Article
Chemistry, Multidisciplinary
Margherita Longoni, Maria Sole Zalaffi, Lavinia de Ferri, Angela Maria Stortini, Giulio Pojana, Paolo Ugo
Summary: The electrochemical preparation of arrays of copper ultramicrowires was revisited to obtain efficient substrates for surface enhanced Raman spectroscopy. Different materials for electrodeposition were compared, and optimal deposition parameters were determined. The CuUW substrates displayed good SERS properties, with higher Raman enhancement achieved when decorated with silver nanostars.
Article
Chemistry, Physical
P. R. Jubu, F. K. Yam, Pannan Kyesmen
Summary: The influence of ZnO layer thickness on Ga2O3/ZnO heterostructured nanocomposites was evaluated, showing that increasing thickness can enhance the concentration of photogenerated electron-hole pairs and improve carrier separation and transportation. This led to an increase in photocurrent density and resulted in different optical and structural properties.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Ying-Jeng James Li, Wen-Chen Chien, Chia-Ju Tang, She-Huang Wu, Yi-Shiuan Wu, Chun-Chen Yang
Summary: In this study, Li-rich Li1.2Ni0.13Mn0.54Co0.13O2 (LMNCO) composite cathode material with hierarchical nano/micro-sphere structures was synthesized through a two-step spray-drying method. Surface modification with polyimide (PI) at different weight ratios improved the electrochemical properties of the LMNCO cathode, leading to enhanced cycle stability and discharge capacity. The PI-coated LMNCO composite cathode materials show potential for use in high-performance lithium-ion batteries.
CERAMICS INTERNATIONAL
(2022)
Article
Engineering, Electrical & Electronic
K. Latha, S. Anbuselvi, P. Periasamy, R. Sudha, D. Velmurugan
Summary: Pure V2O5 and MnO2/V2O5 hybrid nanocomposites were synthesized using a microwave-assisted method for electrochemical supercapacitor application. The nanocomposites showed a mixed state of orthorhombic and orthogonal phase structure, with the addition of MnO2 transforming the shape of V2O5 from nanoplate and small rod-like to nanobeads. Capacitance was significantly enhanced in 3.5 M KOH electrolyte with the addition of 6 wt% MnO2.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
C. Hyun Ryu, Hyein Lee, Heekwon Lee, Hang Ren
Summary: Understanding the role of heterogeneity in electrochemistry is crucial for improving the performance of electrochemical devices. This Perspective discusses the importance of heterogeneity in electrochemical interfaces, explores current methods for revealing heterogeneity, and provides perspectives on utilizing heterogeneity to design more efficient electrochemical devices.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Fuhua Chen, Hao Guo, Lili Zhao, Ying Chu, Xueying Wang, Yongping Zhu
Summary: In this study, WS2 material with good electrical conductivity and high thermal decomposition temperature was successfully prepared and its compatibility with LiBr-LiCl-LiF electrolyte was studied. The assembled single thermal battery showed high discharge specific capacity and low internal resistance under super large pulse current density.
Article
Chemistry, Applied
Rongyu Deng, Fulu Chu, Huanyu Yu, Felix Kwofie, Mingzhi Qian, You Zhou, Feixiang Wu
Summary: This study demonstrates an efficient microwave method for the large-scale production of expanded graphite using anthracite as a precursor. The expanded graphite produced has an ordered graphitic structure and unique porous layered nanosheets morphology.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Biochemical Research Methods
Lais Canniatti Brazaca, Amanda Hikari Imamura, Nathalia Oezau Gomes, Mariana Bortholazzi Almeida, Desiree Tamara Scheidt, Paulo A. Raymundo-Pereira, Osvaldo N. Oliveira Jr, Bruno Campos Janegitz, Sergio Antonio Spinola Machado, Emanuel Carrilho
Summary: This study reports the development of a low-cost immunosensor based on gold-modified screen-printed carbon electrodes for the fast and sensitive determination of S proteins from SARS-CoV and SARS-CoV-2. The immunosensor showed high selectivity, sensitivity, and a low limit of detection, allowing for direct determination of target proteins in saliva samples. The immunoplatform presented in this study has the potential for mass testing in point-of-care settings.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Vyacheslav S. Protsenko, Tetyana E. Butyrina, Lina S. Bobrova, Sergiy A. Korniy, Felix Danilov
Summary: The development of electrochemical energy storage and conversion devices requires low-cost and high-performance electrocatalytic materials. Nickel-based electrodeposited composite coatings show great potential in this regard. Electrodeposited Ni-TiO2 composite coatings using environmentally friendly room-temperature ionic liquids were studied for their corrosion resistance. The inclusion of titania particles in the Ni matrix improved the corrosion resistance of the coatings.
