Article
Chemistry, Multidisciplinary
Menggang Li, Zhonglong Zhao, Weiyu Zhang, Mingchuan Luo, Lu Tao, Yingjun Sun, Zhonghong Xia, Yuguang Chao, Kun Yin, Qinghua Zhang, Lin Gu, Weiwei Yang, Yongsheng Yu, Gang Lu, Shaojun Guo
Summary: This study demonstrates a new strategy to fabricate platinum nanowires that effectively eliminate CO poisoning, leading to enhanced methanol oxidation electrocatalysis. The optimized nanowires show high specific and mass activity, as well as improved stability, and also exhibit superior activities towards the electro-oxidation of other alcohols.
ADVANCED MATERIALS
(2021)
Article
Mechanics
Xinlong Lu, Tengfei Nie, Xiaoping Li, Li Jing, Yiming Zhang, Lijing Ma, Dengwei Jing
Summary: This work investigates the dynamic behaviors of oxygen bubbles on vertical platinum sheet electrodes and their dependence on electrolyte pH values. The study finds that the detachment radius of bubbles is affected by both applied voltage and electrolyte pH.
Article
Chemistry, Physical
Thi Chuyen Phan, Van-Toan Nguyen, Ho-Suk Choi, HyunChul Kim
Summary: In this study, a high-performance CuTi@Pt alloy catalyst with a one-dimensional nanotube structure was successfully prepared through a galvanic replacement reaction. The structural and compositional differences were systematically investigated. The optimized CuTi@Pt nanotube catalyst demonstrated significant enhancements in both the activity and durability for the hydrogen evolution reaction.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Minghao Xie, Zhiheng Lyu, Ruhui Chen, Min Shen, Zhenming Cao, Younan Xia
Summary: In this study, Pt-Co@Pt octahedral nanocrystals were successfully synthesized with an intermetallic Pt-Co core and an ultrathin Pt shell dominated by {111} facets on the surface. These nanocrystals showed significantly improved catalytic performance towards the oxygen reduction reaction compared to a commercial Pt/C catalyst, with a mass activity 13.4 times higher and a specific activity 29.5 times higher. Importantly, the mass activity of the nanocrystals only decreased by 21% after 30,000 cycles of accelerated durability testing, indicating their outstanding potential as catalysts for ORR and related reactions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Xibao Yang, Hang Lv, Shuanglong Chen, Qiushi Wang, Linhai Jiang
Summary: Ultrafine Si embedded SiO2 nanowires were prepared by thermal evaporation with Pt catalyst, and grown in-situ on Si substrate, exhibiting a vapor-liquid-solid growth mechanism. The ultrafine Si embedded SiO2 nanowires show a slightly larger absorption edge due to the quantum confinement effect. The photoluminescence results indicate a blue shift in the ultrafine nanowires, which can be attributed to the quantum confinement effect caused by their small size. The Pt-related light emission characteristics will drive the development of nanowires in optoelectronics.
Article
Chemistry, Multidisciplinary
Geun Ho Gu, Juhyung Lim, Chengzhang Wan, Tao Cheng, Heting Pu, Sungwon Kim, Juhwan Noh, Changhyeok Choi, Juhwan Kim, William A. Goddard, Xiangfeng Duan, Yousung Jung
Summary: The study reveals the kinetics of the hydrogen evolution reaction catalyzed by jagged Pt nanowires through a combination of experiment, machine learning, and multiscale advances. Jagged Pt nanowires exhibit bifunctional characteristics and an optimal energy range under alkaline conditions.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Xiaobin Xie, Marijn A. A. van Huis, Alfons van Blaaderen
Summary: The article discusses the surface plasmon resonance of noble-metal nanoparticles and their potential applications in various fields. The researchers were able to synthesize ternary metallic nanoparticles with different morphologies and compositions by adjusting the concentrations of AgNO3, Au NT seeds, and K2PtCl4. They also observed the growth process of the Au NT-Ag-Pt yolk-shell nanoparticles and investigated their plasmonic properties using UV-vis spectroscopy.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Vedran Vonk, Alexander K. Opitz, Sergey Volkov, Thomas F. Keller, Alexander Hutterer, Pirmin Lakner, Florian Bertram, Ju''rgen Fleig, Andreas Stierle
Summary: Three different platinum oxides were observed during electrochemical potential cycles of platinum thin film model electrodes on yttria-stabilized zirconia at 702 K in air. Electron and atomic microscopy showed delamination and the formation of pyramidlike blisters on the platinum electrode. The identified oxides were an ultrathin PtOx at the buried Pt/YSZ interface, polycrystalline beta-PtO2 inside the blisters, and an ultrathin alpha-PtO2 at the Pt/air interface.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ke Huang, Kihyun Shin, Graeme Henkelman, Richard M. Crooks
Summary: The method allows for synthesizing and studying shape-controlled single Pt nanoparticles supported on carbon nanoelectrodes. It enables direct correlation of experimental results to first-principles theory, avoiding the difficulty of analyzing an ensemble of nanoparticles with different sizes and structures.
