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Sumit Kumar Sonkar
Malaviya National Institute of Technology, Jaipur
50Publications
17H-index
1,281Citations
Publications 50
Newest
#1Anshu Bhati (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 9
#2Satyesh Raj Anand (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 2
Last.Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
view all 5 authors...
Cr(VI) is a known toxic and non-biodegradable pollutant that results from multiple industrial processes, and can cause significant environmental damage if it is not removed from wastewater. However, it can be reduced to Cr(III), which is less toxic and can be readily precipitated out and removed. Here, a fast and facile single-step technique is reported for the synthesis of nitrogen–phosphorus doped fluorescent carbon dots (NP-CD) using a domestic microwave, as a potential photocatalytic materia...
#1Gunture (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 2
#2Anupriya Singh (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 8
Last.Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
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Currently, the air and water pollutions are presenting the most serious global concerns. Despite the well known tremendous efforts, it could be a promising sustainability if the black carbon (BC) soot can be utilized for the practical and sustainable applications. For this, the almost complete aqueous phase photodegradation of the three well-known organic pollutant dyes as crystal violet (CV); rhodamine B (RhB); methylene blue (MB) and their mixture (CV + RhB + MB), by using water-soluble graphe...
#1Deepika Saini (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 1
#2Ruchi Aggarwal (MNIT: Malaviya National Institute of Technology, Jaipur)
Last.Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
view all 4 authors...
Abstract A simpler and sustainable approach for the isolation of self-doped iron-oxide nano-carbons from the waste black toner ink as a “freely available waste carbon black precursor is presented here.” The residual waste printer ink is usually known as the black toner ink and generally discarded as waste. In the simpler process, the waste black toner ink has been carbonized in a muffle furnace at ~600 °C and on further oxidation converted to its self-doped functionalized version as functionaliz...
#1Satyesh Raj Anand (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 2
#2Ruchi Aggarwal (MNIT: Malaviya National Institute of Technology, Jaipur)
Last.Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
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Abstract The minimally explored form of nano-carbon known as carbon nano-rods (CNR) has been used for removal of toxic Cr(VI) from different types of wastewater samples under the illumination of natural sunlight. The CNR was functionalized with monomeric amine molecule named as 2, 2′-(ethylenedioxy)bis(ethylamine) (EDA) to synthesize its amine functionalized water soluble version named as functionalized soluble carbon nano-rods (f-CNR). f-CNR were dialyzed to achieve most functionalized portion ...
#1Gouri Sankar Das (Gachon University)H-Index: 1
#2Sabyasachi Sarkar (Indian Institute of Engineering Science and Technology, Shibpur)H-Index: 27
Last.Tae-Young Kim (Gachon University)H-Index: 18
view all 7 authors...
A new discrete bis-dithiolene complex, [PPh4]2[Zn(DMED)2] (1; DMED = 1,2-dicarbomethoxy-1,2-dithiolate) with sulfur-based radical character was synthesized and structurally characterized. Complex 1 is stable and exhibits a square planar geometry around the zinc metal. 1 forms nanospheres through a one-pot water-induced self-assembly in a mixture of solvents (acetonitrile–water). These nanospheres were further decorated with water-soluble carbon nanotubes (wsCNTs) through hydrogen bonding between...
#1Satyesh Raj Anand (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 2
#2Anshu Bhati (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 9
Last.Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
view all 7 authors...
The present finding describes an efficient facile approach for the fabrication of nitrogen-doped carbon dots (N-CDs) as a “fluorescent nanoswitch”. Highly fluorescent blue-light-emitting N-CDs have been synthesized via a simpler hydrothermal method using 2,2′-(ethylenedioxy)-bis(ethylamine) and malic acid as the precursors. N-CDs showed excitation-dependent and pH-independent emission along with a quantum yield of ∼25%. The blue fluorescent emission of N-CDs has been selectively “turned off” (qu...
#1Ruchi Aggarwal (MNIT: Malaviya National Institute of Technology, Jaipur)
#2Satyesh Raj Anand (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 2
Last.Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
view all 0 authors...
#1Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
#2Sabyasachi Sarkar (Indian Institute of Engineering Science and Technology, Shibpur)H-Index: 27
Abstract The discovery of fullerenes triggered the exploration of carbon in the nanodomain, leading to the characterization of diverse versions of nanocarbons ranging from carbon nanotubes, carbon nanoonions, carbon dots, and graphene in different shapes and sizes. The hydrophobic property of carbon in these materials has been tampered by oxidative derivatization introducing hydrophilic groups in the periphery or the surface of these nanocarbons to render these dispersible or soluble in water. S...
#1Neetu Chauhan (MNIT: Malaviya National Institute of Technology, Jaipur)
#2Satyesh Raj Anand (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 2
Last.Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
view all 7 authors...
Herein, we report a simpler functionalization of the CNR by the amine (2,2′-(ethylenedioxy)-bis(ethylamine)) (H2NCH2CH2OCH2CH2OCH2CH2NH2 (EDA)) molecules as a surface passivating agent to achieve soluble functionalized carbon nano-rods (f-CNR). The surface-functionalized fluorescent f-CNR exhibited the quantum yield value of ∼16% and were used as a fluorescent probe for the selective detection of the Cr(VI) and Fe(III) ions in a homogeneous aqueous phase based on fluorescence quenching. In parti...
#1Anshu Bhati (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 9
#2Satyesh Raj Anand (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 2
Last.Sumit Kumar Sonkar (MNIT: Malaviya National Institute of Technology, Jaipur)H-Index: 17
view all 6 authors...
A straightforward and simpler use of an age-old technique was utilized for the fabrication of “red-emitting magnesium-nitrogen-embedded carbon dots” (r-Mg-N-CD) from the leaves extract of Bougainvillea plant as a natural source of carbon. This technique is similar to the solvent-based technique, which is used for the extraction of fragrances and essential oils from flowers and leaves. The as-derived leaves extract was further carbonized using a simple domestic microwave to obtain the small-sized...
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