Article
Chemistry, Multidisciplinary
Si-Woo Park, Byungkwon Jang, Han Kim, Jimin Lee, Ji Young Park, Sung-Oong Kang, Yong-Ho Choa
Summary: This study presents a method for producing water-dispersible graphene through in situ sulfate functionalization of graphite under alkaline electrochemical conditions, resulting in graphene with low oxygen content, high crystalline basal planes, and excellent dispersion stability.
FRONTIERS IN CHEMISTRY
(2021)
Article
Electrochemistry
Mengting Liu, Meng Li, Rongfang Wu, Peipei Liu, Cheng Liu
Summary: Thermoelectric (TE) materials, such as organic TE material polypyrrole (PPy), have attracted attention due to their potential as green energy sources. The TE performance of PPy can be improved by integrating it with inorganic TE materials, resulting in a synergistic effect. In this study, PPy/Te composite films were prepared, and their TE properties were investigated. The power factor (PF) of the flexible PPy/Te film was optimized and significantly higher than that of pure PPy. These results demonstrate the promising potential of enhancing the TE performance of conducting polymer-based materials.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Chemistry, Physical
Soonho Kwon, Youn-Geun Kim, Jack H. Baricuatro, William A. Goddard
Summary: The systematic investigation of CO2 reduction on Cu(100) surfaces revealed a dramatic change in step-edge direction upon adsorption and desorption of CO at specific potentials, as observed by operando electrochemical scanning tunneling microscopy.
Article
Chemistry, Multidisciplinary
Hang Zhang, Yugui Zhang, Jian Li, Zhangnan Ma
Summary: This paper investigates the preparation of graphene using coal as a carbon source affected by tectonic stress, and finds that tectonic stress can enhance the crystal structure and electrochemical performance of graphene, making it a better anode material for lithium-ion batteries.
Article
Optics
Luis M. Gonzalez, Moises Cywiak, David Cywiak
Summary: In this paper, we present experiments to study the diffraction of Fresnel diffraction from transmission phase steps under different illuminating sources with distinct spatial profiles. The experimental results are extended analytically and calculations are performed with different illuminating sources to establish general sensitivity formulae within the paraxial region.
Article
Chemistry, Multidisciplinary
Luo Yang, Lingyan Zhang, Xuan Jiao, Yangshuai Qiu, Wenlu Xu
Summary: This study investigated the electrochemical performance of reduced graphene oxides prepared from various natural graphites and found that the reduction modification of graphene oxide was necessary to optimize its electrochemical performance. The reduced graphene oxide exhibited great electrochemical performance with good repair ability, better removal effect of oxygen-containing functional groups, lower structural defects, larger in-plane sp(2) region size, and high specific capacitance.
Review
Chemistry, Analytical
Girija Thesma Chandran, Xiaowei Li, Alana Ogata, Reginald M. Penner
ANALYTICAL CHEMISTRY
(2017)
Article
Chemistry, Physical
Timothy S. Plett, Wenjia Cai, Mya Le Thai, Ivan V. Vlassiouk, Reginald M. Penner, Zuzanna S. Siwy
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Multidisciplinary
Girija Thesma Chandran, Gaurav Jha, Shaopeng Qiao, Mya Le Thai, Rajen Dutta, Alana F. Ogata, Ji-Soo Jang, Il-Doo Kim, Reginald M. Penner
Article
