Atomic Layer Deposition in Nanometer-Level Replication of Cellulosic Substances and Preparation of Photocatalytic TiO_2/Cellulose Composites

摘要

Conformal replication of the morphologies of natural fibrous materials at the nanometer scale offers a relatively simple,low-cost,and environmentally benign method for the formation of sophisticated nanostructures.As compared,for example,to the commonly used template synthesis using porous alumina templates,replication of natural fibers requires fewer process steps.Because of the natural starting structures,the nanostuctures formed by replication are not as regular as those prepared using the alumina templates or other man-made templates.This is not necessarily a drawback,however,because many catalytic and sensor applications,for example,require only a high surface area,and a perfectly ordered structure is not necessary.