K.V. Karthik

Bio: K.V. Karthik is an academic researcher from Dayananda Sagar College of Engineering. The author has contributed to research in topics: Photocatalysis & Adsorption. The author has an hindex of 4, co-authored 7 publications receiving 415 citations.

Barium titanate nanostructures for photocatalytic hydrogen generation and photodegradation of chemical pollutants

Abstract: Barium titanate nanoparticles (NPs) were synthesised using a modified sol–gel technique. The structure and morphology of NPs were described using various techniques. The photocatalytic activities of the NPs were evaluated by the photocatalytic degradation of Eriochrome black T and potassium dichromate in the presence of UV light irradiation. The barium titanate NP catalyst exhibited higher photocatalytic activity for the degradation of pollutants effectively at room temperature. The different parameters effects such as pollutant initial concentration, loading of photocatalyst, initial pH values of the solution were also examined on the decolourization efficiency of the pollutants. The highest degradation efficiency was achieved for Eriochrome dark T (93%) and potassium dichromate (92%) pollutants. The prepared NPs showed 26 μmol g−1 hydrogen generation within 5 h.

Conducting polymers: a comprehensive review on recent advances in synthesis, properties and applications

Abstract: Conducting polymers are extensively studied due to their outstanding properties, including tunable electrical property, optical and high mechanical properties, easy synthesis and effortless fabrication and high environmental stability over conventional inorganic materials Although conducting polymers have a lot of limitations in their pristine form, hybridization with other materials overcomes these limitations The synergetic effects of conducting polymer composites give them wide applications in electrical, electronics and optoelectronic fields An in-depth analysis of composites of conducting polymers with carbonaceous materials, metal oxides, transition metals and transition metal dichalcogenides etc is used to study them effectively Here in this review we seek to describe the transport models which help to explain the conduction mechanism, relevant synthesis approaches, and physical properties, including electrical, optical and mechanical properties Recent developments in their applications in the fields of energy storage, photocatalysis, anti-corrosion coatings, biomedical applications and sensing applications are also explained Structural properties play an important role in the performance of the composites

Hybrid materials based on conjugated polymers and inorganic semiconductors as photocatalysts: from environmental to energy applications.

Abstract: Photocatalysts provide a sustainable way to remove pollutants or store energy in the form of solar fuels by processes such as water splitting and CO2 photoreduction (artificial photosynthesis). Research in this topic is an expansive field evidenced by the large number of contributions published in the past few years. Hybrid photocatalysts based on inorganic semiconductors (ISs) and conjugated polymers (CPs) have emerged as novel promising photoactive materials. In addition to the well-known behaviour of ISs in photocatalytic processes, CPs have emerged as an interesting alternative to improve the photocatalytic efficiency due to the possibility of controlling their optoelectronic, textural and morphological properties at the molecular level. Thus, the synergy between ISs and CPs leads to more efficient photocatalysts with enhanced light absorption in the overall solar spectrum, improved photocharge generation and transport, higher stability to photo-corrosion and higher surface areas. Here, we present an overview of the advances in the development of hybrid IS-CP photocatalysts for pollutant degradation and energy conversion through water splitting, CO2 reduction and/or N2 fixation using photo- and photo(electro)catalytic processes.