Bui, Hoang Khang Kim, Ki Yoon Kim, Hyeonjin Ahn, Jae-Pyoung Yu, Taekyung Seo, Tae Seok 2024-01-19T15:33:42Z 2024-01-19T15:33:42Z 2022-01-25 2021-01 0934-0866 https://pubs.kist.re.kr/handle/201004/117561 Microfluidic droplet generators have garnered great attention due to the uniformity, high-throughput capability, and facile experimental setup. To maximize the potentials of droplet technology as a chemical/biological nanoliter-scale reactor, the downstream processes such as separation of the aqueous and oil phase, real-time monitoring of the products formed in droplets, and the final product recovery from the droplets is necessary. In this study, the droplet is utilized as a chemical reactor to synthesize a variety of Ag and Au bimetallic nanoalloys in a fully integrated microsystem including sample injection, a T-junction droplet generator, droplet reaction, water-oil phase separation, real-time UV-vis absorbance detection, and product recovery. The flow rate of the Ag nanoparticle (NP) solution and the HAuCl4 solution was tuned to generate different molar ratios of Ag and Au components. The in-line UV-vis absorbance spectrometer displays a peak shift of the Ag/Au bimetallic alloys depending on the molar ratio of Ag/Au in the continuous process, enabling to judge the kind of the Ag/Au alloys in situ and collect a variety of Ag/Au nanoalloys. Thus, the desired nanomaterials can be obtained with minimal trial and error, saving time and cost. English WILEY-V C H VERLAG GMBH Total Integration of the Sample Injection, Microdroplet Reaction, Phase Separation, Real-Time Optical Detection, and Recovery of Diverse Silver-Gold Bimetallic Nanoalloys in a Continuous Process Article 10.1002/ppsc.202000244 1 PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION, v.38, no.1 PARTICLE & PARTICLE SYSTEMS CHARACTERIZATION 38 1 N scie scopus 000597231500001 2-s2.0-85097377587 Chemistry, Physical Nanoscience & Nanotechnology Materials Science, Multidisciplinary Chemistry Science & Technology - Other Topics Materials Science Article REDUCTION NABH4 NANOCRYSTALS PURIFICATION TEMPERATURE EXTRACTION PLATFORM ALLOY bimetallic nanoalloys droplets in&#8208 line UV&#8211 vis absorbance microfluidics nanoparticles phase separator