CN115554989A - 一种前修饰锆基mof吸附剂及其制备方法与应用 - Google Patents
一种前修饰锆基mof吸附剂及其制备方法与应用 Download PDFInfo
- Publication number
- CN115554989A CN115554989A CN202211391590.6A CN202211391590A CN115554989A CN 115554989 A CN115554989 A CN 115554989A CN 202211391590 A CN202211391590 A CN 202211391590A CN 115554989 A CN115554989 A CN 115554989A
- Authority
- CN
- China
- Prior art keywords
- zirconium
- based mof
- adsorbent
- mof adsorbent
- benzenedithiol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000003463 adsorbent Substances 0.000 title claims abstract description 64
- 239000013096 zirconium-based metal-organic framework Substances 0.000 title claims abstract description 44
- 150000003754 zirconium Chemical class 0.000 title claims abstract description 25
- 238000002360 preparation method Methods 0.000 title abstract description 5
- 150000002500 ions Chemical class 0.000 claims abstract description 36
- 239000005711 Benzoic acid Substances 0.000 claims abstract description 35
- -1 imino-1, 4-benzenedithiol Chemical compound 0.000 claims abstract description 35
- 238000001179 sorption measurement Methods 0.000 claims abstract description 34
- 239000012621 metal-organic framework Substances 0.000 claims abstract description 29
- HVXLKRWRWNFGBA-UHFFFAOYSA-N 2,5-diaminobenzene-1,4-dithiol;dihydrochloride Chemical compound Cl.Cl.NC1=CC(S)=C(N)C=C1S HVXLKRWRWNFGBA-UHFFFAOYSA-N 0.000 claims abstract description 21
- NXZBZWZORYEIJL-UHFFFAOYSA-N 3-formyl-4-hydroxybenzoic acid Chemical compound OC(=O)C1=CC=C(O)C(C=O)=C1 NXZBZWZORYEIJL-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910007926 ZrCl Inorganic materials 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 42
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 40
- 239000002243 precursor Substances 0.000 claims description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 19
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 18
- 239000002904 solvent Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 14
- 239000007787 solid Substances 0.000 claims description 13
- 238000010992 reflux Methods 0.000 claims description 12
- 238000002791 soaking Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 235000019441 ethanol Nutrition 0.000 claims description 6
- 238000001704 evaporation Methods 0.000 claims description 6
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 4
- 239000002131 composite material Substances 0.000 abstract description 2
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 description 12
- 239000006228 supernatant Substances 0.000 description 12
- 238000003795 desorption Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 5
- RVPVRDXYQKGNMQ-UHFFFAOYSA-N lead(2+) Chemical compound [Pb+2] RVPVRDXYQKGNMQ-UHFFFAOYSA-N 0.000 description 5
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- XLJKHNWPARRRJB-UHFFFAOYSA-N cobalt(2+) Chemical compound [Co+2] XLJKHNWPARRRJB-UHFFFAOYSA-N 0.000 description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 238000002354 inductively-coupled plasma atomic emission spectroscopy Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 230000009920 chelation Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 125000003396 thiol group Chemical group [H]S* 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005033 Fourier transform infrared spectroscopy Methods 0.000 description 2
