Salt templated synthesis of NiO/TiO2 supported carbon nanosheets for photocatalytic hydrogen production

Binary Ni2P/Ti3C2 Multilayer Cocatalyst Anchored TiO2 Nanocomposite with Etchant/Oxidation Grown TiO2 NPs for Enhancing Photocatalytic H2 Production

“…Several reports are available on the efficiency enhancement for hydrogen production with the use of a metal as a cocatalyst coupled with a semiconductor. Zhao et al investigated NiO/TiO 2 supported on carbon nanosheets for photocatalytic hydrogen production and observed an 18-fold enhanced H 2 yield over that using only a TiO 2 /carbon photocatalyst. Similarly, a Ni 2 P cocatalyst with TiO 2 enabled 2-fold increased H 2 yield in comparison to that using pristine TiO 2 .…”

“…Global warming due to increases of flared gas (methane) and CO 2 level in the atmosphere with increasing energy demands over the years is the main threat the world is facing. , Renewable H 2 production through photocatalysis plays a vital role in providing cleaner energy for a sustainable environment. − In this development, efficient and stable photocatalysts are highly demanded. Titanium dioxide (TiO 2 ), among the oxide semiconductors, has been extensively studied due to its several advantages such as being less expensive, having chemical resistance, possesing a superior thermal stability, and having an excellent oxidation potential . However, TiO 2 yields lower amounts of H 2 because of surface charge carrier recombination in addition to activity only through UV-light irradiation …”

γ-Valerolactone Production from Levulinic Acid Hydrogenation Using Ni Supported Nanoparticles: Influence of Tungsten Loading and pH of Synthesis

“…All these factors contributed to the formation of Ti 3+ species to compensate for charges generated by the elimination of hydroxyl groups, producing oxygen vacancies O 2− , and these binding energies are observed in Figure 15 at values of 457.4 eV and 462.6 eV belonging to the Ti2p 3/2 and Ti2p 1/2 species for Ti 3+ . These charge transfers can leave deficient areas on the surface, originating unstabilized according to the binding energy difference of 5.6 eV, the Anatase phase is confirmed [117,118].…”

“…The displacement to higher eV could be due to the chemical environment produced by the oxygen vacancies generated by H2 treatment; these defects generate a negative charge deficit that is compensated by the decrease in positive charge, that is, forming Ti 3+ ions which actually act as electron donors, and in turn, new Ti-O-W bonds are generated with WO3 to stabilize the charges, demonstrating a decrease in the charge density on the Ti and Al atoms due to the bonding with WO3 [123] with charges of less than 1 and 3% by weight of The Ti2p spectrum was analyzed using a Gaussian-Lawrencian curve with a shirley background where a main peak was found at 458 eV, presenting a FWHM value higher than 2 eV, which indicates the existence of not only the Ti 4+ species. Two doublets located at 458.7 eV and 464.3 eV that belong to the Ti2p 3/2 -Ti2p 1/2 Ti 4+ species were identified; according to the binding energy difference of 5.6 eV, the Anatase phase is confirmed [117,118].…”

g-C3N4 Sensitized by an Indoline Dye for Photocatalytic H2 Evolution

“…Without relying on fossil fuels, photocatalytic water splitting is promising for producing clean H 2 [3,4]. Many photocatalysts, such as CdSe/ZnSe [5], Ag/TiO 2 [6], NiO/TiO 2 [7], TiO 2 /Bi 2 O 3 [8], MoS 2 /CdS [9], ZnS/Cu 3 P [10], Co 2 P/ZnIn 2 S 4 [11], Bi 2 WO 6 /ZnIn 2 S 4 [12], and BaTaO 2 N/Pt [13], were used for photocatalytic H 2 evolution under visible light.…”