova, Geoffrey P. F. Wood, Ivan Marziano, Matteo Salvalaglio
Summary: Surface defects play a crucial role in crystal growth. In this study, molecular simulations are used to investigate the impact of solvents on the roughening of crystal faces in racemic ibuprofen. A computational strategy is developed to evaluate the energy cost of surface vacancy formation in different solvents. The results show that the mechanism and energy of defect formation depend on both the solvent and crystal face. This methodology provides a way to capture solvent effects at the atomistic level for high-throughput screening of crystallization solvents.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Physical
Runce Rong, Limin Wang
Summary: In this study, novel hierarchical hollow nest-like WO3 micro/nanostructures were successfully synthesized using a facile hydrothermal method. The nanostructures were characterized and found to exhibit excellent photocatalytic activity towards tetracycline in water, as well as good stability and reusability under visible light. This research provides a reliable strategy for the simple and controllable preparation of hollow photocatalysts for wastewater treatment applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Xiaowei Cheng, Xin Huang, Zhixin Zheng, Yuyuan Dong, Ting Wang, Hongxun Hao
Summary: This study systematically investigated crystal growth of cefradine in aqueous solution through experimental methods and molecular dynamics simulations. The results showed that water molecules preferred to be adsorbed onto the (1 0 1) crystal face due to favored hydrophilicity and solvent adsorption sites, and the stronger interaction between water molecules and the (1 0 1) crystal face hindered crystal growth along the radial direction.
CRYSTAL GROWTH & DESIGN
(2021)
Article
Engineering, Electrical & Electronic
Jing Wang, Shuaikang Xu, Pengcheng Sun, Haiying Du, Liding Wang
Summary: This study proposes an effective method to improve the detection sensitivity of screen-printed carbon electrodes (SPCE) by radio frequency plasma-assisted polypyrrole (PPy) modification. The modification increases both the reaction area and surface oxygen content of the SPCE, leading to significant enhancement of detection sensitivity. The modified SPCEs exhibit excellent repeatability, uniformity, and long-term stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Maciej Fronczak, Anna Maria Keszler, Miklos Mohai, Balint Jezso, Attila Farkas, Zoltan Karoly
Summary: The aim of this study was to investigate the potential of oxygen-containing organic compounds as precursors for graphene flakes. Plasma processing was used to treat nine different compounds, and the impact of various operating parameters on product formation rate and yield was thoroughly examined. The morphology, graphitization, thermal stability, and chemical composition of the obtained materials were analyzed. It was found that five compounds were suitable for continuous synthesis of graphene flakes, while one compound resulted in a mixture of graphene flakes and byproducts.
Article
Chemistry, Multidisciplinary
Navpreet Kaur, Dario Zappa, Valentin-Adrian Maraloiu, Elisabetta Comini
Summary: Establishing a platform with different nanostructured oxides is a novel idea for developing highly sensitive and selective sensing devices. The study successfully created 3D-heterostructures consisting of 1D nanowires of NiO and WO3, exhibiting selective behavior towards different gases. The improved sensing performance of the heterostructures is attributed to charge carrier transport through specific interfaces and modulation of charge carriers in the electron depletion layer of WO3 and hole accumulation layer of NiO and NiWO4.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Engineering, Environmental
Shijie Li, Xin Yu, Xiaoqing Dang, Xiangkang Meng, Yufei Zhang, Caihong Qin
Summary: The study demonstrated that the combination of NTP with MOx/γ-Al2O3 catalysts significantly enhanced the removal efficiency and Cl selectivity of chlorinated volatile organic compounds. This innovative technique also reduced the production of toxic byproducts and improved the energy yield of the process.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Jing Shang, Magesh Murugesan, Samuel Bigbee-Hansen, Santosh K. Swain, Joel N. Duenow, Steve Johnston, Scott P. Beckman, Harvey H. Walker, Raine W. Antonio, John S. McCloy
Summary: We report the properties of highly conducting n-type cadmium telluride single crystals doped with iodine (CdTe: I). The crystals were grown using the Modified Vertical Bridgman (MVB) melt growth method with dopant concentrations ranging from 1017 cm-3 to 1019 cm-3. Post-growth dopant activation techniques, including Cd annealing, Te annealing, and rapid thermal annealing (RTA), were applied to improve the free carrier density. The structural, optical, and electrical properties were analyzed using various techniques. The results show that Cd annealing is the most effective activation method, resulting in the highest donor activation, lowest resistivity, and highest mobility. The study also suggests the potential role of Cd vacancy-related defects in electrical self-compensation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Hee Il Yoo, Rodolphe Mauchauffe, Se Youn Moon
Summary: During the synthesis of zinc oxide (ZnO) nanoparticles and nano-structures using an RF inductively-coupled thermal plasma system, it was found that ZnO nanoparticles synthesized in high enthalpy plasmas exhibit high purity and extremely small crystalline characteristics, with a size distribution suitable for various applications. The morphology of the ZnO nanoparticles was found to be influenced by process parameters such as chamber pressure, cooling method, and reactor configuration. Additionally, flower-like ZnO nano-structures consisting of hexagonal nano-rods with six facets were obtained by controlling operational parameters, showing good optical properties in photoluminescence analysis.
