Year: 2026
Type: article
Abstract: Grain boundary (GB), as a type of two-dimensional defect in nanocrystals, has recently been identified as a kind of highly active site for various electrocatalytic reactions, such as hydrogen oxidation reaction (HOR), hydrogen evolution reaction (HER), nitrogen/nitrate reduction reaction (NRR/NO3RR), CO2 reduction reaction (CO2RR), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), and alcohol oxidation reaction (methanol/ethanol oxidation reaction (MOR/EOR)). However, there is still a lack of comprehensive reviews examining how GB engineering affects catalytic activity. In this review, we summarize recent advances in GB-engineered metal-based nanomaterials, highlight the remarkable effects of GB, and discuss the structure–performance relationship of GB-rich nanocrystals in electrocatalytic reactions. First, we introduce the synthesis and characterization of GB-engineered nanocatalysts. Next, we thoroughly discuss the relationship between the structure and performance of GB-engineered nanocatalysts. Finally, we outline the challenges and opportunities in this rapidly evolving field, i.e., GB engineering of nanocatalysts.
Source: Nano Research
Authors: Jie Wang, Yuecheng Xiong, Hao Zeng, Yishui Tang, Weihao Zhong, Yuan Shi, Dan Wu, Fumei Wang, Jian Zhou, Xichen Zhou, Zhanxi Fan
Language: English
Field: Energy
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $5,290
Funder: Xihua University
OpenAlex ID: W7128299507