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Akbar Hassan,Javed Muhammad Subhan,Iqbal Syeda Tehreem,Khan Muhammad Iftikhar,Anwar Tauseef,Anjum Faiza,Ahmad Ashfaq,Muneeb Muhammad,Ali Asghar,Won Chun Oh 한국세라믹학회 2024 한국세라믹학회지 Vol.61 No.3
To mitigate the increased CO 2 emission, CO 2 reduction to multi-carbon fuels or other useable substances is an appealing yet essential approach. Since, reduction of CO 2 is a thermodynamically uphill process, an economical CO 2 fi xation is only achievable if energy source used is of renewable energy such as solar energy. Photocatalytic CO 2 reduction is a complex pro- cess due to its dependency on catalyst design, selectivity, effi ciency, and photostability. The competence of a photocatalytic CO2 reduction reaction is eff ected by factors, such as the type of photocatalyst used their band-gap energy, surface area, and structure of the crystal. This review discusses the kinetics and thermodynamics of photocatalytic CO 2 reduction and consid- ers the eff ects of parameters like defects and impurity doping on photocatalysis. The study also focusses on the selectivity of products, i.e., methane, methanol, formaldehyde, etc. This comprehensive review provides insights into the development and improvement of photocatalytic effi ciency for CO 2 photoreduction, contributing to the reduction of carbon emissions and a more sustainable future.
Parveen Akhter,Iqrash Shafiq,Faisal Ali,Faiza Hassan,Roeya Rehman,Nasir Shezad,Ashfaq Ahmed,Farrukh Jamil,Murid Hussain,Young-Kwon Park 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.123 No.-
Textile effluents may harm the human body as well as cause environmental pollution. For several decadesresearchers have been attempting to overcome this issue by introducing environmentally friendly technologiesthat degrade bulk dyes to mitigate hazards. Synthetic dyes are carcinogenic for humans as wellas for other living organisms. Various techniques have been developed for the removal of these toxiccompounds, advanced oxidation processes (AOPs) being the most used processes. In this study,Montmorillonite (MMT) supported BiVO4 nanocomposite was prepared by the sol–gel method to degradeBrilliant Red 80 dye using photocatalysis. The BiVO4/MMT composite was comprehensively characterizedby several characterization techniques including X-ray diffraction (XRD), Fourier-transform infraredspectroscopy (FTIR), Scanning electron microscopy (SEM), Raman, Photoluminescence spectroscopy(PL), and UV–Vis diffuse reflectance spectroscopy (UV–Vis-DRS). Interestingly, the composite materialshowed a narrow bandgap of 2.26 eV with strong light absorption in the visible range. A 1000-wattXenon Lamp was used for activity performance measurement. The photocatalytic Brilliant Red 80 degradationactivity was observed to be 99% degraded within 120 min of illumination compared to conventionalBiVO4 which showed around 80% degradation. Moreover, in this work, an acidic media wasfound to favor the degradation of Brilliant Red 80 dye.