“Memory Effect” of Mg-Al Hydrotalcites and Its Chromium(VI) Adsorption Property

doi:10.3724/SP.J.1077.2011.00874

Abstract

Abstract: Mg-Al hydrotalcite (MAH) with high crystallinity was prepared using urea method. The “memory effect” and the chromium(VI) adsorption property of Mg-Al Hydrotalcites were studied. The MAH, reconstructed MAH (RMAH), calcined MAH (MAO) and calcined RMAH (RMAO) were characterized by XRD, FT-IR, SEM and DSC as well as self-deconvolution analyses. The results showed that the MAH and RMAH possessed a layered structure of hydrotalcites with high crystallinity, and there was little difference in crystal structures and charge density of brucite-like sheets between MAH and RMAH. The brucite-like sheets were still held in MAO, and a little remained in RMAO with more MgAl₂O₄. The adsorbility of Mg-A1 LDOs(MAO and RMAO) to Cr(VI) anions was substantially higher than that of Mg-A1 LDHs(MAH and RMAH), mainly because of the structure “memory effect” of hydrotalcites. The adsorbility of the MAO was higher than that of the RMAO. The adsorbility decrease of the RMAO might be due to the increase of the content of spinel MgAl₂O₄ phase and the decline of brucite-like sheets in RMAO that resulted in the descent of the “memory effect” reconstruction property. This newly discovery for anionic clays is useful for the decontamination of waste waters. The Mg-Al hydrotalcite can be considered as a potential material for sorption of anions in wastewater treatment systems.

Key words: Mg-Al hydrotalcite, memory effect, Cr(VI), adsorption, descent

CLC Number:

TB321

ZHAO Ce, ZENG Hong-Yan, WANG Ya-Ju, LIU Ping-Le, LI Yu-Qin, YANG Yong-Jie. “Memory Effect” of Mg-Al Hydrotalcites and Its Chromium(VI) Adsorption Property[J]. Journal of Inorganic Materials, 2011, 26(8): 874-880.

References

[1] 陆军, 刘晓磊, 史文颖, 等. 水滑石类插层组装功能材料. 石油化工, 2008, 37(6): 539-547.

[2] 徐淑芬, 倪哲明, 夏盛杰, 等(XU Shu-Feng, et al). Mg/Al双金属氧化物吸附Cr(VI)的动力学和热力学机理. 硅酸盐学报(Journal of the Chinese Ceramic Society), 2009, 37(5): 773-777.

[3] 臧运波, 侯万国, 王文兴. (ZANG Yun-Bo, et al) Cr(VI)在Mg-Al型类水滑石上的吸附-脱附性研究I. 吸附性. 化学学报(Acta Chim Sinica), 2007, 65(9): 773-778.

[4] 叶瑛, 杨帅杰, 郑丽波, 等(YE Ying, et al). 几种层状化合物对六价铬吸附性能的对比与讨论. 无机材料学报(Journal of Inorganic Materials), 2004, 19(6): 1379-1385.

[5] 邓欣, 曾虹燕, 冯波. 固定化脂肪酶催化制备生物柴油条件优化. 天然产物研究与开发, 2008(1): 113-116.

[6] 邹长军, 张丽颖, 姚伟宁. 超强碱催化剂碱强度(H->37)的指示剂测定法. 分析试验室, 2005, 24(2): 73-75.

[7] Aramenda M A, Borau V, Jimenez C, et al. Comparative study of Mg/M(III)(M=Al, Ga, In) layered double hydroxides obtained by coprecipitation and the Sol-Gel method. Journal of Solid State Chemistry, 2002, 168(1): 156-161.

[8] 张波, 郑遗凡, 廖江芬, 等. Mg/Zn/Al类水滑石的热分解和水化性能研究. 化学通报, 2006, 70(5): 351-354.

[9] Pavel O D, Birjega R, Che M, et al. The activity of Mg/Al reconstructed hydrotalcites by”memory effect”in the cyanoethylation reaction. Catalysis Communications. 2008, 9(10): 1974-1978.

[10] Erickson K L, Bostrom T E, Frost R L. A study of structural memory effects in synthetic hydrotalcites using environmental SEM. Materials Letters, 2005, 59(2): 226-229.

[11] Dimotakis E D, Pinnavaia T J. New route to layered double hydroxides intercalated by organic anions: precursors to polyoxometalate- pillared derivatives. Inorganic Chemistry, 1990, 29(13): 2393-2394.

[12] 赵芸, 梁吉, 李峰, 等. 层状双金属氢氧化物的热分解及动力学研究. 清华大学学报(自然科学版), 2004, 44(2): 149-152.

[13] 李大塘, 郭军, 沈俭一, 等(LI Da-Tang, et al). 焙烧温度对Mg(Al)O复合物结构和表面酸碱性质影响的研究. 化学物理学报(Chinese J. Chem. Phys.), 2000, 13(2): 220-226.

