Green synthesis of silver Nanoparticles using Glycerol or In-Site Synthesis of Silver Nanopartcles inside Silver Citrate Nanorods

Abstract

은 나노 입자는 다양한 분야에서 사용될 수있다. 항균, 광전자 공학 및 표면 강화 라만 산란 (SERS) 감지 등. 대부분의 문헌에 따르면은 나노 입자는 고온, 알칼리성 pH 조건 및 자외선 조사에 의해 합성됩니다. 그리고 우리는 green 경로를 통해은 나노 입자를 합성하는 방법을 소개한다. 이 방법은은 이온과 반응하여은 나노 입자를 합성하는 환원제 인 글리세롤을 사용했다. 이 방법의 장점은 완전히 green 조건에서 모든 반응이 가능하다는 것인다. 이는 실온, 중성 pH 조건 및 에너지 원이 없음을 의미한다. 그리고 나서 은이나 은 이온 소금 나노 입자의 응용에 초점을 맞춘다. 우리는 항균제로 만들기 위해 일종의 은 구연산 나노입자를 합성한다. 은색 나노입자가 들어 있는 은색 구연산 나노로드인다. 그 부피 때문에, 은구연산 나노로드들은 신체에 손상을 주지 않고 은 나노입자를 천천히 방출하는 피부 표면에서만 활동할 수은하 나노입자를 방출할 수 있었다.|Glycerol is a substance with good economy. Researchers have been looking forward how to make it valuable. A new scheme is to use glycerol as a “green solvent” to instead of petroleum-based organic solvents. Its nonhazardous to human body, and high boiling point allow to perform experiment at high temperatures under ambient atmospheric pressures. Its dielectric constant is between that of water and organic solvents, and it can dissolve a variety of substances between salts and organic molecules. A lot of report shows that metal nanoparticles could be synthesized in glycerol, but it often has high requirements on the conditions, such as high temperatures, alkaline pH conditions or irradiance of ultraviolet light. Herein, we prove that silver nanoparticles could be reduced in glycerol under a condition without external energy intervention. We found it was based on aldehydes and free radicals which were generated in glycerol. They would be acting as reducing agent in operation. And silver nanoparticles often be used as antimicrobial agents, but an important risk factors is that could be damage human body also, when it is used as a topical medicine. An idea to solve this problem is to embed the nanoparticles in matrices such as composites, polymers or hydrogels. However, most methods have limitations in terms of nanoparticles loading capacity or pre- or post-treatment require in the manufacturing process. Herein, we report that two in-situ synthetic of silver nanoparticles inside silver citrate nanorods that rea antimicrobial composed of silver and citrate ions. The advantage of silver nanoparticles embedded silver citrate nanorods are exhibit a synergistic, long-lasting, and sustainable antimicrobial effect. And it’s worth noting that the nanoparticles can be formed inside silver citrate nanorods rapidly via electron beam irradiation without high temperature or add other reagents. The funda-mental principles of the proposed efficient syntheses are discussed in terms of the catalytic effect of reactants condined in nanospaces.