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Dan Bahadur Pal

Bio: Dan Bahadur Pal is an academic researcher from Birla Institute of Technology, Mesra. The author has contributed to research in topics: Biomass (ecology) & Chemistry. The author has an hindex of 12, co-authored 56 publications receiving 701 citations. Previous affiliations of Dan Bahadur Pal include Indian Institutes of Technology & Birla Institute of Technology and Science.


Papers
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TL;DR: The bio-molecules from various plant components and microbial species have been used as potential agents for the synthesis of silver nanoparticles (AgNPs) as discussed by the authors, and more than 100 different biological sources for synthesizing AgNPs are reported in the past decade by various authors.
Abstract: The bio-molecules from various plant components and microbial species have been used as potential agents for the synthesis of silver nanoparticles (AgNPs). In spite of a wide range of bio-molecules assisting in the process, synthesizing stable and widely applicable AgNPs by many researchers still poses a considerable challenge to the researchers. The biological agents for synthesizing AgNPs cover compounds produced naturally in microbes and plants. More than 100 different biological sources for synthesizing AgNPs are reported in the past decade by various authors. Reaction parameters under which the AgNPs were being synthesized hold prominent impact on their size, shape and application. Available published information on AgNPs synthesis, effects of various parameters, characterization techniques, properties and their application are summarised and critically discussed in this review.

338 citations

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TL;DR: A review of the evolution of WGS reaction catalysts can be found in this article, with focus on those that are currently being investigated for better performances, including nano-structured catalysts.
Abstract: Human beings have been using fossil fuels for their energy needs since long. Reducing availability of these non-renewable energy sources due to increasing consumption and resultant adverse effects on the environment has led researchers to focus on renewable and cleaner energy alternatives. Hydrogen is one such promising option which can serve as a renewable and cleaner alternative to conventional fossil fuels. Water-gas shift (WGS) reaction is currently widely employed to produce hydrogen from fossil carbonaceous as well as renewable biomass feed-stocks. WGS reaction involves reaction between CO and water over a suitable catalyst to enrich the gaseous mixture with H2. Traditionally, iron-chromium (Fe-Cr) and copper-zinc (Cu-Zn) catalysts have been used to facilitate the reaction at high and low temperatures, respectively. But over the years, WGS reaction catalyst technology has advanced dramatically and has been suitably modified to assist the reaction even in the medium temperature range and achieve higher CO conversion. Most of the current research is focused on ceria (CeO2) based WGS catalysts because of their unique favorable properties. Furthermore, there have been an ever-increasing number of recent studies which deal with fabricating nano-structured catalysts for WGS reaction because of the advantages offered by nano-materials over conventional materials. This review gives a progressive account of the evolution of WGS catalysts over the years with focus on those that are currently being investigated for better performances.

215 citations

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TL;DR: A review of the most recent developments in the use of biological based techniques to remove dyes and heavy metals from wastewater is presented in this article, where various microorganisms such as algae, bacteria, fungi and enzymes are depicted in detail.

114 citations

Journal ArticleDOI
TL;DR: In this paper, a review of the literature available in this field is presented, and the toxic effects of petrochemical waste and various physical and chemical processes, followed by elaborate biological processes available for PETROchemical waste degradation.
Abstract: Various industries release harmful petrochemical contaminants into the environment. To treat these petrochemical contaminants at source, different physical, chemical, and biological methods have been proposed and applied worldwide. However, physical and chemical methods have their own advantages and limitations; in this review, we majorly focused on the biodegradation of petrochemical wastes. First, a background study on the literature available in this field is presented. Second is a review of the toxic effects of petrochemical waste and various physical and chemical processes, followed by elaborate biological processes available for petrochemical waste degradation. Further, different aspects of bioremediation, such as modes, factors, limitations, and future perspectives are critically reviewed and presented. It was found that most of the studies performed on bioremediation of petrochemical waste employed bacteria for the degradation purpose. Some studies also made use of algae, fungi, yeast, gen...

81 citations

Journal ArticleDOI
TL;DR: In this article, the advancement of bio-hydrogen technology as a development of new sustainable and environmentally friendly energy technologies was examined in this paper, where key chemical derivatives of biomass such as alcohols, glycerol, methane-based reforming for hydrogen generation was briefly addressed.

57 citations


Cited by
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01 Jan 1912

1,225 citations

Journal ArticleDOI
TL;DR: This review begins by introducing SAAs and describes how model systems and nanoparticle catalysts can be prepared and characterized before concluding with a description of the general properties of this new class of heterogeneous catalysts.
Abstract: Single-atom alloys (SAAs) play an increasingly significant role in the field of single-site catalysis and are typically composed of catalytically active elements atomically dispersed in more inert and catalytically selective host metals SAAs have been shown to catalyze a range of industrially important reactions in electro-, photo-, and thermal catalysis studies Due to the unique geometry of SAAs, the location of the transition state and the binding site of reaction intermediates are often decoupled, which can enable both facile dissociation of reactants and weak binding of intermediates, two key factors for efficient and selective catalysis Often, this results in deviations from transition metal scaling relationships that limit conventional catalysts SAAs also offer reduced susceptibility to CO poisoning, cost savings from reduced precious metal usage, opportunities for bifunctional mechanisms via spillover, and higher resistance to deactivation by coking that plagues many industrial catalysts In this review, we begin by introducing SAAs and describe how model systems and nanoparticle catalysts can be prepared and characterized We then review all available SAA literature on a per reaction basis before concluding with a description of the general properties of this new class of heterogeneous catalysts and presenting opportunities for future research and development

442 citations

01 Jan 2014
TL;DR: In this paper, a review on modern strategies used for the management of water, pesticides, limitations in the use of chemical pesticides and potential of nano-materials in sustainable agriculture management as modern approaches of nanotechnology is presented.
Abstract: Nanotechnology is a promising field of interdisciplinary research. It opens up a wide array of opportunities in various fields like medicine, pharmaceuticals, electronics and agriculture. The potential uses and benefits of nanotechnology are enormous. The current global population is nearly 7 */billion with 50% living in Asia. A large proportion of those living in developing countries face daily food shortages as a result of environmental impacts or political instability, while in the developed world there is surplus of food. For developing countries, the drive is to develop drought and pest resistant crops, which also maximize yield. The potential of nanotechnology to revolutionise the health care, textile, materials, information and communication technology, and energy sectors has been well publicized. The application of nanotechnology to agriculture and food industries is also getting attention nowadays. Investments in agriculture and food nanotechnologies carry increasing weight because their potential benefits range from improved food quality and safety to reduced agricultural inputs and improved processing and nutrition. While most investment is made primarily in developed countries, research advancements provide glimpses of potential applications in agricultural, food, and water safety that could have significant impacts on rural populations in developing countries. This review is concentrated on modern strategies used for the management of water, pesticides, limitations in the use of chemical pesticides and potential of nano-materials in sustainable agriculture management as modern approaches of nanotechnology. Key words: Agriculture, nanotechnology, nanofertilizer, nanoencapsulation, nanoherbicides.

389 citations

Journal ArticleDOI
TL;DR: In this paper, a review provides a contemporary assessment of progresses recorded on synergistic interplay among catalyst components (active metals, support, promoters and binders) during dry reforming using state-of-the-art experimental and theoretical techniques.
Abstract: The abrupt and massive deactivation of methane dry reforming catalysts especially Ni-based is still a monumental impediment towards its industrialization and commercialization for production of value-added syngas via Fischer-Tropsch process. The need for further and more critical understanding of inherent and tailored interactions of catalyst components for performance and stability enhancement during reforming reaction cannot be over-emphasized. This review provides a contemporary assessment of progresses recorded on synergistic interplay among catalyst components (active metals, support, promoters and binders) during dry reforming using state-of-the-art experimental and theoretical techniques. Advancements achieved during interplay leading to improvements in properties of existing catalysts and discovery of novel ones were stated and expatiated. Reaction pathways, catalytic activities, selection of appropriate synthesis route and metal/support deactivation via sintering or carbon deposition have over time been successfully studied and explained using information from these crucial component interactions. This perspective describes the roles of these interactions and their applications towards development of robust catalysts configurations for successful industrial applications.

367 citations

Journal ArticleDOI
TL;DR: This review includes the characterisation of AgNPs and antibacterial activity of such nanoparticles with size, shape and method used for this study.

287 citations