DataVXChemistry of MaterialsPaper
journal article·2023-10-10

Hydrogen Sulfide Gas Detection Using Two-Dimensional Rhodonite Silicate

Preeti Lata Mahapatra, Caique Campos de Oliveira, P. R. Sreeram, Sivaraj Kanneth Sivaraman, Suman Sarkar, Gelu Costin, Basudev Lahiri, Pedro Alves da Silva Autreto, Chandra Sekhar Tiwary

Chemistry of Materials· Volume 35· Issue 19
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Source abstract

Abstract

Hydrogen sulfide is a hazardous gas that is found in common industrial waste sources, including sewage and oil refineries; it is lethal at concentrations exceeding 100 ppm. Two-dimensional (2D) oxide materials with a high surface area and environmental stability can be utilized for ultralow concentration gas sensing (H 2 S gas). Here, we demonstrate the gas sensing properties of two-dimensional rhodonite silicate (R-silicate) extracted from natural mineral ore. 2D R-silicate shows high sensitivity of up to 0.2 ppm –1 and high selectivity toward H 2 S compared to CO 2, ethanol, acetone, and ammonia. The sensors developed using 2D R-silicate are found to be stable after five months. The high surface area and composition consisting of Mn atoms play a significant role in the sensing behavior. Ab initio computing simulations explain the mechanism of the selectivity of H 2 S over CO 2 using 2D R-silicate. The simulation also demonstrates the chemical interaction of H 2 S with the 2D surface of R-silicate, which is further supported by Raman spectroscopy. The findings of this study provide new opportunities for using environmentally stable natural silicate 2D materials as efficient replacements for conventional metal oxides for ultrasensitive sensors.
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Research context

Nanomaterials

OpenAlex topics: Gas Sensing Nanomaterials and Sensors · Analytical Chemistry and Sensors · Air Quality Monitoring and Forecasting

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of NanoScience and Technology, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India

Center for Natural and Human Sciences (CCNH), Federal University of ABC (UFABC), Santo André 09210-580, Brazil

Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India

Department of Physics, Aquinas College, Edakochi, Kochi 682010, Kerala, India

Department of Materials Engineering, Indian Institute of Technology Jammu, Jammu 181121, India

Department of Earth, Environmental and Planetary Sciences, Rice University, Houston, Texas 77005, United States

Department of Electronics and Electrical Communication Engineering, Indian Institute of Technology Kharagpur, Kharagpur 721302, West Bengal, India

Funding

Department of Science and Technology, Ministry of Science and Technology · Conselho Nacional de Desenvolvimento Científico e Tecnológico · Agência Nacional do Petróleo, Gás Natural e Biocombustíveis · Asian Office of Aerospace Research and Development · Multiuser Computational Center (CCM-UFABC)

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