Article
Chemistry, Physical
Yin-Wei Cheng, Chun-Hung Chen, Shih-An Wang, Yi-Chang Li, Bo-Liang Peng, Jun-Han Huang, Chuan-Pu Liu
Summary: This study investigates the effects of boron and arsenic doping on the performance of silicon thin film anode materials in lithium-ion batteries. The results show that boron and arsenic can respectively deteriorate and enhance the capacity retention and rate capabilities of the pristine materials.
Article
Materials Science, Multidisciplinary
Balaram Paudel Jaisi, Rucheng Zhu, Golap Kalita, Masayoshi Umeno
Summary: The growth of carbon thin films on insulating substrates with nitrogen doping at various temperatures was investigated using microwave-excited surface wave plasma chemical vapor deposition technique. Partially graphitized carbon thin films were obtained at a low temperature of 150 degrees C on quartz substrates. The addition of nitrogen reduced the granular morphology and formed planar structures, revealing the significance of nitrogen incorporation in controlling the morphology of carbon films.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Xin He, Zhihao Liu, Gengzhe Shen, Xiang He, Jionghong Liang, Yu Zhong, Tianlong Liang, Jie He, Yue Xin, Chi Zhang, Dongdong Ye, Guofa Cai
Summary: The pressure sensor developed based on MXene/Ag NWs composite electrodes and micro-structured dielectric layer shows high sensitivity, fast response, wide detection range, and long-term stability. It is capable of detecting various human activities and has promising application prospects in wearable and flexible electronic devices.
NPJ FLEXIBLE ELECTRONICS
(2021)
Article
Chemistry, Physical
Zhichun Liu, Junsheng Liang, Hao Zhou, Hongyi Sun, Wenqi Lu, Biling Wang, Qiang Li, Xin Zhao, Dazhi Wang, Jun Xu
Summary: In this study, various ITO thin films were deposited using RF magnetron sputtering with different nitrogen partial pressures. It was found that the nitrogen partial pressure significantly affected the properties of the films. The 20% N-2 ITO thin film exhibited the best chemical stability and resistance drift rate among all the tested films.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Handong Zhang, Yanlin Zhu, Yanyan Sun, Javid Khan, Heng Liu, Jiamin Xiao, Han Zhou, Lei Han
Summary: The influence of oxygen adsorption ability on the photocatalytic H2O2 production is investigated in this study. Porous graphite carbon nitride with sulfur doping and nitrogen vacancies is synthesized, which improves the oxygen adsorption ability and leads to an increased H2O2 yield.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Analytical
P. K. Shihabudeen, Mina Yaghoobi Notash, Jaber Jahanbin Sardroodi, Ayan Roy Chaudhuri
Summary: We report the improvement of ethanol sensing characteristics of zinc oxide (ZnO) thin films by nitrogen doping. The nitrogen-doped ZnO sensor exhibits lower operating temperature, faster response time, long-term stability, improved resilience against humidity, and selectivity towards ethanol. Density functional theory calculations support the experimental observations by estimating the adsorption energies of ethanol on ZnO and nitrogen-doped ZnO surfaces. The enhanced ethanol sensing of nitrogen-doped ZnO is attributed to the facile adsorption of ethanol molecules on the modified oxide surface.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Engineering, Environmental
Zijun Tan, Xin Qin, Peike Cao, Shuo Chen, Hongtao Yu, Yan Su, Xie Quan
Summary: By enhancing the adsorption of H2O2 on a nitrogen-doped porous carbon (NPC) catalyst, highly active &•OH is generated for the electrochemical-activation of H2O2. The study provides new insight into the fabrication of efficient carbonaceous catalysts for the degradation of refractory organic pollutants.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Shichao Tian, Xihui Zhang, Zhenghua Zhang
Summary: This study successfully synthesized MoS2/NOMC composite with enhanced performance, showing efficient desalination performance driven mainly by the capacitor-controlled process and exhibiting excellent regeneration capability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Inorganic & Nuclear
Manasa Sunku, Ravi Gundeboina, C. H. Shilpa Chakra, Vimala Kaniki Reddy, M. Vithal
Summary: This study presents a reliable design of a nitrogen and carbon doped CoSb2O6 photocatalyst for the efficient degradation of dye-contaminated water, showing remarkable photodegradation activities of up to 99% in 120 mins under visible light irradiation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Engineering, Electrical & Electronic
