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·2130·                            精细化工   FINE CHEMICALS                                 第 39 卷

            主要以中性分子存在，此条件下 SA/GO/ZIF-8 复合                      料的固定化提供了技术支撑和科学依据，并且
            吸附剂对 TC 的吸附效果更优异；pH 的升高使得                          SA/GO/ZIF-8 复合吸附剂结构设计的多功能性使其
            SA/GO/ZIF-8 复合吸附剂表面带有更多负电荷，易                       可作为一种具有实用性的高效吸附剂应用于环境废
            与呈阴离子形态的 TC 产生静电斥力                 [40] ，SA/GO/    水中抗生素的去除。
            ZIF-8 复合吸附剂对 TC 的吸附量降低，但是降低的
                                                               参考文献：
            不明显。这是因为 TC 的分子结构中含芳香环，其
                                                               [1]   LIANG H (梁好), LIU C S (刘传胜), GU J J (谷静静), et al. Review
            芳香环上的 π 电子极易与 SA/GO/ZIF-8 复合吸附剂
                                                                   of studies on adsorption of antibiotics by carbonaceous materials in
            的 π 电子发生 π-π 相互作用，在一定程度上抵消了                            drinking water treatment[J]. Water Purification Technology (净水技
            静电斥力带来的副作用，从而使 SA/GO/ZIF-8 复合                          术), 2018, 187(1): 30-39.
                                                               [2]   ZHANG J H, LU M Y, WAN J, et al. Effects of pH, dissolved humic
            吸附剂的吸附量降低较小            [41] 。这也说明静电斥力作                 acid and Cu  on the adsorption of norfloxacin on montmorillonite-
                                                                          2+
            用对吸附量的影响较小，而 π-π 作用机制在吸附过程                             biochar composite derived from wheat straw[J]. Biochemical Engineering
            中发挥了主导作用。然后，TC 在 SA/GO/ZIF-8 复合吸                       Journal, 2018, 130: 104-112.
                                                               [3]   FRIEDMAN M. Antibiotic-resistant bacteria: Prevalence in food and
            附剂的内表面开始进行吸附反应，最终整个吸附过                                 inactivation  by food-compatible compounds and  plant extracts[J].
            程达到动态平衡。SA/GO/ZIF-8 复合吸附剂对 TC                          Journal of Agricultural and Food Chemistry, 2015, 63(15): 3805-3822.
                                                               [4]   ROSI-MARSHALL E J, KELLY J J. Antibiotic stewardship should
            的吸附主要为范德华力相互作用、静电相互作用和                                 consider environmental fate of antibiotics[J]. Environmental Science
            π-π 相互作用。因此，SA/GO/ZIF-8 复合吸附剂对                         & Technology, 2015, 49(9): 5257-5258.
            TC 体现出优异的吸附性能。                                     [5]   HE  Y  Y,  DONG  W B, LI X P,  et al. Modified MIL-100(Fe) for
                                                                   enhanced photocatalytic degradation of tetracycline under visible-
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                                                                   Preparation and  photocatalytic properties of Bi 2WO 6/UiO-66
                                                                   composites[J]. Journal of Inorganic  Chemistry (无机化学学报),
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                                                               [7]   CHAN S H S, WU T Y, JUAN J C, et al. Recent developments of
                                                                   metal oxide semiconductors as photocatalysts in advanced oxidation
                                                                   processes (AOPs) for treatment  of  dye  waste-water[J].  Journal of
                                                                   Chemical Technology and Biotechnology, 2011, 86: 1130-1158.
                                                               [8]   LIN Y F, CHANG C Y. Magnetic  mesoporous iron oxide/carbon
                                                                   aerogel photocatalysts with adsorption ability for organic dye removal[J].
                                                                   RSC Advances, 2014, 4(54): 28628-28631.
                                                               [9]   DUDGEON D, ARTHINGTON A H, GESSNER M O, et al. Freshwater
                                                                   biodiversity: Importance, threats, status and conservation challenges[J].
                                                                   Biological Reviews, 2006, 81(2): 163-182.

                                                               [10]  DU C Y, ZHANG Z, YU G L,  et al. A review of  metal organic
               图 14  SA/GO/ZIF-8 复合吸附剂吸附 TC 的机理图                   framework (MOFs)-based materials  for antibiotics removal  via
            Fig. 14    Schematic diagram  of adsorption  mechanism of   adsorption and photocatalysis[J]. Chemosphere, 2021, 272(12): 129501.
                    SA/GO/ZIF-8 composite adsorbent for TC     [11]  CHEN X, JIANG X, YIN C J, et al. Facile fabrication of hierarchical
                                                                   porous ZIF-8 for enhanced adsorption of antibiotics[J]. Journal of
                                                                   Hazardous Materials, 2019, 367: 194-204.
            3   结论                                             [12]  TANG Y W, DUBBELDAM D, GUO X M, et al. Efficient separation
                                                                   of ethanol-methanol and ethanol-water  mixtures  using ZIF-8
                                                                   supported on a hierarchical porous mixed-oxide substrate[J]. ACS
                 采用直接滴加的方法将 SA 和 GO 混合溶胶滴
                                                                   Applied Materials & Interfaces, 2019, 11(23): 21126-21136.
                  2+
            入 Ca 溶液中交联制成 SA/GO 凝胶基底，再将                         [13]  MUZAYANHA S  U, YUDHA C S,  NUR  A,  et al. A fast metals
                                2+
            SA/GO 依次浸渍在 Zn 甲醇和二甲基咪唑的甲醇溶                            recovery method for the synthesis of lithium nickel cobalt aluminum
                                                                   oxide material from cathode waste[J]. Metals, 2019, 9(5): 615.
            中，使 ZIF-8 原位生长在 SA/GO 凝胶基底上，成功                     [14]  HUANG Z, ZHAO M H, WANG S X, et al. Selective recovery of
            制得 SA/GO/ZIF-8 复合吸附剂。通过 XRD、SEM、                       gold ions in aqueous solutions by a novel trithiocyanuric-Zr based
            TEM 等表征证明 ZIF-8 在 SA/GO 凝胶基底上均匀生                       MOFs adsorbent[J]. Journal of Molecular Liquids, 2020, 298: 112090.
                                                               [15]  SONG L L, LI S Q, LI T. In situ reconstruction of ZIF-8 loaded on
            长。对 TC 的吸附实验结果表明：在温度为 25  ℃、pH                         fibrous supports[J]. CrystEngComm, 2021, 23(37): 6490-6494.
            为 7、初始质量浓度为 50 mg/L 的 100 mL TC 溶液中，               [16]  YANG J S, XIE Y J, HE W. Research progress  on chemical
                                                                   modification of alginate: A review[J]. Carbohydrate Polymers, 2011,
            30 mg SA/GO/ZIF-8 吸附剂对 TC 的平衡吸附量可达                     84(1): 33-39.
            125.37 mg/g。循环实验结果表明，将 SA/GO/ZIF-8                 [17]  HUANG D J, ZHANG Z, MA Z H,  et al. Effect of  natural
            复合吸附剂循环吸附 5 次后，对 TC 的去除率仍在                             nanostructured rods and platelets on mechanical and water resistance
                                                                   properties of alginate-based nanocomposites[J]. Frontiers in Chemistry,
            85%以上。因此，本研究为 ZIF-8 基微纳米粉体材                            2018, 6: 635.
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