We report a non-trivial facile chemical approach using ionic liquid ([bmim][Cl]) as a porogen for the synthesis of (001) faceted TiO2 nanocrystals having mesoscopic void space. This faceted TiO2 nanomaterial has been doped with Pt nanoclusters through chemical impregnation. The resulting Pt-doped TiO2 nanomaterials are thoroughly characterized by powder X-ray diffraction (PXRD), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), ultra high resolution transmission electron microscopy (UHR-TEM), energy dispersive X-ray spectrometry (EDX), UV-vis diffuse reflection spectroscopy (DRS) and N2 sorption studies. These Pt/TiO2 nanocrystals with (001) exposed facets are employed as efficient and benign catalysts for hydrogen production from pure water and methanol-water systems under one AM 1.5G sunlight illumination. The effect of platinum loading and methanol-water ratio on the photocatalytic activity of the faceted TiO2 nanocrystals are investigated and it is found that hydrogen evolution rates have been enhanced significantly upon Pt loading. Under optimized reaction conditions the highest photocatalytic activity of 11.2 mmol h(-1) g(-1) has been achieved over ca. 1.0 wt% Pt loaded Pt/TiO2 nanocrystals with (001) exposed facets, which is one of the highest hydrogen evolution rates over the noble metal/TiO2 system reported to date in the literature.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1039/c5nr02097b | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Fabrication and characterization of chitosan-based bionanocomposite coating reinforced with TiO nanoparticles and carbon quantum dots for enhanced antimicrobial efficacy.
Int J Biol Macromol
January 2025
Department of Materials Engineering, Materials and Energy Research Center, Dezful Branch, Islamic Azad University, Dezfool, Iran.
Polymer-based nanocomposite coatings that are enhanced with nanoparticles have gained recognition as effective materials for antibacterial purposes, providing improved durability and biocidal effectiveness. This research introduces an innovative chitosan-based polymer nanocomposite, enhanced with titanium oxide nanopowders and carbon quantum dots. The material was synthesized via the sol-gel process and applied to 316L stainless steel through dip-coating.
View Article and Find Full Text PDFPoly(Acrylic Acid)/TiO Nanocomposite Hydrogels for Paper Artwork Cleaning and Protection.
Molecules
December 2024
Department of Chemical Engineering Materials Environment, Sapienza University of Rome, Via del Castro Laurenziano 7, 00161 Rome, Italy.
Paper-based artworks are prone to natural aging processes driven by chemical and biological processes. Numerous treatments have been developed to mitigate deterioration and prevent irreversible damage. In this study, we investigated the use of poly(acrylic acid)/TiO composite hydrogels, combining their cleaning and protective functions in a minimally invasive treatment.
View Article and Find Full Text PDFCovalent Grafting of Graphene Quantum Dots onto Stepped TiO-Mediated Electronic Modulation for Electrocatalytic Hydrogen Evolution.
Inorg Chem
January 2025
School of Chemistry and Chemical Engineering, and Institute for Innovative Materials and Energy, Yangzhou University, 180 Si-Wang-Ting Road, Yangzhou 225002, China.
The interaction between electrocatalytic active centers and their support is essential to the electrocatalytic performance, which could regulate the electronic structure of the metal centers but requires precise design. Herein, we report on covalent grafting of graphene quantum dots (GQDs) on stepped TiO as a support to anchoring cobalt phosphide nanoparticles (CoP/GQD/S-TiO) for electrocatalytic hydrogen evolution reaction (HER). The covalent ester bonds between GQDs and TiO endow enlarged anchoring sites to achieve highly dispersed electroactive CoP nanoparticles but, more importantly, provide an efficient electron-transfer pathway from TiO to GQDs which could regulate the electronic structure of CoP.
View Article and Find Full Text PDFInteractions Between Potentially Toxic Nanoparticles (Cu, CuO, ZnO, and TiO) and the Cyanobacterium : Biological Adaptations to Xenobiotics.
Nanomaterials (Basel)
December 2024
Institute of Microbiology and Biotechnology, Technical University of Moldova, MD 2028 Chisinau, Moldova.
(1) Background: The widespread use of nanoparticles (NPs) implies their inevitable contact with living organisms, including aquatic microorganisms, making it essential to understand the effects and consequences of this interaction. Understanding the adaptive responses and biochemical changes in microalgae and cyanobacteria under NP-induced stress is essential for developing biotechnological strategies that optimize biomolecule production while minimizing potential toxicity. This study aimed to evaluate the interactions between various potentially toxic nanoparticles and the cyanobacterial strain , focusing on the biological adaptations and biochemical mechanisms that enable the organism to withstand xenobiotic exposure.
View Article and Find Full Text PDFEnhancing photovoltaic efficiency in Half-Tandem MAPbI/ MASnI Perovskite solar cells with triple core-shell plasmonic nanoparticles.
Sci Rep
January 2025
Department of Electrical and Computer Engineering, Aarhus University, Aarhus, 8200, Denmark.
Significant progress has been made through the optimization of modelling and device architecture solar cells has proven to be a valuable and highly effective approach for gaining a deeper understanding of the underlying physical processes in solar cells. Consequently, this research has conducted a two-dimensional (2D) perovskite solar cells (PSCs) simulation to develop an accurate model. The approach utilized in this study is based on the finite element method (FEM).
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!