- ATHHXGZTWNVVOU-UHFFFAOYSA-N N-methylformamide Chemical compound CNC=O ATHHXGZTWNVVOU-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000009881 electrostatic interaction Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 239000013335 mesoporous material Substances 0.000 description 2
- 239000013110 organic ligand Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 1
- 208000002381 Brain Hypoxia Diseases 0.000 description 1
- 206010048962 Brain oedema Diseases 0.000 description 1
- 229920001661 Chitosan Polymers 0.000 description 1
- 238000003775 Density Functional Theory Methods 0.000 description 1
- HEDRZPFGACZZDS-MICDWDOJSA-N Trichloro(2H)methane Chemical compound [2H]C(Cl)(Cl)Cl HEDRZPFGACZZDS-MICDWDOJSA-N 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910007746 Zr—O Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 208000007502 anemia Diseases 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000004958 brain cell Anatomy 0.000 description 1
- 208000006752 brain edema Diseases 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 210000000777 hematopoietic system Anatomy 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 210000003734 kidney Anatomy 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 210000005036 nerve Anatomy 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000013384 organic framework Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000035807 sensation Effects 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/223—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
- B01J20/226—Coordination polymers, e.g. metal-organic frameworks [MOF], zeolitic imidazolate frameworks [ZIF]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0211—Compounds of Ti, Zr, Hf
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2220/00—Aspects relating to sorbent materials
- B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
- B01J2220/46—Materials comprising a mixture of inorganic and organic materials
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
本发明涉及一种前修饰锆基MOF吸附剂及其制备方法与应用,属于复合材料技术领域。本发明以2'5‑双(5‑羟基‑3‑苯甲酸)亚氨基‑1,4‑苯二硫醇修饰锆基MOF吸附剂,即以2,5‑二氨基苯‑1,4‑二硫醇二盐酸盐和3‑甲酰基‑4‑羟基苯甲酸反应生成的有机连接剂FHD,有机连接剂FHD与ZrCl4反应得到前修饰锆基MOF吸附剂FHD‑MOF;前修饰锆基MOF吸附剂FHD‑MOF可用于高效选择性回收吸附溶液中的铅离子。
Description
技术领域
本发明涉及一种前修饰锆基MOF吸附剂及其制备方法与应用,属于复合材料技术领域。
背景技术
铅离子进入人体后很难清除,直接损害人体脑细胞,主要造成损害对神经、造血系统和肾脏,引起贫血、脑缺氧、脑水肿、运动和感觉异常。因此,必须从水环境中去除铅离子。
目前,去除废水中铅离子最常用的技术有沉淀法、电解法、溶剂萃取法、生物处理法和吸附法。由于其简单、灵活、无毒副产物、环境友好、通用性强、易再生等特点,吸附已成为许多重金属去除的重要技术。吸附剂的选择是吸附的基本组成部分。传统吸附剂有活性炭、纳米颗粒吸附剂、生物吸附剂和壳聚糖等,但其再生效率低,处理后的水质难以满足循环利用要求,价格高,选择性吸附能力差,限制了它们的应用。
近年来,金属-有机骨架(MOFs)作为吸附剂吸附重金属离子。MOFs具有以下特点:1)孔隙率和较大的比表面积有利于特定离子的选择性吸附。2)不饱和活性位点与金属离子之间的相互作用可以随机调节。3)可变的金属中心和有机配体导致其结构和功能的多样性。然而,大多数MOF的结构稳定性较差,并且对铅离子的吸附选择性较差。
发明内容
本发明针对现有MOFs吸附铅离子的吸附选择性较差和吸附剂结构稳定性差等问题,提出了一种前修饰锆基MOF吸附剂及其制备方法与应用,以2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇修饰锆基MOF吸附剂,即以2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸反应生成的有机连接剂FHD,有机连接剂FHD与ZrCl4反应得到前修饰锆基MOF吸附剂FHD-MOF;前修饰锆基MOF吸附剂FHD-MOF可用于高效选择性回收吸附溶液中的铅离子。
一种前修饰锆基MOF吸附剂,以2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇修饰锆基MOF吸附剂,其结构式为:
所述前修饰锆基MOF吸附剂的方法,具体步骤如下:
(1)维持氮气氛围下,将2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸加入到甲醇溶剂中,搅拌溶解得到溶液A,溶液A在温度60-65℃下回流反应5.0-6.0h,蒸发溶剂,采用乙醇和去离子水洗涤并分别浸泡20-24h,固液分离,固体干燥即得前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇,记为FHD;合成步骤如下:
(2)将前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇和ZrCl4溶解至N,N-二甲基甲酰胺中,加入浓盐酸,在温度120~125℃下回流反应70~72h,冷却至室温,固液分离,固体经N,N-二甲基甲酰胺和无水乙醇洗涤、浸泡,真空干燥即得前修饰锆基MOF吸附剂FHD-MOF;合成步骤如下:
