NASICON-type Na3V2(PO4)3 is a promising cathode material for sodium-ion batteries (SIBs). However, large-scale synthesis of Na3V2(PO4)3 with a robust microstructure favoring enhanced sodium-ion storage, which is crucial for commercial usage as an electrode for SIBs, is still illusive. In this work, in situ carbon-coated Na3V2(PO4)3 (C-NVP) nanoparticles embedded in a three-dimensional mesoporous carbon matrix has been prepared by the scalable microwave-assisted sol–gel route. It delivers stable specific capacities of ∼112 and ∼102 mA h g–1 at 0.1 and 1 C-rates (1 C = 118 mA g–1), respectively, in the potential window of 2.3–3.9 V versus Na/Na+. In a wider potential window of 1.2–3.9 V, C-NVP shows reversible insertion/extraction of ∼2.4 moles of Na+ ions corresponding to a specific capacity of ∼143 mA h g–1, with 75% capacity retention after 500 cycles at 1.0 C-rate. We attribute such unusual stability at higher moles of Na+-ion insertion to the ability of nanocrystallites to freely expand against mesoporous carbon as Na3V2(PO4)3 converts to Na4V2(PO4)3. Moreover, a symmetric full cell using C-NVP as both cathode and anode shows excellent cyclability and rate performance, with a high specific capacity of 50 mA h g–1 at 2 A g–1 stable for >10,000 cycles, corresponding to specific energy and power density of 88 W h kg–1 and 3504 W kg–1, respectively. A proto-type pouch cell (symmetric full cell) delivers 7 mA h capacity at 0.1 A g–1. The scalable microwave-assisted sol–gel route provides a robust solution for the large-scale synthesis of C-NVP with superior sodium-ion storage performance.

Targeted drug delivery system is a unique type of medication conveyance framework where the pharmacologically dynamic specialists mainly focused on its site activity and not to the non-focused on organs, tissues or cells. Nano sponges are such sort of compelling pharmaceutical transporters, which take care of issues like harmfulness and helpless bioavailability such as they can stack both hydrophilic and hydrophobic medicines. Various classifications of medications can stack into Nano sponge for focused medication conveyance. This targeted drug delivery system is one of the most encouraging methodologies in the existence of science. Nano sponges are little in size with a three-dimensional organization and nanometric depression. Nano sponges are exceptionally permeable and have the extraordinary capacity to ensure dynamic particles and offer programmable delivery. This Review article explains the overall presentation of nano sponges a grouping of nano sponge trademark highlights of nano sponges their points of interest inconveniences, and synthetic compounds utilized in their planning, arrangement of technical factors influencing on the preparation component activities and assessment boundaries with some particular applications.  Keywords: Nano sponges; Targeted drug delivery; Solubility Enhancement; controlled drug delivery.

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In India there is a demand for renewable source of energy in recent years. There is a necessary to measure the level of satisfaction of the solar energy product using consumers. To measure this, it is inherent to know the usage practices of those consumers. Solar energy is the major contributors to renewable energy next to Wind energy in Tamilnadu. There are many solar energy products available in the market which are used for various purposes at home and in society. The question is how far the consumers using solar energy products are satisfied with those products. The nature of product is identified and its duration of usage is measured. The respondents were also asked for the frequency and hours of usage of solar energy products. The increase in number of duration, frequency of usage, implies that the respondents are more informative about the products based on its pros and crons. When the respondents are using the products more frequently, it is easy to measure their level of satisfaction. The reason to measure the level of satisfaction among the solar energy product is to provide guidance to the future product users and also for the solar energy product manufacturing industries in framing policies accordingly.