journal article·2023-03Open access

Harvesting the Gas Molecules by Bioinspired Design of 1D/2D Hybrids Toward Sensitive Acetone Detecting

Muyu Yan, Xiaoping Gao, Xiao Han, Danni Zhou, Yue Lin, Wenxing Chen, Zhenggang Xue, Yuen Wu

Small Structures· Volume 4· Issue 3

Abstract

Single‐atom catalysts (SACs) are highly attractive in many surface‐dependent reactions due to their extraordinary reactivity and maximum atomic efficiency. However, in a practical catalytic system, guiding and transferring the reactant molecules to target single‐atom sites are crucial processes for achieving high‐efficient reactions. Herein, gas‐microchannels on TiO2 nanorod‐supported Pt single‐atom catalyst by in situ growing derivative TiO2 nanosheets are constructed. Those perpendicular‐grown TiO2 nanosheets can guide gas molecules to the reactive single Pt sites and thus realize an intact system of guidance‐transfer‐reaction. Experimentally, the local coordination and electronic states of Pt species decrease with the growth of nanosheets, which could significantly strengthen the adsorption and activation of oxygen molecules toward the acetone sensing. The final Pt1/TiO2 catalysts exhibit a high sensing response (13.6–50 ppm) to acetone gas, which are approximately three times higher than that of catalysts without scaly shell (4.8–50 ppm).
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Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced Photocatalysis Techniques · Gas Sensing Nanomaterials and Sensors

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

Affiliations

The First Affiliated Hospital of USTC Division of Life Sciences and Medicine University of Science and Technology of China Hefei 230026 China

Dalian National Laboratory for Clean Energy Dalian 116023 China

Center of Advanced Nanocatalysis (CAN) Department of Applied Chemistry University of Science and Technology of China Hefei 230026 China

Energy & Catalysis Center School of Materials Science and Engineering Beijing Institute of Technology Beijing 100081 China

NEST Laboratory Department of Physics College of Science Shanghai University Shanghai 200444 China

Department of Chemistry College of Science Shanghai University Shanghai 200444 China

Funding

Dalian National Laboratory for Clean Energy · Fundamental Research Funds for the Central Universities · USTC Center for Micro- and Nanoscale Research and Fabrication · Fujian Institute of Innovation, Chinese Academy of Sciences · National Synchrotron Radiation Laboratory

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