Jingjing Yan, Congxiu Guo, Xiangyun Guo, Xili Tong
Summary: In this study, nitrogen-doped mesoporous network-like carbon materials (NMNCs) were obtained using glucose and ammonia as carbon and nitrogen sources, respectively, through a simple hydrothermal and calcination coupling method. NMNC-1000, produced by heat treatment in ammonia atmosphere at 1000 degrees C for 3 h, exhibited an extremely high nitrogen-doped specific surface area and optimal mesoporous structure, resulting in superior electrochemical supercapacitive properties.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Review
Chemistry, Physical
Marco Mazzucato, Christian Durante
Summary: This article discusses the key reaction mechanism and catalyst customization in hydrogen peroxide synthesis, with a particular focus on the 2e-ORR reaction. The article highlights different strategies to improve catalyst activity and selectivity, and explores challenges in ink and electrode preparation.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Chemistry, Analytical
Andrea Gonzalez-Lopez, Maria Dolores Cima-Cabal, Pablo Rioboo-Legaspi, Estefania Costa-Rama, Maria del Mar Garcia-Suarez, M. Teresa Fernandez-Abedul
Summary: A highly sensitive electrochemical methodology was developed to detect the end-point of loop-mediated isothermal nucleic acid amplification reactions. The methodology utilizes the oxidation process of phenol red as a visual indicator and quantifies the pH changes during amplification. The change in oxidation potential of phenol red serves as a novel analytical signal correlating with the number of initial DNA copies. In the proof-of-concept study, amplification of the pneumolysin gene from Streptococcus pneumoniae was successfully achieved. The combination of isothermal amplification with electrochemical detection on small flexible electrodes allows for easy decentralization and could be adapted for the detection of other pathogens causing infectious diseases, which is of great importance in preventing future epidemics.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Hari Krishna Sadhanala, Saurav Aryal, Kusha Sharma, Ziv Orpaz, Shulamit Michaeli, Aharon Gedanken
Summary: In this study, photoluminescent N-doped carbon dots were synthesized and used for the selective detection and imaging of intracellular magnesium ions. This is the first report of using carbon dots for sensing and imaging of magnesium ions in cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Energy & Fuels
Peng Wang, Zinan Wang, Ximin Zhang, Yongli Liao, Wei Duan, Ying Yue, Yuning Zhang
Summary: A new kind of stretchable superhydrophobic supercapacitor was proposed using a freeze-thaw treatment method. The supercapacitor has excellent flexibility, self-healing, and self-cleaning properties. It can maintain superhydrophobic and good energy storage performance even after being stretched, abraded, and cut multiple times.
Article
Environmental Sciences
Sarikokba, Lalhmunsiama, Ricky Lalawmpuia, Diwakar Tiwari, Dong-Jin Kim
Summary: Composite material was synthesized for the efficient and stable detection of triclosan in water. The performance of the composite electrode was evaluated using cyclic voltammetry and electrochemical impedance spectroscopy. Triclosan could be detected at low levels with high percentage recovery in real groundwater and river water samples using the developed electrode.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Chemistry, Analytical
Shunsuke Shiba, Rina Maruyama, Tomoyuki Kamata, Dai Kato, Osamu Niwa
Article
Chemistry, Analytical
Sima Chaudhari, Tomoyuki Kamata, Naoshi Kojima, Michinori Sumimoto, Kapaettu Satyamoorthy, Ryoji Kurita, Dai Kato
SENSORS AND ACTUATORS B-CHEMICAL
(2020)
Article
Chemistry, Analytical
Hinako Hashimoto, Kyosei Goto, Kouhei Sakata, Satoshi Watanabe, Tomoyuki Kamata, Dai Kato, Osamu Niwa, Eisuke Kuraya, Taisei Nishimi, Mitsunobu Takemoto, Masashi Kunitake
ANALYTICAL CHEMISTRY
(2020)
Article
Chemistry, Analytical
Dai Kato, Tomoyuki Kamata, Michinori Sumimoto
Summary: By studying nanocarbon film electrodes, we successfully detected tryptophan metabolites, particularly kynurenic acid (KYNA), due to the superior electrode properties and unique structure of the nanocarbon film. The sp(2)/sp(3) ratio of the nanocarbon film plays a crucial role in electrode activity, potential window, and electrode performance, with nanocarbon films containing high sp(3) content exhibiting better performance and theoretical oxidation potential values matching experimental results.
