公开(公告)号：US20140377876A1

公开(公告)日：2014-12-25

申请号：US14087159

申请日：2013-11-22

Applicant: Korea Basic Science Institute

Inventor： Gae Hang LEE ,  Doo Ri BAE ,  Yeon Suk CHOI

IPC: G01N21/80 ,  B22F1/00 ,  B22F9/24

CPC classification number: B22F9/24 ,  B22F1/0018 ,  Y10T428/2982 ,  Y10T436/15 ,  Y10T436/156666

Abstract: A method for preparing hydrophobic gold nanoparticles includes adding 1,2-dichlorobenzene as a solvent to gold precursor and using oleylamine and oleic acid with volume ratio of 7.5:2.5 to 5:5 as surfactants. The size of the prepared gold nanoparticles can be controlled over a broad range and may be utilized in various fields such as bio-imaging, photonic crystallization, sensors, organic catalysts, surface enhanced raman spectrum, electronic devices, etc. Further, a method for colorimetric detection of a strong acid uses hydrophilic nanoparticles that are phase transited from the prepared hydrophobic gold nanoparticles. Up to 5 ppm of low content hydrochloric acid can be detected utilizing phase transited hydrophilic nanoparticles in the colorimetric detection method, and the gold nanoparticles that were used in the detection of strong acid can be reused without loss of activity through neutralization with bases.

Abstract translation: 制备疏水性金纳米颗粒的方法包括将1,2-二氯苯作为溶剂加入到金前体中，并使用体积比为7.5:2.5至5:5的油胺和油酸作为表面活性剂。 所制备的金纳米颗粒的尺寸可以在宽范围内进行控制，并可用于各种领域，例如生物成像，光子晶体结构，传感器，有机催化剂，表面增强拉曼光谱，电子器件等。另外， 强酸的比色检测使用从制备的疏水性金纳米粒子相转移的亲水性纳米颗粒。 在比色检测方法中可以使用相转移的亲水性纳米颗粒检测高达5ppm的低含量盐酸，并且用于检测强酸的金纳米颗粒可以通过用碱中和而不损失活性而重复使用。