Chemistry, Multidisciplinary
Timothy Plett, Mya Le Thai, Josslyn Cai, Ivan Vlassiouk, Reginald M. Penner, Zuzanna S. Siwy
Article
Chemistry, Physical
Mya Le Thai, Shaopeng Qao, Rajen K. Dutta, Gaurav Jha, Alana F. Ogata, Girija Thesma Chandran, Reginald M. Penner
ACS ENERGY LETTERS
(2017)
Article
Chemistry, Multidisciplinary
Xiaowei Li, Mya Le Thai, Rajen K. Dutta, Shaopeng Qiao, Girija T. Chandran, Reginald M. Penner
Article
Nanoscience & Nanotechnology
Won-Tae Koo, Ji-Soo Jang, Shaopeng Qao, Wontae Hwang, Gaurav Jha, Reginald M. Penner, Il-Doo Kim
ACS APPLIED MATERIALS & INTERFACES
(2018)
Biographical-Item
Chemistry, Multidisciplinary
Wolfgang J. Parak, Warren W. C. Chan, Manish Chhowalla, Omid Farokhzad, Sharon Glotzer, Yury Gogotsi, Paula T. Hammond, Mark C. Hersam, Ali Javey, Cherie R. Kagan, Kazunori Kataoka, Ali Khademhosseini, Nicholas A. Kotov, Shuit-Tong Lee, Young Hee Lee, Yan Li, Jill Millstone, Paul A. A. Mulvaney, Andre E. Nel, Peter J. Nordlander, Reginald M. Penner, Andrey L. Rogach, Raymond E. Schaak, Molly M. Stevens, Andrew T. S. Wee, C. Grant Willson, Paul S. Weiss
Editorial Material
Chemistry, Multidisciplinary
Yury Gogotsi, Reginald M. Penner
Article
Chemistry, Multidisciplinary
Apurva Bhasin, Alana F. Ogata, Jeffrey S. Briggs, Phillip Y. Tam, Ming X. Tan, Gregory A. Weiss, Reginald M. Penner
Article
Nanoscience & Nanotechnology
Ji-Soo Jang, Shaopeng Qiao, Seon-Jin Cho, Gaurav Jha, Alana F. Ogata, Won-Tae Koo, Dong-Ha Kim, Il-Doo Kim, Reginald M. Penner
ACS APPLIED MATERIALS & INTERFACES
(2017)
Review
Chemistry, Multidisciplinary
Reginald M. Penner
ACCOUNTS OF CHEMICAL RESEARCH
(2017)
Article
Chemistry, Multidisciplinary
Won-Tae Koo, Shaopeng Qiao, Alana F. Ogata, Gaurav Jha, Ji-Soo Jang, Vivian T. Chen, Il-Doo Kim, Reginald M. Penner
Article
Chemistry, Multidisciplinary
Beatriz Pelaz, Christoph Alexiou, Ramon A. Alvarez -Puebla, Frauke Alves, Anne M. Andrews, Sumaira Ashraf, Lajos P. Balogh, Laura Ballerini, Alessandra Bestetti, Cornelia Brendel, Susanna Bosi, Monica Carril, Warren C. W. Chan, Chunying Chen, Xiaodong Chen, Xiaoyuan Chen, Zhen Cheng, Daxiang Cui, Jianzhong Du, Christian Dullin, Alberto Escudero, Neus Feliu, Mingyuan Gao, Michael George, Yury Gogotsi, Arnold Grunweller, Zhongwei Gu, Naomi J. Halas, Norbert Hampp, Roland K. Hartmann, Mark C. Hersam, Patrick Hunziker, Ji Jian, Xingyu Jiang, Philipp Jungebluth, Pranav Kadhiresan, Kazunori Kataoka, Ali Khademhosseini, Jindirich Kopecek, Nicholas A. Kotov, Harald F. Krug, Dong Soo Lee, Claus-Michael Lehr, Kam W. Leong, Xing-Jie Liang, Mei Ling Lim, Luis M. Liz-Marzan, Xiaowei Ma, Paolo Macchiarini, Huan Meng, Helmuth Mohwald, Paul Mulvaney, Andre E. Nel, Shuming Nie, Peter Nordlander, Teruo Okano, Jose Oliveira, Tai Hyun Park, Reginald M. Penner, Maurizio Prato, Victor Puntes, Vincent M. Rotello, Amila Samarakoon, Raymond E. Schaak, Youqing Shen, Sebastian Sjoqvist, Andre G. Skirtach, Mahmoud G. Soliman, Molly M. Stevens, Hsing-Wen Sung, Ben Zhong Tang, Rainer Tietze, Buddhisha N. Udugama, J. Scott VanEpps, Tanja Weil, Paul S. Weiss, Itamar Willner, Yuzhou Wu, Lily Yang, Zhao Yue, Qian Zhang, Qiang Zhang, Xian-En Zhang, Yuliang Zhao, Xin Zhou, Wolfgang J. Parak
Article
Chemistry, Analytical
Alana F. Ogata, Joshua M. Edgar, Sudipta Majumdar, Jeffrey S. Briggs, Shae V. Patterson, Ming X. Tan, Stephan T. Kudlacek, Christine A. Schneider, Gregory A. Weiss, Reginald M. Penner
ANALYTICAL CHEMISTRY
(2017)