Directed assembly of hierarchical CdS nanotube arrays from CdS nanoparticles:: Enhanced solid state electro-chemiluminescence in H2O2 solution

Hierarchical CdS nanotube arrays (see figure) are assembled in an anodic aluminum oxide template from US nanoparticles by using a controlled solution precipitation method. The hierarchical nanotube arrays, with high porosity and uniform alignment, display considerably varied photoluminescence and enhanced solid state electrochemiluminescence in H2O2 solution compared with those of random nanoparticle aggregates.