Review on noble metal-based catalysts for formaldehyde oxidation at room temperature

Mild Preoxidation Treatment of Pt/TiO2 Catalyst and Its Enhanced Low Temperature Formaldehyde Decomposition

“…As for the influence of the chemical valence, the XPS and CO-DRIFTS results have proved the coexistence of metallic and cationic Pt species in various pre-oxidized Pt/TiO 2 catalysts. In terms of the monometallic catalyst, most of the research viewpoints support that the metallic species rather than the cationic one are the real active sites of the HCHO decomposition [11,16]. In this case, the pristine Pt/TiO 2 catalyst with the pure metallic Pt has the reactivity of low-temperature HCHO decomposition.…”

“…It indicates that the pre-oxidation treatment could moderately increase the ability of oxygen activation of the Pt/TiO 2 catalyst. Generally, O II and OHare considered to be the active species of HCHO decomposition reaction [10,11]. This could account for the excellent HCHO decomposition performance of Pt/TiO 2 -O200.…”

“…Different from the other two strategies, the optimization of the preparation process does not change the original composition of the catalyst, which is usually the primary mission of catalyst development. Especially important for the thermal treatment process, it would determine the HCHO decomposition performance of noble metal catalysts due to the direct influence of their several structural parameters [10][11][12]. Firstly, the size of the noble metal particles was easily influenced by calcination temperature and atmosphere, which directly determined the quantity of the active sites [13].…”

Structural and Magnetic Properties of FePd Thin Film Synthesized by Electrodeposition Method

“…Bimetallic nanomaterials, composed by a noble element and a magnetic metal, have attracted a growing interest in the scientific community because they show together the properties of both metals in addition to confinement effects [1][2][3][4]. Noble metals play a central role in the area of catalysis [5,6]; whereas the magnetic metal elements (Fe, Co, Ni) with specific magnetic properties offer the possibility to easily recover and reuse the bimetallic nanostructured catalysts after the completion of the reaction and/or the chemical processes [7,8]. In particular, the magnetic separation process provides a practical and useful technique for recycling the magnetic nanostructured catalysts [7,8].…”

Facile preparation, characterization, and formaldehyde elimination performance of MnOx/natural loofah composites

“…Among these methods, catalytic oxidation of HCHO into CO 2 and H 2 O is recognized as the most promising method owing to its high HCHO removal efficiency, lack of toxic byproduct and secondary pollution, and no extra energy consumption. 14,15 A variety of catalysts such as supported noble metals [16][17][18][19][20] and transition metal oxides [21][22][23][24] have been utilized for HCHO oxidation at room temperature. Although supported noble metal catalysts have shown remarkable catalytic activities at room temperature, the high cost hinders their wide application.…”