Synthesis of Ag-decorated porous TiO2 nanowires through a sunlight induced reduction method and its enhanced photocatalytic activity

Recent Progress on Titanium Dioxide Nanomaterials for Photocatalytic Applications

“…Amonga ll the noble metals,A gi sp romising for extensive applications because of its low cost, facile preparation, and antibacterial properties. [76,178] Figure 10 a, bd isplays an example of the top-and side-view SEM images of vertically alignedT iO 2 nanotube arrays uniformly decorated with plasmonic Ag nanoparticles. [76,[179][180][181][182] The deposition of Ag nanoparticles can largely preventt he recombination of photoinduced electron-hole pairs in TiO 2 .O n the other hand, the introduction of Ag leads to ar edshift in the TiO 2 absorption edge wavelength and, thus, to an enhancement in the photocatalytic activity of TiO 2 under visiblelight irradiation.…”

“…[76,[179][180][181][182] The deposition of Ag nanoparticles can largely preventt he recombination of photoinduced electron-hole pairs in TiO 2 .O n the other hand, the introduction of Ag leads to ar edshift in the TiO 2 absorption edge wavelength and, thus, to an enhancement in the photocatalytic activity of TiO 2 under visiblelight irradiation. [76,178] Figure 10 a, bd isplays an example of the top-and side-view SEM images of vertically alignedT iO 2 nanotube arrays uniformly decorated with plasmonic Ag nanoparticles. The highly uniform Ag nanoparticles are dispersed on both the inside and outside of the vertically aligned TiO 2 nanotubes.…”

Effects of Ag0-modification and Fe3+-doping on the structural, optical and photocatalytic properties of TiO2

“…3(d), the peaks at 367.6 eV and 373.5 eV can be assigned to Ag 3d 5/2 and Ag 3d 3/2 , respectively, which suggests that the Ag element exists as Ag 0 in the sample. 34,41,42 Two peaks at 711.1 eV and 723.7 eV in Fig. 3(e) attribute to Fe 2p 3/2 and Fe 2p 1/2 , which indicates Fe element exists as Fe 3+ .…”

Synthesis and photocatalytic properties of three dimensional laminated structure anatase TiO2/nano-Fe0 with exposed (001) facets

“…However, nano-TiO 2 grains have the defects of low visible light utilization, easy recombination of photogenerated electrons and holes, and easy agglomeration and deactivation at nano scale. 16,17 The studies show that for a long time, the research on the design and preparation of TiO 2 semiconductor materials is the key to improve the comprehensive performance of photocatalysis. 18,19 It is the core scientic problem in the eld of TiO 2 semiconductor photocatalysis that the materials have high efficiency of excitation light response, excellent electron hole yield and separation characteristics.…”

“…[20][21][22] Therefore, scholars have carried out a series of research on the reconstruction of self structure and auxiliary modication based on the design and preparation of TiO 2 morphology and structure. 16,17,23,24 In recent years, it has been shown that with the development of crystal surface engineering, it is popular to adjust the performance of photocatalytic materials by adjusting the exposure degree of crystal surface in the study of TiO 2 structure reconstruction. 25,26 In 2008, the uniform anatase TiO 2 single crystals were synthesized with a large percentage (47%) of reactive (001) facets using hydrouoric acid as a morphology controlling agent.…”