Shahid-ul-Islam

Bio: Shahid-ul-Islam is an academic researcher from Jamia Millia Islamia. The author has contributed to research in topics: Dyeing & Mordant. The author has an hindex of 23, co-authored 47 publications receiving 2117 citations. Previous affiliations of Shahid-ul-Islam include Indian Institute of Technology Delhi & Indian Institutes of Technology.

Green chemistry approaches to develop antimicrobial textiles based on sustainable biopolymers—a review

Abstract: In recent years, the population explosion and environmental pollution have increased the interest of researchers in the discovery of new health and hygiene-related products for the well being of mankind. Among the possible approaches initiated by the textile industry, the use of low-environmental impact technologies- based on sustainable biopolymers- presents a novel possible avenue for large scale development of bioactive textiles. The purpose of this article is to review the information on the role of different biopolymers in the development of antimicrobial textiles. Increased sustainability, environment friendliness, reduced pollution, green chemistry, renewability and intrinsic biological activity are some of the attributes which make chitosan, cyclodextrin, sericin protein, and alginate suitable alternative agents for the functional finishing of textile materials. The application of biopolymers, along with the recent impact of various “green chemistry” strategies, on the antimicrobial properties of ...

Silver nanomaterials as future colorants and potential antimicrobial agents for natural and synthetic textile materials

Abstract: Over the past few years, antimicrobial textiles have gained considerable interest for use in different application fields. Because of these reasons, a wide range of antimicrobial agents with diverse chemical structures such as quaternary ammonium compounds, N-halamine siloxanes, heterocyclic compounds with anionic groups, polybiguanides, triclosan, metal salts, and synthetic colorants have been used to impart antimicrobial properties to different textile materials. However, most of these antimicrobial agents suffer from many disadvantages such as action on non-target microorganisms, toxicity to the environment and low durability of antimicrobial finish. To overcome these problems, silver nanoparticles with strong cytotoxicity towards a broad range of microorganisms, low toxicity to human cells, high selectivity, long term durability, increased dyeability and biocompatibility are drawing a tremendous level of attention from both academic research and industry. Silver nanomaterials, due to their unique properties are particularly attractive for production of textiles surfaces with novel properties such UV protection, water resistant, self cleaning and antimicrobial activity. The present review is intended to describe recent advances about the use of silver nanomaterials as novel colorants and antimicrobial agents for different textiles materials. Finally it also highlights the current challenges and provides scope for future studies.

Review on the development of natural dye photosensitizer for dye-sensitized solar cells

Abstract: Dye-sensitized solar cell (DSSC) provides credible alternative concept for inorganic solid-state photovoltaic devices. The conversion efficiency of DSSC is mainly based on the dye coated on the porous semiconductor TiO2 film. The use of natural dyes in solar cells is a promising development to this technology because it cuts down the high cost of noble metals and chemical synthesis. Therefore, this type of solar cell has attracted considerable attention from the academic and industrial communities. Numerous kinds of pigments, such as anthocyanin, carotenoid, chlorophyll, and flavonoid, extracted from various plant components, such as leaves, fruits, and flowers, have been tested as sensitizers. The photostability of the DSSC sensitizer material must be capable of undergoing many redox cycles without decomposition, and must also have the ability to carry attachment groups, such as phosphonate or carboxylate, to promptly graft it to the TiO2 oxide. This paper highlights and discusses the development of natural dye photosensitizers and the mechanisms affecting the dye stability.

Applications of chitosan in food, pharmaceuticals, medicine, cosmetics, agriculture, textiles, pulp and paper, biotechnology, and environmental chemistry

Abstract: Chitosan is a biopolymer obtained from chitin, one of the most abundant and renewable materials on Earth Chitin is a primary component of cell walls in fungi, the exoskeletons of arthropods such as crustaceans, eg, crabs, lobsters and shrimps, and insects, the radulae of molluscs, cephalopod beaks, and the scales of fish and lissamphibians The discovery of chitin in 1811 is attributed to Henri Braconnot while the history of chitosan dates back to 1859 with the work of Charles Rouget The name of chitosan was, however, introduced in 1894 by Felix Hoppe-Seyler Chitosan has attracted major scientific and industrial interests from the late 1970s due to its particular macromolecular structure, biocompatibility, biodegradability and other intrinsic functional properties Chitosan and derivatives have practical applications in the food industry, agriculture, pharmacy, medicine, cosmetology, textile and paper industries, and in chemistry In recent years, chitosan has also received much attention in dentistry, ophthalmology, biomedicine and bioimaging, hygiene and personal care, veterinary medicine, packaging industry, agrochemistry, aquaculture, functional textiles and cosmetotextiles, catalysis, chromatography, beverage industry, photography, wastewater treatment and sludge dewatering, and biotechnology Nutraceuticals and cosmeceuticals are actually growing markets, and therapeutic and biomedical products should be the next markets in the development of chitosan Chitosan is also the object of numerous fundamental studies In this review, we highlight a selection of works on chitosan applications published over the past two decades