DataVXAdvanced Materials InterfacesPaper
journal article·2021-04

Atomistic Site Control of Pd in Crystalline MnO2 Nanofiber for Enhanced Electrocatalysis

Mengmeng Liu, Shang Hu, Yaojia Zhang, Chuyi Zhao, Wenqian Jiang, Chunhong Qi, Xiaohang Zhu, Pengpeng Qiu, Yu Sun, Kenichi Kato, Yonghui Zhao, Xiaopeng Li, Miho Yamauchi, Wei Luo

Advanced Materials Interfaces· Volume 8· Issue 8
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Source abstract

Abstract

Abstract Oxides supported precious metals have wide applications in (electro‐)catalysis. Although single atom dispersion is known as the most efficient metal utilization strategy, the dependence of the catalytic activity on different sites consisted of various anchoring sites for single atoms is largely unknown. Here, the electrocatalytic activities of crystalline α‐MnO2 with atomistic Pd locating at different sites including substitutional, tunnel, and surface‐bound sites are first predicted, and then experimentally validated by applying different synthetic methods including hydrothermal reaction and impregnation‐calcination. The quantum chemistry calculations together with experimental characterization suggest that substitutional Pd/MnO2 possesses higher activity than the other samples due to the favorable geometric and electronic structures. Substitutional Pd can work synergistically with vicinal Mn sites toward cleavage of OO bonds. This work provides a comprehensive understanding on the impact of atomistic anchoring site and advances the reliable control over the electrocatalytic performance of oxide‐supported single atoms.
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Research context

NanomaterialsCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced battery technologies research · Nanomaterials for catalytic reactions

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials & College of Materials Science and Engineering Donghua University No. 2999 North Renmin Road, Songjiang District Shanghai 201620 China

CAS Key Laboratory of Low‐Carbon Conversion Science and Engineering Shanghai Advanced Research Institute (SARI) Chinese Academy of Sciences (CAS) No. 100, Haike Road, Pudong New District Shanghai 201210 China

Institute for the Advancement of Higher Education Hokkaido University Sapporo Hokkaido 060‐0817 Japan

Department of Chemistry Faculty of Science Hokkaido University N10W8, Kita‐ku Sapporo Hokkaido 060‐0810 Japan

RIKEN SPring‐8 Center 1‐1‐1 Kouto Sayo‐cho, Sayo‐gun Hyogo 679‐5148 Japan

International Institute for Carbon‐Neutral Energy Research (WPI‐I2CNER) Kyushu University Motooka 744 Nishi‐ku Fukuoka 819‐0395 Japan

Advanced Institute for Materials Research (AIMR) Tohoku University 2‐1‐1 Katahira, Aoba‐ku Sendai 980‐8577 Japan

Funding

National Natural Science Foundation of China · Science and Technology Commission of Shanghai Municipality · Fundamental Research Funds for the Central Universities

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