It was found that the doping of Ln in ZnO helps to achieve complete mineralization of 4-NP within a short irradiation time. It was observed that the rate of degradation of 4-NP over Ln-doped ZnO increases with increasing La, Nd and Sm loading up to 4, 4 and 8 wt% and then decreases. The effects of the type and amount of loadings on the photocatalytic activity of Ln-doped ZnO were studied and the results were compared with pure ZnO. The photocatalytic activity of La-doped ZnO in the degradation of 4-nitrophenol (4-NP) was studied. Click a suggestion to head to that article. As you type you'll see recommended articles appear below the search bar. STEP 1 Type out the topic you need help with into the search bar. From SEM and TEM images it was found that the particle size of La-doped ZnO is much smaller as compared to that of pure ZnO. All you need to do is use the search bar to find an article that will answer your question. The XRD results revealed that Ln3+ is uniformly dispersed on ZnO nanoparticles in the form of small Ln2O3 cluster. more ABSTRACT Lanthanide doped ZnO nanoparticles with different Ln (Ln = La, Nd and Sm) contents were synthesized by polymer pyrolysis method and characterized by various techniques such as XRD, UV–vis, SEM, TGA, and TEM. It was found that the transport selectivity for water in organophilic membranes was due to high diffusion selectivity (for water) although sorption selectivity favored the piperazines.ĪBSTRACT Lanthanide doped ZnO nanoparticles with different Ln (Ln = La, Nd and Sm) contents were.
A model was used to estimate the diffusion coefficients of the various permeants. PI membrane showed higher selectivity for water than PAN-co-AA. Hydrophilic membranes, however, showed higher affinity toward water during both sorption and permeation. Organophilic membranes showed higher selectivity toward alkyl piperazines during sorption, but permeation was in favor of water. A systematic study of sorption and permeation of the aqueous alkyl piperazines through poly(dimethylsiloxane) (PDMS), styrene-butadiene rubber (SBR), PDMS filled with zeolites NaX and silicalite (SA-5), polyimide (PI), and poly(acrylonitrile-co-acrylic acid) (PAN-co-AA) was carried out at different concentrations and temperatures. more A detailed analysis of separation of N-methyl piperazine (NMP), N-ethyl pipera-zine (NEP), and water was undertaken by the pervaporation technique. A detailed analysis of separation of N-methyl piperazine (NMP), N-ethyl pipera-zine (NEP), and wa.
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