A new-type of semiconductor Na_0.9Mg_0.45Ti_3.55O₈: preparation, characterization and photocatalysis

Abstract

Na0.9Mg0.45Ti3.55O8 single crystal nanosheets with dominant {0 0 1} facets exhibit strong photodegradation ability for methylene blue under UV-visible light.

The enhanced photocatalytic activity of Na0.9 Mg0.45 Ti3.55 O8 co-loaded with silver and platinum

“…Then, 30-mg prepared sample pure NMTO or Ag-Pt/NMTO with 25-mL deionized water after ultrasonic processing for 10 minutes in a beaker was transferred into the quartz tube. 31 The structural schematic diagram of Ag-Pt/ NMTO photocatalyst is drawn in Figure 2C. Meanwhile, the mixture was stirred during the whole degradation process.…”

“…Pure NMTO shows a long hexagonal plate shape (Figure 2A) with cleanly defined surfaces as shown in Figure 2B. 31 The structural schematic diagram of Ag-Pt/ NMTO photocatalyst is drawn in Figure 2C. Figure 2D −F shows the HRSEM images of 7.2, 9.0, and 10.8Ag-Pt/ NMTO samples, respectively.…”

“…30 Recently, we synthesized a new-type of semiconductor Na 0.9 Mg 0.45 Ti 3.55 O 8 (NMTO) based on TiO 2 with hydrothermal method for the first time, exhibiting high photodegradation ability. 31 NMTO is a wide band gap semiconductor, limiting the solar energy utilization. In the present paper, we load noble metals Ag and Pt on NMTO surfaces via a simple chemical bath deposition method to improve the photodegradative ability.…”

Photoelectrochemical Hydrogen Production on α‐Fe2O3 (0001): Insights from Theory and Experiments

“…Furthermore, mechanistic details are known for CH 3 OH electro-oxidation due to its applications in fuel cells. [76] Electrochemical oxidation of CH 3 OH has been shown to proceed on a Pt electrode through successive dehydrogenation reactions to form *CH 2 OH, *CHOH, *COH, and *CO intermediate species to finally react with *OH to form gaseous CO 2 , [77][78][79][80] while spectroscopically the HCOO À species was identified as an intermediate on the Pd electrode in alkaline solution. [81] From simple pK a considerations, the hydroxyl moiety of CH 3 OH should be deprotonated first because it is more acidic than that of the methyl group (pK a of 15 vs. 50, respectively).…”

Two‐step hydrothermal fabrication of Na 0.23 TiO 2 nanofibers and enhanced photocatalysis after loaded with gold or silver determined by surface potentials

“…The photocatalytic technique in large‐scale wastewater treatment needs catalysts with high photocatalytic efficiency and low cost. Recently, various semiconductor photocatalysts, such as TiO 2 , BiOI, BiOBr, BiOCl, BiVO 4 , Na 0.9 Mg 0.45 Ti 3.55 O 8 , SnS 2 , and SnO 2 , have been reported. Among them, TiO 2 has been investigated widely because of its superior photocatalytic activity, chemical stability, high electron mobility, environmental friendliness, and nontoxicity .…”