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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 52, Number 2
JKCSEZ 52(2)
April 20, 2008

Title	Synthesis of CaWO₄ by a Microemulsion Method 마이크로 에멀젼 방법을 이용한 CaWO₄의 합성
Author	Eun-Kyoung Ryu, Young-Duk Huh* 유은경, 허영덕*
Keywords	CaWO₄, 마이크로 에멀젼 , CaWO₄, Microemulsion
Abstract	마이크로 에멀젼 방법으로 CaWO₄ 결정을 합성하였다. CTAB에 대한 H₂O의 몰랄 농도비(w)를 변 화시켜서 다양한 크기와 형태의 CaWO₄를 얻었다. w=5와 w=10일 때 각각 100 nm와 500 nm 길이의 타원형 CaWO₄ 결정을 얻었다. w=20일 때는 1 μm의 막대형 CaWO₄ 결정을 얻었다. w=30에서는 길이가 약 2~3 μm인 구형의 CaWO₄ 결정을 얻었다. CTAB에 대한 H₂O의 몰랄 농도비가 증가 할수록 응집에 의해서 CaWO₄ 결정 의 모양은 타원형에서 막대형태를 거쳐서 구형으로 변했다. CaWO₄ crystals were synthesized by a microemulsion method. Various sizes and shapes of CaWO₄ were obtained by changing the molar ratio (w) of H₂O to CTAB. At w=5 and 10, oval CaWO₄ crystals with length of 100 nm and 500 nm were obtained, respectively. At w=20, rod-like CaWO₄ crystal with length of 1 μm was obtained. The sphere CaWO₄ crystal with length of about 2~3 μm was obtained at w=30. The CaWO₄ crystal morphology changes from oval to sphere via a rod by aggregation with increasing the molar ratio of H₂O to CTAB.
Page	164 - 168
Full Text	PDF

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