Article
Engineering, Environmental
Wenqiang Li, Heng Zhang, Manzhou Hong, Lilei Zhang, Xun Feng, Mengfei Shi, Wenxuan Hu, Shichun Mu
Summary: The study reveals that defect-rich RuO2 and TiO2 nano-heterostructures can enhance the efficiency of electrocatalysis in water splitting, with the formed D-RuO2/TiO2/TM nano-heterostructure showing good activity in hydrogen evolution reactions and oxygen evolution reactions in alkaline media.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Tianqi Yu, Qinglian Xu, Lin Luo, Chenrui Liu, Shibin Yin
Summary: Efficient and robust bifunctional catalysts based on Ru have great potential for water electrolysis. The NiO/RuO2/NF catalyst exhibits good activity and stability for oxygen and hydrogen evolution reactions, requiring only 1.44V for overall water splitting and maintaining steady operation for 72 hours.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Jeng-Lung Chen, Sheng-Yuan Feng, Chih-Jung Lu, Jing-Fang Huang
Summary: In this study, a scalable method for the preparation of carbon-supported Ru/RuO2 nano-boomerangs (Ru/RuO2NB/C) was reported. The carbon promotes the reduction of RuO2 to Ru at relatively low temperatures (about 300 degrees C) without other reductants. The synthesized Ru/RuO2NB/C exhibits excellent bifunctional catalytic activity and stability over the whole pH range, surpassing commercial RuO2/C in acidic, neutral, and alkaline aqueous solutions.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Multidisciplinary Sciences
Juntao Zhang, Guomian Ren, Deyu Li, Qingyu Kong, Zhiwei Hu, Yong Xu, Suling Wang, Lu Wang, Maofeng Cao, Xiaoqing Huang
Summary: In this study, two-dimensional Ru-based snow-like nanosheets with Ru/RuO2 interface were fabricated and engineered via a post-annealing treatment. The optimized Ru/RuO2 nanosheets showed significantly enhanced catalytic activity for hydrogen oxidation reaction and hydrogen evolution reaction, highlighting their potential as efficient catalysts in fuel cells.
Article
Engineering, Environmental
Bingyan Xiong, Wenbin Zhao, Han Tian, Weimin Huang, Lisong Chen, Jianlin Shi
Summary: This study successfully designed and synthesized an efficient and low-cost NiW nano-alloy electro-catalyst. The alloy showed high catalytic activity, stability, and CO tolerance in the hydrogen oxidation reaction.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Fan Liu, Xinghong Cai, Yang Tang, Wenqian Liu, Qianwei Chen, Peixin Dong, Maowen Xu, Yangyang Tan, Shujuan Bao
Summary: This study presents a new method for boosting hydrogen production and removing environmental pollutants through catalytic adsorption of sulfides and promotion of hydrogen evolution reaction kinetics. The assembly of nano-Ni-functionalized molybdenum disulfide nanosheets on steel mesh greatly enhances the catalytic performance and achieves nearly 100% hydrogen production efficiency. The proposed Ni-MoS2-based system consumes 61% less power per kWh than traditional systems, indicating its promising potential for sustainable energy production.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Lixue Zhou, Daming Feng, Chang Liu, Ying Sun, Yang Fu, Tianyi Ma
Summary: This study presents the synthesis of efficient and stable bi-functional electrocatalysts for urea oxidation reaction (UOR) and hydrogen evolution reaction (HER). The catalyst exhibits low voltage requirements under alkaline conditions and enables urea-assisted overall water splitting at a notably lower voltage than complete water decomposition.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Applied
Yuanyuan Cong, Fanchao Meng, Haibin Wang, Di Dou, Qiuping Zhao, Chunlei Li, Ningshuang Zhang, Junying Tian
Summary: In this study, a novel method has been used to fabricate RuO2-PdO heterostructure nano-wire networks with rich interfaces and defects for alkaline hydrogen oxidation reaction. The RuO2-PdO nano-wire exhibits excellent activity, with a mass specific exchange current density 3.1 times higher than commercial Pt/C catalysts, and remains effective at high potential and in the presence of CO. The interfaces between RuO2 and PdO are identified as the active sites, with electronic interactions and rich defects enhancing the adsorption of OHad and weakening the adsorption of Had, thereby accelerating the alkaline HOR process.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Engineering, Environmental
