Topic
Photocatalysis
About: Photocatalysis is a research topic. Over the lifetime, 67088 publications have been published within this topic receiving 2145233 citations. The topic is also known as: photocatalyst.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, a novel iodine vacancy-rich BiOI/Ag@AgI/VI-BOI Z-scheme heterojunction photocatalyst was successfully constructed.
486 citations
TL;DR: In this paper, the structure and properties of the co-doped particles were studied by XRD, XPS, Raman, FL, and UV-diffuse reflectance spectra.
Abstract: Nanoparticles of titanium dioxide co-doped with nitrogen and iron (III) were first prepared using the homogeneous precipitation-hydrothermal method. The structure and properties of the co-doped were studied by XRD, XPS, Raman, FL, and UV-diffuse reflectance spectra. By analyzing the structures and photocatalytic activities of the undoped and nitrogen and/or Fe3+-doped TiO2 under ultraviolet and visible light irradiation, the probable mechanism of co-doped particles was investigated. It is presumed that the nitrogen and Fe3+ ion doping induced the formation of new states closed to the valence band and conduction band, respectively. The co-operation of the nitrogen and Fe3+ ion leads to the much narrowing of the band gap and greatly improves the photocatalytic activity in the visible light region. Meanwhile, the co-doping can also promote the separation of the photogenerated electrons and holes to accelerate the transmission of photocurrent carrier. The photocatalyst co-doped with nitrogen and 0.5% Fe3+ sho...
486 citations
TL;DR: The new O-Ti-B-N structure formed on the surface of the photocatalyst is highly active in collecting and separating the charge carriers, thereby greatly enhancing the visible light photocatalytic activity.
Abstract: Add an N: The visible-light absorption of boron-doped mesoporous TiO2 depends strongly on the state of the dopant (see picture), although the activity can be substantially enhanced by additional doping of nitrogen. The new O-Ti-B-N structure formed on the surface of the photocatalyst is highly active in collecting and separating the charge carriers, thereby greatly enhancing the visible light photocatalytic activity.
485 citations
TL;DR: A one-step, a one-pot, no post-synthesis calcination and no sol-gel synthesis was used for preparation of rare earth doped visible-light sensitive titania as mentioned in this paper.
485 citations
TL;DR: In this article, multi-walled carbon nanotubes (MWNTs) and graphitic carbon nitride (g-C3N4) composite photocatalysts were synthesized via a facile heating method.
Abstract: Novel multi-walled carbon nanotubes (MWNTs) and graphitic carbon nitride (g-C3N4) composite photocatalysts were synthesized via a facile heating method. The resulting MWNTs/g-C3N4 composite photocatalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), ultraviolet–visible diffuse reflection spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and photoluminescence (PL) spectroscopy. The photoelectrochemical I–t curves were tested using several on–off cycles of visible light irradiation. The visible light photocatalytic hydrogen evolution was investigated for MWNTs/g-C3N4 in methanol aqueous solutions. The optimal MWNTs content is determined to be 2.0 wt%; and corresponding H2 evolution rate is 7.58 μmol h−1, about 3.7 folds that of pure g-C3N4. A possible mechanism of MWNTs on the enhancement of visible light performance is proposed. It suggests that MWNTs play key roles, which may lead to efficiently separation of the photo-generated charge carriers and, consequently, enhance the visible light photocatalytic H2 production activity.
484 citations