CURRENT APPLIED PHYSICS
(2021)
Article
Crystallography
Freshsya Zata Lini, Dhanang Edy Pratama, Tu Lee
Summary: The study analyzed the nucleation and crystal growth kinetics of 2:1 HBz-NaBz co-crystals with or without templates by monitoring the concentration of the mother liquor. The results showed that adding dissolved templating molecules could reduce the critical free energy barrier of nucleation for the co-crystals, while the crystal growth rate was not significantly affected. Additionally, the type of templating molecule used influenced both the critical free energy barrier of nucleation and the order of crystal growth rate.
Article
Optics
Jing Xu, Jianzhao Liu, Li Yang, Junqing Liu, Yang Yang
Summary: Silicon-based Yb-doped Y3Al5O12 garnet nanofilms were fabricated using atomic layer deposition, exhibiting a polycrystalline structure after annealing at 1150 degrees C. Yb3+ luminescence was identified at 1030 nm and 970 nm under electrical injection, with an external quantum efficiency of 0.65% and a fluorescence lifetime of 80-200 µs. The manipulation of multi-oxide nanofilms with designed composition and crystallinity revealed the potential for developing Si-based optoelectronic devices from crystalline garnet films.
Article
Chemistry, Inorganic & Nuclear
MinLan Cai, Guan-E Wang, MingShui Yao, GuoDong Wu, Ying Li, Gang Xu
INORGANIC CHEMISTRY COMMUNICATIONS
(2018)
Article
Chemistry, Multidisciplinary
Si-Yan Peng, Liu-Sai Yang, Ming-Shui Yao, Le-Shu Yu
NEW JOURNAL OF CHEMISTRY
(2018)
Article
Chemistry, Multidisciplinary
Ming-Shui Yao, Jing-Wei Xiu, Qing-Qing Huang, Wen-Hua Li, Wei-Wei Wu, Ai-Qian Wu, Lin-An Cao, Wei-Hua Deng, Guan-E Wang, Gang Xu
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2019)
Article
Chemistry, Multidisciplinary
Ming-Shui Yao, Jia-Jia Zheng, Ai-Qian Wu, Gang Xu, Sanjog S. Nagarkar, Gen Zhang, Masahiko Tsujimoto, Shigeyoshi Sakaki, Satoshi Horike, Kenichi Otake, Susumu Kitagawa
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2020)
Review
Chemistry, Physical
Huanhuan Zhang, Cheng Gu, Ming-Shui Yao, Susumu Kitagawa
Summary: Metal-organic frameworks (MOFs) and covalent organic frameworks (COFs) are crucial components in crystalline porous materials, offering vast structural diversity and adjustability. By hybridizing MOFs or COFs with other materials, issues like poor conductivity and weak mechanical properties can be effectively addressed. Various hybridization techniques at different scales have been developed for the preparation of MOF and COF hybrids, with representative applications in electrochemical energy storage devices. The basic principles and mechanisms guiding hybridization have also been elucidated.
ADVANCED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Ping Wang, Takashi Kajiwara, Ken-ichi Otake, Ming-Shui Yao, Hirotaka Ashitani, Yoshiki Kubota, Susumu Kitagawa
Summary: The study utilized the isomer-specific structural transformation of a soft porous coordination polymer (PCP) to achieve ortho-xylene (oX) recognition and separation, with the PCP's flexible structure and flexible aromatic pendant groups playing key roles. The PCP demonstrated xylene-selective properties through guest-triggered breathing-type structural changes and rearrangement of intraframework pi-pi interaction, allowing for selective adsorption and separation of oX from isomer mixtures.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Hui-Zi Li, Qiao-Hong Li, Mingshui Yao, Yu-Peng Han, Ken-ichi Otake, Susumu Kitagawa, Fei Wang, Jian Zhang
Summary: This study reports the unique flexibility of metal-organic framework Zn(int)(Ad) (TIF-A1) induced by acetylene adsorption, characterized by single-crystal X-ray diffraction and molecular modeling. The findings reveal that the flexibility of TIF-A1 originates from the strong interaction between acetylene and the framework, which results in the rotation of the int ligand and expansion of the framework simultaneously. This work provides insights into the flexibility of MOFs and guides the exploration of new flexible MOFs in the future.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Ziqian Xue, Jia-Jia Zheng, Yusuke Nishiyama, Ming-Shui Yao, Yoshitaka Aoyama, Zeyu Fan, Ping Wang, Takashi Kajiwara, Yoshiki Kubota, Satoshi Horike, Ken-ichi Otake, Susumu Kitagawa
Summary: By manipulating the coordination geometries of metal centers, new porous coordination polymers (PCPs) with tunable structure and conductivity have been successfully achieved. These PCPs exhibit varying pore structures and conductivities, enabling modulated selectivity and sensitivity in gas sensing.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Ming-Shui Yao, Ken-ichi Otake, Jiajia Zheng, Masahiko Tsujimoto, Yi-Fan Gu, Lu Zheng, Ping Wang, Shivanna Mohana, Mickaele Bonneau, Tomoyuki Koganezawa, Tetsuo Honma, Hirotaka Ashitani, Shogo Kawaguchi, Yoshiki Kubota, Susumu Kitagawa
Summary: A method of integrating the soft porosity and electrical properties of metal-organic frameworks (MOFs) into a single material is achieved through the design of conductive-on-insulating MOF (cMOF-on-iMOF) heterostructures. The cMOF-on-iMOF heterostructures exhibit enhanced selective sorption of CO2 and flexibility in sensing and electrical shape memory. These properties are attributed to the porous interface formed by the hybridization of both frameworks at the molecular level, as observed through operando synchrotron grazing incidence wide-angle X-ray scattering measurements.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Zaoming Wang, Aydin Ozcan, Gavin. A. Craig, Frederik Haase, Takuma Aoyama, Daria Poloneeva, Keiji Horio, Masakazu Higuchi, Ming-Shui Yao, Cara. M. Doherty, Guillaume Maurin, Kenji Urayama, Anastasiya Bavykina, Satoshi Horike, Jorge Gascon, Rocio Semino, Shuhei Furukawa
Summary: A new concept of pore-networked gels is demonstrated by trapping the solvent phase with molecular networks to achieve accessible microporosity. These gels show enhanced CO2 capacities and improved mechanical properties and low volatility, making them potentially useful in gas adsorption and separation.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Renjun Zhang, Zhizhen Lai, Hongtao Tian, Meng Wang, Yang-Yang Guo, Mo Zhang, Jiang Zhou, Ming-Shui Yao, Zhili Li
Summary: Polyurea-magnetic hierarchical porous composites exhibit excellent physisorption performance for anionic metabolites in complex matrices, offering simple preparation, rapid separation, superior stability, and recyclability.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Physical
Meng Tian, Fei Pei, Mingshui Yao, Zhihua Fu, Lele Lin, Guodong Wu, Gang Xu, Hiroshi Kitagawa, Xiaoliang Fang
ENERGY STORAGE MATERIALS
(2019)
Article
Chemistry, Physical
Ming-Shui Yao, Lin-An Cao, Yong-Xiang Tang, Guan-E. Wang, Rui-Heng Liu, P. Naresh Kumar, Guo-Dong Wu, Wei-Hua Deng, Wen-Jing Hong, Gang Xu
JOURNAL OF MATERIALS CHEMISTRY A
(2019)
Article
Chemistry, Multidisciplinary
Ming-Shui Yao, Xiao-Jing Lv, Zhi-Hua Fu, Wen-Hua Li, Wei-Hua Deng, Guo-Dong Wu, Gang Xu
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2017)
Article
Chemistry, Multidisciplinary
Wen-Hua Li, Kui Ding, Han-Rui Tian, Ming-Shui Yao, Bhaskar Nath, Wei-Hua Deng, Yaobing Wang, Gang Xu
ADVANCED FUNCTIONAL MATERIALS
(2017)