g-C3N4/carbon dot-based nanocomposites serve as efficacious photocatalysts for environmental purification and energy generation: A review

Review on augmentation in photocatalytic activity of CoFe2O4 via heterojunction formation for photocatalysis of organic pollutants in water

A multicriteria decision making approach for evaluating renewable power generation sources in Saudi Arabia

IOP Conference Series: Materials Science and Engineering

A multi-criteria approach to rank renewables for the Algerian electricity system

Different effluents from textile industries which are dumped into the water bodies have been a major concern of the modern world. The uncontrolled discharge of the synthetic textile dyes in water bodies especially have led to serious environmental problems and health hazards. Among the different existing approaches to treat water, photocatalysis is an attractive approach as it uses the inexhaustible and clean solar energy. Considering its ability to absorb in the visible light of solar spectrum, its multiferroic property and its crystal structure, researchers feel BiFeO3 can provide a breakthrough in the treatment of water. In this article, a thorough review is presented on the various attempts done so far on degradation of different synthetic textile dyes solution using BiFeO3 nanostructures.

A review on the visible light active BiFeO3 nanostructures as suitable photocatalyst in the degradation of different textile dyes

A developing country like India encounters challenges like exponential increase in population and rising per capita energy consumption which demands an optimum usage of available energy resources. Currently the energy demands are mostly met by non renewable energy sources, a system that puts a tremendous pres- sure on the economy and causes a serious threat to the environment, flora and fauna. Hence, the government and other state nodal agencies in India are taking initia- tives to promote the use of the renewable energy sources. In the present study, an attempt has been made to arrive at the overall priorities of the renewable energy sources available in India using Analytical Hierarchy Process (AHP). The important parameters like Cost, Efficiency, Environmental impact, Installed capacity, Esti- mated potential, Reliability and Social acceptance are considered in this model to identify and rank the renewable energy sources like solar, wind and biomass. A sur- vey based on Delphi technique was conducted in the previous work from which the scales for the aforementioned parameters are fixed. For each attribute, and each pair of alternatives, the outcome of the survey specifies their preference in the form of a fraction between 1/9 and 9. The results show the order of merit as Wind energy (0.501), Biomass energy (0.288), and Solar energy (0.2056) with respect to Indian policies and conditions to meet the future energy demand.

https://www.springer.com/cda/content/document/cda_downloaddocument/9783642040443-c1.pdf?SGWID=0-0-45-856058-p173921173

Evaluation of the Significant Renewable Energy Resources in India Using Analytical Hierarchy Process

A methodology for the electrical energy system planning of Tamil Nadu state (India)

The discharges of effluents from the Textile industries contain bleaching and dyeing chemicals which are very harmful to the environment. Thus, managing textile effluents to make zero discharge of ...

Visible light photocatalytic activity of Mn-doped BiFeO3 nanoparticles

Visible light driven photocatalytic property of nickel doped BiFeO3 nanoparticles were explored from the degradation of Acid red-85 dye. Fuel (citric acid) assisted auto-combustion method was adopted for the synthesis of BiFe(1−x)NixO3 (x = 0.25, 0.5, 0.75 and 0.10) nanoparticles. The synthesized particles were characterized by x-ray diffraction, from which reduction in crystallite size has been observed from 57 nm to 28 nm. Lattice parameters also have been calculated for the same which shows an increase in lattice parameters confirming the presence of nickel in the BiFeO3 lattice. Morphological studies were carried out using high resolution scanning electron microscopy on undoped and 10% nickel doped BiFeO3 samples which show a decrease in particle size in the doped sample compared to the bare BiFeO3 similar results have been observed in Transmission Electron Microscopy images. Reduction in the optical band gap from 2.2 eV to 2.02 eV of BiFeO3 compared to 10% Nickel doped bismuth ferrite is observed. Vibrating sample magnetometer studies performed at room temperature indicates that addition of nickel increases both remnant and saturation magnetization to the bismuth ferrite sample thus helping in the removal of photocatalyst after treatment. Photocatalytic study on the Acid red-85 dye by visible light irradiation showed the complete degradation of dye in 40 min. The 10% Nickel doped BiFeO3 showed the best photocatalytic activity. The enhancement in the photocatalytic activity of the doped BiFeO3 is because of efficient charge separation which has been confirmed by photoluminescence studies.

https://iopscience.iop.org/article/10.1088/2053-1591/ab225f/pdf

Joseph Daniel

Papers

A review on the visible light active BiFeO3 nanostructures as suitable photocatalyst in the degradation of different textile dyes

Evaluation of the Significant Renewable Energy Resources in India Using Analytical Hierarchy Process

A methodology for the electrical energy system planning of Tamil Nadu state (India)

Visible light photocatalytic activity of Mn-doped BiFeO3 nanoparticles

Photocatalytic degradation of acid red-85 dye by nickel substituted bismuth ferrite nanoparticles