caa a22 4500 445303514 CHVBK 20180317142605.0 cr unu---uuuuu 170323e20100301xx s 000 0 eng 10.1007/s12274-010-1021-5 doi (NATIONALLICENCE)springer-10.1007/s12274-010-1021-5 New insights into the growth mechanism and surface structure of palladium nanocrystals [Elektronische Daten] [Byungkwon Lim, Hirokazu Kobayashi, Pedro Camargo, Lawrence Allard, Jingyue Liu, Younan Xia] This paper presents a systematic study of the growth mechanism for Pd nanobars synthesized by reducing Na2PdCl4 with L-ascorbic acid in an aqueous solution in the presence of bromide ions as a capping agent. Transmission electron microscopy (TEM) and high-resolution TEM analyses revealed that the growth at early stages of the synthesis was dominated by particle coalescence, followed by shape focusing via recrystallization and further growth via atomic addition. We also investigated the detailed surface structure of the nanobars using aberration-corrected scanning TEM and found that the exposed {100} surfaces contained several types of defects such as an adatom island, a vacancy pit, and atomic steps. Upon thermal annealing, the nanobars evolved into a more thermodynamically favored shape with enhanced truncation at the corners. Tsinghua University Press and Springer-Verlag Berlin Heidelberg, 2010 Palladium nationallicence nanocrystals nationallicence growth nationallicence coalescence nationallicence surface evolution nationallicence Lim Byungkwon Department of Biomedical Engineering, Washington University, 63130, St. Louis, Missouri, USA aut Kobayashi Hirokazu Department of Biomedical Engineering, Washington University, 63130, St. Louis, Missouri, USA aut Camargo Pedro Department of Biomedical Engineering, Washington University, 63130, St. Louis, Missouri, USA aut Allard Lawrence Materials Science and Technology Division, Oak Ridge National Laboratory, 37831, Oak Ridge, Tennessee, USA aut Liu Jingyue Center for Nanoscience and Department of Chemistry and Biochemistry, University of Missouri-St. Louis, 63121, St. Louis, Missouri, USA aut Xia Younan Department of Biomedical Engineering, Washington University, 63130, St. Louis, Missouri, USA aut Nano Research Tsinghua Press 3/3(2010-03-01), 180-188 1998-0124 3:3<180 2010 3 12274 https://doi.org/10.1007/s12274-010-1021-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s12274-010-1021-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lim Byungkwon Department of Biomedical Engineering, Washington University, 63130, St. Louis, Missouri, USA aut NATIONALLICENCE 700 1- Kobayashi Hirokazu Department of Biomedical Engineering, Washington University, 63130, St. Louis, Missouri, USA aut NATIONALLICENCE 700 1- Camargo Pedro Department of Biomedical Engineering, Washington University, 63130, St. Louis, Missouri, USA aut NATIONALLICENCE 700 1- Allard Lawrence Materials Science and Technology Division, Oak Ridge National Laboratory, 37831, Oak Ridge, Tennessee, USA aut NATIONALLICENCE 700 1- Liu Jingyue Center for Nanoscience and Department of Chemistry and Biochemistry, University of Missouri-St. Louis, 63121, St. Louis, Missouri, USA aut NATIONALLICENCE 700 1- Xia Younan Department of Biomedical Engineering, Washington University, 63130, St. Louis, Missouri, USA aut NATIONALLICENCE 773 0- Nano Research Tsinghua Press 3/3(2010-03-01), 180-188 1998-0124 3:3<180 2010 3 12274 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer