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首页> 外文期刊>Crystal Research and Technology: Journal of Experimental and Industrial Crystallography >Controlled synthesis of barium chromate microcrystals
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Controlled synthesis of barium chromate microcrystals

机译：铬酸钡微晶的受控合成

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摘要

Barium chromate (BaCrO4) microcrystals with various morphologies such as shuttle-like, x-shaped, ellipsoid, leaf-like crystals were synthesized from aqueous solutions using poly (sodium 4-styrenesulfonate) (PSS) as template agent at room temperature. The characterization results show that pH values and concentrations of reactants and PSS are important parameters in the morphology and size evolution of BaCrO_4. The possible formation mechanism of BaCrO_4 crystals with different morphologies was proposed. PSS complexes Ba~(2+) first, then affects the nucleation and crystallization process by interacting with the plane face of crystal, which finally results in various morphologies and sizes of crystals. In addition, the possible mechanism of photoluminescence (PL) spectra was also proposed.
机译：在室温下，使用聚（4-苯乙烯磺酸钠）（PSS）作为模板剂，从水溶液中合成了具有各种形态的铬酸钡（BaCrO4）微晶，如穿梭状，x形，椭圆形，叶状晶体。表征结果表明，pH值，反应物和PSS的浓度是BaCrO_4的形貌和尺寸演变的重要参数。提出了不同形貌的BaCrO_4晶体的可能形成机理。 PSS首先与Ba〜（2+）络合，然后通过与晶体平面相互作用来影响成核和结晶过程，最终导致各种形态和尺寸的晶体。此外，还提出了光致发光（PL）光谱的可能机理。

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