[14] Shen J Y, Kobe J M, Chen Y. Synthesis and surface acid/base properties of magnesium aluminum mixed oxides obtained from hydrotalcites. Langmuir, 1994, 10(10): 3902-3908.

[1]	WU Guangyu, SHU Song, ZHANG Hongwei, LI Jianjun. Enhanced Styrene Adsorption by Grafted Lactone-based Activated Carbon [J]. Journal of Inorganic Materials, 2024, 39(4): 390-398.
[2]	XIE Tian, SONG Erhong. Effect of Elastic Strains on Adsorption Energies of C, H and O on Transition Metal Oxides [J]. Journal of Inorganic Materials, 2024, 39(11): 1292-1300.
[3]	CHAO Shaofei, XUE Yanhui, WU Qiong, WU Fufa, MUHAMMAD Sufyan Javed, ZHANG Wei. Efficient Potassium Storage through Ti-O-H-O Electron Fast Track of MXene Heterojunction [J]. Journal of Inorganic Materials, 2024, 39(11): 1212-1220.
[4]	MA Xiaosen, ZHANG Lichen, LIU Yanchao, WANG Quanhua, ZHENG Jiajun, LI Ruifeng. 13X@SiO₂: Synthesis and Toluene Adsorption [J]. Journal of Inorganic Materials, 2023, 38(5): 537-543.
[5]	GUO Chunxia, CHEN Weidong, YAN Shufang, ZHAO Xueping, YANG Ao, MA Wen. Adsorption of Arsenate in Water by Zirconia-halloysite Nanotube Material [J]. Journal of Inorganic Materials, 2023, 38(5): 529-536.
[6]	WANG Shiyi, FENG Aihu, LI Xiaoyan, YU Yun. Pb (II) Adsorption Process of Fe₃O₄ Supported Ti₃C₂T_x [J]. Journal of Inorganic Materials, 2023, 38(5): 521-528.
[7]	YU Yefan, XU Ling, NI Zhongbing, SHI Dongjian, CHEN Mingqing. Prussian Blue Modified Biochar: Preparation and Adsorption of Ammonia Nitrogen from Sewage [J]. Journal of Inorganic Materials, 2023, 38(2): 205-212.
[8]	LING Jie, ZHOU Anning, WANG Wenzhen, JIA Xinyu, MA Mengdan. Effect of Cu/Mg Ratio on CO₂ Adsorption Performance of Cu/Mg-MOF-74 [J]. Journal of Inorganic Materials, 2023, 38(12): 1379-1386.
[9]	TANG Ya, SUN Shengrui, FAN Jia, YANG Qingfeng, DONG Manjiang, KOU Jiahui, LIU Yangqiao. PEI Modified Hydrated Calcium Silicate Derived from Fly Ash and Its adsorption for Removal of Cu (II) and Catalytic Degradation of Organic Pollutants [J]. Journal of Inorganic Materials, 2023, 38(11): 1281-1291.
[10]	DAI Jieyan, FENG Aihu, MI Le, YU Yang, CUI Yuanyuan, YU Yun. Adsorption Mechanism of NaY Zeolite Molecular Adsorber Coating on Typical Space Contaminations [J]. Journal of Inorganic Materials, 2023, 38(10): 1237-1244.
[11]	WANG Hongning, HUANG Li, QING Jiang, MA Tengzhou, HUANG Weiqiu, CHEN Ruoyu. Mesoporous Organic-inorganic Hybrid Siliceous Hollow Spheres: Synthesis and VOCs Adsorption [J]. Journal of Inorganic Materials, 2022, 37(9): 991-1000.
[12]	LIU Cheng, ZHAO Qian, MOU Zhiwei, LEI Jiehong, DUAN Tao. Adsorption Properties of Novel Bismuth-based SiOCNF Composite Membrane for Radioactive Gaseous Iodine [J]. Journal of Inorganic Materials, 2022, 37(10): 1043-1050.
[13]	ZHOU Fan, BI Hui, HUANG Fuqiang. Ultra-large Specific Surface Area Activated Carbon Synthesized from Rice Husk with High Adsorption Capacity for Methylene Blue [J]. Journal of Inorganic Materials, 2021, 36(8): 893-903.
[14]	YU Xiangkun, LIU Kun, LI Zhipeng, ZHAO Yulu, SHEN Jinyou, MAO Ping, SUN Aiwu, JIANG Jinlong. Efficient Adsorption of Radioactive Iodide by Copper/Palygorskite Composite [J]. Journal of Inorganic Materials, 2021, 36(8): 856-864.
[15]	SU Li, YANG Jianping, LAN Yue, WANG Lianjun, JIANG Wan. Interface Design of Iron Nanoparticles for Environmental Remediation [J]. Journal of Inorganic Materials, 2021, 36(6): 561-569.