Enhanced Solar CO2 Photoreduction to Formic Acid by Platinum Immobilization on Bipyridine Covalent Triazine Framework with Defects

被引:2
作者
Kaya, Kerem [1 ,2 ]
Ditz, Daniel [3 ]
Jaworski, Aleksander [4 ]
Chen, Jianhong [4 ]
Monti, Susanna [5 ]
Barcaro, Giovanni [6 ]
Budnyk, Serhiy [7 ]
Slabon, Adam [8 ]
Palkovits, Regina [3 ,9 ]
机构
[1] Istanbul Tech Univ, Dept Chem, TR-34469 Istanbul, Turkiye
[2] Stockholm Univ, Dept Environm Chem MMK, S-10691 Stockholm, Sweden
[3] Rhein Westfal TH Aachen, Inst Tech & Macromol Chem, D-52074 Aachen, Germany
[4] Stockholm Univ, Dept Mat & Environm Chem MMK, S-10691 Stockholm, Sweden
[5] Inst Organometall Cpds, CNR ICCOM, I-56124 Pisa, Italy
[6] Inst Chem & Phys Proc, CNR IPCF, I-56124 Pisa, Italy
[7] AC2T Res GmbH, A-2700 Wiener Neustadt, Austria
[8] Univ Wuppertal, Chair Inorgan Chem, D-42119 Wuppertal, Germany
[9] Max Planck Inst Chem Energy Convers, D-45470 Mulheim An Der Ruhr, Germany
基金
瑞典研究理事会;
关键词
CO2; reduction; covalent triazine frameworks; formic acid; photocatalysts; platinum nanoparticles; solar simulation; HYDROGEN EVOLUTION; ELECTROCHEMICAL REDUCTION; NMR-SPECTROSCOPY; PHOTOCATALYSTS; ADSORPTION; COMPLEXES; OXIDATION; METHANOL;
D O I
10.1002/adsu.202300071
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The immobilization and structural analysis of platinum nanoparticles on a nitrogen-rich, bipyridine-containing covalent triazine framework (bpyCTF) having structural defects are disclosed by taking advantage of N-15 solid-state nuclear magnetic resonance measurements at natural N-15 isotope abundance and X-ray photoelectron spectroscopic analyses. The photocatalyst (Pt@bpyCTF) with structural defects reduces CO2 to formic acid (FA) at a rate of 152 mu mol h(-1)g(-1) and a selectivity higher than 95% over CO and H-2 in water under simulated solar light. The presence of amine defects and the immobilization of Pt cause improvement in the photocurrent density and CO2 capture capacity (approximate to 8% by weight) despite the moderate surface area (0.54 cm(3) g(-1))of the photocatalyst. Theoretical models and density functional theory calculations are employed to investigate the possible CO2 reduction reaction (CO2RR) mechanisms. Considering the exceptional CO2 capture capacity and high FA production using only CO2-bubbled water, this work highlights the great potential of nitrogen-rich CTFs for photocatalyzed CO(2)RRs under green conditions.
引用
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页数:12
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