Ordering Bimetallic Cu-Pd Catalysts onto Orderly Mesoporous SrTiO3-Crystal Nanotubular Networks for Efficient Carbon Dioxide Photoreduction

Fan Fang; Jie Zhang; Lijing Xiang; Chong Chen; Nengjie Feng; Yan Lv; Kun Chang; Jun Huang

doi:10.1002/anie.202405807

Ordering Bimetallic Cu-Pd Catalysts onto Orderly Mesoporous SrTiO3-Crystal Nanotubular Networks for Efficient Carbon Dioxide Photoreduction

Angew Chem Int Ed Engl. 2024 May 16:e202405807. doi: 10.1002/anie.202405807. Online ahead of print.

Authors

Fan Fang¹, Jie Zhang², Lijing Xiang², Chong Chen², Nengjie Feng³, Yan Lv⁴, Kun Chang², Jun Huang⁵

Affiliations

¹ Nanjing University of Aeronautics and Astronautics, College of Materials and Science Technology, 30 General Avenue, 210000, Nanjing, CHINA.
² Nanjing University of Aeronautics and Astronautics, College of Materials Science and Technology, 210016, Nanjing, CHINA.
³ Nanjing Tech University, College of Chemical Engineering, CHINA.
⁴ Nanjing University, School of Management and Engineering, CHINA.
⁵ The University of Sydney, School of Chemical and Biomolecular Engineering, Sydney, AUSTRALIA.

PMID: 38757228
DOI: 10.1002/anie.202405807

Abstract

Artificial photosynthesis of fuels has garnered significant attention, with SrTiO3 emerging as a potential candidate for photocatalysis due to its exceptional physicochemical properties. However, selectively converting CO2 into fuels with desired reaction products remains a grand challenge. Herein, we design an updated method via an aging strategy based on the electrospinning technique to synthesize a single-crystalline Al-doped SrTiO3 nanotubular networks with self-assembled orderly mesopores, further modified by Cu-Pd alloy. It exhibits both high crystallinity and superior cross-linked mesoporous structures, effectively facilitating charge carrier transfer, photon utilization, and mass transfer, with a remarkable enhancement from 0.025 mmol·h-1·m-2 to 1.090 mmol·h-1·m-2 in the CO production rate. Meanwhile, the ordered arrangement of Cu and Pd atoms on the (111) surface can promote the rate-determining step (*CO2 to *COOH), which is also responsible for its good activity. The presence of CuO in the reaction confers a significant advantage for CO desorption, leading to a remarkable CO selectivity of 95.54%. This work highlights new insights into developing advanced heterogeneous photocatalysts.

Keywords: artificial photosynthesis * Al-doped SrTiO3 * nanotubular networks * orderly mesopores * CuPd alloy.