TY - JOUR
T1 - Self-Assembly of TiO2 Nanofiber-Based Microcapsules by Spontaneously Evolved Multiple Emulsions
AU - Lei, Leyan
AU - Kong, Tiantian
AU - Zhu, Pingan
AU - Kang, Zhanxiao
AU - Tian, Xiaowei
AU - Wang, Liqiu
N1 - Funding Information:
The authors acknowledge the financial support from the Research Grants Council of Hong Kong (GRF 17204718, GRF17211115, GRF 17207914, and GRF HKU717613E), the University of Hong Kong (URC 201511159108, 201411159074, and 201311159187), Young Scholar’s Program (NSFC 11504238) from the National Natural Science Foundation of China, and the Fundamental Research Program of Shenzhen (JCYJ20160229164007864). This study was also supported in part by the Zhejiang Provincial, Hangzhou Municipal, and Lin’an County governments.
Funding Information:
The authors acknowledge the financial support from the Research Grants Council of Hong Kong (GRF 17204718, GRF17211115, GRF 17207914 and GRF HKU717613E), the University of Hong Kong (URC 201511159108 201411159074, and 201311159187), Young Scholar's Program (NSFC 11504238) from the National Natural Science Foundation of China, and the Fundamental Research Program of Shenzhen (JCYJ20160229164007864). This study was also supported in part by the Zhejiang Provincial Hangzhou Municipal, and Lin'an County governments.
Publisher Copyright:
© 2018 American Chemical Society.
PY - 2018/7/31
Y1 - 2018/7/31
N2 - We demonstrate hierarchical nest/crust-like colloidosomes composed of interlocked titanium dioxide (TiO2) nanofibers using spontaneously evolved n-butanol/water/n-butanol (B/W/B) emulsions. We find two mechanisms to produce colloidosomes from B/W/B droplets due to their mutual solubility and dewetting discrepancy. Porous TiO2 colloidal capsules with loosely intertwined nanofibers were obtained after the dewetting of nanofiber-coated B/W/B droplets, while crustlike TiO2 colloidosomes with a thin shell and large hollow interior are developed from amphiphilic polymer-stabilized B/W/B droplets. We further investigate the effect of experimental parameters, including the initial droplet size, the nanofiber concentration, and the water/butanol ratios in butanol phases, on the droplet-to-colloidosome evolution and resultant morphology of colloidosomes. Our simple and versatile approach for fabricating TiO2 colloidosomes can be extended to a range of irregular colloidal particles, and the products have great potential to act as host systems in electrochemical catalysis, photothermal therapy, or filtration materials.
AB - We demonstrate hierarchical nest/crust-like colloidosomes composed of interlocked titanium dioxide (TiO2) nanofibers using spontaneously evolved n-butanol/water/n-butanol (B/W/B) emulsions. We find two mechanisms to produce colloidosomes from B/W/B droplets due to their mutual solubility and dewetting discrepancy. Porous TiO2 colloidal capsules with loosely intertwined nanofibers were obtained after the dewetting of nanofiber-coated B/W/B droplets, while crustlike TiO2 colloidosomes with a thin shell and large hollow interior are developed from amphiphilic polymer-stabilized B/W/B droplets. We further investigate the effect of experimental parameters, including the initial droplet size, the nanofiber concentration, and the water/butanol ratios in butanol phases, on the droplet-to-colloidosome evolution and resultant morphology of colloidosomes. Our simple and versatile approach for fabricating TiO2 colloidosomes can be extended to a range of irregular colloidal particles, and the products have great potential to act as host systems in electrochemical catalysis, photothermal therapy, or filtration materials.
UR - http://www.scopus.com/inward/record.url?scp=85049862063&partnerID=8YFLogxK
U2 - 10.1021/acs.langmuir.8b01472
DO - 10.1021/acs.langmuir.8b01472
M3 - Journal article
C2 - 29983067
AN - SCOPUS:85049862063
SN - 0743-7463
VL - 34
SP - 8785
EP - 8791
JO - Langmuir
JF - Langmuir
IS - 30
ER -