Second, TiO2 nanoparticles are assembled onto negatively charged amorphous carbonaceous spheres in ultrapure water by adjusting the pH value of the TiO2 sol suspension to 4.0 using 0.1 M HCl solution under continuous stirring for 10 min
Second, TiO2 nanoparticles are assembled onto negativelycharged amorphous carbonaceous spheres in ultrapure water by adjusting the pH value of the TiO2 sol suspension to 4.0 using 0.1 M HCl solution under continuous stirring for 10 min