Photocatalysis and nanoparticles:
1. Bio-mediated route of metal doping: A breakthrough
2. Metal nanoparticles synthesis and antimicrobial functionalities
1. Electrocatalytic H2O2 formation and sensing
2. Electrocatalytic CO2 conversion to value chemicals
Physiochemical and biochemical processes
1. Heavy metal remediation using functionalized adsorbent and bio-resin
2. Spirulina platensis: A potential scavenger of chromium from wastewater
Advanced oxidation processes (AOPs)
1. Impact of iron chelation on PhACs decomposition in AOPs

Advanced oxidation processes (AOPs) are promising for the decomposition of emerging micro-pollutants such pharmaceutically active compounds (PhACs) and personal care products from industrial and municipal wastewater. AOPs undergo through different reacting systems such as homogeneous or heterogeneous phases and in light or dark. They have common characteristics of formation of hydroxyl free radicals (HO•). It causes consecutive unselective degradation of organic materials. Iron is susceptible to complex with a lot of such compounds when iron-based AOPs are employed. So, it reduces the efficiency of conventional Fenton reaction. The aim of this work is to focus on the mechanistic aspects of formation of IRON-PhACs CHELATE of high ‘STABILITY’ due to extended conjugation with Fe(III) having available vacant 3d-orbital (Figure 1).  The role of UV light for the reduction of stability of such complexes is also a salient goal of study so that mineralization efficiency of PhACs can be boosted up to yield more biodegradable products together with the destruction of inhibitory effect towards microorganisms in the downstream biological treatment. The study further explores the degradation kinetics, reaction pathways, and toxicity assay of PhACs in AOPs.

Figure 1. Iron-ciprofloxacin (CIP) complexation and its degradation in photo-Fenton process for an enhanced mineralization.