Dr. Brajesh Kumar is an assistant professor and head of the Post Graduate Department of Chemistry at TATA College, Kolhan University, India. He received a Ph.D. in Chemistry from the University of Delhi, India. His research interest is the development of sustainable and eco-friendly techniques for nanoparticle synthesis and their applications for environmental remediation, active films of organic solar cells, nanomedicine, sensors, natural product extraction, purification, and analysis, natural polymers, peptide chemistry, microwave and ultrasound-assisted organic synthesis, and organic synthesis. Dr. Brajesh Kumar has been credited for different national and international fellowships and has worked as a faculty member at various universities in India, Ecuador, and South Korea. He has also published numerous research articles (h-index 37, Citations 4382), 2 patents and is an active reviewer of more than fifty journals. He is also listed among the top 2% of scientists (2021, 2022, and 2023) worldwide by Stanford University.