Ag2S quantum dots and N3 dye co-sensitized TiO2 nanotube arrays for a solar cell

Synthesis of Ag2S–TiO2 nanocomposites and their catalytic activity towards rhodamine B photodegradation

“…Xie et al [25] have reported that Ag 2 S QDs-sensitized TiO 2 nanotube arrays absorb in the region, 400-650 nm. Ji et al [27] have reported the diffuse reflectance spectra of TiO 2 nanotube arrays, Ag 2 S, N3 dye and Ag 2 S and N3 sensitized TiO 2 nanotube arrays. Compared to the pristine TiO 2 , the absorption of Ag 2 S, N3 and Ag 2 S & N3 dye sensitized TiO 2 nanotube arrays is significantly enhanced in the visible region.…”

“…Ag 2 S-TiO 2 nanocomposites have been prepared by different synthetic methods which involve two steps. For example, electrochemical anodization of Ti foil for the formation titanium oxide nanotube arrays followed by sequential chemical bath deposition of Ag 2 S [13,[25][26][27], hydrothermal method for the preparation of titanium oxide nanotube arrays followed by photodeposition of Ag 2 S [28], electrochemical anodization of Ti foil for titanium nanotube arrays followed by photodeposition of Ag 2 S [24], refluxing mixture of precursors under nitrogen atmosphere followed by ultrasound irradiation [21], sol-gel method for TiO 2 followed by M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 4 subsequent (SILAR) process for Ag 2 S deposition [29], hydrothermal method for titanium nanotube arrays followed by SILAR method [19], sol-gel method for TiO 2 followed by thermal decomposition [16,30], electrochemical anodization of Ti foil for titanium oxide nanotube arrays followed by deposition of Ag-Ag 2 S nanoparticles on TiO 2 by hydrothermal method [31] and electrochemical anodization of Ti foil for titanium oxide nanotube arrays followed by electrodeposition of Ag nanoparticles and in situ sulfurization leading to Ag 2 S deposition [32].…”

Enhanced charge-carrier transfer by CdS and Ag2S quantum dots co-sensitization for TiO2 nanotube arrays

“…In previous studies, we have prepared photoelectrodes based on Ag 2 S sensitized TNAs using pulse electrodeposition/in situ vulcanization and successive chemical bath deposition [13,29]. The hydrogen conversion efficiency or photoelectron conversion efficiency of the devices are much higher than the un-sensitized ones.…”

Photon Absorption Enhancement of TiO2 Nanotube Arrays Decorated with Aluminum Nanoparticles

“…As Al2O3 fraction increases, the scattering efficiency decreases. That is to say, for Al nanostructures of the same geometry with the same native oxide shell, the core Al2O3/Al fraction is a fundamental element of the optical response [25]. These findings imply that the need of reproducible Al-based UV plasmonic nanostructures is fabrication in a pristine environment to minimize the deleterious effects of the bulk metal oxide.…”