Objective:In addition to its positive benefits,caffeine also has harmful consequences.Therefore,it is essential to ascertain its content in various substances.Impact Statement:The present study emphasizes a novel way ...Objective:In addition to its positive benefits,caffeine also has harmful consequences.Therefore,it is essential to ascertain its content in various substances.Impact Statement:The present study emphasizes a novel way of quantification of caffeine in real as well as laboratory samples based on a nanomaterialassisted electrochemical technique.Introduction:Electrochemical sensing is a prominent analytical technique because of its efficiency,speed,and simple preparation and observations.Due to its low chemical potential,SnO_(2)(tin oxide)demonstrates rapid redox reactions when used as an electrode.The presence of shielded 4f levels contributes to its distinctive optical,catalytic,and electrochemical capabilities.Methods:An efficient coprecipitation approach,which is simple and rapid and operates at low temperatures,is utilized to produce zinc-doped tin oxide nanoparticles(Zn–SnO_(2)nanoparticles).Zinc doping is used to modify the optoelectronic characteristics of tin oxide nanoparticles,rendering them very efficient as electrochemical sensors.Results:The crystal structure of samples was analyzed using x-ray diffraction,electronic transitions were calculated using ultraviolet–visible spectroscopy,and surface morphology was analyzed using field emission scanning electron microscopy.The x-ray diffraction investigation revealed that the produced Zn-doped SnO2 nanoparticles exhibit tetragonal phases,and the average size of their crystallites reduces upon doping Zn with SnO2.The bandgap energy calculated using the Tauc plot was found to be 3.77 eV.Conclusion:The fabricated caffeine sensor exhibits a sensitivity of 0.605μAμM−1 cm−2,and its limit of detection was found to be 3μM.展开更多
基金Dr.Gaurav Bhanjana is thankful to CSIR,Government(Govt.)of India,for providing CSIR-SRA(No.B-12998 dated 2023 March 31)Mr.Ravinder Lamba is thankful to UGC,Govt.of India,for providing SRF vide letter number 1399/(CSIR-UGC NET JUNE 2019)dated 2019 December 16.Sandeep Kumar thanks Punjab Engineering College(Deemed to Be University)for providing a research initiation grant(No.PEC/DSR&IC/54 dated 2024 April 10)+1 种基金the Department of Science and Technology,Govt.of India,for a DST-PURSE grant(No.SR/PURSE/2024/350 dated 2024 October 14)The authors thank MoE,Govt.of India,for research grant vide letter no.SPARC/2019-2020/P2065/SL dated 2023 July 28.
文摘Objective:In addition to its positive benefits,caffeine also has harmful consequences.Therefore,it is essential to ascertain its content in various substances.Impact Statement:The present study emphasizes a novel way of quantification of caffeine in real as well as laboratory samples based on a nanomaterialassisted electrochemical technique.Introduction:Electrochemical sensing is a prominent analytical technique because of its efficiency,speed,and simple preparation and observations.Due to its low chemical potential,SnO_(2)(tin oxide)demonstrates rapid redox reactions when used as an electrode.The presence of shielded 4f levels contributes to its distinctive optical,catalytic,and electrochemical capabilities.Methods:An efficient coprecipitation approach,which is simple and rapid and operates at low temperatures,is utilized to produce zinc-doped tin oxide nanoparticles(Zn–SnO_(2)nanoparticles).Zinc doping is used to modify the optoelectronic characteristics of tin oxide nanoparticles,rendering them very efficient as electrochemical sensors.Results:The crystal structure of samples was analyzed using x-ray diffraction,electronic transitions were calculated using ultraviolet–visible spectroscopy,and surface morphology was analyzed using field emission scanning electron microscopy.The x-ray diffraction investigation revealed that the produced Zn-doped SnO2 nanoparticles exhibit tetragonal phases,and the average size of their crystallites reduces upon doping Zn with SnO2.The bandgap energy calculated using the Tauc plot was found to be 3.77 eV.Conclusion:The fabricated caffeine sensor exhibits a sensitivity of 0.605μAμM−1 cm−2,and its limit of detection was found to be 3μM.
