N.B. Singh’s research while affiliated with Sharda University and other places

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Publications (98)


Introduction XRD Analysis Result FTIR Spectrum Result Nanotechnology in wastewater treatment Importing Tables & Graphs Mechanism of Antibacterial Activity Antibacterial Activity "Antibacterial Activity of Graphene-based Zinc Oxide Nanocomposite using flower waste extract and its biological applications"
  • Poster
  • File available

December 2024

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2 Reads

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N B Singh

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Water pollution is a major global problem Sources of water pollution  Industrial waste  Agricultural waste  Household waste  Pharmaceutical waste  Underground storage leaks Effect of water pollution on the Environment  Death of aquatic organisms  Disruption of food-chains  Diseases  Destruction of ecosystem  Provide high-performance, affordable water and wastewater treatment solutions (Asgar and Mushtaq, 2023)  Nanomaterials are fabricated with features, such as high aspect ratio, reactivity, tunable pore volume, electrostatic, hydrophilic, and hydrophobic interactions, which are useful in adsorption, catalysis, sensing, etc. (Jain et.al., 2021) Types of nanomaterials used How it works?  Nasosorption  Nanofiltration  Catalysis  photocatalysis  Dendrimers  Zeolites  Metal nanoparticles  Carbonaceous nanomaterials  Polymeric nanocomposites Background:  Floral waste, a byproduct of the flower industry, is abundant and often overlooked as a valuable resource.  ZnO, GO, G-ZnO NCs a conductive polymer, has garnered attention for its diverse applications, including in the field of antibacterial nanocomposites.

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Biosensors based on nanoparticles for identifying harmful microorganisms
Nanomaterials in bacterial detection: current trends and future outlook

October 2024

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17 Reads

Zastita materijala

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N.B. Singh

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Amit Kumar Singh

Contamination by pathogenic bacteria represents a severe risk to public health and well-being. We outlined current approaches to detecting and sensing harmful bacteria by integrating recognition elements with nanomaterials (NMs) in this study. Nanomaterials have emerged as a transformative technology for bacterial detection due to their unique physicochemical properties, including high surface area, quantum effects, and enhanced reactivity. This review highlights the current trends in the application of various nanomaterials, such as gold nanoparticles, carbon nanotubes, and quantum dots, in the detection of bacterial pathogens. These materials enable the development of selective, and rapid detection methods through mechanisms like surface plasmon resonance, electrochemical sensing, and fluorescence. Furthermore, integrating nanomaterials with microfluidic devices and biosensors is discussed, showcasing advancements in point-of-care diagnostics. Challenges such as stability, reproducibility, and potential toxicity of nanomaterials are addressed, alongside regulatory considerations. The future outlook emphasizes the potential of emerging nanomaterials, such as graphene and metal-organic frameworks, to revolutionize bacterial detection. This review aims to enhance the scalability, cost-effectiveness, and environmental sustainability of these technologies, paving the way for widespread clinical and environmental applications.


Nano revolution: Exploring the frontiers of nanomaterials in science, technology, and society

August 2024

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66 Reads

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3 Citations

Nano-Structures & Nano-Objects

Nanotechnology has emerged as a transformative force, driving breakthroughs across a wide range of fields including materials science, electronics, medicine, agriculture, and energy. This review article discusses the multifaceted landscape of nanomaterials (NMs), highlighting their profound impact across various domains. From advancements in material science to significant shifts in healthcare and environmental remediation, nanotechnology has expanded the boundaries of what is possible. We explore the synthesis, properties, and applications of NMs, showcasing their potential to revolutionize energy storage, catalysis, and drug delivery. Additionally, the societal implications of nanotechnology, addressing ethical considerations, environmental concerns, and regulatory frameworks have been discussed. As nanotechnology continues to evolve, it becomes ever more crucial to highlight its opportunities and challenges to fully harness its potential. This review provides insights into the dynamic and evolving landscape of NMs, illuminating pathways for future research and innovation.


Efficient removal of crystal violet dye from water using zinc ferrite-polyaniline nanocomposites

May 2024

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67 Reads

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2 Citations

Nanomaterials are widely employed in wastewater treatment, among which nanoferrites and their composites hold significant prominence. This study adopts a green approach to synthesize zinc ferrite nanoparticles, subsequently integrating them with polyaniline (PANI) to fabricate the ZnFe2O4-PANI nanocomposite. Characterization of the prepared ZnFe2O4-PANI nanocomposite was conducted using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopic (SEM) techniques. Using Scherrer’s equation, the crystallite size of the synthesized zinc ferrite nanoparticles was found to be 17.67 nm. SEM micrographs of the ZnFe2O4-PANI nanocomposite revealed that in situ polymerization of ZnFe2O4 with polyaniline transforms the amorphous surface morphology of the polymer into a homogeneous nanoparticle structure. The adsorption of crystal violet (CV) dye onto the surface of the ZnFe2O4-PANI nanocomposite depends on pH, adsorbent dosage, temperature, concentration levels and duration. The Langmuir adsorption model fitted the data well, indicating adherence to a pseudo-second-order kinetic pattern. Thermodynamic values ΔG°, ΔH° and ΔS° indicated that the adsorption process occurred spontaneously. Advantages and disadvantages of the technique have also been highlighted. Mechanism of adsorption is discussed. From the obtained results, it is evident that the ZnFe2O4-PANI nanocomposite holds promise as a sorbent for the removal of dye from wastewater.