Jing Liu, Jie Wang, Yumeng Fo, Boyang Zhang, Costas Molochas, Jie Gao, Wenzhen Li, Xuejing Cui, Xin Zhou, Luhua Jiang, Panagiotis Tsiakaras
Summary: Here, Ni-Ru nano-twins (Ni1Ru1/C) were reported as a superior bifunctional catalyst for hydrogen oxidation/hydrogen evolution reaction (HOR/HER). The Ni1Ru1/C nano-twins exhibit remarkable HOR activity, comparable to Pt/C, and superior HER activity. The excellent electrochemical stability of the Ni1Ru1/C nanotwins was also demonstrated. Experimental and theoretical studies showed that the electron re-distribution at the Ni/Ru interface of Ni-Ru nano-twins optimizes the binding energy of intermediates, enabling the HOR/HER to proceed via a low energy barrier.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Narges Atrak, Ebrahim Tayyebi, Egill Skulason
Summary: Density functional theory calculations are employed to analyze the active sites for CO2 reduction reaction (CO2RR) on TiO2/RuO2 and SnO2/RuO2 alloys. The results show that bridge Ru-Ti and bridge Ti-Ti sites are the active sites for CO formation, while bridge Ru-Ru sites are favorable for formic acid formation. Additionally, substitution of Cu for one bridge Ru atom in a RuO2 overlayer on TiO2 significantly decreases the overpotential for CO and formic acid formation. The knowledge gained from these calculations can be useful for engineering the active sites in order to enhance the catalytic performance.
Article
Chemistry, Physical
Dong Wook Lee, Daeil Choi, Myeong Jae Lee, Haneul Jin, Sehyun Lee, Injoon Jang, Hee-Young Park, Jong Hyun Jang, Hyoung-Juhn Kim, Kwan-Young Lee, Sung Jong Yoo
Summary: Pure hydrogen is necessary for the commercialization of fuel cells, as carbon monoxide (CO) present in hydrogen can directly affect fuel cell performance. The Pt island RuO2/C (PiR/C) catalyst shows excellent CO management capabilities and high hydrogen oxidation reaction activity, confirmed through various electrochemical analyses.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Seonghun Kim, Dong Suk Han, Hyunwoong Park
Summary: This study introduces a ternary hybrid solar desalination process that combines photoelectrocatalytic water treatment and H-2 production in a single device. The desalination process is initiated by photoinduced charge generation using a TiO2 nanorod array photoanode, while H-2 production is achieved at a high Faradaic efficiency with a composite catalyst. The production of reactive chlorine species from chlorides in the anolyte contributes to the decomposition of urea, overall reducing the energy consumption for desalination.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Analytical
Yajing Lyu, Yu Peng
Summary: In this study, a three-dimensional and hierarchical Ni-Co-S@NiCo-Cu nanostructure was successfully synthesized and demonstrated outstanding electrocatalytic performance in both hydrogen evolution reaction and urea oxidation reaction.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Zijun Zhao, Wenyu Chen, Wanpeng Li, Xiaodong Liang, Hao Yan, Xu Wang, J. C. Huang, Ming Wu
Summary: A novel strategy was developed to fabricate nano-porous silver with different sizes and structures by using different oxidation methods. The NPS fabricated by the strong oxidant-assisted method exhibited a more homogeneous structure and a higher Tafel slope for its hydrogen evolution reaction.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Energy & Fuels
Haslinda Binti Mohd Sidek, So Yeon Yun, Xiaoyan Jin, Seong-Ju Hwang
Summary: In this study, high-performance electrocatalysts Co-MoS2-RuO2 were synthesized through hybridization, and the optimization of electrocatalyst performance with RuO2 nanosheets and Co2+ ion linkers was found to be considerable effective.
