Supporting Information Pd2Ga nanorods as highly active bifunctional catalysts for electrosynthesis of acetic acid coupled with hydrogen production

Wang, Qiuxia; Liu, Junfeng; Li, Tong; Zhang, Ting; Arbiol, Jordi; Yan, Suxia; Wang, Yong; Li, Huaming; Cabot, Andreu

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Título:	Supporting Information Pd2Ga nanorods as highly active bifunctional catalysts for electrosynthesis of acetic acid coupled with hydrogen production
Autor:	Wang, Qiuxia; Liu, Junfeng; Li, Tong; Zhang, Ting CSIC; Arbiol, Jordi CSIC ORCID CVN; Yan, Suxia; Wang, Yong; Li, Huaming; Cabot, Andreu
Fecha de publicación:	15-oct-2022
Editor:	Elsevier
Citación:	Wang, Qiuxia; Liu, Junfeng; Li, Tong; Zhang, Ting; Arbiol, Jordi; Yan, Suxia; Wang, Yong; Li, Huaming; Cabot, Andreu; 2022; Supporting Information Pd2Ga nanorods as highly active bifunctional catalysts for electrosynthesis of acetic acid coupled with hydrogen production [Dataset]; Elsevier; http://doi.org/10.1016/j.cej.2022.136878
Descripción:	11 pages. -- Fig. S1. Extra structure characterization of the Pd2Ga NRs. (a,b) HRTEMmicrographand the corresponding indexed power spectrum observed along the corresponding[001] (a) and [342] (b) zone axis of the orthorhombic Pnma Pd2Ga structure. (c) STEM-EELS elemental composition maps. -- Fig. S2. XRD pattern of as-synthesized Pd2Ga using 0.2 mmol of Pd(acac)2 and0.1mmol of Ga(acac)3 in the reaction. -- Fig. S3. SEM-EDS spectrum of Pd2Ga NRs. -- Fig. S4. (a-c) CV curves of Pd2Ga/C (a), Pd/C (b) and Pt/C (c) catalysts in 0.5MKOH with a scan rate of 20, 40, 60, 80 and 100 mV s-1. (d) Linear fit of the current density at 0.156 V as a function of scan rate from 20 to 100 mV s-1. -- Fig. S5. Nyquist plots of the catalysts at 0.8 V vs. RHE in 0.5 MKOHwith 0.5Methanol solution. -- Fig. S6. Comparison of the specific and mass activity of Pd2Ga/C, Pd/Cand Pt/Ccatalysts after 12 h CA measurements. -- Fig. S7. EOR CA curves of Pd2Ga catalyst reactivated by cycling every 1000 s inathree-electrode system with 0.5 M KOH and 0.5 M ethanol as electrolyte. -- Fig. S8. (a) 1H NMR analysis of the electrolyte before and after CA measurement. (b) 1H NMR analysis of acetic acid added in KOH and KOH + ethanol solution. -- Fig. S9. Potential-time curves of the Pd2Ga/C catalyst at current densities of 10mAcm-2 in 0.5 M KOH with ethanol solution. -- Fig. S10. Comparison of the current density of Pd2Ga/C, Pd/C and Pt/C catalysts after 15 h CA measurements in the two-electrode coupled system. -- Fig. S11. XRD Pattern (a) and TEM images of Pd2Ga/C in cathode (b) and anode (c) of the two-electrode electrolyzer after long-term stability measurement. -- Fig. S12. crystal structural models of Pd (111) and Pd2Ga (211). -- Fig. S13. DFT calculated models of Pd (a) and Pd2Ga (b) active sites with adsorbedreactive species from different EOR reaction states. -- Fig. S14. (a) CV curves of the catalysts in 0.5 M H2SO4 with 0.5 Methanol solution. (b) Polarization curves of catalysts in 0.5 M H2SO4 with 0.5 Methanol solution. (c) LSV curves of the assembled cells in 0.5 M H2SO4 with 0.5 Methanol solution. (d) CA measurements of the assembled cells at 1.0 V in 0.5 M H2SO4 with 0.5 Methanol solution. -- Fig. S15. DFT calculated models of OH- adsorbed on different sites of Pd2Ga (211) surface. -- Table S1. Comparison of specific activity, mass activity and stability of Pd- or Pt-based catalysts for EOR in alkaline media.
Versión del editor:	http://doi.org/10.1016/j.cej.2022.136878
URI:	http://hdl.handle.net/10261/332071
DOI:	10.1016/j.cej.2022.136878
Referencias:	Wang, Qiuxia; Liu, Junfeng; Li, Tong; Zhang, Ting; Arbiol, Jordi; Yan, Suxia; Wang, Yong; Li, Huaming; Cabot, Andreu. Pd2Ga nanorods as highly active bifunctional catalysts for electrosynthesis of acetic acid coupled with hydrogen production. http://doi.org/10.1016/j.cej.2022.136878. http://hdl.handle.net/10261/279000
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