Bioremediation of Heavy Metals Using Microorganisms

January 2024

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53 Reads

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2 Citations

In recent years, heavy metals (HMs) obtained from different industrial processes pollute water, soil, and the environment to a great extent. Even trace amounts of HMs are a risk to human health and cause various types of diseases. Therefore, the removal of HMs from the environment is of utmost importance. Numerous methods are used to remove HMs but bioremediation technology based on microorganisms has become more popular due to its highly efficient, inexpensive, and environment-friendly nature. Different microorganisms such as fungi, algae, yeast and bacteria are found to be effective biosorbents. A variety of chemical groups, including phosphate, sulfate, amino, sulfhydryl, carbonyl, hydroxyl and carboxyl on the cell wall of microbes affect biosorption to a great extent. In this chapter, the use of different genetically engineered/modified microbial organisms for the efficient removal of toxic heavy metal elements is discussed.


Advanced Materials and Processing Techniques

June 2023

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162 Reads

Advanced materials and processing techniques are the backbone of the smart industry. The smart industry could not be run without a furnish of raw materials. Further, the raw materials could become advanced materials by employing good processing technology. Owing to this, new advanced materials exhibit compelling properties and applications in various fields. In the present chapter, we have provided an insight into the current development in the materials advanced materials comprising different fabrication methodologies and their incorporation with nanofillers, as well as their advanced processing techniques. Moreover, advanced materials’ applications have been emphasized in different fields, like tissue engineering, biomedical, agriculture sector, and pesticides.



Photocatalytic Degradation of Crystal Violet Dye in Aqueous Solution using ZnFe2O4-Cellulose Nanocomposite Catalyst

May 2023

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84 Reads

Asian Journal of Chemistry

The major issue in the modern area is the wastewater discharge, particularly the organic pigments from several industries, which creates various pernicious health hazards. As a result, synthesized zinc ferrites and cellulose nanocomposites are effective photocatalysts used for the detoxification of crystal violet dyes. The crystallite-size of synthesized zinc ferrite nanoparticle was confirmed from XRD by using Scherrer equation to be 25.5 nm. The elemental composition of the zinc ferrite-cellulose nanocomposite was clearly shown by the EDS spectrum. Based on the FESEM micrographs, the zinc ferrite-cellulose nanocomposite morphology revealed a smooth surface with microspheres measuring 500 nm in size. The ZnFe2O4-cellulose nanocomposite demonstrated 92% photocatalytic efficiency for the removal of crystal violet dye at pH 6 after 160 min of sunlight irradiation with a catalyst dosage of 50 mg and an initial dye concentration of 10 ppm. The pseudo-second-order kinetic model was found to be consistent for the photocatalytic process. Finally, the newly developed photocatalyst (ZnFe2O4-cellulose nanocomposites) should be considered better for dye decontamination in wastewater


Emerging Trends of Nanotechnology in Cosmetics

May 2023

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245 Reads

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2 Citations

Cosmetics attract most age groups from teenagers to old age. Cosmetic goods now contain a variety of nanoparticle and nanomaterial types. Nano cosmeceuticals have changed the era of cosmetics as they have advanced delivery mechanisms with task specifications. They are used in nail, hair, lip, and skin care products by cosmetic giants including Estee Lauder, L’oreal, Nivea, Zelens, and Derma Swiss, etc., and have patented the use of dozens of "nanosome particles.” The global market for cosmetics using nanotechnology is worth millions of dollars and increasing at 7.14% annually. Liposomes, niosomes,nanostructured lipid carriers, solid lipid nanoparticles, gold nanoparticles, nanoemulsions, and nanosomes are novel nanocarriers that are now used in a variety of cosmeceuticals for drug delivery to achieve site specification, improved stability, biocompatibility, extended action, and increased drug-loading capacity. In this chapter use of various nanocarriers in cosmetic applications with their safety concerns will be discussed.


Citations (53)


... Higherresolution laser scanning confocal microscopes are necessary to fully visualize the three-dimensional structures of intracellular membranes, alongside specialized imaging techniques to distinguish between bacterial cells and nanoparticles at the nanoscale. 156 Secondly, existing in vitro chronic infection models are suboptimal. While numerous studies have explored the inhibitory mechanisms of nanoparticles against common pathogens like Staphylococcus aureus and Pseudomonas aeruginosa, they often utilize single-strain biofilm models that overlook bacterial interactions. ...

