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The present research focus is to design a new catalyst by doping polyoxometalate (POM) in conducting polymers. Polypyrrole (PPy)-doped Keggin type POM [PMO12O40]3− with various molar concentrations were synthesized using the coprecipitation method. The doped samples were synthesized and characterized using spectral techniques such as Fourier transform infrared spectra, which show the presence of extended functional groups, and scanning electron microscopic morphology exhibits a square-shaped structure. X-Ray diffraction results reveal crystallite size of around 40 nm. The conductivity of PPy is 3.3 × 10−6 S cm−1, whereas polyacid-doped polypyrrole has resulted in increased conductivity of 7.12 × 10−5 S cm−1. The antimicrobial activity of PPy revealed a better antibacterial activity due to the presence of the NH group and aromatic ring in the structure.

A novel hybrid composite, namely {[VIV+PMo11O40]⊂[β-CD]} which shows the high percent of apoptosis of MTT assay of A549 cell line (lung cancer) in different concentrations. The composite has been characterized using techniques such as FT-IR, EPR, SEM, EDS and X-ray diffraction. The anticancer (lung cancer A549 cell line) was investigated using direct microscopic observations for drug treated cell line and IC50 value of 1.93. The apoptosis of 45.37 % cell death in cell line of minimum concentration (3.12 μg/mL) shows the good viability of β-CD-POM against lung cancer A549 cell line.

In order to overcome the challenges of low permeate flux (Jp) and the accompanying reverse solute flux (JS) during the forward osmosis (FO) membrane separation process, we synthesized four hybrid materials of polyacid-based organic compounds and incorporated them into the selective polyamide (PA) layer to make novel thin-film nanocomposite (TFN) FO membranes. The Jp and JS of each membrane were evaluated and used along with membrane selectivity (Jp/JS) as indicators of membrane separation performance. The fabricated and modified membranes were also characterized for ridge and valley surface morphologies with increasing hydrophilicity and finger-shaped parallel channels in the PSf substrate. Moreover, two highly hydrophilic nanoparticles of graphene oxide (GO) and titanium oxide (TiO2) were introduced with the hybrid materials for PA modification, which can further enhance the Jp of the TFN membranes. The highest Jp of the TFN membranes achieved 12.1 L/m2-h using 0.1% curcumin-acetoguanamine @ cerium polyacid (CATCP) and 0.0175% GO. The characteristic peaks of the hybrid materials were detected on the membrane surface using attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, evidencing successful incorporation of the hybrid materials during membrane modification. Here, we present the novel TFN membranes using hybrid materials for separation applications. The reactions for synthesizing the hybrid materials and for incorporating them with PA layer are proposed.