Phosphorus-doped TiO2 catalysts with stable anatase-brookite biphase structure: synthesis and photocatalytic performance.

Phosphorus-doped TiO2 catalysts with stable anatase-brookite biphase structure: synthesis and photocatalytic performance.

Journal of nanoscience and nanotechnology (2013-08-02)

Huajun Feng, Min-Hong Zhang, Liya E Yu

摘要

Phosphorus-doped (P-doped) TiO2 catalysts with a stable anatase-brookite biphase structure were successfully synthesized by integrating ultrasonication with phosphorus doping and Pluronic P123 surfactant. The synthesized catalysts were characterized using X-ray diffraction, transmission electron microscopy, nitrogen adsorption-desorption, Fourier transform infrared, and UV-visible diffuse reflectance spectra. Ultrasonication facilitates the appearance of brookite phase. Phosphorus doping was demonstrated an effective strategy to stabilize the anatase-brookite biphase structure and inhibits undesirable grain growth. Triblock copolymer Pluronic P123 used in the reaction facilitates the formation of catalyst particles with mesoporous structure and large surface area and prevents particles from agglomeration. The low band-gap of brookite phase enables the synthesized P-doped TiO2 catalysts outperform commercial P25 TiO2 and N-doped TiO2 in the degradation of methylene blue under both solar light and visible light irradiation.

材料

货号

品牌

产品描述

718467

Sigma-Aldrich

氧化钛（IV）, nanopowder, 21 nm primary particle size (TEM), ≥99.5% trace metals basis

637254

Sigma-Aldrich

氧化钛 (IV)，锐钛矿, nanopowder, <25 nm particle size, 99.7% trace metals basis

14027

Sigma-Aldrich

氧化钛（IV）, puriss., meets analytical specification of Ph. Eur., BP, USP, 99-100.5%

232033

Sigma-Aldrich

氧化钛 (IV)，锐钛矿, powder, 99.8% trace metals basis

14021

Sigma-Aldrich

氧化钛（IV）, ReagentPlus^®, ≥99%

224227

Sigma-Aldrich

钛 (IV) 氧化物，金红石型, powder, <5 μm, ≥99.9% trace metals basis

248576

Sigma-Aldrich

氧化钛 (IV)，锐钛矿, powder, −325 mesh, ≥99% trace metals basis

637262

Sigma-Aldrich

钛 (IV) 氧化物，金红石型, nanopowder, <100 nm particle size, 99.5% trace metals basis

343242

Sigma-Aldrich

红磷, ≥99.99% trace metals basis

634662

Sigma-Aldrich

氧化钛(IV)，金红石和锐钛矿混合物, nanopowder, <100 nm particle size (BET), 99.5% trace metals basis

366994

Sigma-Aldrich

钛, powder, <45 μm avg. part. size, 99.98% trace metals basis

04004

Sigma-Aldrich

红磷, ≥97.0%

348791

Sigma-Aldrich

钛, foil, thickness 0.127 mm, 99.7% trace metals basis

267503

Sigma-Aldrich

钛, foil, thickness 0.25 mm, 99.7% trace metals basis

700347

Sigma-Aldrich

氧化钛(IV)，金红石和锐钛矿混合物, nanoparticles, <150 nm particle size (volume distribution, DLS), dispersion, 40 wt. % in H₂O, 99.5% trace metals basis

268496

Sigma-Aldrich

钛, powder, −100 mesh, 99.7% trace metals basis

204757

Sigma-Aldrich

钛 (IV) 氧化物，金红石型, ≥99.98% trace metals basis

204730

Sigma-Aldrich

钛 (IV) 氧化物，金红石型, 99.995% trace metals basis

677469

Sigma-Aldrich

氧化钛（IV）, contains 1% Mn as dopant, nanopowder, <100 nm particle size (BET), ≥97%

460400

Sigma-Aldrich

钛, wire, diam. 0.25 mm, 99.7% trace metals basis

268526

Sigma-Aldrich

钛, sponge, 3-19 mm, 99.5% trace metals basis

369489

Sigma-Aldrich

钛, foil, thickness 2.0 mm, 99.7% trace metals basis

348848

Sigma-Aldrich

钛, foil, thickness 0.025 mm, 99.98% trace metals basis

348805

Sigma-Aldrich

钛, foil, thickness 0.5 mm, 99.99% trace metals basis

767506

Sigma-Aldrich

钛, sputtering target, diam. × thickness 2.00 in. × 0.25 in., 99.995% trace metals basis

305812

Sigma-Aldrich

钛, 5-10 mm, ≥99.99% trace metals basis (purity exclusive of Na and K content)

266035

Sigma-Aldrich

钛, wire, diam. 1.0 mm, 99.99% trace metals basis

460397

Sigma-Aldrich

钛, foil, thickness 0.127 mm, ≥99.99% trace metals basis

267481

Sigma-Aldrich

钛, foil, thickness 0.25 mm, 99.99% trace metals basis

635057

Sigma-Aldrich

钛 (IV) 氧化物，金红石型, <001>, (single crystal substrate), ≥99.9% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm