Article
Chemistry, Physical
Agus R. Poerwoprajitno, Lucy Gloag, John Watt, Soshan Cheong, Xin Tan, Han Lei, Hassan A. Tahini, Aaron Henson, Bijil Subhash, Nicholas M. Bedford, Benjamin K. Miller, Peter B. O'Mara, Tania M. Benedetti, Dale L. Huber, Wenhua Zhang, Sean C. Smith, J. Justin Gooding, Wolfgang Schuhmann, Richard D. Tilley
Summary: Single Pt atom catalysts with high exposure are key targets to enhance electrocatalytic activity, and PtRu alloy nanoparticles are the most active catalysts for the methanol oxidation reaction. This study demonstrates a process to create single-Pt-atom-on-Ru catalysts by growing and spreading Pt islands on Ru branched nanoparticles. The formation of a stable single atom structure is driven by the formation of strong Pt-Ru bonds and the lowering of the surface energy of the Pt islands, resulting in a high current density and mass activity for the methanol oxidation reaction over time.
Article
Energy & Fuels
Hongfei Wang, Kefu Zhang, Jun Qiu, Juan Wu, Jingwen Shao, Yongqi Deng, Yihan Wu, Lifeng Yan
Summary: Photoassisted reduction is important for regulating interfacial interaction in hybrid electrocatalysts like Pt@SnO2/graphene. In this study, a well-hierarchical heterostructure was successfully developed using hydrothermal and UV excitation processes. The small SnO2 nanocrystals allowed for great regulation opportunities from UV irradiation, ultimately improving electrical conductivity for the composite catalysts.
Article
Chemistry, Multidisciplinary
Zhengcheng Wang, Shangyan Zhou, Wei Liao, Qian Zhou, Meida Chen, Jin Long, Qingmei Wang
Summary: Designing efficient and inexpensive Pt-based catalysts is crucial for the commercialization of direct methanol fuel cells. In this study, highly catalytic performance PtFe alloys supported on multiwalled carbon nanotubes (MWCNTs) decorated with nitrogen-doped carbon (NC) were successfully prepared by co-engineering the surface composition and electronic structure. The Pt1Fe3@NC/MWCNTs catalyst exhibited significantly improved mass activity in methanol oxidation reaction and lower CO oxidation initial potential compared to the pristine Pt/C catalyst, thanks to the optimal surface compositions, anti-corrosion ability of MWCNTs, strong electron interaction, and the N-doped carbon layer.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Chemistry, Physical
Qi Hua, Nawal M. M. Alghoraibi, Xinyi Chen, Andrew A. A. Gewirth
Summary: In this study, Pt electrodes with high roughness factors were prepared by an electrodeposition method. These rough electrodes exhibited a linear response in methanol oxidation reaction in both acidic and basic electrolytes, and showed better performance compared to previous studies.
Article
Chemistry, Multidisciplinary
Taichun Wu, Mengyu Gan, Li Ma, Shuang Wei, Qinglan Fu, Yanling Yang, TingTing Li, Fei Xie, Wang Zhan, Xiujuan Zhong
Summary: In this study, a phosphorus-doped CuWO4 carbon nanocomposite was synthesized as a Pt-based co-catalyst, exhibiting excellent catalytic activity in methanol oxidation and optimal tolerance in anti-poisoning, with a lower initial potential.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Electrochemistry
Qingchun Wang, Zihao Wang, Xiaolong Liang, Shengli An, Changkun Cai, Yuanyuan Liu, Jinxiao Bao, Xiwen Song
Summary: The effects of CeO2-ZrO2 solid solution on the electrocatalytic activity, stability and anti-CO poisoning performance of methanol fuel cell anodes were investigated. Pt/CeO2-ZrO2/GO showed higher catalytic activity and stability against CO oxidation due to the addition of Zr4+ into the CeO2 lattice, which increased oxygen activity and storage capacity.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Electrochemistry
Shaojun Li, Junming Chen, Lei Bai
Summary: Commercial Pt/C was modified with Ru (IV) species through hydrolysis, which improved the electronic structure and enhanced the methanol electrooxidation performance.
