Dr. Sumit Ringwal | HNB Garhwal University (original) (raw)

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Papers by Dr. Sumit Ringwal

Research paper thumbnail of Determination of antioxidant and catalytic activity of bio-synthesized Ag-MgO nanocomposite from peels extract of Citrus aurantium in the rapid treatment of wastewater management

Inorganic Chemistry Communications, Mar 1, 2022

Research paper thumbnail of Photo-Catalytic Degradation of Toxic Dyes by Silver Nano Particles Synthesized From Peels Extracts of Citrus medic at Through Green Method

Universities Journal of Phytochemistry and Ayurvedic Heights, Dec 6, 2021

-Dyes are chemical compounds which are used to convey colour to various materials, but during the... more -Dyes are chemical compounds which are used to convey colour to various materials, but during the processing and operation it produces toxics and hazardous side product which is very harmful to ecosystem and biodiversity. Researchers are developing various methods to degrade such toxic dyes and use of noble metal nano particle as a catalyst is emerging field of interest among scientific community. In this research article we had scanned our previously synthesized silver nanoparticle from Citrus medicapeels extracts; Synthesis and characterization were previously reported by authors.SynthesizedAgNPs has excellent photo-catalytic potential against various toxic dyes like Methylene blue, Rose bengal, Acridine Orange, Methyl Orange. Our nano-catalyst methylene blue nearly 52.15% in 5 hours while in absence of nano-catalyst dye degrades nearly32.85%. It is also capable of degrading acridine orange study shows it degrade Acridine orange dye 58.74% in just 4 hours and rose bengal dye 59.57 % followed by 4 hours of Continuous UV absorption. It also degrades methyl orange dye nearly 52% in 10 hours of solar irradiation. Synthesized AgNPs can be used as photo-catalyst for degrading toxic dyes.

Research paper thumbnail of Citrus Medica Mediated Ag Doped Mgo Nanocomposites as Green Adsorbent and its Catalytic Performance in the Rapid Treatment of Water Contaminants

Social Science Research Network, 2022

Research paper thumbnail of Z-Scheme Heterojunction Photocatalyst Potential of TiO2 Implanted with ZnO for Wastewater Treatment

Research paper thumbnail of Photo-Catalytic Degradation of Toxic Dyes by Silver Nano Particles Synthesized From Peels Extracts of Citrus medic at Through Green Method

Universities' Journal of Phytochemistry and Ayurvedic Heights

-Dyes are chemical compounds which are used to convey colour to various materials, but during the... more -Dyes are chemical compounds which are used to convey colour to various materials, but during the processing and operation it produces toxics and hazardous side product which is very harmful to ecosystem and biodiversity. Researchers are developing various methods to degrade such toxic dyes and use of noble metal nano particle as a catalyst is emerging field of interest among scientific community. In this research article we had scanned our previously synthesized silver nanoparticle from Citrus medicapeels extracts; Synthesis and characterization were previously reported by authors.SynthesizedAgNPs has excellent photo-catalytic potential against various toxic dyes like Methylene blue, Rose bengal, Acridine Orange, Methyl Orange. Our nano-catalyst methylene blue nearly 52.15% in 5 hours while in absence of nano-catalyst dye degrades nearly32.85%. It is also capable of degrading acridine orange study shows it degrade Acridine orange dye 58.74% in just 4 hours and rose bengal dye 59.57 % followed by 4 hours of Continuous UV absorption. It also degrades methyl orange dye nearly 52% in 10 hours of solar irradiation. Synthesized AgNPs can be used as photo-catalyst for degrading toxic dyes.

Research paper thumbnail of Determination of antioxidant and catalytic activity of bio-synthesized Ag-MgO nanocomposite from peels extract of Citrus aurantium in the rapid treatment of wastewater management

Inorganic Chemistry Communications, 2022

Research paper thumbnail of Evaluation of Antioxidant Activity of Synthesized Silver Nanoparticles from Citrus Aurantium Peels Extract by Using the Green Method

Journal of Mountain Research, 2021

The substance which avoids oxidant of easily oxidizing substance even at low concentration is cal... more The substance which avoids oxidant of easily oxidizing substance even at low concentration is called antioxidant when antioxidant reacts with reactive oxygen species (ROS) or reactive nitrogen species (RNS) they often convert themself into antioxidant radical. Although such a radical has a reduced ability to react with imperative cellular targets, it can still cause damage. To decrease reactivity and reduction potential further down, the ‘antioxidant radical' react with another antioxidant and this reaction continues in a stepwise manner until antioxidant radical’ is no longer damage the cells like lipids, protein, DNA, and other important cellular molecules. In this research article, we had scanned our previously synthesized silver nanoparticles from Citrus aurantium peels extracts; Synthesis and characterization part of the research work is already in communication we are extending our research work on previously synthesized silver nanoparticles. In this research article, we h...

