Preparation And Control Method Of Acid-driven Hydrogen-bubble-propelled Nanomotor

In recent years, designing and powing new synthetic nanomotors represent amajor challenge and opportunity. Particular attention has been given to chemicallypowered catalytic nanomotors based on different compositions and structures, thatare capable of moving autonomously in the presence of hydrogen peroxide fuel.Among these catalytic motors, self-propelled tubular nanomotor are particularlyattractive for practical biomedical applications. The oxy-bubble propulsionmechanism of such tubular nanomotor leads to efficient propulsion in relevantbiological fluids and high-ionic-strength media as desired for diverse practicalapplications ranging from directed cargo transport in microchips to isolation oftarget biomaterials from body fluid. However, the requirement of highconcentration of the hydrogen peroxide fuel has greatly hindered practicalapplications of these and other catalytically propelled nanomotors as there is nothydrogen peroxide in body fluidSrongly acidic environments can be found everwhere in our life,from diverseindustrial processes to our human stomach. This thesis report on a new PANI/Znmicrorocket that propels autonomously and efficiently in extreme acidicenvironments without additional fuels. Such acid-driven microtubular rocket relieson a bubble propulsion mechanism associated with the continuous thrust ofhydrogen bubble propulsion mechanism associated with the continuous thrust ofhydrogen bubbles generated at the inner zinc layer, analogous to that of oxy-bubble-propelled catalytic microengines when the new PANI/Zn bilayermicrorockets are immersed in a strongly acidic medium, a spontaneous redoxreaction-involving the Zn oxidation along with generation of hydrogen bubble-occurs on their inner Zn surface..These acid-driven hydrogen-bubble-propelled nanomotors have beenelectronsynthesited using the conical polycarbonate template. The effectivepropulsion in acidic media reflects the spontaneous redox reaction occurring atinner Zn surface. The propulsion characteristics of PANI/Zn nanomotors indifferent acid and in human serurn are described. The observe speed-pHdependence holds promise for sensitive pH dependence holds promise for sensitivepH measurements in extreme acidic environments. The new nanomotors display anultrafast propulsion along with attractive capabilities including guided movementand directed cargo transport. Such acid-driven microtubular rockets offerconsiderable potential for diverse biomedical and industrial applications A magnetic layer has been electronsynthesited using the conical polycarbonate template on theinner PANI surface, to allow magnetic control of their directionality and cargopickup, as desired for practical application of nanomachine.Based on the study of the original research, to improve the speed of nanomotor,the model of the nonomotor is optimal designed by application the principles ofprimary batteries. A copper layer has been electronsynthesited to improve lonmovement speed when the redox reaction occurs.