Fabrication of innovative ZnO nanoflowers showing drastic biological activity

Sharma, Vinay; Mohammad, Akbar; Mishra, Vikash; Chaudhary, Archana; Kapoor, Kshipra; Mobin, Shaikh M.

doi:10.1039/c5nj02391b

Cited by 25 publications

(11 citation statements)

References 51 publications

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“…Asymmetric dimer [Zn(hmp‐H) 2 (H 2 O)( μ ‐Cl)Zn( μ ‐Cl)(Cl) 3 ], ( A) was obtained by the reaction of ZnCl 2 with hmp‐H {hmp‐H (hmp‐H=2‐(2‐hydroxymethyl)pyridine} in MeOH at RT (Scheme ,Path 1) . The two Zn(II) centers are present in hexa‐ and tetra‐coordinated environment.…”

Section: Resultsmentioning

confidence: 99%

“…The two Zn(II) centers are present in hexa‐ and tetra‐coordinated environment. The complete structural aspect was discussed in our recent paper …”

Section: Resultsmentioning

confidence: 99%

“… Schematic diagram for the synthesis of A via Path 1 and for the synthesis of ZnO‐Nanoflowers ( ZnO‐NFs ) via Path 2 …”

Section: Resultsmentioning

confidence: 99%

“…On addition of an aqueous NaOH solution dropwise, the clear solution turns into precipitation within few minutes. The obtained product was repeatedly washed and dried at 50 °C ( ZnO‐NFs ) (Scheme , Path 2) …”

Section: Resultsmentioning

confidence: 99%

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Improved Photocatalytic Degradation of Organic Dyes by ZnO‐Nanoflowers

2016

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Recently, we reported one pot synthesis of ZnO nanoflowers (ZnO-NFs) by using asymmetric Zn(II) dimeric complex, [Zn (hmp-H) [hmp-H = 2-(2-hydroxymethyl)pyridine)] as a single molecular precursor at room temperature (RT). The prepared ZnO-NFs catalyst was systematically probed for its structural, morphological and functional properties. Our primary aim was to utilize ZnO-NFs to find a superior photocatalyst for the degradation of different dyes such as Methyl orange (MO), Congo red (CR), Chicago sky blue (CSB) and Eosin B (EO) which are commonly found in industrial waste and are major contributor to the river pollutant. In order to overcome this problem, we explored the photocatalytic performance of ZnO-NFs, which results in improved photocatalytic activity towards MO dye (15 mg/L, 99.46 %) compared to other dyes CR, CSB and EO. Based on the photocatalytic evaluations, ZnO-NFs could possess versatile photocatalytic properties for remediation of contaminated water.

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Section: Resultsmentioning

confidence: 99%

“…The two Zn(II) centers are present in hexa‐ and tetra‐coordinated environment. The complete structural aspect was discussed in our recent paper …”

Section: Resultsmentioning

confidence: 99%

“… Schematic diagram for the synthesis of A via Path 1 and for the synthesis of ZnO‐Nanoflowers ( ZnO‐NFs ) via Path 2 …”

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Improved Photocatalytic Degradation of Organic Dyes by ZnO‐Nanoflowers

2016

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“…Owing to their wide bandgap (3.37 eV) and varying morphological features, the ZnO nanostructures and other metal oxides have gained much attention in the field of fabrication of light‐emitting diodes (LEDs), piezoelectric devices and optoelectronic devices with remarkable optical, electronic, catalytic and sensing properties . So far the synthesis of ZnO involve hydro/solvo thermal, electrochemical, physical/chemical vapor deposition, pulsed laser deposition, sputtering, microwave‐assisted and template based approaches .…”

Section: Introductionmentioning

confidence: 99%

Binder Free Modification of Glassy Carbon Electrode by Employing Reduced Graphene Oxide/ZnO Composite for Voltammetric Determination of Certain Nitroaromatics

Mohammad¹,

Ahmad²,

Rajak³

et al. 2017

Electroanalysis

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Reduced Graphene oxide/ZnO nanoflowers (rGO/ZnO‐NFs) composite has been synthesized in‐situ using asymmetric Zn complex (1) as a single‐source molecular precursor (SSMP) with GO at 150 °C. The rGO/ZnO‐NFs composite was characterized by PXRD, UV‐vis, SEM, EDX mapping, TEM and SAED pattern to confirm its purity and morphology. The rGO/ZnO‐NFs composite shows uniform distribution of nanoflowers on graphene sheets. The modified glassy carbon electrode (GCE) was fabricated by drop wise layering of the rGO/ZnO‐NFs composite at the surface of the GCE without using binder. The binder free modified electrode (GCE‐rGO/ZnO) was explored for detection of nitroaromatics such as p‐nitro‐phenol (p‐NP), 2,4‐dinitrophenol (2,4‐DNP), 2,4‐dinitrotoluene (2,4‐DNT) and 2,4,6‐trinitrophenol (2,4,6‐TNP). The fabricated sensor showed remarkable response for the both toxicants and explosives. The LOD, sensitivity and linear range for the studied toxicants and explosives were found to be in a good range: p‐NP=0.93 μM, 240 μA mM−1 cm−2 and 0.2–0.9 mM; 2,4‐DNP=6.2 μM, 203 μA mM−1 cm−2 and 0.1–0.9 mM; 2,4‐DNT=10 μM, 371 μA mM−1 cm−2 and 0.2–0.9 mM; 2,4,6‐TNP=16 μM, 514 μA mM−1 cm−2 and 0.2–0.9 mM, respectively.

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