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In this paper, two kinds of layered double hydroxides (LDHs), ZnAl LDH and Ce-doped ZnAl LDH, were introduced as precursors to prepare composite oxides for gas sensing studies. Compared with ZnO/Al 2 O 3 based from ZnAl LDH, the ZnO/Al 2 O 3 /CeO 2 composite oxide obtained from Ce-doped ZnAl LDH shows higher gas response to ethanol and shorter response/recovery...
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