Article
Chemistry, Analytical
Dai Kato, Johtaro Yamamoto, Yoshio Suzuki, Tomoyuki Kamata, Hinako Hashimoto, Masashi Kunitake
Summary: The study investigated the diffusion properties of lipophilic vitamin E through bicontinuous microemulsions (BME) using electrochemical and fluorescence correlation spectroscopy (FCS) measurements. Results showed that a higher VE diffusion coefficient and faster diffusion were observed in the oil-rich BME, indicating superior electrochemical measurements can be achieved by controlling the conditions of the BME as the measurement electrolyte.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Shunsuke Shiba, Ayaka Koike, Shota Takahashi, Dai Kato, Tomoyuki Kamata, Osamu Niwa
Summary: A method for the synthesis of highly oriented metallic heterodimer arrays on a metal nanoparticle-embedded carbon film using a selective electrodeposition technique is proposed. This method does not require the use of surfactants, capping agents, organic solvents, or heat treatment. Selective electrodeposition is achieved by utilizing the difference in electrodeposition overpotentials between carbon and Pd nanoparticle surfaces.
Article
Electrochemistry
Shunsuke Shiba, Soichiro Yoshimoto, Shunta Hashiguchi, Masashi Kunitake, Dai Kato, Osamu Niwa, Masanobu Matsuguchi
Summary: This study reports a method of preparing porous gold nanomesh film through gold electrodeposition in a bicontinuous microemulsion. Toluene selectively adsorbs on the Au surface, inducing anisotropic 2D growth of gold, and the nanochannels in the microemulsion form abundant in-plane nanopores.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Kodai Nakao, Koji Noda, Hinako Hashimoto, Mayuki Nakagawa, Taisei Nishimi, Akihiro Ohira, Yukari Sato, Dai Kato, Tomoyuki Kamata, Osamu Niwa, Masashi Kunitake
Summary: Bicontinuous microemulsions (BMEs) have been investigated as unique heterogeneous mixtures for electrochemistry. A three-dimensionally expanded ITIES-BME system was successfully constructed, and electrochemical reactions were observed to occur in both immiscible solution phases. This research opens up possibilities for applications such as electrolysis synthesis and secondary batteries.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Shunsuke Shiba, Saki Ohta, Kazuya Ohtani, Shota Takahashi, Dai Kato, Osamu Niwa
Summary: The supporting effect of N-doped carbon film improved the crystallinity of electrodeposited Ni@Ni(OH)(2) core-shell nanoparticles, leading to a higher regeneration rate of catalytic sites and oxidation currents of sugars, as well as a significant decrease in overpotential for the G5 oxidation reaction, possibly due to electrostatic interaction between NPs and G5.
Article
Nanoscience & Nanotechnology
Shunsuke Shiba, Shoei Hirabayashi, Osamu Niwa, Dai Kato, Masashi Kunitake, Masanobu Matsuguchi
ACS APPLIED NANO MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Tomoyuki Kamata, Michinori Sumimoto, Shunsuke Shiba, Ryoji Kurita, Osamu Niwa, Dai Kato
Article
Chemistry, Multidisciplinary
Tomoyuki Kamata, Dai Kato, Osamu Niwa
Article
Nanoscience & Nanotechnology
Dai Kato, Yoshio Suzuki, Kyoko Yoshioka, Tomoyuki Kamata, Masami Todokoro, Osamu Niwa
ACS APPLIED NANO MATERIALS
(2018)
Article
Chemistry, Analytical
Ryoji Kurita, Hiroyuki Yanagisawa, Tomoyuki Kamata, Dai Kato, Osamu Niwa
ANALYTICAL CHEMISTRY
(2017)
Article
Chemistry, Analytical
Dai Kato, Tomoyuki Kamata, Ryoji Kurita, Kyoko Yoshioka, Shunsuke Shiba, Eisuke Kuraya, Masashi Kunitake, Osamu Niwa