Article
Chemistry, Physical
Luis E. Botello, Marco Schoenig, Jose Solla-Gullon, Victor Climent, Juan M. Feliu, Rolf Schuster
Summary: Platinum nanoparticles play a crucial role in electrochemical applications, and understanding their properties is of great research interest. This study investigates hydrogen adsorption on different shape-controlled platinum nanoparticles using electrochemical microcalorimetry. The entropy of adsorption is obtained and related to its binding condition with the surface. The study shows good agreement between the adsorption entropy on different particle geometries and the single crystal sites related to the respective faces, providing possibilities for further research on analogous surfaces.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Materials Science, Multidisciplinary
Cristina V. Manzano, Laetitia Philippe, Albert Serra
Summary: In the last decade, nanostructuration has become a popular research topic due to the observation of interesting properties and applications. This review focuses on the synthesis, growth mechanisms, parameters, properties, and applications of ZnO nanowires grown by electrodeposition and electroless methods, revealing that the architecture of the ZnO nanowires plays a significant role in determining their properties and applications.
CRITICAL REVIEWS IN SOLID STATE AND MATERIALS SCIENCES
(2022)
Article
Engineering, Chemical
Jianjun Zhou, Fan Pan, Tian Wang, Yujie Zhang, Qiaofeng Yao, Chao Zhu, Yunqing Zhu, Hongrui Ma, Junfeng Niu
Summary: Pt atomic-level engineering is an effective strategy for achieving minimal Pt dosage and maximum electrocatalytic performance. In this study, ultrasmall L-Cysteine-protected Pt-8 nanoclusters were synthesized using a one-step route and co-catalysis with RuO2-IrO2 was used for the electrocatalytic degradation of tetracycline. The nanocluster electrocatalyst exhibited outstanding anti-sintering properties, excellent electrocatalytic activity, and high stability for tetracycline degradation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Article
Physics, Applied
Zhen Liu, Shunsuke Abe, Makoto Shimizu, Hiroo Yugami
Summary: In this study, a MIM diode with a strongly enhanced electric field was developed using the self-assembly of Pt nanoparticles via atomic layer deposition. By shaping the tunneling barrier, current density and asymmetry were simultaneously enhanced by several orders of magnitude compared with the symmetric MIM diode. The diode efficiency of the proposed MIM diodes was experimentally demonstrated to be 231 times greater than that of the MIM diode without NPs, showing significant potential for high-frequency rectification in optical rectenna.
APPLIED PHYSICS LETTERS
(2023)
Article
Electrochemistry
Leon Jacobse, Vedran Vonk, Ian T. McCrum, Christoph Seitz, Marc T. M. Koper, Marcel J. Rost, Andreas Stierle
Summary: The formation of oxide plays a significant role in the degradation of Pt electrocatalysts, but its exact structure and reaction mechanism are not fully understood. In this study, in situ surface X-ray diffraction experiments were conducted to investigate the oxide formation process at a Pt(111) model electrode near the onset of the oxygen evolution reaction. The results showed that the oxidation process is strongly influenced by reaction kinetics, and a more ordered oxidized surface can be achieved by using low potential sweep rates. It was observed that the oxidation process can be divided into two consecutive steps: a place-exchange process followed by the formation of a partially disordered oxide. Additionally, the study revealed that the disordered oxide is responsible for the surface roughening observed during potential cycling.
ELECTROCHIMICA ACTA
(2022)
Article
Materials Science, Ceramics
Zhaoyang Liu, Jingkun Yu, Xiangnan Wang, Ling Zhang, Jiakang Wang, Endong Jin, Danbin Jia, Tianpeng Wen, Zhengguo Yan, Lei Yuan, Beiyue Ma
Summary: In this study, magnesite was activated and Mg2B2O5 whiskers were synthesized with high aspect ratio. The Mg2B2O5 ceramics based on the whiskers showed good microwave dielectric properties. The research highlights the importance of B/Mg ratio and reaction temperature in the growth of Mg2B2O5 whiskers.
CERAMICS INTERNATIONAL
(2021)
