The in situ synchrotron radiation experiments and DFT calculations suggest that the elongated Pt-O bond acts as the active site during the HER process, which can accelerate the coupling of proton and electron and the rapid release of H. This work complements the knowledge boundary of Pt-based ...
该工作揭示了O原子在铂基电催化剂中的作用,提高了对基于Pt的HER电催化剂的进一步理解,对于设计制备高活性的Pt基电催化剂具有重要的借鉴意义。 Fei-Yang Yu, et al. Pt-O bond as an active site superior to Pt 0 in hydrogen evolution reaction. Nature...
近日，中国科学院化学研究所韩布兴和孟庆磊等提出了一种通过设计和构建催化位点来调节HDO性能的方案，该方案通过控制Pt和Co物种之间的金属间相互作用和结合，允许芳香环的有效加氢和C-O键的选择性切割。研究人员发现，在介孔碳(MC；PtCo1/MC)上以Co单原子位点(SASs)修饰的Pt纳米粒子对于保留醚C-O (R)键和C-O ...
Potential energy diagrams and configurations for CO oxidation cycle. CO oxidation proceeds onathe Pt1/CeO2andbat the Pt-O-Pt catalytic unit in Pt8O14/CeO2. CO adsorption energies and reaction barriers are indicated in kJ/mol in the potential energy diagram. The bond distance between the two ...
Bond-selective imaging by optically sensing the mid-infrared photothermal effect,Sci. Adv. 2021; 7 : eabg1559.具体案例:1. 同位素标记的大肠杆菌单细菌细胞的mIRage显微红外谱图与成像 近期,英国利物浦大学Roy Goodacre教授分享了关于同位素标记的细菌的振动光谱研究成果。该研究借助于单细胞亚微米分辨率红外拉曼同...
(Pt or Pt–Au) composite coating was developed as bond coat of TBC.•The novel TBC has excellent high-temperature oxidation and spallation resistance.•Noble metals can absorb more energy leading to particles dispersed structure.•No interdiffusion has been taken place between the bond coat ...
This temperature sweep illustrates the limiting regimes associated with NOx adsorption: kinetic limitations at lower temperatures due to the strength of the Pt–O bond and insufficient storage sites at higher temperatures. This study propose three routes for the storage of NOx on Pt/K/Al2O3, two...
TBC (Thermal Barrier Coating) with YSZ-Al2O3/YSZ as top coat (TC) and MCrAlY alloy as bond coat (BC) marked as YSZ-Al2O3/YSZ double layer TBC was used for ... Widyastuti,K Parindra,L Mariani,... - 《Advanced Materials Research》 被引量: 0发表: 2015年 Degradation of Thermal Ba...
The appropriate level of Ti-O bond energy and an excessively high Hf-O bond energy were suggested as the main reasons for such a critical difference. Published by AIP Publishing. 展开 关键词: hafnium compounds ion beams platinum sputter deposition tantalum compounds titanium compounds DOI: 10.1063...
{* }}\)) on these Co and Pt atoms are shown in Supplementary Fig.26)14. The constructed atomic structure of Pt-SAs/CoNC is shown in Supplementary Fig.27with Pt-O-Co bond, which is similar to the Co-O-Pt interface in Pt-ACs/CoNC. The strong interaction within Pt-O-Co bond ...