TY - JOUR
T1 - Novel synthesis of layered double hydroxides (LDHs) from zinc hydroxide
AU - Meng, Zilin
AU - Zhang, Yihe
AU - Zhang, Qian
AU - Chen, Xue
AU - Liu, Leipeng
AU - Komarneni, Sridhar
AU - Lv, Fengzhu
N1 - Funding Information:
This work was supported by the National High Technology Research and Development Program (863 Program 2012AA06A109) of China and China Scholarship Council. One of us (SK) was supported by the College of Agricultural Sciences under Station Research Project No. PEN04566.
PY - 2017/2/28
Y1 - 2017/2/28
N2 - The most common synthesis methods for layered double hydroxides (LDHs) are co-precipitation and reconstruction, which can have some limitations for application. Here, we report a novel synthesis method for LDHs. We use zinc hydroxide as the precursor to synthesize LDHs phase through a simple transformation process of zinc hydroxide phase. For this transformation process, aluminum can enter into zinc hydroxide and replace zinc quickly to transform it into LDH by creating positive charges in the zinc hydroxide solid phase. The mechanism of LDH formation was through Al 3+ reaction first with zinc hydroxide followed by recrystallization of the original structure of zinc hydroxide. Thus, the new process of LDH formation involves a reaction of Al to substitute for Zn and recrystallization leading to LDH and the final pH influences the crystallization of LDHs by this process. In addition, Cr 3+ was employed as a trivalent cation for LDH formation to react with zinc hydroxide, which also led to LDH structure.
AB - The most common synthesis methods for layered double hydroxides (LDHs) are co-precipitation and reconstruction, which can have some limitations for application. Here, we report a novel synthesis method for LDHs. We use zinc hydroxide as the precursor to synthesize LDHs phase through a simple transformation process of zinc hydroxide phase. For this transformation process, aluminum can enter into zinc hydroxide and replace zinc quickly to transform it into LDH by creating positive charges in the zinc hydroxide solid phase. The mechanism of LDH formation was through Al 3+ reaction first with zinc hydroxide followed by recrystallization of the original structure of zinc hydroxide. Thus, the new process of LDH formation involves a reaction of Al to substitute for Zn and recrystallization leading to LDH and the final pH influences the crystallization of LDHs by this process. In addition, Cr 3+ was employed as a trivalent cation for LDH formation to react with zinc hydroxide, which also led to LDH structure.
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U2 - 10.1016/j.apsusc.2016.11.032
DO - 10.1016/j.apsusc.2016.11.032
M3 - Article
AN - SCOPUS:85006761060
SN - 0169-4332
VL - 396
SP - 799
EP - 803
JO - Applied Surface Science
JF - Applied Surface Science
ER -