%&LaTeX
\documentclass{article}

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}

\begin{document}

\begin{thebibliography}{1}

\bibitem{Li_etal2021} {\textquotedblleft}\textit{Methane to Methanol through Heterogeneous Catalysis and Plasma Catalysis}{\textquotedblright}. Li S, Ahmed R, Yi Y, Bogaerts A, Catalysts \textbf{11}, 590 (2021).   http://doi.org/10.3390/catal11050590

\end{thebibliography}

\end{document}

