% !TeX TXS-program:compile = txs:///pdflatex

\documentclass[margin=5mm]{standalone}
\usepackage[nonpgfplots]{tkz-grapheur}

\begin{document}

\begin{GraphiqueTikz}[x=2cm,y=2cm,Xmin=-0.4,Xmax=7.6,Xgrille=0.5,Xgrilles=0.1,Ymin=-0.6,Ymax=2.2,Ygrille=0.5,Ygrilles=0.1]
	\tikzset{pflgrillep/.style={thin,gray}}
	\TracerAxesGrilles[]{0,...,7}{0,1,2}
	\DefinirCourbe[Couleur=red,Nom=cf,Debut=0,Trace]{5*x*exp(-x)}
	\PlacerTexte[Police=\bfseries\footnotesize]{(7,-0.33)}{Temps en heures}
	\PlacerTexte[Police=\bfseries\footnotesize,Position=above]{(0,2.2)}{Concentration en g/L}
\end{GraphiqueTikz}

\end{document}