Photocatalytic degradation of ammonia by light expanded clay aggregate (LECA)-coating of TiO2 nanoparticles

Enhanced Photocatalytic Degradation and Mineralization of Furfural Using UVC/TiO2/GAC Composite in Aqueous Solution

“…The results clearly indicate that an increase in photocatalyst concentration from 1 to 2.5 g/L increased furfural removal from 29.33% to 64.8% during the 40 min irradiation time ( Figure 6). Increasing the catalyst dosage increased turbidity of the suspension and UV light penetration decreased as a result of the increased scattering effect, decreasing photoactivation efficiency [58][59][60]. Because the most effective removal…”

Building heterogeneous nanostructures for photocatalytic ammonia decomposition

“…TiO 2 is one of the most common photocatalysts; it has good performance in many photocatalytic applications, such as water splitting, hydrogen production, carbon dioxide reduction, nitrogen oxide reduction, nitrogen xation, pollutant degradation, organic reactions, and ammonia synthesis and decomposition. 31,42,[65][66][67][68][69][70][71][72][73][74] Three crystal types of TiO 2 , including anatase type, rutile type and plate titanium type, exist in nature, with bandgap widths of 3.0, 3.2 and 3.25 eV, respectively. 75 Bare TiO 2 shows lower photocatalytic activity in ammonia decomposition due to the reactive energy barrier.…”

PHOTOCATALYTIC ACTIVITY OF TiO2/SiO2 PREPARED FROM SILICA CONTAINED IN VOLCANIC ASH FOR AMMONIA REMOVAL

“…11,[23][24] The ammonia pollution in the water can originate from the biodegradation of crop residues 11,23 as well as wastewater and industrial effluents of fertilizers, dyes, metal plating, herbicides, pesticides, industrial solvents, chemical, industrials and petrochemical 24. Ammonia has notable as a major threat both to the environment and human health when it is in the presence of excess amounts. [23][24] The environmental problems created by excessive ammonia are eutrophication, depletion of dissolved oxygen and toxicity to fish and other aquatic organisms. 23 Thus, the prevention of ammonia environmental pollution by eliminating the ammonia in wastewater before entering the rivers is urgently required.…”