20837-86-9Relevant articles and documents
Metathetic synthesis of lead cyanamide as a p-type semiconductor
Corkett, Alex J.,Dronskowski, Richard,Ku?trowski, Piotr,Luo, Dongbao,Ma, Zili,Qiao, Xianji,Rokicinska, Anna,Slabon, Adam
, p. 14061 - 14067 (2020)
Lead cyanamide PbNCN was synthesized by solid-state metathesis between PbCl2 and Na2NCN in a 1?:?1 molar ratio, and its structure was confirmed from Rietveldrefinement of X-ray data. Electronic-structure calculations of HSE06 density-functional type revealPbNCN to be an indirect semiconductor with a band gap of 2.4 eV, in remarkable quantitative agreement with the measured value. Mott-Schottky experiments demonstrate PbNCN to be a p-type semiconductor with a flat-band potential of 2.3 eV vs. the reversible hydrogen electrode (RHE) which is commonly used to estimate the value of the valence band edge position. Moreover, thin films of powderous PbNCN were assembled into a photoelectrode for photoelectrochemical water splitting. On the example of p-type PbNCN, this study provides the first experimental evidence that MNCN compounds can be applied as photocathodes for reductive reactions in photoelectrochemical cells.
Nonaqueous synthesis of metal cyanamide semiconductor nanocrystals for photocatalytic water oxidation
Zhao, Wei,Pan, Jie,Huang, Fuqiang
supporting information, p. 1575 - 1578 (2018/02/14)
Herein, we report nonaqueous synthesis of metal cyanamide semiconductor nanocrystals, including Ag2NCN nanorods (NRs), ZnNCN NRs and PbNCN nanoparticles. The as-prepared Ag2NCN NRs with a band gap of 2.35 eV are applied as photocatalysts for water oxidation. Their oxygen evolution rate (280.7 μmol h-1 g-1) is much higher than that of Ag2NCN microcrystals (24.0 μmol h-1 g-1).