This book is dedicated to the synthesis and characterization of one-dimensional zinc oxide nanostructures (1DZnO) through precision-driven pressure-modulated metal-assisted vapor transport. Thus, presenting compelling results for the controlled growth of high-crystalline 1DZnO nanostructures, enabling the fine-tuning of their optoelectronic and morphological properties. Furthermore, we investigate pivotal applications for these tailored 1DZnO nanostructures: photocatalytic hydrogen production and carbon dioxide sensing, with a view to advancing the green transition agenda. Additionally, the...