Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), School of Chemistry and Materials Science, and National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China.
Adv Mater. 2015 Nov 25;27(44):7025-42. doi: 10.1002/adma.201502068. Epub 2015 Sep 30.
Oxidation reactions by molecular oxygen (O2 ) over palladium (Pd)-based nanomaterials are a series of processes crucial to the synthesis of fine chemicals. In the past decades, investigations of related catalytic materials have mainly been focused on the synthesis of Pd-based nanomaterials from the angle of tailoring their surface structures, compositions and supporting materials, in efforts to improve their activities in organic reactions. From the perspective of rational materials design, it is imperative to address the fundamental issues associated with catalyst performance, one of which should be oxygen activation by Pd-based nanomaterials. Here, the fundamentals that account for the transformation from O2 to reactive oxygen species over Pd, with a focus on singlet O2 and its analogue, are introduced. Methods for detecting and differentiating species are also presented to facilitate future fundamental research. Key factors for tuning the oxygen activation efficiencies of catalytic materials are then outlined, and recent developments in Pd-catalyzed oxygen-related organic reactions are summarized in alignment with each key factor. To close, we discuss the challenges and opportunities for photocatalysis research at this unique intersection as well as the potential impact on other research fields.
钯（Pd）基纳米材料的分子氧（O2）氧化反应是精细化学品合成中一系列至关重要的过程。在过去的几十年中，相关催化材料的研究主要集中在通过调整其表面结构、组成和支撑材料来合成 Pd 基纳米材料，以努力提高其在有机反应中的活性。从合理材料设计的角度来看，必须解决与催化剂性能相关的基本问题，其中之一应该是 Pd 基纳米材料对氧的活化。在这里，介绍了 Pd 上 O2 向活性氧物种转化的基本原理，重点介绍了单线态 O2 及其类似物。还介绍了用于检测和区分物种的方法，以促进未来的基础研究。然后概述了调节催化材料氧活化效率的关键因素，并根据每个关键因素总结了 Pd 催化的与氧相关的有机反应的最新进展。最后，我们讨论了在这个独特的交叉点进行光催化研究的挑战和机遇以及对其他研究领域的潜在影响。
