Author
R. Jayaprakash
Bio: R. Jayaprakash is an academic researcher from Ramakrishna Mission. The author has contributed to research in topics: Solar still & Dielectric. The author has an hindex of 20, co-authored 29 publications receiving 1544 citations.
Papers
More filters
TL;DR: In this article, a new design of solar still with a hemispherical top cover for water desalination with and without flowing water over the cover is reported, and the daily distillate output of the system is increased by lowering the temperature of the cover by water flowing over it.
222 citations
TL;DR: In this article, a phase change material (PCM) was added to the concentrator-coupled hemispherical basin solar still to augment the efficiency and distillate yield.
176 citations
TL;DR: In this article, the authors reported an innovative design of tubular solar still with a rectangular basin for water desalination with flowing water and air over the cover, and the daily distillate output was increased by lowering the temperature of water flowing over it (top cover cooling arrangement).
146 citations
TL;DR: In this paper, a microwave assisted solution-phase approach has been applied for the synthesis of zinc oxide nanostructures by using two reagents: hydrazine hydrate and ammonia.
136 citations
TL;DR: Tin oxide nanoplatelets (SnO) and nanoparticles (snO 2 ) were prepared by microwave assisted technique with an operating frequency of 2.45 GHz as mentioned in this paper. But this technique permits to produce gram quantity of homogeneous nanoparticles in just 10min.
132 citations
Cited by
More filters
TL;DR: In this paper, the synthesis of nanostructured zinc oxide nanoparticles by both chemical and biological method was reported, and the results showed that the particles obtained were poly dispersed and the average size ranged from 25 to 40nm.
758 citations
TL;DR: A review of green and biological synthesis methods of ZnO-NPs and investigation of their biomedical applications is presented in this paper, where the authors summarize the green-and biological-based synthesis methods and their applications.
548 citations
TL;DR: In this article, a review of different desalination units integrated with renewable energy with special emphasis given to solar energy is discussed and problems associated with desalification units and their remedies have been presented.
Abstract: Water plays an important role in all our day to day activities and its consumption is increasing day by day because of increased living standards of mankind. Some regions of the globe are under severe stress due to water scarcity and pollution. The fresh water needs of mankind can be only satisfied if saline water which is available in plenty is converted to potable water by desalination. Desalination industry has shown increased threats of CO2 emissions and severe environmental impacts. Desalination industry can be made sustainable if they are integrated with renewable energy and if proper brine disposal methods are followed. In this review different desalination units integrated with renewable energy with special emphasis given to solar energy is discussed. The problems associated with desalination units and their remedies have been presented. Apart from this some novel methods of desalination process has also been explained. This review will allow the researchers to choose appropriate desalination technology for further development.
481 citations
TL;DR: Oxide nanotechnology of the 21st century needs a strong interplay of preparative creativity, analytical skills, and new ideas for synergistic implementations to revolutionize areas ranging from data processing to biocatalysis.
Abstract: Oxide nanomaterials are indispensable for nanotechnological innovations, because they combine an infinite variety of structural motifs and properties with manifold morphological features. Given that new oxide materials are almost reported on a daily basis, considerable synthetic and technological work remains to be done to fully exploit this ever increasing family of compounds for innovative nano-applications. This calls for reliable and scalable preparative approaches to oxide nanomaterials and their development remains a challenge for many complex nanostructured oxides. Oxide nanomaterials with special physicochemical features and unusual morphologies are still difficult to access by classic synthetic pathways. The limitless options for creating nano-oxide building blocks open up new technological perspectives with the potential to revolutionize areas ranging from data processing to biocatalysis. Oxide nanotechnology of the 21st century thus needs a strong interplay of preparative creativity, analytical skills, and new ideas for synergistic implementations.
332 citations
TL;DR: In this paper, the effect of Al-doping on the sensing properties of a ZnO nanocluster was investigated, and it was shown that if a single Zn atom is replaced by an Al atom, a CO molecule can be adsorbed from its C-head on the doped site with ΔG of −5.0 kcal/mol at room temperature.
Abstract: Experimental work has already demonstrated that Al-doped ZnO nanostructures exhibit a higher response than the pure ZnO sample to CO gas and can detect it at sub-ppm concentrations. In this work, using density functional theory calculations (at B3LYP, M06-L, and B97D levels), we studied the effect of Al-doping on the sensing properties of a ZnO nanocluster. We investigated several doping and adsorption possibilities. This study explains the electrical behavior that has been obtained from the ZnO nanostructures upon the CO adsorption. There is a relationship between the HOMO–LUMO energy gap (Eg) and the resistivity of the ZnO nanostructure. If a Zn atom of the ZnO nanocluster is replaced by an Al atom, a CO molecule can be adsorbed from its C-head on the doped site with ΔG of −5.0 kcal/mol at room temperature. In contrast to the pristine cluster, Al-doped ZnO cluster can detect CO molecules due to a significant decrease in the Eg and thereby in the resistivity. We also found that the Eg decreases by increa...
328 citations