Emerging nano-enabled gas sensor for environmental monitoring – Perspectives and open challenges

IF 6.7 Q1 ENVIRONMENTAL SCIENCES

Current Opinion in Environmental Science and Health Pub Date : 2024-02-01 DOI:10.1016/j.coesh.2024.100532

Urmila Chakraborty , Ajeet Kaushik , Ganga Ram Chaudhary , Yogendra Kumar Mishra

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Abstract

Proper vigilance on the levels of various gases of concern, especially the toxic ones, is vital for reducing the risk of environmental damage. This impels the demand for highly accurate and adequate gas-sensing systems, which are in demand but not in practice. This gap can be filled by fifth-generation nano-enabled gas sensors, which can offer room-temperature sensing, flexibility, high-selectivity, low-cost, self-powered operation, humidity resistance, and portable size. These features are the key requirements for integrating gas sensors into modern Internet-of-things systems. This perspective highlights trends and progressions (2020–2023) in developing tailored nanomaterials to fabricate cutting-edge gas sensors for high performance in the desired manner and conditions, for example, point-of-care, and point-of-location testing. The challenges associated with such materials and the scientific endeavors to address such issues have also been discussed.

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用于环境监测的新兴纳米气体传感器--前景与挑战

适当监控各种相关气体的含量，尤其是有毒气体的含量，对于降低环境破坏风险至关重要。这就促使人们需要高精度和适当的气体传感系统，但这种系统虽有需求，但并不实用。第五代纳米气体传感器可以填补这一空白，它可以提供室温传感、灵活性、高选择性、低成本、自供电操作、防潮和便携式尺寸。这些特性是将气体传感器集成到现代物联网系统的关键要求。本视角重点介绍了开发定制纳米材料的趋势和进展（2020-2023 年），这些材料可用于制造最先进的气体传感器，在所需的方式和条件下实现高性能，例如，护理点和定位点测试。此外，还讨论了与此类材料相关的挑战以及解决这些问题的科学努力。

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