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首页> 外文期刊>RSC Advances >Synthesis and characterisation of Ba(Zn1?xCox)2Si2O7 (0 ≤ x ≤ 0.50) for blue-violet inorganic pigments
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Synthesis and characterisation of Ba(Zn1?xCox)2Si2O7 (0 ≤ x ≤ 0.50) for blue-violet inorganic pigments

机译：蓝紫色无机颜料Ba（Zn1？xCox）2Si2O7（0≤x≤0.50）的合成与表征

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摘要

Ba(Zn _(1? x ) Co _( x ) ) _(2) Si _(2) O _(7) (0 ≤ x ≤ 0.50) solid solutions were synthesized as novel blue-violet inorganic pigments by a conventional solid-state reaction method. The crystal structure, optical properties, and colour of the pigments were characterized. All the pigments were obtained in a single-phase form. The pigments strongly absorbed visible light at wavelengths from 550 to 650 nm, corresponding to the range of green to orange light. This optical absorption was caused by the d–d transition of the tetrahedrally coordinated Co ~(2+) ( ~(4) A _(2) (F) → ~(4) T _(1) (P)), which was the origin of the blue-violet colour of the pigments. The most intense colour was obtained for Ba(Zn _(0.85) Co _(0.15) ) _(2) Si _(2) O _(7) , where a * = +52.2 and b * = ?65.5 in the CIE (Commission Internationale de l'éclairage) L * a * b * system. These absolute values were significantly larger than those of commercial violet pigments such as Co _(3) (PO _(4) ) _(2) ( a * = +33 and b * = ?32) and NH _(4) MnP _(2) O _(7) ( a * = +39 and b * = ?21). Therefore, the Ba(Zn _(0.85) Co _(0.15) ) _(2) Si _(2) O _(7) pigment could be a novel blue-violet inorganic pigment.
机译：Ba（Zn _（1？x）Co _（x））_（2）Si _（2）O _（7）（0≤x≤0.50）固溶体是通过常规方法合成的新型蓝紫色无机颜料固态反应法。表征了颜料的晶体结构，光学性质和颜色。所有颜料均以单相形式获得。颜料强烈吸收550至650 nm波长的可见光，对应于绿色至橙色的范围。这种光吸收是由四面体配位的Co〜（2+）（〜（4）A _（2）（F）→〜（4）T _（1）（P）的d–d跃迁引起的。是颜料蓝紫色的起源。对于Ba（Zn _（0.85）Co _（0.15）_（2）Si _（2）O _（7）获得最强烈的颜色，其中CIE中a * = +52.2和b * =？65.5 （国际照明委员会）L * a * b *系统。这些绝对值明显大于市售紫色颜料，例如Co _（3）（PO _（4））_（2）（a * = +33和b * =？32）和NH _（4）MnP的绝对值。 _（2）O _（7）（a * = +39和b * =？21）。因此，Ba（Zn _（0.85）Co _（0.15）_（2）Si _（2）O _（7）颜料可能是一种新型的蓝紫色无机颜料。

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