\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage[english]{babel}
\usepackage{helvet}
\renewcommand{\familydefault}{\sfdefault}
\usepackage[backend=biber,style=chem-acs]{biblatex}
\addbibresource{Literature.bib}
%%%%% Add your .bib file above
%\usepackage{fancyhdr}
%\pagestyle{fancy}
\usepackage[a4paper, total={5.9in, 9in}]{geometry}
\usepackage{graphicx}
\begin{document}
\thispagestyle{empty}
\begin{center}
\large
%%%%%%%%%% Insert your title
\textbf{Title of the abstract in bold}
%%%%%%%%%% Insert Author name
\vspace{0.4cm}
\normalsize
\textbf{Main Author}, rest of authors not bold
%%%%%%%%%% Insert Department
\vspace{0.4cm}
\textit{Department address written in italic}
%%%%%%%%%% Insert your Email
\vspace{0.4cm}
\textit{Email in italic}
\vspace{0.4cm}
\end{center}
\noindent
Main text of the abstract should be written with font 12, Arial. No indent of the paragraph. The references should be noted as the following example.\cite{Author} The figures in the abstract are allowed if they fit into one page limit and should be referred in the text accordingly (figure 1 \cite{Elgrishi2018}). One space before and after the figure is required. Abstracts are accepted in .pdf and .doc/docx formats.
\begin{figure}[h]
\centering
\includegraphics[width=0.65\textwidth]{DuckPicture.pdf}
\caption{Figure captions should be below the figure.}
\label{fig:my_label}
\end{figure}
\printbibliography[heading=none]
\end{document}
