\documentclass[9pt]{standalone}

\usepackage{fontspec}

\setmainfont{NewCM10-Regular}
\setmonofont{NewCMMono10-Regular}

\newfontfamily\notoemoji{Noto Color Emoji}[Renderer=HarfBuzz]

\newcommand{\emo}[1]{{\notoemoji\scriptsize #1}}

\begin{document}
\emo{♂}
\end{document}
