Straightforward Synthesis of Borophene Nanolayers for Enhanced NO2 Detection in Humid Environments

IF 4.7 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC ACS Applied Electronic Materials Pub Date : 2025-03-16 DOI:10.1021/acsaelm.4c02003

Juan Casanova-Chafer*, and , Carla Bittencourt,

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Abstract

This study investigates the synthesis and gas sensing performance of borophene nanolayers produced through the sonochemical exfoliation method. The advantages of this method, including cost-effectiveness, simplicity and potential for scalability, make it a viable option for practical applications. High-resolution transmission electron microscopy (HRTEM) confirmed the successful exfoliation of boron into nanosheets with an average diameter of approximately 100 nm. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses revealed the β-rhombohedral crystal structure. Additionally, the existence of carbon and oxygen on the surface has been determined and investigated. At room temperature, the borophene nanolayers showed exceptional gas sensing capabilities for detecting nitrogen dioxide (NO₂), especially in a humid environment. The sensitivity was significantly increased by about 50% when water molecules were present. These borophene nanolayers demonstrated unprecedented sensing performance for NO₂, with detection (LOD) and quantification (LOQ) limits of 23 and 76 ppb, respectively.

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用于增强湿润环境中二氧化氮检测的硼罗芬纳米层的直接合成

研究了声化学剥离法制备的硼罗芬纳米层的合成及其气敏性能。这种方法的优点，包括成本效益、简单性和潜在的可扩展性，使其成为实际应用的可行选择。高分辨率透射电子显微镜（HRTEM）证实硼成功剥离成平均直径约为100纳米的纳米片。x射线衍射（XRD）和x射线光电子能谱（XPS）分析显示了β-菱形晶体结构。此外，碳和氧在表面的存在已被确定和研究。在室温下，硼罗芬纳米层在检测二氧化氮（NO2）方面表现出优异的气体传感能力，特别是在潮湿环境中。当水分子存在时，灵敏度显著提高约50%。这些硼苯纳米层对二氧化氮表现出前所未有的传感性能，检测限（LOD）和定量限（LOQ）分别为23和76 ppb。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico

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