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The structural, electronic, and optical properties of metal (Si, Ge, Sn, and Pb) mono- and co-doped anatase TiO$_{2}$ nanotubes are investigated, in order to elucidate their potential for photocatalytic applications. It is found that Si…

Mesoscale and Nanoscale Physics · Physics 2020-04-29 Mohamed M. Fadlallah , Ulrich Eckern

Miniaturizing nonlinear optical components is essential for integrating advanced light manipulation into compact photonic devices, enabling scalable and cost-effective applications. While monocrystalline lithium niobate thin films advance…

Nanostructured TiO2 thin films were prepared by pulsed laser deposition (PLD) on indium doped tin oxide (ITO) substrates. Results from X-ray photoelectron spectroscopy (XPS) show that Ti 2p core level peaks shift toward the lower binding…

Materials Science · Physics 2007-12-20 H. Lin , Abdul K. Rumaiz , Meghan Schulz , Demin Wang , Reza Rock , C. P. Huang , S. Ismat Shah

Graphene-based nanostructures with distinct structural and physicochemical characteristics may be able to photodegrade antibiotics effectively. Herein, this study reports the successful synthesis of NiFe2O4/CeO2/GO nanocomposite (NC) by…

Context. The photolysis of hydrogenated amorphous carbon, a-C(:H), dust by UV photon-irradiation in the laboratory leads to the release of H2 as well as other molecules and radicals. This same process is also likely to be important in the…

Astrophysics of Galaxies · Physics 2015-09-23 A. P. Jones , E. Habart

We develop herein plasmonic-catalytic Au-IrO$_2$ nanostructures with a morphology optimized for efficient light harvesting and catalytic surface area; the nanoparticles have a dendritic morphology, with closely spaced Au branches all…

Band gap tuning in two-dimensional transitional metal dichalcogenides (TMDs) is crucial in fabricating new optoelectronic devices. High resolution photoluminescence (PL) microscopy is needed for accurate band gap characterization. We…

Optics · Physics 2017-04-13 Chenwei Tang , Shuai Jia , Weibing Chen , Jun Lou , Dmitri V. Voronine

Bimetallic nanoparticles serve as a vital class of catalysts with tunable properties suitable for diverse catalytic reactions, yet a comprehensive understanding of their structural evolution under operational conditions as well as their…

Materials Science · Physics 2025-02-04 Yaxin Tang , Mingao Hou , Qian He , Guangfu Luo

Photocatalytic water splitting represents a pivotal pathway for converting solar energy into chemical energy, with the core challenge lying in the design and optimization of photocatalysts [1] . TiO2, as a quintessential photocatalytic…

Materials Science · Physics 2025-02-20 Zhihao Shen

In present work, we report on the use of organized TiO$_2$ nanotube layers with a regular intertube spacing for the growth of highly defined $\alpha$-Fe$_2$O$_3$ nano-needles in the interspace. These $\alpha$-Fe$_2$O$_3$ decorated TiO$_2$…

Applied Physics · Physics 2020-04-30 Selda Ozkan , Gihoon Cha , Anca Mazare , Patrik Schmuki

Photoreforming is a sustainable photocatalytic process that degrades plastic waste while simultaneously producing hydrogen (H2) from water. However, this process has received limited attention due to the scarcity of effective catalysts…

Materials Science · Physics 2024-12-03 Thanh Tam Nguyen , Kaveh Edalati

The fabrication of heterogeneous photocatalysts has received increasing research interest due to their potential applications for the degradation of organic pollutants in wastewater and the evolution of carbon-free hydrogen fuel via water…

Applied Physics · Physics 2021-11-08 Subrata Das , Sagar Dutta , Angkita Mistry Tama , M. A. Basith

Nanocomposite NiO:Au thin films, formed by gold nanoparticles embedded in a nickel oxide matrix, have been grown by reactive pulsed laser deposition (R-PLD). Two actively synchronized nanosecond laser sources, a KrF excimer laser (248 nm)…

Materials Science · Physics 2013-04-22 I. Fasaki , M. Kandyla , M. G. Tsoutsouva , M. Kompitsas

With the emergence of new photonic and plasmonic materials with optimized properties as well as advanced nanofabrication techniques, nanophotonic devices are now capable of providing solutions to global challenges in energy conversion,…

Hydrogen gas is a promising alternative to fossil fuels due to its high energy output and environmentally safe byproducts. Various morphologies of photocatalytic materials have been explored for high-efficiency H$_2$ production, for…

Materials Science · Physics 2025-03-04 Adway Gupta , Arunima Singh

Generally adopted design strategies for enhancing the photocatalytic activity are aimed at tuning properties such as the visible light response, the exposed crystal facets, and the nanocrystal shape. Here, we present a different approach…

Nanotubes (NTs) of transition metal dichalcogenides (TMDs), such as MoS2 and WS2, were first synthesized more than a quarter of a century ago; nevertheless, many of their properties have so far remained basically unknown. This review…

Materials Science · Physics 2019-07-24 T. V. Shubina , M. Remškar , V. Yu. Davydov , K. G. Belyaev , A. A. Toropov , B. Gil

There is great interest in the study of topological insulator-based heterostructures due to expected emerging phenomena. However, a challenge of topological insulator (TI) research is the contribution of the bulk conduction to the TI…

Substitutional doping with transition metals is carried out in the Lepidocrocite phase - the stable monolayer geometry of TiO$_2$, using density functional theory (DFT) methods. The doping is carried out at the differently coordinated O…

Materials Science · Physics 2024-10-14 Kati Asikainen , Matti Alatalo , Marko Huttula , S. Assa Aravindh

A high-yield production of high-quality boron-nitride nanotubes (BNNTs) was reported recently in several publications. A boron-rich material is evaporated by a laser or plasma in a nitrogen-rich atmosphere to supply precursor gaseous…