Research paper thumbnail of Photo-catalytic degradation of different toxic dyes using silver nanoparticles as photo-catalyst, mediated via Citrus aurantium peels extract

Journal of the Indian Chemical Society, 2021

Research paper thumbnail of A Hybrid FDTD-LUT Algorithm and Simulator for Electromagnetic Analyzing in Digital Integrated Circuits

2021 6th International Conference on Integrated Circuits and Microsystems (ICICM), 2021

In this paper, a hybrid simulation algorithm called FDTD-LUT, which bases on the finite differenc... more In this paper, a hybrid simulation algorithm called FDTD-LUT, which bases on the finite difference time-domain (FDTD) algorithm and Look-up table (LUT) method, is proposed for analyzing the electromagnetic field of digital integrated circuits. Moreover, an electromagnetic field simulator Hybrid Electromagnetic Simulator for Integrated Circuit (HESIC) is developed by using this algorithm, which can be used for field circuit co-simulation of active-passive hybrid structure. The correctness of the algorithm is verified by comparing the simulation result of the H-tree clock distribution network (CDN) structure with the actual measured data of the H-tree CDN structure.

Research paper thumbnail of Review on Green Synthesized Nanocomposites and Their Biological Activities

Journal of Mountain Research, 2021

In this paper, we reviewed the present status of synthesis of nano structured materials for techn... more In this paper, we reviewed the present status of synthesis of nano structured materials for technological development as bimetallic, trimetallic and various organic, inorganic polymers nanocomposites in the field of nanosciences. Nanocomposites play an important role in the field of sciences, engineering and industries due to their high catalytic power, high optical, electrical and mechanical properties, which can be very useful in the field of biosensors, nano medicines and many more as social welfare factor. There are many techniques used for the preparation of nanocomposites. Among them, green method is commonly used technique for the synthesis of nanomaterials which is cost-effective, eco-friendly and less hazardous materials for the environment. Here we attempt to present an elaborate work done in the field of nanocomposites dwelling upon their advantages, challenges and future prospects.

Research paper thumbnail of Investigation of Catalytic Property of Plant Mediated Silver Nanoparticles as Degradation of Toxic Dyes in Water

Journal of Mountain Research, 2021

Nowadays, silver nano-compounds mediated by plant materials are widely used material in daily lif... more Nowadays, silver nano-compounds mediated by plant materials are widely used material in daily life chemistry as well as across the industries, medical, electronics, ceramics, and in all research fields, because it has some specific characteristics such as non-toxic, inexpensive, nature-friendly, heat resistant, catalytic activity, high electric conductivity and so on. In the present work we reported the photo-catalytic dye degradation of green synthesized silver nanoparticles of size 43.75 nm by using the flowers extract of Rhododendron campanulatum tree. Synthesized AgNPs have worked as a strong nano-catalyst for the degradation of toxic dyes such as malachite green (MG), and acridine orange (AO). As a catalyst, synthesized AgNPs degraded the malachite green (MG) dye 47.22 % within 90 min, and acridine orange (AO) dye 66.16 % in 4 h of solar irradiation, while in the absence of nanocatalyst, MG and AO dye degraded upto 22.13 % in 90 min and 46.75 % in 4 h of photo-irradiation respe...

Research paper thumbnail of Synthesis of Nanostructured Materials Via Green and Sol–Gel Methods: A Review

2D Functional Nanomaterials

Research paper thumbnail of Antimicrobial Activity of AgNPs Synthesized Via Green Approach by Using Flowers of Bistortamacrophylla herb of Tungnath Himalaya Region

Journal of Mountain Research

Green synthesis of nano structured materials isan emerging field for the researchers working in t... more Green synthesis of nano structured materials isan emerging field for the researchers working in the field of chemical, physical, life sciences, engineering and medical sciences, for the welfare of society.In the present study green synthesis of silver nanoparticles (AgNPs)was performed by using flowers of Bistorta macrophylla, a medicinal herb of polygonaceae family of Garhwal Himalayas. For green synthesis of AgNPs, the aqueous flowers extract and the aqueous solution of AgNO3(of 5 milli molar concentration) were well mixed in ratios of 1:9.The metal ion present in the solution reduced Ag+1 to Ag0 within three to four days, which was characterized by color change observation, UV, SEM-EDX, XRD, TEM etc. The absorption maxima of AgNPs of Bistorta macrophylla flowers (BMF) was obtained in the range of 451– 454nm for 5mM concentration of AgNO3, and the SEM images revealed that the average clustersize of synthesized Ag nanoparticles from 5BMF1:9ranges from 20 μm– 23μm, while the EDX ana...

