Comparison of catalytic activity of carbon-based AgBr nanocomposites for conversion of CO2 under visible light

Alternative photocatalysts to TiO 2 for the photocatalytic reduction of CO 2

“…Besides, the effect of several carbonaceous supporting materials, such as GP, EG, AC and GP, and the effect of pH of the aqueous suspension on the photocatalytic activity, was studied. It was demonstrated that the use of GP and CNTs led to the optimum photocatalytic efficiencies because of their excellent electric conductivity [153][154].…”

CO2Reduction Characteristics of Cu/TiO2with Various Reductants

“…Recently, studies on CO 2 photochemical reduction by TiO 2 have been carried out from the viewpoint of performance promotion by extending absorption wavelength toward visible region. It was reported that a transition metal doping is useful technique for extending the absorbance of TiO 2 into the visible region [11][12][13][14][15]. Noble metal doping such as Pt, Pd, Au and Ag [11], Au, Pd-three dimensionally ordered macroporous TiO 2 [12], composition materials formed by GaP and TiO 2 [13], nanocomposite CdS/TiO 2 combining two different band gap photocatalysts [14], and carbon-based AgBr nanocomposited TiO 2 [15], had been attempted to overcome the shortcomings of the pure TiO 2 .…”

“…It was reported that a transition metal doping is useful technique for extending the absorbance of TiO 2 into the visible region [11][12][13][14][15]. Noble metal doping such as Pt, Pd, Au and Ag [11], Au, Pd-three dimensionally ordered macroporous TiO 2 [12], composition materials formed by GaP and TiO 2 [13], nanocomposite CdS/TiO 2 combining two different band gap photocatalysts [14], and carbon-based AgBr nanocomposited TiO 2 [15], had been attempted to overcome the shortcomings of the pure TiO 2 . They could improve the CO 2 reduction performance; however, the concentrations in the products achieved in all the attempts so far were still low, ranging from 1 to 150 μmol/g-cat [11][12][13][14][15][16].…”

“…Though various metals have been used for doping [11][12][13][14][15][16], Cu is considered as a favorite candidate. Cu can extend the absorption band to 600-800 nm [17,18], which covers the whole visible light range.…”

Impact of Pd Loading on CO2 Reduction Performance over Pd/TiO2 with H2 and H2O

“…Doping precious metals such as Pt [7], Ag [8], Au [9], Cu [10,11], using composite materials formed by GaP and TiO 2 [12], combining CdS/TiO 2 in order to utilize two photocatalysts that have different band gaps [13], adding carbonbased AgBr nanocomposites into TiO 2 [14], sensitizing CuInS 2 and TiO 2 hybrid nanofibers [15], and preparing a procedure of TiO 2 using two alcohols (ethanol and isopropyl alcohol) and supercritical CO 2 [16] are some of the attempts to promote the performance of TiO 2 . Though the CO 2 reduction performance was improved to a certain degree in these attempts, the concentrations of the products were still low, which were ranging from 1 to 150 μmol/g-cat [7][8][9][10][11][12][13][14][15][16]. www.videleaf.com Among various metals that have been used for doping, Pd is considered as a favorite candidate [17][18][19], since Pd can extend the absorption band to 400-800 nm [20,21], which covers the whole visible light range.…”