Effect of fusion mixture treatment on the surface of low grade natural ruby

Chemical Composition and Spectroscopic Characteristics of Heat-Treated Rubies from Madagascar, Mozambique and Tanzania

“…Absorption peaks at 3738 cm −1 and 3500-3750 cm −1 were observed in the MD-N samples (Madagascar) which were not detected in the MD-1600 samples. It is speculated that the high temperature of 1600 • C leads to a decrease or even disappearance of free water molecules, resulting in the absence of the absorption peak at 3738 cm −1 [10]. The characteristic bimodal strength of 2332 cm −1 , 2361 cm −1 , 2847 cm −1 and 2921 cm −1 decreased in MD-1600, while the characteristic bimodal strength of 2328 cm −1 and 2361 cm −1 decreased in MS-1400, which may be due to the melting of inclusions at high temperatures (Figure 6).…”

“…The absorption peak near 550 nm is related to the iron content. Experimental results demonstrate that the ratio of Fe and Al on the surface of rubies changes after mixing and melting, leading to the alteration of the absorption peak at 550 nm [10].…”

Sustainable Synthesis of CuInS2@MIL-101(Cr) Composite: Nanoarchitectonics for Improved Photocatalytic Performance

“…Several studies have concentrated on the integration of CIS with MIL-101(Cr) to enhance its photocatalytic efficacy. For example, Zhang et al documented the successful fabrication of ZnS-CIS nanocrystals on MIL-101(Cr) with increased Rhodamine B (RB) photodegradation activity [19] . The researchers ascribed the increased performance to the collaborative impact of the composite structure of ZnS-CIS/MIL-101(Cr), which created a larger surface area for the adsorption of RB molecules and facilitated electron transfer between CIS and ZnS.…”

A green synthesis of CuInS2/MIL-101(Cr) nanocomposite with efficient visible light induced photocatalytic activity

“…Several studies have concentrated on the integration of CIS with MIL-101(Cr) to enhance its photocatalytic efficacy. For example, Zhang et al [19] documented the successful fabrication of ZnS-CIS nanocrystals on MIL-101(Cr) with increased Rhodamine B (RB) photodegradation activity. The researchers ascribed the increased performance to the collaborative impact of the composite structure of ZnS-CIS/MIL-101(Cr), which created a larger surface area for the adsorption of RB molecules and facilitated electron transfer between CIS and ZnS.…”