title: Application of pristine and doped SnO2nanoparticles as a matrix for agro-hazardous material (organophosphate) detection.
abstract: With an increasing focus on applied research, series of single/composite materials are being investigated for device development to detect several hazardous, dangerous, and toxic molecules. Here, we report a preliminary attempt of an electrochemical sensor fabricated using pristine Ni and Cr-doped nano tin oxide material (SnO2) as a tool to detect agro-hazardous material, i.e. Organophosphate (OP, chlorpyrifos). The nanomaterial was synthesized using the solution method. Nickel and chromium were used as dopant during synthesis. The synthesized material was calcined at 1000 °C and characterized for morphological, structural, and elemental analysis that showed the formation of agglomerated nanosized particles of crystalline nature. Screen-printed films of powder obtained were used as a matrix for working electrodes in a cyclic voltammogram (CV) at various concentrations of organophosphates (0.01 to 100 ppm). The CV curves were obtained before and after the immobilization of acetylcholinesterase (AChE) on the nanomaterial matrix. An interference study was also conducted with hydroquinone to ascertain the selectivity. The preliminary study indicated that such material can be used as suitable matrix for a device that can easily detect OP to a level of 10 ppb and thus contributes to progress in terms of desired device technology for the food and agricultural-industries.
authors.affiliation: Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025 India.
authors.forename: Naushad
authors.initials: N
authors.lastname: Khan
authors.affiliation: Indian Institute of Chemical Technology, Telangana, Hyderabad 50007, India.
authors.forename: Taimur
authors.initials: T
authors.lastname: Athar
authors.affiliation: Department of Applied Medical Science, Riyadh Community College, King Saud University, Riyadh, 11437 Saudi Arabia.|Biomedical Engineering Department, Faculty of Engineering, Helwan University, P.O. Box, 11792, Helwan, Egypt.
authors.forename: H
authors.initials: H
authors.lastname: Fouad
authors.affiliation: Promising Centre for Sensors and Electronic Devices, Najran University, P.O. Box 1988, Najran, 11001, Saudi Arabia.|Department of Chemistry, Faculty of Sciences and Arts, Najran University, P.O. Box 1988, Najran, 11001, Saudi Arabia.
authors.forename: Ahmad
authors.initials: A
authors.lastname: Umar
authors.affiliation: Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025 India.
authors.forename: Z A
authors.initials: ZA
authors.lastname: Ansari
authors.affiliation: Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, New Delhi, 110025 India.
authors.forename: S G
authors.initials: SG
authors.lastname: Ansari