“…Heavy metal ions [ 1 , 2 ] and organic pollutants [ 3 , 4 ] are common pollutants in water which pose a serious threat to human health and the ecological environment. The most commonly toxic heavy metal ions in water include Cr(VI) [ 5 , 6 , 7 ], As(III) [ 8 ], Cd(II) [ 9 ], Hg(II) [ 10 ], Pb(II) [ 11 ], Cu(II) [ 12 ], Zn(II) [ 13 ], etc. The main organic pollutants include phenolic compounds [ 14 , 15 ], benzene compounds [ 16 , 17 ], halohydrocarbons [ 18 , 19 ] and so on.…”