(e)二维Cu2Te纳米片的拉曼光谱。(f)Cu 2p和Te 3d的XPS谱。(g)Cu2Te样品的XANES谱。(h)Cu2Te样品的κ3加权EXAFS谱的傅里叶变换。(i)Cu2Te纳米片的ADF-STEM图像(左)和STEM-EDS元素分布图像(右)。(j)Cu2Te纳米片的SAED图像。...
图2CO2RR后,重构的Cu2P2O7催化剂的(a) SEM,(b) HADDF-STEM,(c) HRTEM图像;(c) P 2p,(d)Cu2P2O7电极在CO2RR前后的Cu LMM XPS光谱,(e)Cu2P2O7电极在 –0.8 V时的Cu K边XANES的原位光谱。 通过电化学原位重构Cu2P2O7,去除P和O物种 (图2a)。与CuO-800相比,Cu2P2O7具有更小的晶粒尺寸...
该工作以“Enhancing Compatibility of Two-Step Tandem Catalytic Nitrate Reduction to Ammonia Over P-Cu/Co(OH)2”为题发表在Advanced Materials上。 图文导读 图1:展示了P-Cu/Co(OH)2的合成过程示意图。P-Cu/Co(OH)2催化剂...
XRD, UV-Vis, N2 adsorption, XPS, PL, EIS and EPR are used to characterize the as-prepared catalysts. As a light absorber from UV to NIR, Cu2(OH)2CO3 can form more photogenerated electrons to recombine the holes in g-C3N4 through the "Z-scheme" mechanism. The as-prepared Cu2(OH)...
XPS and XAS spectra of chitosan-Cu. Source Data Fig. 3 X-ray diffraction of chitosan-Cu membrane and aligned chitosan-Cu. Source Data Fig. 4 EIS, conductivity evolution with relative humidity, stability of conductivity and simulated bond distance evolution. Source Data Fig. 5 Methanol permeabilit...
然而由于技术条件的限制,人们对Cu/CeO2催化剂活性位点的结构仍然缺乏全面的认知,其催化CO加氢生成甲醇的反应机理仍然存在争议。原位表征技术的发展为探索非均相催化剂在反应条件下的动态结构演化提供了有效途径。我们通过结合本征反应动力学、化学滴定/脱附以及一系列原位表征技术(in-situ NAP-XPS, in-situ XRD, ...
(O)OH), correspondingly35,53. Moreover, XPS analysis reveals two more peaks at approximately 531.2 eV (C=O) and 533.7 eV (C–OH/C–O) in the O 1 s binding energies (Fig.4B)35,53,63. The N 1 s spectrum (Fig.4C) exhibits three main peaks at 398.2 eV (pyridinic-N), 399.9 ...
值得注意的是,O 1s的两种XPS峰分别对应于样品中的晶格氧(O2-)和氧空位区域中金属阳离子结合的羟基(OH–)。表明了在制备CuCoOx过程中,为平衡铜和钴的低价态而产生了大量的氧空位。 ▲Fig. 1 Top-view SEM image of bare FO NAs (a) and FO/AO/CCOxNAs (b), the inset is the corresponding side-...
TEM, XRD, FT-IR, and XPS analysis of N-CQDs and Cu2+/N-CQDs As shown in Fig. 1(a-1), the characteristics determined by TEM demonstrated that the N-CQDs were obtained successfully. The N-CQDs comprised uniformly dispersed spherical dots with an average diameter of 1.4 nm. The high...
After CO oxidation, the Cu+ species on the surface of c-Cu2O were completely oxidized to Cu2+, as confirmed by the shift of the Cu 2p3/2 XPS peak from 932.0 eV to 933.4 eV, the appearance of the corresponding satellite peak in the 940−945 eV region characteristic of Cu2...