Research paper thumbnail of Determination of antioxidant and catalytic activity of bio-synthesized Ag-MgO nanocomposite from peels extract of Citrus aurantium in the rapid treatment of wastewater management

Inorganic Chemistry Communications, Mar 1, 2022

Research paper thumbnail of Photo-Catalytic Degradation of Toxic Dyes by Silver Nano Particles Synthesized From Peels Extracts of Citrus medic at Through Green Method

Universities Journal of Phytochemistry and Ayurvedic Heights, Dec 6, 2021

-Dyes are chemical compounds which are used to convey colour to various materials, but during the... more -Dyes are chemical compounds which are used to convey colour to various materials, but during the processing and operation it produces toxics and hazardous side product which is very harmful to ecosystem and biodiversity. Researchers are developing various methods to degrade such toxic dyes and use of noble metal nano particle as a catalyst is emerging field of interest among scientific community. In this research article we had scanned our previously synthesized silver nanoparticle from Citrus medicapeels extracts; Synthesis and characterization were previously reported by authors.SynthesizedAgNPs has excellent photo-catalytic potential against various toxic dyes like Methylene blue, Rose bengal, Acridine Orange, Methyl Orange. Our nano-catalyst methylene blue nearly 52.15% in 5 hours while in absence of nano-catalyst dye degrades nearly32.85%. It is also capable of degrading acridine orange study shows it degrade Acridine orange dye 58.74% in just 4 hours and rose bengal dye 59.57 % followed by 4 hours of Continuous UV absorption. It also degrades methyl orange dye nearly 52% in 10 hours of solar irradiation. Synthesized AgNPs can be used as photo-catalyst for degrading toxic dyes.

Research paper thumbnail of Citrus Medica Mediated Ag Doped Mgo Nanocomposites as Green Adsorbent and its Catalytic Performance in the Rapid Treatment of Water Contaminants

Social Science Research Network, 2022

Research paper thumbnail of Z-Scheme Heterojunction Photocatalyst Potential of TiO2 Implanted with ZnO for Wastewater Treatment

Research paper thumbnail of Photo-Catalytic Degradation of Toxic Dyes by Silver Nano Particles Synthesized From Peels Extracts of Citrus medic at Through Green Method

Universities' Journal of Phytochemistry and Ayurvedic Heights

-Dyes are chemical compounds which are used to convey colour to various materials, but during the... more -Dyes are chemical compounds which are used to convey colour to various materials, but during the processing and operation it produces toxics and hazardous side product which is very harmful to ecosystem and biodiversity. Researchers are developing various methods to degrade such toxic dyes and use of noble metal nano particle as a catalyst is emerging field of interest among scientific community. In this research article we had scanned our previously synthesized silver nanoparticle from Citrus medicapeels extracts; Synthesis and characterization were previously reported by authors.SynthesizedAgNPs has excellent photo-catalytic potential against various toxic dyes like Methylene blue, Rose bengal, Acridine Orange, Methyl Orange. Our nano-catalyst methylene blue nearly 52.15% in 5 hours while in absence of nano-catalyst dye degrades nearly32.85%. It is also capable of degrading acridine orange study shows it degrade Acridine orange dye 58.74% in just 4 hours and rose bengal dye 59.57 % followed by 4 hours of Continuous UV absorption. It also degrades methyl orange dye nearly 52% in 10 hours of solar irradiation. Synthesized AgNPs can be used as photo-catalyst for degrading toxic dyes.

Research paper thumbnail of Determination of antioxidant and catalytic activity of bio-synthesized Ag-MgO nanocomposite from peels extract of Citrus aurantium in the rapid treatment of wastewater management

Inorganic Chemistry Communications, 2022

Research paper thumbnail of Evaluation of Antioxidant Activity of Synthesized Silver Nanoparticles from Citrus Aurantium Peels Extract by Using the Green Method

Journal of Mountain Research, 2021

The substance which avoids oxidant of easily oxidizing substance even at low concentration is cal... more The substance which avoids oxidant of easily oxidizing substance even at low concentration is called antioxidant when antioxidant reacts with reactive oxygen species (ROS) or reactive nitrogen species (RNS) they often convert themself into antioxidant radical. Although such a radical has a reduced ability to react with imperative cellular targets, it can still cause damage. To decrease reactivity and reduction potential further down, the ‘antioxidant radical' react with another antioxidant and this reaction continues in a stepwise manner until antioxidant radical’ is no longer damage the cells like lipids, protein, DNA, and other important cellular molecules. In this research article, we had scanned our previously synthesized silver nanoparticles from Citrus aurantium peels extracts; Synthesis and characterization part of the research work is already in communication we are extending our research work on previously synthesized silver nanoparticles. In this research article, we h...

