The study on preparation and the effect of adsorption over photocatalytic activities of Cu2O/titanate nanotubes (Cu2O/TNTs)

Green synthesis of 1,2,3‐triazoles via Cu2O NPs on hydrogen trititanate nanotubes promoted 1,3‐dipolar cycloadditions

“…In addition, there are three peaks with 2θ values at 36.6, 42.2 and 61.7 in Cu 2 O/HTNT‐7, corresponding to (111), (200) and (220) crystal planes of Cu 2 O, respectively (JCPDS No. 88–1175) . Obviously, Cu and CuO phases are not present in Cu 2 O/HTNT‐7.…”

“…XRD pattern of HTNT shows a series of weak and broad diffraction peaks with 2θ values 24.5 (202), 27.7 (112) and 48.6 (303), corresponding to the monoclinic H 2 Ti 3 O 7 structure (JCPDS No. 47–0561) . The specific diffraction peak at 2θ = 10.0 (001) depicts the presence of layered crystal structure.…”

Enhanced Photocatalytic Activity by Cu2O Nanoparticles Integrated H2Ti3O7 Nanotubes for Removal of Mercaptan

“…Semiconductor layered photocatalysts are intended to be one alternative e®ective method supplementary to reduce the sul¯des to a minimum. Some photocatalysts have been explored for desulfurization, such as KTiNbO 5 , 13,14 18 etc. Therefore, they become excellent photocatalytic functional materials for photodegradation of organic pollutants.…”

“…[18][19][20] Titanate nanotubes in recent decades attracted wide attention for their remarkable properties of high speci¯c area, rich surface hydroxyl groups, adsorbing performance and high photocatalytic activity under UV light irradiation. [21][22][23][24] However, titanates have a relatively wide band gap and are utilized only under UV light, thus the photocatalytic activity has limitation.…”

“…In particular, Cu 2 O is an environment-friendly, less toxic and cheap p-type semiconductor material with narrow band gap (E g ¼ 2:00 eV). 18 However, when Cu 2 O is used as a photocatalyst, it is a limitation that the electrons and holes excited by light cannot be transferred e±ciently and are easy to recombine. The composite of Cu 2 O with other semiconductors has been the most e®ective means to form a heterojunction structure, [25][26][27] excited electrons may transfer from the conduction band of Cu 2 O to that of H 2 Ti 3 O 7 nanotube through the heterojunction structure under visible light irradiation, leaving behind the holes on the activated semiconductor (Cu 2 O) valence band.…”