It was no statistically significant difference between the photocatalytical efficiency of GN- and GO-based composites. Even if the calcined composites have the specific surface area about 10 times lower, their lower gap energy, higher degree of crystallinity and photocatalytic activity make them efficient candidates for removal of pollutants from domestic waste water. selleck chemicals llc The photodegradation mechanism occurred mostly by π-π interactions between GN/GO and pollutant molecules.The purpose of this review is to provide an overview of the available gypsum based composite including various phase change materials employed to increase the thermal energy storage capacity of building materials. A wide range of materials such as n-alkane, saturated fatty acid, fatty acid esters etc are used as phase change materials. Adding carbonaceous material (carbon nanofibers, activated nanocarbon, graphite nanosheets etc.) to augment some properties is also a common practice. In addition, there are presented the methods of obtaining the nano/macro-composites together with some thermal characteristics of the newly prepared materials.Sheet-like Zinc Oxide/Silicon ([ZnO]/[Si]) light emitting diode (LED) has been fabricated through depositing nanoscale ZnO on the p-type single crystal silicon by using a radio frequency (RF) magnetron sputtering method. The (100), (002) and (101) diffraction peaks can be observed. With the increasing sputtering time, however, the intensity of (100) and (101) diffraction peaks has gradually decreased and the intensity of (002) diffraction peak has gradually enhanced. Through low the sputtering power, the obtained ZnO shows better (002)-orientation growth. Electroluminescence (EL) from [ZnO]/[Si] LED have been decomposed into three emission bands, i.e., UV, green and orange emissions, which origin from the band gap, zinc interstitial or vacancies oxygen and shallow level, respectively. At the low sputtering power, orange emission is disappeared. It is indicated that the structures and EL properties are sensitive to the fabrication conditions. It is important to optimize and tune the fabrication condition for purposeful application in the future works.Germanium (Ge) nanoparticles/multiwalled carbon nanotubes (Ge/MWCNTs) composite is synthesized by solvothermal method combined with heat treatment under H₂ atmosphere. The Ge particles are buried in MWCNTs network to form expected composite. The MWCNTs not only improve the conductivity of the composite but also act as a flexible matrix to buffer the volume change of germanium nanoparticles during the process of insertion and de-insertion in lithium ion battery system. The Ge/MWCNTs composite behaves better cycle performance and higher rate capability than those of pure germanium (Ge) nanoparticles. The Ge/MWCNTs maintained discharge capacity as 1040 mAh·g-1 after 60 cycles at the current density of 100 mA·g-1. It is a promising anode material for lithium ion battery application.This work aims at the development of curcumin loaded poly(methyl methacrylate) (CC-PMMA) fluorescent nanofiber membrane and the evaluation of its multifunctional characteristics. The nanofibers were created by electrospinning method. The conditions of the spinning were optimized to obtain beadless and smooth nanofibers. The physico-chemical characteristics of the nanofibers were studied by various techniques including, polarizing light microscope, FT-IR, inverted epi fluorescence microscope and HR-TEM. The HR-TEM results confirm the formation of nanofibers with the diameter in the range of 90-200 nm. The average width of PMMA and CC-PMMA nanofibers are ˜90±0.02 nm and ˜110±0.01 nm, respectively. The CC-PMMA nanofibers exhibited the fluorescence shift with an emission around 520 nm. The multifunctional characteristic of CC-PMMA nanofiber was evaluated for sensor and antibacterial applications. The CC-PMMA nanofiber membrane showed a visible color variation from yellow to red on interaction with ammonia. This colorimetric response to ammonia is highly selective and there was no any interference from other related organic vapors. In addition, it showed good antibacterial activities for Gram-positive and Gram-negative bacteria (zone of inhibition of 27 mm for S. aureus). This is the initial research report in the combination of curcumin and PMMA nanofiber. The multifunctionality of the CC-PMMA nanofibers could be exploited for various applications including sensors, antibacterial coatings, air filtration and drug delivery.Herein, we report the utilization of kitchen waste biomass as a source of carbonaceous material for carbon nanodots synthesis and its application as a plant growth regulator in agricultural crops. The water soluble carbon dots (CDs) were synthesized by pyrolysis of kitchen derived waste tea residue (WTR) and used in the field of agriculture nanotechnology. Herein, we have explored the effect of different concentrations of WTR-CDs (10, 30 and 50 mg/L) on growth of FG with respect to various plant growth parameters. It was observed that the WTR-CDs has positive effect on all plant growth parameters investigated and also assist for micronutrient uptake which is confirmed by AAS and zeta potential measurement. UV light, Fluorescence spectroscopy, and confocal fluorescence microscopy examination were employed for the understanding of uptake and transport route of WTR-CDs in FG plant through absorption of WTR-CDs by root as well as seed coat along with water. Therefore, the growth of FG was a significant increase in quality of the plant which appears to be effective and no serious side effects were seen during the study.The corrosion mechanisms for different corrosive media on the aged 7A46 aluminum alloy were systematically investigated at nanoscale level. The combination of empirical intergranular and exfoliation corrosion behavior was employed, and coupled with first-principles calculations. Results revealed that the dispersed distribution of matrix precipitates (MPs) leads to the enhancement of the corrosion resistance pre-ageing (PA) followed by double-ageing (PA-DA) alloy. The deepest corrosion depth of PA-DA alloy was in hydrochloric acid, and the calculation result demonstrates that the passivation effect in combination with the accumulation of corrosion products in nitric acid protect the PA-DA alloy from further corrosion.