Hermenegildo Garcia, PhD, is a Professor at the Instituto de Tecnologia Quimica, Technical University of Valencia, Spain, and an honorary Adjunct Professor at the Center of Excellence in Advanced Materials, King Abdullaziz University, Jeddah, Saudi Arabia. He is a past recipient of the Janssen-Cilag Award from the Spanish Royal Society of Chemistry and the Jaume I Prize for Novel Technologies, and has published extensively on heterogeneous catalysis and related subjects. Amarajothi Dhakshinamoorthy, PhD, is an UGC-Assitant Professor at the School of Chemistry, Madurai Kamaraj University, India. He is a former postdoctoral fellow at the Technical University of Valencia, Spain, and a past recipient of the Young Scientist Award from the Academy of Sciences, India. He has published widely on heterogeneous catalysis and related subjects.