2012年6月18日 · The electronic structures of formic acid (HCOOH) and formate (HCOO —) have been determined in aqueous solutions over a pH range of 1.88–8.87 using a combination of X-ray photoelectron spectroscopy (XPS), partial electron-yield X-ray absorption spectroscopy (PEY XAS), and density functional theory (DFT).

2020年2月27日 · Here, we show the first simple large-scale synthesis of free-standing Bismuthene, to our knowledge, and demonstrate its high electrocatalytic efficiency for formate (HCOO −) formation from CO 2...

2022年12月5日 · A so-called quasi-in situ XPS approach was used to explore the surface composition and speciation of the bimetallic systems giving the best CO and HCOO – performance. CO 2 electrolysis was carried out at various potentials in an O 2 -free glovebox under an inert (N 2 ) atmosphere.

2022年10月1日 · Scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) characterizations results confirmed that UNH was dispersed on the surface of Ce(HCOO) 3 and strongly interacted with it …

2017年11月1日 · Cu-Sn alloy electrodes were prepared by simple electrodeposition method for the electrochemical reduction of CO2 into CO and HCOO−. The alloy electrode surfaces provided good selectivity and efficiency in electrochemical CO2 conversion because they provided appropriate binding energies between the metal and the reactive species obtained ...

2020年8月25日 · Herein we develop a highly active non-noble-metal heterogeneous catalyst for HCOOH dehydrogenation, prepared by modulating the oxygen coverage on the surface of Ti 3 C 2 T x MXenes.

2012年7月5日 · 结合X射线光电子能谱（XPS），部分电子收率X-射线吸收光谱法（PEY XAS）和密度泛函理论（DFT）。 碳1s XPS测量显示，与中性HCOOH相比，去质子化的HCOO（-）的结合能位移为-1.3 eV。 中性HCOOH和去质子化HCOO（-）之间的区别不能仅基于相应的碳K边缘PEY XA光谱进行区分。 与pH无关，C1s→π*状态激发发生在288.0 eV，并且可能导致错误的结论，即两种物种的π*状态能级相同。 Electronic Structures of Formic Acid (HCOOH) and …

2012年7月5日 · The electronic structures of formic acid (HCOOH) and formate (HCOO (-)) have been determined in aqueous solutions over a pH range of 1.88-8.87 using a combination of X-ray photoelectron spectroscopy (XPS), partial electron-yield X-ray absorption spectroscopy (PEY XAS), and density functional theory (DFT).

The XPS C1s peaks at 284.0 eV, 286.1 eV and 295.5 eV are associated with sp 2 and sp 3 -hybridized carbon (C C and C C), hydroxyl/phenols (C OH) and carboxyl (O C O) groups, respectively.

2022年11月27日 · XPS结果表明合金中各个元素呈金属态。 HEA在碱性条件下催化CO2还原的主要产物为HCOOH，产率接近100%，有效抑制了HER，性能10小时保持稳定。 TPD结果表明HEA对CO2有较强的吸附能力。 ATR-IRAS结果表明随着 反应电位 的提高HCOO的吸附形态由双配位转变为单配位。 原文链接： doi.org/10.1002/adma.20. 关键词： 催化、CO2RR、高熵合金、HCOOH 摘要： 高熵合金具有较好的协同效应。 本文研究Pd、Cu、Au、Ag、Bi、In高熵合金 …