Sustainable hybrid photocatalysts: titania immobilized on carbon materials derived from renewable and biodegradable resources

Abstract

The preparation, properties and heterogeneous photocatalytic applications of TiO2 immobilized on carbon materials derived from earth-abundant, renewable and biodegradable agricultural residues and sea food waste resources are reviewed.

Simultaneous Control over Lattice Doping and Nanocluster Modification of a Hybrid CuOx/TiO2 Photocatalyst during Flame Synthesis for Enhancing Hydrogen Evolution

“…[4] In order to induce visible light activity into normally purely UV-active TiO 2 , thus enabling its activation for photocatalytic processes also by visible light, a number of TiO 2 -based hybridization strategies were proposed, especially transition metal doping. [5][6][7] The effect of doping on the activity depends on many factors, for example, the method of doping, and the type and the concentration of dopant. [8] When transition metal ions such as V, Fe, and Cu, etc.…”

An Efficient Photocatalyst Based on Black TiO2 Nanoparticles and Porous Carbon with High Surface Area: Degradation of Antibiotics and Organic Pollutants in Water

“…For example, TiO 2 is one of the most widely used photocatalyst because of its stability towards light, low cost, and environmental friendliness . Nevertheless, using pure TiO 2 to degrade organic pollutants possesses a particularly disadvantage in that the wide band gap (3.0–3.2 eV) results in a response to UV light and poor efficiency . To solve this crucial problem, recently, black TiO 2 has attracted much attention because of the existence of oxygen vacancies and Ti 3+ which significantly promote photocatalytic performance .…”

“…[8][9][10] Nevertheless, using pure TiO 2 to degrade organic pollutants possesses a particularly disadvantage in that the wide band gap (3.0-3.2 eV) results in a response to UV light and poor efficiency. [11][12] To solve this crucial problem, recently, black TiO 2 has attracted much attention because of the existence of oxygen vacancies and Ti 3 + which significantly promote photocatalytic performance. [13][14][15] Therefore, many research groups have focused on the removal of water-soluble organic pollutants and the photocatalytic splitting of water using black TiO 2 and, nowadays, most study are focused on simplifying the preparation process and analyzing the relationship of morphology and catalytic performance.…”

Oxygen‐Deficient Dumbbell‐Shaped Anatase TiO2−x Mesocrystals with Nearly 100 % Exposed {101} Facets: Synthesis, Growth Mechanism, and Photocatalytic Performance

“…[10,11] Moreover,t he rapid recombination of photoexcited electrons and holes causes relativelyl ow quantume fficiencies of TiO 2 in photocatalytic applications. [12][13][14] Therefore, it is demanding to manipulatet he structural, morphological, and opticalp roperties of TiO 2 to realize broadened light absorption and improved photoinduced charge carrier separationw ithin TiO 2 particles.…”