Visible-Light-Driven BiOI-Based Janus Micromotor in Pure Water

Abstract

Experiment: Synthesis of BiOI microspheres:0.728 g Bi(NO 3 ) 3 •5H 2 O in 20 mL absolute ethanol in 100 mL flask and 0.249 g KI in 40 mL distilled water were prepared first. After completion of dissolution, KI solution was added drop-wise into the Bi(NO 3 ) 3 •5H 2 O solution with stir. Adjust the pH of the mixture to 7 by adding 1.5 M NH3•H2O, then, put the mixture in oil bath maintained at 80 for 3 h. The precipitates were collected by centrifugation, washed several times with distilled water and ethanol and finally dried in an oven overnight at 60 C. Finally, BiOI microspheres (diameter: 2~4 µm) were obtained. Characterization of BiOI microspheres:The scanning electron microscopy (SEM) images ( Figure S1A to Bi-O bond while the peak at 532.1 eV can be attributed to the hydroxyl groups on the surface of sample. The XPS spectrum of I 3d is shown in Figure 2C(d).The peaks with binding energy

Tailoring Metal/TiO2 Interface to Influence Motion of Light‐Activated Janus Micromotors

“…According to earlier research by Jang et al, Au/B/TiO 2 Janus micromotors showed multiwavelength responses from UV to visible light . Similar observation of micromotors propulsion by visible light was made when utilizing BiOI and Cu 2 O materials . Ren and co‐workers successfully demonstrated that motion of Au/TiO 2 Janus micromotors is strongly dependent on light intensity.…”

Self‐Propelled Micro/Nanomotors for Sensing and Environmental Remediation

“…Various types of micro/nanomotors such as swimmers, biohybrid nanomotors, nanowires, and Janus micromotors have been used in environmental remediation, biomedical applications, analytical sensing, and water remediation . The Janus nanoparticles (JNPs) composed of two domains with different chemical/physical composition were initially named after the double‐faced Roman god Janus ( Figure ).…”

Noncontinuous Super‐Diffusive Dynamics of a Light‐Activated Nanobottle Motor

“…[11,12] Near-infrared (NIR) light is an attractive stimulus with desirable light penetration and the ability to controllably irradiate the region of interest. [11,12] Near-infrared (NIR) light is an attractive stimulus with desirable light penetration and the ability to controllably irradiate the region of interest.…”