Tuning the turnover frequency and selectivity of photocatalytic CO2 reduction to CO and methane using platinum and palladium nanoparticles on Ti-Beta zeolites

被引：20

作者：

Blommaerts, Natan ^{[1
,5
]}

Hoeven, Nick ^{[2
]}

Esteban, Daniel Arenas ^{[3
,5
]}

Campos, Rui ^{[5
,6
]}

Mertens, Myrjam ^{[4
]}

Borah, Rituraj ^{[1
,5
]}

Glisenti, Antonella ^{[7
]}

De Wael, Karolien ^{[5
,6
]}

Bals, Sara ^{[3
,5
]}

Lenaerts, Silvia ^{[1
,5
]}

Verbruggen, Sammy W. ^{[1
,5
]}

Cool, Pegie ^{[2
]}

机构：

[1] Univ Antwerp, Dept Biosci Engn, Sustainable Energy Air & Water Technol DuEL, Groenenborgerlaan 171, B-2020 Antwerp, Belgium

[2] Univ Antwerp, Dept Chem, Lab Adsorpt & Catalysis LADCA, Univ Pl 1, B-2610 Antwerp, Belgium

[3] Univ Antwerp, Dept Phys, Electron Microscopy Mat Sci EMAT, Groenenborgerlaan 171, B-2020 Antwerp, Belgium

[4] Flemish Inst Technol Res VITO, Boeretang 200, B-2400 Mol, Belgium

[5] Univ Antwerp, NANOlab Ctr Excellence, Groenenborgerlaan 171, B-2020 Antwerp, Belgium

[6] Univ Antwerp, Dept Biosci Engn, Antwerp Xray Anal Electrochem & Speciat AXES, Groenenborgerlaan 171, B-2020 Antwerp, Belgium

[7] Univ Padua, Dept Chem Sci, Via F Marzolo 1, I-35131 Padua, Italy

来源：

CHEMICAL ENGINEERING JOURNAL | 2021年 / 410卷

关键词：

Photocatalytic CO2 reduction; FEM modeling; Nanoparticles; Zeolite Ti-beta; Surface Plasmon Resonance (SPR);

D O I：

10.1016/j.cej.2020.128234

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A Ti-Beta zeolite was used in gas phase photocatalytic CO2 reduction to reduce the charge recombination rate and increase the surface area compared to P25 as commercial benchmark, reaching 607 m(2) g(-1). By adding Pt nanoparticles, the selectivity can be tuned toward CO, reaching a value of 92% and a turnover frequency (TOF) of 96 mu mol.g(cat)(-1).h(-1),nearly an order of magnitude higher in comparison with P25. By adding Pd nanoparticles the selectivity can be shifted from CO (70% for a bare Ti-Beta zeolite), toward CH4 as the prevalent species (60%). In this way, the selectivity toward CO or CH4 can be tuned by either using Pt or Pd. The TOF values obtained in this work outperform reported state-of-the-art values in similar research. The improved activity by adding the nanoparticles was attributed to an improved charge separation efficiency, together with a plasmonic contribution of the metal nanoparticles under the applied experimental conditions.

引用

页数：12

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