MXene-derived TiO2/MXene-loaded Ag for the degradation of the methyl orange

Abstract

The photodegradation technology can improve the status quo of environmental problems seriously which hindered the development and progress of human society. In this work, the two-dimensional transition metal carbide Ti 3 C 2 was prepared by HF etching of Ti 3 AlC 2 , and subsequently TiO 2 crystals were produced by hydrothermal method to prepare TiO 2 /Ti 3 C 2 composite. The Ag nanoparticles were then doped by photoreduction to form a ternary Ag/TiO 2 /Ti 3 C 2 composite. The effect of photocatalytic degradation of the methyl orange solution by Ag/TiO 2 /Ti 3 C 2 was investigated. The degradation only with Ag/TiO 2 /Ti 3 C 2 is worser than TiO 2 /Ti 3 C 2 , so H 2 O 2 was added to improve the catalytic ability and explore the photocatalytic mechanism. In 420 min, the degradation efficiency of methyl orange (MO) solution reached 71.09% due to the active-free radicals preventing the recombination of electron hole pairs to improve the catalytic performance of photocatalytic materials.

Enhanced Photocatalytic Activity of V2C MXene-Coupled ZnO Porous Nanosheets with Increased Surface Area and Effective Charge Transfer

“…Recently, a new two-dimensional nanomaterial called MXene has been proposed as an effective co-catalyst because of its special morphology, exposed metal potential, and good electrical conductivity [ 23 , 24 , 25 ]. MXene has been successfully applied as a co-catalyst in TiO 2 [ 26 ], BiOCl [ 27 ], g-C 3 N 4 [ 28 ], and these composites exhibited better photocatalytic performance. ZnO/MXene hybrids with a graded flower-like structure in our previous work [ 29 ] also showed excellent photocatalytic activity due to 2D/2D heterostructure with efficient charge transfer.…”

SYNTHESIS OF DIFFERENT METAL DOPED ZnAl-LDH/PVA NANOCOMPOSITES FOR ADSORPTION AND PHOTOCATALYTIC APPLICATIONS

“…They are classified based on different criteria like sheets layered nanostructures, films, nano-patterned surfaces, and coatings [1]. Graphene [2,3], graphene oxide (GO) [4], Mxenes [5], silicate clays [6], hydroxides, and layered double hydroxides (LDHs) [7], [8], some of transition metal chalcogenides [9][10][11], some of transition metal oxides (TMOs) or mixed metal oxide (MMO) [12,13], black phosphorus nanosheets (BPN), Boron and boron nitride nanosheet, antimonene (AM) and antimonene oxide nanosheet [14] are sheet-like layered nanostructures possess excellent physical, mechanical, chemical and biochemical properties due to structures, high surface area and surface charge. In order to obtain new physicochemical properties in nanomaterials, new 2D nanomaterials are currently being synthesized in science, or modification of known nanostructures is being carried out.…”