نتایج جستجو برای: photocatalyst nanostructures

تعداد نتایج: 23105  

Journal: :Nanoscale 2015
Guohui Chen Shaozheng Ji Yuanhua Sang Sujie Chang Yana Wang Pin Hao Jerome Claverie Hong Liu Guangwei Yu

A novel scaly Sn3O4/TiO2 nanobelt heterostructured photocatalyst was fabricated via a facile hydrothermal route. The scaly Sn3O4 nanoflakes can be synthesized in situ and assembled on surface coarsened TiO2 nanobelts through a hydrothermal process. The morphology and distribution of Sn3O4 nanoflakes can be well-controlled by simply tuning the Sn/Ti molar ratio of the reactants. Compared with si...

Journal: :ACS applied materials & interfaces 2014
Joyjit Kundu Debabrata Pradhan

A simple, template-free and mild solution chemistry route was employed to synthesize diverse copper sulfide (CuS) nanostructured assemblies at 70 °C by varying the solvent (water or ethylene glycol, or their ratios (3:1, 1:1 and 1:3)). The CuS structures in the shape of spheres and nanotubes were found to be assemblies of either nanoplates or nanoparticles. The nanotube formation was elaboratel...

2017
Daniela Nunes Ana Pimentel Lidia Santos Pedro Barquinha Elvira Fortunato Alberto Naldoni

In the present study, titanium dioxide nanostructures were synthesized through microwave irradiation. In a typical microwave synthesis, nanorod spheres in the powder form were simultaneously produced with nanorod arrays grown on polyethylene terephthalate (PET) substrates. The syntheses were performed in water or ethanol with limited temperature at 80 ◦C and 200 ◦C. A simple and low-cost approa...

Journal: :ChemSusChem 2011
Troy K Townsend Erwin M Sabio Nigel D Browning Frank E Osterloh

Layered K(4)Nb(6)O(17) is a known UV-light-driven photocatalyst for overall water splitting, with a band gap of 3.5 eV. Following ion exchange and exfoliation with tetrabutylammonium hydroxide, the layered material separates into nanosheets that coil into 1.0±0.5 μm long and 10±5 nm wide nanoscrolls to reduce their surface energy. Pt and IrO(x) (x=1.5-2) nanoparticles were photochemically depos...

Journal: :Small 2015
Dali Shao Jian Gao Guoqing Xin Yiping Wang Lu Li Jian Shi Jie Lian Nikhil Koratkar Shayla Sawyer

An environmentally friendly, low-cost, and large-scale method is developed for fabrication of Cl-doped ZnO nanowire arrays (NWAs) on 3D graphene foam (Cl-ZnO NWAs/GF), and investigates its applications as a highly efficient field emitter and photocatalyst. The introduction of Cl-dopant in ZnO increases free electrons in the conduction band of ZnO and also leads to the rough surface of ZnO NWAs,...

Journal: :Materials Chemistry and Physics 2022

In this study, iron oxide cocatalysts were deposited on the surface of ZnO nanostructures by a simple “drop, evaporation, calcination” method. Different deposition concentrations studied, allowing to extend photocatalyst absorption spectral range from UV visible light, improving photocatalytic efficiency under natural sunlight. An optimal concentration 0.06% molar percentage against zinc led im...

Journal: :journal of physical & theoretical chemistry 2015
n. badalpoor m. giahi s. habibi

in this paper, the photocatalytic degradation of lidocaine hcl, an anesthetic was investigated inaqueous solution using cuo/zno as a photocatalyst. the degradation was studied under differentconditions including the amount of the photocatalyst, irradiation time, initial concentration of drug,ph of the system, initial concentration, addition of oxidant on the reaction rate and anion presence.the...

Journal: :Applied Catalysis B-environmental 2021

A facile development of highly efficient photocatalytic nanostructures for solar fuel production via controlled cocatalyst deposition is described. 2 nm-Pt nanoparticles were selectively synthesized by radiolysis on polypyrrole (PPy), TiO2 or both PPy-TiO2 (noted respectively (Pt-PPy)-TiO2, (Pt-TiO2)-PPy and Pt-(PPy-TiO2)). The PPy not only act a photosensitizer, but also as connection bridge b...

Journal: :Physical chemistry chemical physics : PCCP 2017
Thuniki Naveen Reddy Gousia Begum Rohit Kumar Rana

Herein, we report a polyamine-mediated assembly to integrate graphene oxide (GO) sheets with Ag/AgCl to fabricate a hybrid nanocomposite (GO-Ag/AgCl) at nearly neutral pH and ambient temperature. Inspired by the role of polyamines in the excellent integration of components to generate hierarchical nanostructures in biominerals such as diatoms, we showed that our strategy enabled the fabrication...

2015
Qinqin Zhao Dianxing Ju Xiaolong Deng Jinzhao Huang Bingqiang Cao Xijin Xu

The morphology of SnO2 nanospheres was transformed into ultrathin nanosheets assembled architectures after Zn doping by one-step hydrothermal route. The as-prepared samples were characterized in detail by various analytical techniques including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and nitrogen adsorption-desorption technique. The Z...

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