2022年2月1日 · X-ray photoelectron spectroscopy (XPS) was used to determine the bonds and functional groups in the gCN samples. The XPS survey spectra are shown in Fig. S6, the major contributions corresponded to C 1s (∼285 eV) and N 1s (∼400 eV). In addition, all samples showed a small peak attributed to O 1s that appeared at approximately 530 eV.

... surface chemistry of bulk GCN and CA-modified GCN catalysts was assessed by XPS analysis (Fig. 4 and Table 1). The XPS survey (data not shown) confirmed that the catalysts are mostly...

One of the most popular photocatalysts is graphitic carbon nitride (gCN), which has emerged as a noteworthy candidate for hydrogen generation through water splitting....

2023年10月10日 · X-ray photoelectron spectroscopy (XPS) was used to further analyse the chemical composition and speciation of the as-obtained U-gCN, UM-gCN and M-gCN. The XPS spectra of the U-gCN, UM-gCN, and M-gCN samples each include three peaks that are attributed to the C 1s, N 1s, and O 1s signals, as shown in Fig. 8 (a).

2022年10月1日 · X-ray photoelectron spectroscopy (XPS) revealed that the VB of single layer mesoporous GCN nanomesh (2.43 eV) is 0.35 eV greater than the aggregate counterparts (2.06 eV). When a 0.15 eV rise in the VB is combined with a negative shift of 0.35 eV, the CB is upshifted by 0.50 eV while considering a 0.15 eV boost in the VB with a negative turn of ...

2023年3月13日 · Graphitic carbon nitride (gCN) is a promising n-type semiconductor widely investigated for photo-assisted water splitting, but less studied for the (photo)electrochemical degradation of aqueous organic pollutants.

Development of efficient visible light-driven photocatalysts is an important approach towards sustainability. Herein, reduced graphene oxide–graphitic carbon nitride (rGO–gCN) photocatalysts were...

2024年8月14日 · In the present contribution, a detailed XPS investigation of a representative gCN–NiO nanocomposite specimen is presented, providing a thorough insight into the chemical states of the various elements by the analysis of the main core level peaks (C …

2023年5月18日 · The high-resolution C1s, N1s and O1s spectra of gCN and p-gCN-NS were studied in detail by XPS peak-differentiation-imitating analysis. For C1s spectrum (Fig. 6 b), the peaks at 284.7, 286.6 and 288.1 eV were the results of the carbon atoms in C–C bond or impurity, in C–N bond of the aromatic ring and in N–C = N bond of the sp2-hybridized ...

2017年3月16日 · The XPS result gives direct evidence of boron-doped in g-C 3 N 4 as well as the degree of doping, i.e., the N and B contents of B 2-GCN sample are about 6.96 and 5.74 at%, respectively. The N1s spectrum in Fig. 4 (c) could be divided into three peaks, including pyridinic N at 398.6 eV, C N H groups at 399.5 eV and graphitic N at 400.7 eV.