Reference:

How Nanoparticles Help in Combating Chronic Wound Biofilms Infection?
Nano revolution: Exploring the frontiers of nanomaterials in science, technology, and society
  • Citing Article
  • August 2024

Nano-Structures & Nano-Objects

... Consequently, the need for clean water rises in tandem with the population increase. The primary objective of water treatment is typically centered around eliminating or breaking down organic pollutants, heavy metals, and microorganisms [97][98][99]. Numerous scientists have devised various Zn-based NMs materials specifically for water treatment in order to obtain purified water for practical purposes. ZnO nanoparticles, synthesized from zerumbone as a green reducing agent, were utilized by Azizi et al. [100] to investigate the adsorption of Pb (II) ions from an aqueous solution. ...

Bioremediation of Heavy Metals Using Microorganisms
  • Citing Chapter
  • January 2024

... Currently, different conventional methods are used to remove methylene blue from water, such as membrane filtration, adsorption, oxidation, and biological treatment (Cheng et al., 2020;Parakala et al., 2019;Teixeira et al., 2022;Mohrazi et al., 2023;Singh et al., 2023). These methods are used in wastewater treatment to alleviate the environmental impact of methylene blue. ...

Methylene Blue Dye Removal from Water by Neem Leaf (Azadirachta indica) Adsorbent
  • Citing Article
  • February 2023

Macromolecular Symposia

... In textile-based industries, nanomaterials also provide anti-wrinkle, water repellence and anti-microbial properties for clothing. Nanomaterials can be used to make products such as anti-graffitic coatings for walls, self-cleaning windows and crackresistant paints which are rustproof, stronger and fire-resistant [7]. ...

Emerging Applications of Nanomaterials

... Nature serves as a vast "Biolaboratory" con- taining plants, bacteria, algae, fungi, yeast, and other organisms that consist of biomolecules [15][16][17][18]. The naturally occurring biomolecules or phytochemicals have been strongly recognized for their active contribution for the fabrication of NCs [19][20][21][22][23][24]. Off course, an extracted phytochemicals played vital role during the fabrication of NCs, the phytochemicals significantly enhance the reduction rate, tiniest size, scaffold morphology, and stabilize process by acting as surfactants, structure-directors, capping, stabilizing and reducing agents [25][26][27][28]. ...

Green Nanomaterials: A Road Map to Safe Nanotechnology
  • Citing Article
  • January 2023

Current Pharmaceutical Biotechnology

... Due to the exceptional thermal stability of CFA, it is also employed as an adsorption catalytic material. Furthermore, the physicochemical properties of CFA can be significantly enhanced through various common modifications such as mechanical milling [28], acid modification [29], alkali modification [30], salt modification [31], and so forth. Wang et al. employed sulfuric acid treatment on CFA to augment its specific surface area, thereby enhancing the adsorption efficiency of ammonia in waste gas. ...

Coal fly ash: an emerging material for water remediation

International Journal of Coal Science & Technology

... Their utilization stems from their potential to make conventional energy generation more environmentally friendly, efficient, and sustainable. Surfactants exhibit impressive functional diversity, acting as emulsifiers (forming of emulsion), stabilizers, promoters, and collectors (absorbing on the mineral surface) in coal technologies (Chang et al. 2020;Guin and Singh 2023). Biosurfactants produced by various microorganisms offer great promise in the coal industry due to reduced adverse environmental impacts and improved utilization safety because of their biodegradability, nontoxicity, stability, and specific activity (Bhadra et al. 2023;Maddela et al. 2023;Oyetunji et al. 2023). ...

Applications of biosurfactant as solubilizers and wetting agents
  • Citing Chapter
  • January 2023

... PAC eliminates the harmful dyes more successfully than GAC. Traditionally, high-carbon content substances in a range of physical forms, such as coal, wood, shells of coconuts, sawdust, etc, are used to produce activated carbon [25]. Researchers are currently employing industrial and agricultural wastes to create activated carbon, though, in an effort to make the procedure more affordable. ...

Carbon Materials for Dye Removal from Wastewater
  • Citing Chapter
  • August 2022

... Numerous biological sources can be utilized for the production of nanoparticles, such as bacteria (Subbaiyan et al., 2023), fungi (Yadav et al., 2023), leaves (Khalil et al., 2023), flowers (Ranjani and Hemalatha, 2022), oil (Kumar et al., 2018), seeds (Ashraf et al., 2023), fruits (Abdoon et al., 2023), bark (Ogundare et al., 2023), root (Tripathi et al., 2022) and biomass (Govarthanan et al., 2016;Alfuraydi et al., 2019). Among them, the biosynthesis of NPs using vegetable oils has gained significant attention due to its environmentally friendly and non-toxic nature. ...

Green synthesis of iron oxide nanoparticles using Amla seed for methylene blue dye removal from water
  • Citing Article
  • August 2022

Materials Today Proceedings