Decorated-Induced Oxygen Vacancy Engineering for Ultra-Low Concentration Nonanal Sensing: A Case Study of La-Decorated BiOCO

Overview

Journal Adv Sci (Weinh)

Specialty Biomedical Engineering

Date 2024 Sep 28

PMID 39340830

Authors

Zichen Zheng

Kewei Liu

Yiwen Zhou

Kaichun Xu

Yifan Luo

Jiabao Ding

Carla Bittencourt

Marc Debliquy

Chao Zhang

Affiliations

Soon will be listed here.

Abstract

La-decorated BiOCO (BCO-La) microspheres are synthesized using a facile wet chemical strategy for sensing low-concentration nonanal (CHO) at room temperature. These BCO-La gas sensors are applied to evaluate agricultural product quality, specifically for cooked rice. The sensitivity of the BCO-6La sensor significantly surpassed that of the pure BCO sensor, achieving a response value of 174.6 when detecting 30 ppm nonanal gas. Notably, the BCO-6La sensor demonstrated a faster response time (36 s) when exposed to 18 ppm of nonanal. Additionally, the selectivity toward nonanal gas detection is higher (approximately 4-24 times) compared to interfering gases (1-octanol, geranyl acetone, linalool, hexanal, 2-pentyfuran, and 1-octen-3-ol) during cooked rice quality detection. The gas sensing mechanism and the factors contributing to the enhanced sensing performance of the BCO-La microspheres are demonstrated through in situ FT-IR spectra and DFT analysis while the realistic detection scenario is carried out. In a broader context, the reported sensors here represent a novel platform for the detection and monitoring of gases released by agricultural products during storage.

Citing Articles

Decorated-Induced Oxygen Vacancy Engineering for Ultra-Low Concentration Nonanal Sensing: A Case Study of La-Decorated BiOCO.

Zheng Z, Liu K, Zhou Y, Xu K, Luo Y, Ding J Adv Sci (Weinh). 2024; 11(43):e2408096.

PMID: 39340830 PMC: 11578350. DOI: 10.1002/advs.202408096.

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