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1. Introduction Palygorskite (PAL) is a sort of natural nano-scale layer-ribbon hydrated magnesium aluminum silicate mineral. PAL exhibits particular rod-like crystal microstructure with the length of 1–5 μm and diameter of 20–100 nm. The special rod-like geometry generates numerous nanopores parallel to the crystal rods, which endows PAL with moderate cation exchange capacity, pore structure, large specific surface area and adsorption properties. Thus, PAL has been widely used in various fields including heavy metal ions and dyes adsorbent, catalyst support, drug carrier, inorganic crosslinker as well as reinforcement filler of polymer materials [1–8]. However, the rod-like crystals of raw PAL prefer to aggregate as crystal bundles or aggregates [9], which do not exhibit the nanometer characteristics. Thus far, chemical modification and physical approaches have been employed to dissociate and disperse crystal bundles of PAL for improving its physical–chemical properties and extending its application fields such as adsorbents and functional materials, etc. [10–12]. Among these methods, physical approaches such as highshear mixing, extrusion, grinding and ultrasonication [13–15] were1. Introduction Palygorskite (PAL) is a sort of natural nano-scale layer-ribbon hydrated magnesium aluminum silicate mineral. PAL exhibits particular rod-like crystal microstructure with the length of 1–5 μm and diameter of 20–100 nm. The special rod-like geometry generates numerous nanopores parallel to the crystal rods, which endows PAL with moderate cation exchange capacity, pore structure, large specific surface area and adsorption properties. Thus, PAL has been widely used in various fields including heavy metal ions and dyes adsorbent, catalyst support, drug carrier, inorganic crosslinker as well as reinforcement filler of polymer materials [1–8]. However, the rod-like crystals of raw PAL prefer to aggregate as crystal bundles or aggregates [9], which do not exhibit the nanometer characteristics. Thus far, chemical modification and physical approaches have been employed to dissociate and disperse crystal bundles of PAL for improving its physical–chemical properties and extending its application fields such as adsorbents and functional materials, etc. [10–12]. Among these methods, physical approaches such as highshear mixing, extrusion, grinding and ultrasonication [13–15] were1. Introduction Palygorskite (PAL) is a sort of natural nano-scale layer-ribbon hydrated magnesium aluminum silicate mineral. PAL exhibits particular rod-like crystal microstructure with the length of 1–5 μm and diameter of 20–100 nm. The special rod-like geometry generates numerous nanopores parallel to the crystal rods, which endows PAL with moderate cation exchange capacity, pore structure, large specific surface area and adsorption properties. Thus, PAL has been widely used in various fields including heavy metal ions and dyes adsorbent, catalyst support, drug carrier, inorganic crosslinker as well as reinforcement filler of polymer materials [1–8]. However, the rod-like crystals of raw PAL prefer to aggregate as crystal bundles or aggregates [9], which do not exhibit the nanometer characteristics. Thus far, chemical modification and physical approaches have been employed to dissociate and disperse crystal bundles of PAL for improving its physical–chemical properties and extending its application fields such as adsorbents and functional materials, etc. [10–12]. |
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禁虫 (正式写手)
- 翻译EPI: 19
- 应助: 9 (幼儿园)
- 金币: 8372.2
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【答案】应助回帖
★ ★ ★ ★ ★ ★
爱与雨下: 金币+1 2012-10-20 17:06:07
许安: 金币+5, 翻译EPI+1, ★有帮助 2012-10-21 19:50:55
爱与雨下: 金币+1 2012-10-20 17:06:07
许安: 金币+5, 翻译EPI+1, ★有帮助 2012-10-21 19:50:55
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1. Introduction Palygorskite (PAL) is a sort of natural nano-scale layer-ribbon hydrated magnesium aluminum silicate mineral. PAL exhibits particular rod-like crystal microstructure with the length of 1–5 μm and diameter of 20–100 nm. The special rod-like geometry generates numerous nanopores parallel to the crystal rods, which endows PAL with moderate cation exchange capacity, pore structure, large specific surface area and adsorption properties. Thus, PAL has been widely used in various fields including heavy metal ions and dyes adsorbent, catalyst support, drug carrier, inorganic crosslinker as well as reinforcement filler of polymer materials [1–8]. PAL是一种层带状的天然纳米水合硅酸镁铝矿物质。它具有特殊的棒状结晶微结构，长1–5 μm，直径 20–100 nm。棒状几何结构能够产生大量平行于晶体棒的纳米孔，这使得PAL具有适中的阳离子交换容量、孔结构、较大的比表面积、吸附性能。因此，PAL和聚合物增强型填料一样，被广泛用于重金属离子吸附剂、染料吸附剂、催化剂载体、药物载体、无机交联剂。 [1–8]. |
2楼2012-10-20 13:51:15
★ ★ ★ ★ ★ ★
爱与雨下: 金币+1, 感谢应助 2012-10-20 17:06:29
许安: 金币+5, ★有帮助 2012-10-21 19:51:04
爱与雨下: 金币+1, 感谢应助 2012-10-20 17:06:29
许安: 金币+5, ★有帮助 2012-10-21 19:51:04
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3楼2012-10-20 13:58:56
