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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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luckiest
禁蟲(chóng) (正式寫(xiě)手)
- 翻譯EPI: 19
- 應(yīng)助: 9 (幼兒園)
- 金幣: 8372.2
- 散金: 197
- 紅花: 4
- 帖子: 759
- 在線(xiàn): 585.3小時(shí)
- 蟲(chóng)號(hào): 1082769
- 注冊(cè): 2010-08-26
- 專(zhuān)業(yè): 分離過(guò)程
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★
愛(ài)與雨下: 金幣+1 2012-10-20 17:06:07
許安: 金幣+5, 翻譯EPI+1, ★有幫助 2012-10-21 19:50:55
愛(ài)與雨下: 金幣+1 2012-10-20 17:06:07
許安: 金幣+5, 翻譯EPI+1, ★有幫助 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是一種層帶狀的天然納米水合硅酸鎂鋁礦物質(zhì)。它具有特殊的棒狀結(jié)晶微結(jié)構(gòu)，長(zhǎng)1–5 μm，直徑 20–100 nm。棒狀幾何結(jié)構(gòu)能夠產(chǎn)生大量平行于晶體棒的納米孔，這使得PAL具有適中的陽(yáng)離子交換容量、孔結(jié)構(gòu)、較大的比表面積、吸附性能。因此，PAL和聚合物增強(qiáng)型填料一樣，被廣泛用于重金屬離子吸附劑、染料吸附劑、催化劑載體、藥物載體、無(wú)機(jī)交聯(lián)劑。 [1–8]. |
2樓2012-10-20 13:51:15
★ ★ ★ ★ ★ ★
愛(ài)與雨下: 金幣+1, 感謝應(yīng)助 2012-10-20 17:06:29
許安: 金幣+5, ★有幫助 2012-10-21 19:51:04
愛(ài)與雨下: 金幣+1, 感謝應(yīng)助 2012-10-20 17:06:29
許安: 金幣+5, ★有幫助 2012-10-21 19:51:04
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