摘要： The remediation of environmental problems is an actual concern in many kinds of approaches, including the quality of water and air, which are critical survival elements for us humans. To clean these important life necessities, suitable technologies are needed that could be applied very efficiently if there are standard procedures, limits, and approaches that we must apply. The definition of standardization is the following, according to Xie et al. [1]: “Standardization is the process of implementing and developing technical standards based on the consensus of different parties that include firms, users, interest groups, standards organizations, and governments.” The problem, in fact, lies in the existence of the term “interest groups,” which undermine the fast development of standardization procedures. Moreover, a research area such as photocatalysis is one of those that constantly changes, imposing significant pressure on standardization, including dynamic response. This is nearly impossible as photocatalysis is still showing increasing trends (Fig. 12.1).