Biogenic nanomaterials for photocatalytic degradation and water disinfection: a review

The nanotechnology industry fabricates a wide variety of products used in many areas, such as pharmaceutical, medical, civil and space engineering, and day-to-day life. The application of NMs, however, has encountered significant drawbacks such as the high energy costs involved in NM production proc...

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Published inEnvironmental science water research & technology Vol. 6; no. 12; pp. 3195 - 3213
Main Authors Bandala, Erick R, Stanisic, Danijela, Tasic, Ljubica
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 01.12.2020
Subjects
Analysis
Antiinfectives and antibacterials
Antimicrobial activity
Biodegradation
Catalytic activity
Chemicals
Civil engineering
Contaminants
Deactivation
Degradation
Disease resistance
Disinfection
Energy costs
Feasibility studies
Inactivation
Nanomaterials
Nanotechnology
Organic contaminants
Pathogens
Photocatalysis
Photodegradation
Pollutant removal
Receiving waters
Reviews
State-of-the-art reviews
Temperature requirements
Water treatment
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Summary:The nanotechnology industry fabricates a wide variety of products used in many areas, such as pharmaceutical, medical, civil and space engineering, and day-to-day life. The application of NMs, however, has encountered significant drawbacks such as the high energy costs involved in NM production processes, or the use of hazardous chemicals. Using biogenic protocols to produce NMs includes several advantages for example the use of more eco-friendly chemicals, mild pressure and temperature requirements, reasonable energy demands, and their potential for producing NMs with the desired size range and tailored activities. Many interesting biogenic NMs with antimicrobial activity have been reported attracting a great deal of attention in the treatment of bacterial, fungal, and viral infections. The photocatalytic activity of biogenic NMs and their use in the removal of organic contaminants and inactivation of pathogens in water are topics receiving far less attention. This review paper provides an in-depth review of the state-of-the-art processes currently available to generate biogenic NMs and the technology reported for their characterization, an analysis of their use in the photocatalytic degradation of organic contaminants and inactivation of bacteria in water, and their potential use as antivirals. This study also reviews the major differences between conventional and biogenic NMs, analyzing and undertaking a critical analysis on the feasibility challenges faced by the nanotechnology industry for the engineered use of biogenic NMs, their main advantages and drawbacks, and identifies current knowledge gaps and recommends future research directions. The outcomes of this study provide an in-depth analysis of the potential and feasibility of biogenic nanomaterials for environmental applications. This paper provides a review of the state-of-the-art processes to generate biogenic NMs and their characterization, and an analysis of their use in the photocatalytic degradation of organic contaminants and inactivation of pathogens in water.
Bibliography:Erick R. Bandala is an Assistant Research Professor for Advanced Water Technologies at the Desert Research Institute. Dr. Bandala holds a Ph.D. in Engineering; MSc in Organic Chemistry, and BEng in Chemical Engineering. His research interests in Environmental Engineering include A) the water-energy-Food NEXUS; B) water Security; C) international water, sanitation and hygiene (IWASH); D) advanced oxidation processes (AOPs) for environmental restoration; E) synthesis, characterization and application of nanomaterials for environmental restoration; G) development of climate change adaptation methodologies for water security. Dr. Bandala is an author or a co-author of 99 peer-reviewed papers in international journals (2020 average impact factor 4.6, >3100 citations, h-index 27); 5 books, 27 book chapters and 65 studies published in proceedings of international conferences.
Danijela Stanisic is a post-doctoral researcher in the Biological Chemistry Laboratory, Institute of Chemistry, University of Campinas, Campinas, Sao Paulo, Brazil. Her master and bachelor degrees are in Chemical Engineering with emphasis in the field of Pharmaceutical Engineering from the Faculty of Technology and Metallurgy, University of Belgrade, Serbia. She has a long experience in designing dermo-cosmeceuticals. Danijela's research is also focused on the synthesis of biogenic noble metal nanoparticles and their toxicity to humans and animals by a metabolomics approach.
Ljubica Tasic is a chemist, holds a PhD and leads a biological chemistry group at the Organic Chemistry Department of the Institute of Chemistry, University of Campinas, Campinas, Sao Paulo Brazil. As an associate professor, she lectures courses on biochemistry, organic chemistry and general chemistry. Her research projects are related to biological chemistry, biochemistry, nanochemistry and metabolomics. She is an author of more than 85 scientific articles, she also published around 20 book chapters and deposited six patents (Brazilian Agency). The biological chemistry group that she leads since 2004 formed more than 20 graduate students, 11 of them hold PhD and 10 hold MSc diplomas. She also supervised ten postdoctoral researchers and more than 40 undergrads.
ISSN:2053-1400
2053-1419
DOI:10.1039/d0ew00705f