| Synthesis and Characterization of Hydrothermal
Synthesized Ultra-Red CdS1–xSex Pigment |
Kun Li*, Qingwei Luo, Ruxue Bai, Yanmin Li, Chun Tang, Yiyue Wang and Xiao Wei
Pages : 259-264
DOI : 10.1080/0371750X.2023.2236658 |
| Abstract |
| Ultra-red pigment is in urgent need to enrich the colour range as well as to improve
the quality of ceramic product. In this study, ultra-red CdS1–xSex pigments (CP) were
synthesized through hydrothermal technique. The effects of S/Se ratio on the structural
and optical properties of CPs were investigated. CPs were characterized by XRD, ICP,
SEM and UV-vis techniques. The colorimetric parameters of CPs were measured as
also their band-gaps were estimated based on Tauc plot method. Furthermore, detailed
formation mechanism of CdS1–xSex has been elucidated. The results demonstrate
that different compositions of CdS1–xSex can be facilely obtained by adjusting the R
value (starting S/Se molar ratio); when R is equal to 0.67 and 0.83, the prepared samples
are CdS0.75Se0.25, when R is equal to 1.00, 1.17 and 1.33, the prepared samples are
CdS0.571Se0.429. It is found that excessive S2– plays critical role in CdS1–xSex formation.
CP prepared with R=1.00 owns L*=44.69, a*=49.93, b*=22.66, implying an excellent
red colour, which indicates potential use as an ultra-red ceramic pigment.
[Keywords: CdS1–xSex, Ultra-red pigment, Excessive S2–, Colour performance] |
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