@article { ISI:000314381700030, title = {One-pot synthesis of gold nanoparticle/molybdenum cluster/graphene oxide nanocomposite and its photocatalytic activity}, journal = {Applied Catalysis B-Environmental}, volume = {130}, year = {2013}, month = {FEB}, pages = {270-276}, publisher = {ELSEVIER SCIENCE BV}, address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS}, abstract = {

The paper reports on a facile one-pot synthesis of a tri-component gold nanoparticle/molybdenum cluster/graphene oxide (AuNPs@Mo-GO) nanohybrid composite. The synthetic methodology consists on direct UV irradiation of an aqueous solution containing graphene oxide (GO), Na-2[Mo6Br8(N-3)(6)], HAuCl4 center dot 3H(2)O and isopropanol at room temperature in air using a UV fiber lamp. The composite material exhibits very high photocatalytic activity for the degradation of rhodamine B under visible light irradation. The resulting nanohybrid material was characterized using Raman spectroscopy, UV-vis spectrometry, transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). (c) 2012 Elsevier B.V. All rights reserved.

}, keywords = {gold nanoparticles, graphene oxide, Nanohybrid, Photodegradation, Rhodamine B, visible light, [Mo6Br8(N-3)(6)](2-)cluster}, issn = {0926-3373}, doi = {10.1016/j.apcatb.2012.11.017}, author = {Barras, Alexandre and Das, Manash R. and Devarapalli, Rami Reddy and Shelke, Manjusha V. and Cordier, Stephane and Szunerits, Sabine and Boukherroub, Rabah} } @article {46736, title = {Sunlight assisted improved photocatalytic degradation of rhodamine B using Pd-loaded g-C3N4/WO(3)nanocomposite}, journal = {Applied Physics A-Materials Science \& Processing}, volume = {126}, year = {2020}, month = {AUG}, pages = {724}, type = {Article}, abstract = {

Effective photocatalytic degradation of organic toxic dyes from industrial effluents using low-cost nanomaterials as a photocatalyst under sunlight promises for water purification and environmental recovery. The present work is focused on the synthesis of Palladium (Pd) loaded g-C3N4/WO(3)nanocomposite using a facile method and its photocatalytic degradation of Rhodamine B (RhB) using under sunlight. The results of the photocatalytic dye degradation experiment show that Pd loaded g-C3N4/WO(3)nanocomposite photocatalyst degrades 98\% of RhB in 40 min of sunlight illumination. This remarkable photocatalytic degradation performance of Pd loaded g-C3N4/WO(3)nanocomposite mainly attributed due to their intrinsic photocatalytic activity and co-existence of enhanced light absorbance and efficient charge transfer process in between the g-C3N4/WO(3)heterojunction. The durability testing experiments indicate that Pd loaded g-C3N4/WO(3)nanocomposite photocatalyst could be effectively reused and possesses high photochemical structural stability even after several recycle process. Present experimental results demonstrated highly encouraging photo-degradation response of Pd loaded g-C3N4/WO(3)nanocomposite photocatalyst at outdoor conditions paves the way for the development of energy conversion and environmental remediation process.