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Guo Zhi, Wenxin Wang, Yang Zhou, Ligang Feng
Summary: In this study, an effective catalyst system was demonstrated by coupling Pt nanoparticles with ZIF-67-derived CoP/NC support for methanol oxidation reaction (MOR) in acidic and alkaline solutions. The Pt-CoP/NC catalyst showed high catalytic activity and stability due to the oxophilic properties of CoP and the strong metal-support interaction. It exhibited significantly higher forward peak current density compared to the Pt-Co/NC and commercial Pt/C catalysts. The Pt-CoP/NC catalyst also demonstrated excellent poisoning resistance.
Article
Chemistry, Physical
Kefu Zhang, Jun Qiu, Juan Wu, Yongqi Deng, Yihan Wu, Lifeng Yan
Summary: This study investigates the efficient catalysts for the methanol oxidation reaction (MOR) by using porous graphene with morphology-controlled TiO2 supported Pt nanoparticles. It is found that TiO2 nanorods with specific facets effectively enhance the Pt trapping ability, improve the adsorption of methanol molecules, and weaken CO intermediate poisoning. The resulting catalysts exhibit superior catalytic activity and long-term durability, surpassing most reported electrocatalysts.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Kee Chun Poon, Quoc Tuan Phan, T. Thang Vo-Doan, Ming Lin, Hirotaka Sato
Summary: This study successfully demonstrated the preparation of amorphous Pt-B-P/C catalyst, which exhibited superior activity and resistance compared to commercial PtRu/C and crystalline Pt-B-P/C, mainly due to the synergistic effect of dual doping and amorphous structure.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Analytical
Jie Yao, Juanjuan Shao, Han Liu, Zhenglong Wu, Wangwang Zheng, Hongyan Miao, Yuan Zhao
Summary: Parallel multiple detections of tumor markers using electrochemical aptasensors is crucial for early monitoring of related cancers. This study explores the use of different electroactive metal nanoparticles to achieve sensitive dual detection of human epidermal growth factor receptor-2 (HER2) and epithelial cell adhesion molecule (EpCAM) in a plasmon-enhanced electrooxidation system.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Jiexin Zhu, Lixue Xia, Ruohan Yu, Ruihu Lu, Jiantao Li, Ruhan He, Yucai Wu, Wei Zhang, Xufeng Hong, Wei Chen, Yan Zhao, Liang Zhou, Liqiang Mai, Ziyun Wang
Summary: Constructing three-dimensional crumpled Ti3C2Tx MXene balls with abundant Ti vacancies via a spray-drying process can effectively anchor Pt clusters and enhance the electrocatalytic activity for methanol oxidation. This material shows a high mass activity and retains a significant portion of its current density even after long-term operation, indicating its potential for practical applications in fuel cells.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Dragana Milosevic, Sanja Stevanovic, Dusan Tripkovic, Ivana Vukasinovic, Vesna Maksimovic, Vladan Cosovic, Nebojsa D. Nikolic
Summary: This research presents the synthesis of new PtSnZn catalysts through a microwave-assisted polyol method for methanol oxidation reaction in low-temperature fuel cells. The synthesized PtSnZn/C catalyst showed high electrocatalytic performance and improved stability compared to PtZn/C catalyst. The beneficial effects of microwave synthesis and well-balanced addition of alloying metals contribute to the observed great electrocatalytic activity.
Article
Electrochemistry
Mariano Asteazaran, German Cespedes, Silvina Bengio, Ana Maria Castro Luna
Summary: One of the significant drawbacks of Direct Methanol Fuel Cells is high overpotential for the methanol oxidation reaction, as well as CO poisoning of Pt. In this study, electrocatalysts with suitable properties and outstanding performance have been developed by synthesizing PtCu and PtCuRu materials through a simple and scalable process. The materials were further treated to enhance their surface with a higher density of active sites and surface defects. The trimetallic catalysts showed a substantial reduction in CO electrooxidation and improved methanol oxidation performance.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Vera Giulimondi, Andrea Ruiz-Ferrando, Adam H. Clark, Selina K. Kaiser, Frank Krumeich, Antonio J. Martin, Nuria Lopez, Javier Perez-Ramirez
Summary: This study investigates the indirect, coordination-induced catalytic synergies in carbon-supported Ru-Pt SACs and reveals a new principle of intermetallic cooperativity.
ADVANCED FUNCTIONAL MATERIALS
(2022)
