title: Azadirachta indica plant-assisted green synthesis of Mn3O4 nanoparticles: Excellent thermal catalytic performance and chemical sensing behavior.
abstract: The leaf extract of Azadirachta indica (Neem) plant was utilized as reducing agent for the green synthesis of Mn3O4 nanoparticles (NPs). The crystalline analysis demonstrated the typical tetragonal hausmannite crystal structure of Mn3O4, which confirmed the formation of Mn3O4 NPs without the existence of other oxides. Green synthesized Mn3O4 NPs were applied for the catalytic thermal decomposition of ammonium perchlorate (AP) and as working electrode for fabricating the chemical sensor. The excellent catalytic effect for the thermal decomposition of AP was observed by decreasing the decomposition temperature by 175 °C with single decomposing step. The fabricated chemical sensor based on green synthesized Mn3O4 NPs displayed high, reliable and reproducible sensitivity of ∼569.2 μA mM(-1) cm(-2) with reasonable limit of detection (LOD) of ∼22.1 μM and the response time of ∼10 s toward the detection of 2-butanone chemical. A relatively good linearity in the ranging from ∼20 to 160 μM was detected for Mn3O4 NPs electrode based 2-butanone chemical sensor.
authors.affiliation: Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur, U.P., India.
authors.forename: Jitendra Kumar
authors.initials: JK
authors.lastname: Sharma
authors.affiliation: Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur, U.P., India. Electronic address: pratibhasri1980@yahoo.co.in.
authors.forename: Pratibha
authors.initials: P
authors.lastname: Srivastava
authors.affiliation: Energy Materials & Surface Science Laboratory, Solar Energy Research Center, School of Chemical Engineering, Chonbuk National University, Jeonju 561-756, Republic of Korea.
authors.forename: Sadia
authors.initials: S
authors.lastname: Ameen
authors.affiliation: New & Renewable Energy Material Development Center (NewREC), Chonbuk National University, Jeonbuk, Republic of Korea. Electronic address: shaheerakhtar@jbnu.ac.kr.
authors.forename: M Shaheer
authors.initials: MS
authors.lastname: Akhtar
authors.affiliation: Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur, U.P., India.
authors.forename: Gurdip
authors.initials: G
authors.lastname: Singh
authors.affiliation: Department of Chemistry, D.D.U. Gorakhpur University, Gorakhpur, U.P., India.
authors.forename: Sudha
authors.initials: S
authors.lastname: Yadava
mesh_terms: D031601:Azadirachta / Q000737:chemistry*; D002074:Butanones / Q000032:analysis; D002384:Catalysis; D055664:Electrochemical Techniques; D055772:Green Chemistry Technology; D006358:Hot Temperature; D017895:Manganese Compounds / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry*; D010472:Perchlorates / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*; D018515:Plant Leaves / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D019163:Reducing Agents / Q000737:chemistry*
chemical_list: D002074:Butanones; D017895:Manganese Compounds; D010087:Oxides; D010472:Perchlorates; D010936:Plant Extracts; D000644:Quaternary Ammonium Compounds; D019163:Reducing Agents; C027424:manganese oxide; C005222:methylethyl ketone; C053506:ammonium perchlorate
keywords: Ammonium perchlorate; Azadirachta indica leaf; Chemical sensor; Electrochemical properties; Mn(3)O(4); Thermal catalysis