}, keywords = {Nanocomposite, Palladium loading, Photocatalysis, Photodegradation, Rhodamine B, Sunlight}, issn = {0947-8396}, doi = {10.1007/s00339-020-03914-7}, author = {Alman, Vidya and Singh, Kirti and Bhat, Tejasvinee and Sheikh, Arif and Gokhale, Suresh} } @article {47653, title = {Glycerol-triazole conjugated rhodamine as colorimetric and fluorimetric sensor for Cu2+}, journal = {ChemistrySelect}, volume = {6}, year = {2021}, month = {SEP}, pages = {9288-9292}, type = {Article}, abstract = {{A glycerol-triazole tethered rhodamine based colorimetric and fluorimetric sensor 3 {\textquoteleft},6 {\textquoteleft}-bis(diethylamino)-2-(((1-(1,3-dihydroxypropan-2-yl)-1H-1,2,3-triazol-4 -yl)methylene)aminospiro [isoindoline-1,9 {\textquoteleft}-xanthen]-3-one (L1) is designed and synthesized for the selective recognition of Cu2+ ion. The sensor L1 allows naked eye detection of Cu2+ ion with a fast response (<1 min). Among the various metal ions tested, the sensor L1 shows selective binding with Cu2+ through turn-on fluorescence mechanism. The sensor shows 1 : 2 binding stoichiometry with binding constant}, keywords = {Cu2+ Sensor, DFT, Glycerol, Rhodamine B, Triazole}, issn = {2365-6549}, doi = {10.1002/slct.202102145}, author = {Verma, Abhishek and Gahlyan, Parveen and Bawa, Rashim and Dash, Soumya Ranjan and Prasad, Ashok K. and Kumar, Rakesh} } @article {49592, title = {Catechin-capped silver-doped titanium dioxide nanoparticle enhanced photocatalytic toxic dye degradation}, journal = {Frontiers in Chemistry}, volume = {13}, year = {2025}, month = {APR}, pages = {1576504}, type = {Article}, abstract = {

Doping-associated surface modification is a powerful strategy to enhance the photocatalytic potential of n-type semiconductor nanomaterials. Silver (Ag) is one of the most effective dopants that can result in the retardation of the electron hole recombination-generating Schottky barrier at the TiO2 interface with a simultaneous extension of absorption to the visible region. This work presents a study on the effect of catechin, a bioactive principle polyphenol compound found in various plants, on the synthesis, Ag-doping and stabilization of TiO2 nanoparticles (TiO2NPs). The nanoparticles were irregular in shape with sizes ranging from 19 to 30 nm. Ag-TiO2NPs were fabricated using TiO2 as a precursor and 1\%, 3\%, and 5\% AgNO3 as a doping agent. The average particle size of 1\%Ag-TiO2NPs, 3\%Ag-TiO2NPs, and 5\%Ag-TiO2NPs was 27.3 +/- 7.5 nm, 29.8 +/- 9.6 nm, and 25.0 +/- 9.0 nm, respectively. High-resolution transmission electron microscopy (HRTEM) showed lattice fringes with an interplanar spacing of 0.23 nm corresponding to the Ag (111) plane in addition to the presence of the anatase phase of TiO2. Fourier transform infrared (FTIR) spectra exhibited a broad peak around 400-800 cm-1 that was attributed to Ti-O-Ti stretching vibrations which was slightly shifted in Ag-TiO2NPs due to changes in the local bonding environment around Ti atoms caused by interactions with Ag. Catechin loading in the TiO2NPs and Ag-TiO2NPs was between 1.55 and 3.3 wt. \%. TiO2NPs, 1\%Ag-TiO2NPs, 3\%Ag-TiO2NPs, and 5\%Ag-TiO2NPs exhibited superior photocatalytic degradation of methylene blue dye up to 78\%, 87\%, 91\%, and 92\%, respectively, and RhB dye up to 92\%, 94\%, 97\% and 99\%, respectively, with a pseudo-first-order reaction kinetics. Furthermore, its recyclability was also demonstrated for three cycles. The simplicity of fabrication and superior photocatalytic performance of TiO2 demonstrated here make this green route advantageous for environmental applications to treat dye contaminated effluent as well as for numerous other applications.

}, keywords = {catechin, green synthesis, methylene blue dye, Photocatalysis, Rhodamine B, silver doping, titanium dioxide nanoparticles}, issn = {2296-2646}, doi = {10.3389/fchem.2025.1576504}, author = {Ghosh, Sougata and Imboon, Tanawat and Layek, Rashbihari and Salunke, Gayatri and Parihar, Vijay Singh and Khumphon, Jeerawan and Webster, Thomas J. and Sutar, Santosh and Kityakarn, Sutasinne and Issro, Chaisak and Khamboonrueang, Dusadee and Thongmee, Sirikanjana} }