Sunflower-Shaped Zinc Oxide Architectures Decorated with Cerium Oxide Nanoparticles for the Stable Detection of ppb-Concentration Benzaldehyde.

IF 9.1 1区 化学 Q1 CHEMISTRY, ANALYTICAL
Yi Zhang,Xinhua Zhao,Xiaxia Xing,Zhenxu Li,Xiaoyu Chen,Xiaoyan Lang,Zhu Zhang,Tingting Wang,Jacek Ryl,Dachi Yang
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引用次数: 0

Abstract

The newly emerged gas sensing detection of benzaldehyde biomarkers is deemed as a noninvasive way to indirectly diagnose lung canceration, in which the benzaldehyde sensing is simultaneously endowed with high stability, along with humidity tolerance and ppb-concentration detection limit, but requires further developing. Here, sunflower-shaped zinc oxide architectures decorated with cerium oxide nanoparticles (ZnO ACHs/CeO2 NPs) have been synthesized via a hydrothermal process followed by annealing for stable and ppb-concentration benzaldehyde sensing. As-prepared ZnO ACHs/CeO2 NPs are observed with sunflower-shaped architectures decorated with CeO2 NPs. Beneficially, ZnO ACHs/CeO2 NPs exhibit a 50 ppb detection limit, 71 days stability, and 90% RH humidity tolerance at 240 °C. Such an excellent benzaldehyde sensing performance might be attributed to the accelerated electron transfers by forming heterojunctions and enriched adsorption sites over sunflower-shaped architectures. Remarkably, the classification algorithm combined with principal component analysis was conducted to identify the benzaldehyde from other interfering gases. Practically, ZnO ACHs/CeO2 NPs are integrated into the benzaldehyde sensing device, which has potential in the future early diagnosis of lung canceration.
纳米氧化铈修饰的向日葵型氧化锌结构稳定检测ppb浓度苯甲醛。
新出现的苯甲醛生物标志物气敏检测被认为是间接诊断肺癌的一种无创方法,其中苯甲醛气敏检测同时具有较高的稳定性、耐湿性和ppb浓度检测限,但需要进一步发展。本文通过水热法和退火法制备了以氧化铈纳米粒子(ZnO ACHs/CeO2 NPs)装饰的向日葵形氧化锌结构,用于稳定和ppb浓度的苯甲醛传感。用CeO2 NPs装饰的向日葵状结构观察了制备的ZnO ACHs/CeO2 NPs。有利的是,ZnO ACHs/CeO2 NPs在240°C下具有50 ppb的检测限,71天的稳定性和90%的RH耐湿性。这种优异的苯甲醛传感性能可能是由于在向日葵形结构上形成异质结和富集的吸附位点加速了电子转移。值得注意的是,结合主成分分析的分类算法可以从其他干扰气体中识别出苯甲醛。实际上,ZnO ACHs/CeO2 NPs被集成到苯甲醛传感装置中,在未来肺癌的早期诊断中具有潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
ACS Sensors
ACS Sensors Chemical Engineering-Bioengineering
CiteScore
14.50
自引率
3.40%
发文量
372
期刊介绍: ACS Sensors is a peer-reviewed research journal that focuses on the dissemination of new and original knowledge in the field of sensor science, particularly those that selectively sense chemical or biological species or processes. The journal covers a broad range of topics, including but not limited to biosensors, chemical sensors, gas sensors, intracellular sensors, single molecule sensors, cell chips, and microfluidic devices. It aims to publish articles that address conceptual advances in sensing technology applicable to various types of analytes or application papers that report on the use of existing sensing concepts in new ways or for new analytes.
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