Gas nanosensors for health and safety applications in mining

Baharfar, Mahroo; Lin, Jiancheng; Kilani, Mohamed; Zhao, Liang; Zhang, Qing; Mao, Guangzhao

doi:10.1039/d3na00507k

Cited by 3 publications

(1 citation statement)

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“…These emissions originate from several sources, including the industrial activities, transportation, household waste, and agricultural processes, and cause serious issues, such as respiratory disorders, cardiovascular diseases, cancer, acid rain, global warming, sick house syndrome, and ozone layer depletion. [5,6] Thus, the detection of these gas molecules at low concentration has become very significant in a widespread range of applications, such as controlling indoor air quality, emission control, food safety, monitoring environment, medical diagnosis, and monitoring public and military security. [7][8][9][10] Developing high performance and low power-driven gas sensors for monitoring and detecting various gas molecules and vapor, including the humidity, body odors and highly toxic gases has become highly critical.…”

Section: Introductionmentioning

confidence: 99%

Designing State‐of‐the‐Art Gas Sensors: From Fundamentals to Applications

Humayun,

Bououdina,

Usman

et al. 2024

The Chemical Record

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Gas sensors are crucial in environmental monitoring, industrial safety, and medical diagnostics. Due to the rising demand for precise and reliable gas detection, there is a rising demand for cutting‐edge gas sensors that possess exceptional sensitivity, selectivity, and stability. Due to their tunable electrical properties, high‐density surface‐active sites, and significant surface‐to‐volume ratio, nanomaterials have been extensively investigated in this regard. The traditional gas sensors utilize homogeneous material for sensing where the adsorbed surface oxygen species play a vital role in their sensing activity. However, their performance for selective gas sensing is still unsatisfactory because the employed high temperature leads to the poor stability. The heterostructures nanomaterials can easily tune sensing performance and their different energy band structures, work functions, charge carrier concentration and polarity, and interfacial band alignments can be precisely designed for high‐performance selective gas sensing at low temperature. In this review article, we discuss in detail the fundamentals of semiconductor gas sensing along with their mechanisms. Further, we highlight the existed challenges in semiconductor gas sensing. In addition, we review the recent advancements in semiconductor gas sensor design for applications from different perspective. Finally, the conclusion and future perspectives for improvement of the gas sensing performance are discussed.

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Section: Introductionmentioning

confidence: 99%

Designing State‐of‐the‐Art Gas Sensors: From Fundamentals to Applications

Humayun,

Bououdina,

Usman

et al. 2024

The Chemical Record

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Charge‐Transfer Complexes: Fundamentals and Advances in Catalysis, Sensing, and Optoelectronic Applications

Baharfar,

Hillier,

Mao

2024

Advanced Materials

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Supramolecular assemblies, formed through electronic charge transfer between two or more entities, represent a rich class of compounds dubbed as charge‐transfer complexes (CTCs). Their distinctive formation pathway, rooted in charge‐transfer processes at the interface of CTC‐forming components, results in the delocalization of electronic charge along molecular stacks, rendering CTCs intrinsic molecular conductors. Since the discovery of CTCs, intensive research has explored their unique properties including magnetism, conductivity, and superconductivity. Their more recently recognized semiconducting functionality has inspired recent developments in applications requiring organic semiconductors. In this context, CTCs offer a tuneable energy gap, unique charge‐transport properties, tailorable physicochemical interactions, photoresponsiveness, and the potential for scalable manufacturing. Here, an updated viewpoint on CTCs is provided, presenting them as emerging organic semiconductors. To this end, their electronic and chemical properties alongside their synthesis methods are reviewed. The unique properties of CTCs that benefit various related applications in the realms of organic optoelectronics, catalysts, and gas sensors are discussed. Insights for future developments and existing limitations are described.

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