Abstract:
본 발명은 3차원 입방체 형태의 나노구조를 가지는 카본 나이트라이드 합성 및 이를 이용한 구리이온의 선택적 검출방법에 관한 것이다. 본 발명은 3차원 입방체 형태의 나노구조를 가지는 카본 나이트라이드는 3차원 입방체 형태의 메조포러스 실리카를 주형으로 사용하여 합성된다. 본 발명의 구리이온의 선택적 검출방법은 상기 나노구조를 가지는 카본 나이트라이드와 구리이온 수용액을 반응시켜 카본 나이트라이드 고유 발광성의 감소정도를 확인하는 것으로 구성된다. 본 발명에 의해, 수용액 상에서 복잡한 유기 수용체의 접합과정 없이 형광 측정만으로 구리 이온에 대한 선택적인 광학적 감지가 가능하며 수용액과 생리학적인 조건에서 손쉽게 감지할 수 있게 된다.
Abstract:
PURPOSE: The synthesis of carbon nitride in the form of a three-dimensional cubical shaped nano-structure and a method for selectively detecting copper ions using the same are provided to easily detect copper ions in an aqueous solution and under physiological conditions by implementing selective optical detection with respect to the copper ions based on fluorescent measurement. CONSTITUTION: Carbon nitride is synthesized by using three-dimensional cubical shaped mesoporous silica. The carbon nitride is obtained by the following: a cyanamide aqueous solution is introduced into a three dimensional cubical shaped mesoporous silica template; a centrifugal separation process and a drying process are implemented; the dried material is plasticized; the plasticized material is treated with ammonium hydrogen fluoride and is dried; and the silica template is eliminated.
Abstract:
A mesoporous silica SBA-15 grafted with amine and a method of purifying succinic acid more efficiently and economically by using the same are provided to adsorb selectively impure organic acids generated together with succinic acid by strains in the fermentation process. A mesoporous silica SBA-15 grafted with amine is used as an adsorbent of impure organic acids in the purification process of succinic acid. The amine is a primary amine, a secondary amine, or a tertiary amine. The primary amine is 3-aminopropyltriethoxysilane, the secondary amine is N-methylaminopropyltrimethoxysilane, and the tertiary amine is 3-(N,N-dimethylaminopropyl)trimethoxysilane. A purification method of succinic acid comprises adsorbing and removing impure organic acids using the mesoporous silica SBA-15 grafted with amine as an adsorbent for adsorbing impure organic acids. The purification method comprises performing the adsorption process in the pH range of 2.0 to 2.5.