Inhibit the formation of toxic methylphenolic by-products in photo-decomposition of formaldehyde–toluene/xylene mixtures by Pd cocatalyst on TiO2

Catalytic Role of Metal Nanoparticles in Selectivity Control over Photodehydrogenative Coupling of Primary Amines to Imines and Secondary Amines

“…The metal serves as an active site for the reduction of protons into surface adsorbed H atoms (H ads ); thus, optimizing the adsorption energy of H ads is a vital parameter in designing high-performance photocatalysts for H 2 evolution . Noble metal NPs are also essential for the rapid dissociation of O 2 into oxygen radical species, thus promoting the complete photo-oxidation of harmful organics. , A recent study shows that Pd NPs inhibit the formation of toxic intermediates in the photodecomposition of formaldehyde–toluene mixtures . It has been also found that, in photocatalytic CO 2 reduction, Rh NPs facilitate the C–O bond dissociation of CO 2 and hydrogenation of photogenerated CO into methane …”

“…19,20 A recent study shows that Pd NPs inhibit the formation of toxic intermediates in the photodecomposition of formaldehyde− toluene mixtures. 21 It has been also found that, in photocatalytic CO 2 reduction, Rh NPs facilitate the C−O bond dissociation of CO 2 and hydrogenation of photogenerated CO into methane. 22 The recently arising application of photocatalysis in synthetic chemistry brings new challenges in catalyst design, where selectivity control is probably an even more important criterium than reaction rate.…”

Recent Advances on Porous Materials for Synergetic Adsorption and Photocatalysis

“…It has been acknowledged that cocatalysts could extract photogenerated charge carriers, host active sites, and/or improve the stability of photocatalysts by suppressing photocorrosion. [167] Noble metals such as Pt, [168][169][170] Au, [171][172][173] Pd, [174][175][176] Ru, [177,178] Rh, [179,180] and Ag [181,182] have been widely used as cocatalysts, especially in photocatalytic water splitting systems. For instance, the porous TiO 2 nanotubes with Pt and CoO x cocatalysts (CoO x /TiO 2 /Pt) were fabricated for photocatalytic H 2 production (Figure 17).…”

Synthesis of Water-Soluble Cadmium Selenide/Zinc Sulfide Quantum Dots on Functionalized Multiwalled Carbon Nanotubes for Efficient Covalent Synergism in Determining Environmental Hazardous Phenolic Compounds

“…The existence of phenols in the environment of both anthropogenic and natural origin is due to its versatile applicability in domestic, agriculture, and industrial activities. These compounds creep into the ecosystem resulting from the drainage off the industrial or municipal sewage onto the aquatic surface, thus causing great disparity in the ecological balance. , These compounds on entering the waterbodies transform into even more harmful moieties. Phenol and its derivatives were among the first to be listed as a priority pollutant by the US Environment Protection Agency (US EPA) and the European Union (EU) due to their high chemical stability, solubility, and prolonged degradation time and pose short-time and long-time toxic threats to humans and animals.…”