Research paper thumbnail of Photo-catalytic degradation of different toxic dyes using silver nanoparticles as photo-catalyst, mediated via Citrus aurantium peels extract

Journal of the Indian Chemical Society, 2021

Research paper thumbnail of A Hybrid FDTD-LUT Algorithm and Simulator for Electromagnetic Analyzing in Digital Integrated Circuits

2021 6th International Conference on Integrated Circuits and Microsystems (ICICM), 2021

In this paper, a hybrid simulation algorithm called FDTD-LUT, which bases on the finite differenc... more In this paper, a hybrid simulation algorithm called FDTD-LUT, which bases on the finite difference time-domain (FDTD) algorithm and Look-up table (LUT) method, is proposed for analyzing the electromagnetic field of digital integrated circuits. Moreover, an electromagnetic field simulator Hybrid Electromagnetic Simulator for Integrated Circuit (HESIC) is developed by using this algorithm, which can be used for field circuit co-simulation of active-passive hybrid structure. The correctness of the algorithm is verified by comparing the simulation result of the H-tree clock distribution network (CDN) structure with the actual measured data of the H-tree CDN structure.

Research paper thumbnail of Review on Green Synthesized Nanocomposites and Their Biological Activities

Journal of Mountain Research, 2021

In this paper, we reviewed the present status of synthesis of nano structured materials for techn... more In this paper, we reviewed the present status of synthesis of nano structured materials for technological development as bimetallic, trimetallic and various organic, inorganic polymers nanocomposites in the field of nanosciences. Nanocomposites play an important role in the field of sciences, engineering and industries due to their high catalytic power, high optical, electrical and mechanical properties, which can be very useful in the field of biosensors, nano medicines and many more as social welfare factor. There are many techniques used for the preparation of nanocomposites. Among them, green method is commonly used technique for the synthesis of nanomaterials which is cost-effective, eco-friendly and less hazardous materials for the environment. Here we attempt to present an elaborate work done in the field of nanocomposites dwelling upon their advantages, challenges and future prospects.

Research paper thumbnail of Investigation of Catalytic Property of Plant Mediated Silver Nanoparticles as Degradation of Toxic Dyes in Water

Journal of Mountain Research, 2021

Nowadays, silver nano-compounds mediated by plant materials are widely used material in daily lif... more Nowadays, silver nano-compounds mediated by plant materials are widely used material in daily life chemistry as well as across the industries, medical, electronics, ceramics, and in all research fields, because it has some specific characteristics such as non-toxic, inexpensive, nature-friendly, heat resistant, catalytic activity, high electric conductivity and so on. In the present work we reported the photo-catalytic dye degradation of green synthesized silver nanoparticles of size 43.75 nm by using the flowers extract of Rhododendron campanulatum tree. Synthesized AgNPs have worked as a strong nano-catalyst for the degradation of toxic dyes such as malachite green (MG), and acridine orange (AO). As a catalyst, synthesized AgNPs degraded the malachite green (MG) dye 47.22 % within 90 min, and acridine orange (AO) dye 66.16 % in 4 h of solar irradiation, while in the absence of nanocatalyst, MG and AO dye degraded upto 22.13 % in 90 min and 46.75 % in 4 h of photo-irradiation respe...

Research paper thumbnail of Synthesis of Nanostructured Materials Via Green and Sol–Gel Methods: A Review

2D Functional Nanomaterials

Research paper thumbnail of Antimicrobial Activity of AgNPs Synthesized Via Green Approach by Using Flowers of Bistortamacrophylla herb of Tungnath Himalaya Region

Journal of Mountain Research

Green synthesis of nano structured materials isan emerging field for the researchers working in t... more Green synthesis of nano structured materials isan emerging field for the researchers working in the field of chemical, physical, life sciences, engineering and medical sciences, for the welfare of society.In the present study green synthesis of silver nanoparticles (AgNPs)was performed by using flowers of Bistorta macrophylla, a medicinal herb of polygonaceae family of Garhwal Himalayas. For green synthesis of AgNPs, the aqueous flowers extract and the aqueous solution of AgNO3(of 5 milli molar concentration) were well mixed in ratios of 1:9.The metal ion present in the solution reduced Ag+1 to Ag0 within three to four days, which was characterized by color change observation, UV, SEM-EDX, XRD, TEM etc. The absorption maxima of AgNPs of Bistorta macrophylla flowers (BMF) was obtained in the range of 451– 454nm for 5mM concentration of AgNO3, and the SEM images revealed that the average clustersize of synthesized Ag nanoparticles from 5BMF1:9ranges from 20 μm– 23μm, while the EDX ana...