Publication Date:
2016-05-14
Description:
Atomically dispersed noble metal catalysts often exhibit high catalytic performances, but the metal loading density must be kept low (usually below 0.5%) to avoid the formation of metal nanoparticles through sintering. We report a photochemical strategy to fabricate a stable atomically dispersed palladium-titanium oxide catalyst (Pd1/TiO2) on ethylene glycolate (EG)-stabilized ultrathin TiO2 nanosheets containing Pd up to 1.5%. The Pd1/TiO2 catalyst exhibited high catalytic activity in hydrogenation of C=C bonds, exceeding that of surface Pd atoms on commercial Pd catalysts by a factor of 9. No decay in the activity was observed for 20 cycles. More important, the Pd1/TiO2-EG system could activate H2 in a heterolytic pathway, leading to a catalytic enhancement in hydrogenation of aldehydes by a factor of more than 55.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Liu, Pengxin -- Zhao, Yun -- Qin, Ruixuan -- Mo, Shiguang -- Chen, Guangxu -- Gu, Lin -- Chevrier, Daniel M -- Zhang, Peng -- Guo, Qing -- Zang, Dandan -- Wu, Binghui -- Fu, Gang -- Zheng, Nanfeng -- New York, N.Y. -- Science. 2016 May 13;352(6287):797-801. doi: 10.1126/science.aaf5251.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Engineering Research Center for Nano-Preparation Technology of Fujian Province, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. ; Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China. ; Department of Chemistry, Dalhousie University, Halifax, Nova Scotia B3H 4R2, Canada. ; State Key Laboratory for Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials, Engineering Research Center for Nano-Preparation Technology of Fujian Province, National Engineering Laboratory for Green Chemical Productions of Alcohols, Ethers, and Esters, and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China. nfzheng@xmu.edu.cn gfu@xmu.edu.cn.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/27174982" target="_blank"〉PubMed〈/a〉
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
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Chemistry and Pharmacology
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Computer Science
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Medicine
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Natural Sciences in General
,
Physics
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