Kinetic analysis of p-rGO/n-TiO2 nanocomposite generated by hydrothermal technique for simultaneous photocatalytic water splitting and degradation of methylene blue dye

Ternary Graphene Oxide and Titania Nanoparticles-Based Nanocomposites for Dye Photocatalytic Degradation: A Review

“…This is carried out in solution, assisted by magnetic stirring or ultrasound; as highlighted by Leary [ 44 ], this method is both praised (due to its simplicity) and criticized (due to the low level of interaction between the components). Other methods involve the in situ synthesis of TiO 2 using the above discussed methods (sol-gel [ 57 ], solvothermal/hydrothermal [ 58 , 59 ]) in the presence of an aqueous solution of previously prepared GO (most reports synthesize GO using the Hummers’ method or one of its variants). These wet-chemistry methods also promote the reduction of graphene oxide during the preparation of the composites, some authors intentionally add steps during the synthesis to reduce GO.…”

A highly sensitive room temperature liquefied petroleum gas (LPG) sensor with fast response based on a titanium dioxide (TiO2)–reduced graphene oxide (r-GO) composite

“…Tin oxide decorated rGO, reported by Mao et al, is one of the earliest such materials, where the sensor showed decent activity in sensing an oxidizing gas (NO 2 ) but its response was lower than that of rGO for a reducing gas such as NH 3 . 39 Coupling r-GO with TiO 2 has been a productive strategy in various applications such as photocatalysis where the sp 2 hybridized sheets act as both an electron receptor and electron transporter, thus preventing excessive recombination of photogenerated charge carriers; 33,[40][41][42] heavy ion removal where the wrinkled and squiggled sheets create efficient contact of the metal oxide nanoparticles along with preventing their agglomeration, thus enhancing their activity; 43 nitrogen fixation to NH 3 where the TiO 2 -rGO hybrid nanocomposite has a lower charge transfer resistance and faster kinetics during the electrocatalysis reaction; electrochemical sensing of ions such as nitrite 44 and hormone ingredients such as epinephrine; 45 high voltage supercapacitors; [46][47][48] antimicrobial and self-cleaning coatings of textile materials; 49 dye-sensitized solar cells where applying r-GO as an interfacial layer between the substrate and TiO 2 resulted in enhanced charge transfer and reduced carrier recombination; 50 water splitting reaction; 51 binders in cement where TiO 2 helps in the dispersibility of r-GO, 52 etc.…”