所述步骤(1)2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸的摩尔比为1:2.0~2.2。
所述步骤(1)溶液A中2,5-二氨基苯-1,4-二硫醇二盐酸盐的质量浓度为1.6~1.8g/mL。
所述步骤(1)溶液A中3-甲酰基-4-羟基苯甲酸的质量浓度为3.20~3.96g/mL。
所述步骤(1)氮气的流速为0.5-1L/h。
所述步骤(2)前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与ZrCl4的质量比为1:1.0-1.1。
所述步骤(2)浓盐酸的浓度为36~38wt%,前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与浓盐酸的固液比g:mL为1.1:0.5-0.6,N,N-二甲基甲酰胺与浓盐酸的体积比为150:1.0-2.0。
修饰锆基MOF吸附剂的总体合成路线为
修饰锆基MOF吸附剂选择性高效选择性吸附铅离子的机理:前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇中的羟基,氨基和巯基在吸附过程中与铅离子发生静电作用和螯合反应;通过密度泛函理论计算得知2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇中的氧、氮和硫原子分别带电-0.539Ha、-0.310Ha和-0.136Ha,说明羟基与铅离子的静电作用最强烈;经XPS分析得知吸附铅离子后,S2p的结合能移动的最多,分别为0.63eV、-0.45eV、-0.66eV和-1.13Ev,说明S2p与铅离子的螯合作用最明显;通过前沿分子轨道理论计算得巯基官能团与铅离子结合的吸附能为-39.724Ha,偶极矩为5.483德拜,键长为2.644,均优于羟基、氨基与铅离子的结合模型,理论计算与实验结果一致,说明巯基与铅离子的螯合作用最明显,羟基与铅离子的静电作用最强烈。
本发明的有益效果是:
(1)将2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸生成有机接头(前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇),并将该接头接枝到ZrCl4上形成的修饰锆基MOF吸附剂,可从溶液中高效选择性吸附去除铅离子;
(2)由于有机框架材料具有大的比表面积,易于改性,易于解吸的特点,本发明前修饰锆基MOF吸附剂无毒无害,易分离回收,可选择性吸附去除铅离子;
(3)本发明前修饰锆基MOF吸附剂具有良好的选择性,拥有优异的再生性能,用完可回收,经5次吸附解吸实验后吸附率从98.2%仅仅降低到92.4%,其对铅离子的重复吸收率高。
附图说明
图1为实施例1前修饰锆基MOF吸附剂的1H NMR图;
图2为实施例1前修饰锆基MOF吸附剂的EDS图;
图3为实施例1前修饰锆基MOF吸附剂BET图谱;
图4为实施例1前修饰锆基MOF吸附剂的XRD图;
图5为实施例1前修饰锆基MOF吸附剂的FT-IR图;
图6为实施例1前修饰锆基MOF吸附剂吸附铅离子前后的XPS对比图谱。
具体实施方式
下面结合具体实施方式对本发明作进一步详细说明,但本发明的保护范围并不限于所述内容。
实施例1:前修饰锆基MOF吸附剂的方法,具体步骤如下:
(1)维持氮气氛围下,将2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸加入到甲醇溶剂中,搅拌溶解得到溶液A,溶液A在温度65℃下回流反应5.0h,蒸发溶剂至溶剂体积浓缩至10mL,采用乙醇和去离子水洗涤并分别浸泡22h,固液分离,固体干燥22h即得前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇,记为FHD;其中2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸的摩尔比为1:2.1,溶液A中2,5-二氨基苯-1,4-二硫醇二盐酸盐的质量浓度为1.7g/mL,3-甲酰基-4-羟基苯甲酸的质量浓度为3.57g/mL;反应方程式如下:
(2)将前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇和ZrCl4溶解至N,N-二甲基甲酰胺中,加入浓盐酸,在温度120℃下回流反应72h,冷却至室温,固液分离,固体经N,N-二甲基甲酰胺和无水乙醇洗涤、浸泡,真空干燥即得2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇锆基MOF吸附剂,记为FHD-MOF;其中前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与ZrCl4的质量比为1:1.0,浓盐酸的浓度为36wt%,前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与浓盐酸的固液比g:mL为1.1:0.5,N,N-二甲基甲酰胺与浓盐酸的150:1.0;反应方程式如下:
本实施例产品修饰锆基MOF吸附剂的1H NMR,EDS,BET,XRD,FT-IR和XPS图见图1-6,从图1可知,前驱体材料FHD的1H(NMR)谱中出现了五个多重峰:1H NMR(500MHz,Chloroform-d)δ8.67(s,1H),8.23(d,J=2.0Hz,1H),7.94(dd,J=8.9,2.1Hz,1H),6.88(dd,J=20.8,8.9Hz,1H),5.62(d,J=0.0Hz,1H)。δ8.67(s,1H)处的宽单重峰是由36号和37号氢质子引起的。δ8.23(d,J=2.0Hz,1H)处的多重态是由苯环上的46和40号氢质子引起的。δ7.94(dd,J=8.9,2.1Hz,1H)处的多重态是由苯环上的39和45号氢质子引起的。δ6.88(dd,J=20.8,8.9Hz,1H)处的多重态是由38和44号氢质子引起的。巯基上的35和43号氢质子在δ5.62(d,J=0.0Hz,1H)处产生多重态;
图2说明本实施例合成的锆基MOF吸附剂主要由元素C、N、O、S和Zr组成,C、N、O、S和Zr的重量百分比分别为63.7%、2.92%、28.01%、1.81%和3.56%;
通过BET(图3)分析了吸附剂FHD-MOF的内部结构,FHD-MFO的BET特性与介孔材料的H3型特性一致,表明FHD-MOF是一种介孔材料;FHD-MOF的比表面积、孔体积和孔径分别为676.697m2/g、0.379cm3/g和7.687nm;
XRD谱图(图4)中在2θ=6.4°附近有Zr4+的特征衍射峰,FT-IR图(图5)中,在616cm-1处有Zr-O的组合峰谱,表明有机配体FHD和ZrCl4结合成功;以上表征结果证实锆基MOF吸附剂成功合成;对吸附铅离子前后的吸附材料进行XPS分析,吸附后FHD-MOF的谱图中(图6)出现了Pb4f的特征峰,证实了Pb(Ⅱ)离子被FHD-MOF吸附;
吸附铅离子性能测定:
室温下将FHD-MOF(10mg)和含混合离子Zn(II),Cu(II),Mg(II),K(I),Co(II),Ni(II)和Pb(II)的溶液(pH 5,10mL,50mg/L)加入15mL离心管中,并在振荡机下以200rpm振荡速度振荡20h;离心分离吸附剂并取得上清液,用ICP-OES测定上清液中剩余Zn(II),Cu(II),Mg(II),K(I),Co(II),Ni(II)和Pb(II)浓度如表1,
表1上清液中离子浓度
离子 | Zn(II) | Cu(II) | Mg(II) | Co(II) | Ni(II) | Pb(II) |
浓度(mg/L) | 45.2 | 42.3 | 43.4 | 46.7 | 44.2 | 0.9 |
计算得到铅的吸附率为98.2%;
吸附剂经5次吸附解吸实验后对铅的吸附率为92.4%。
实施例2:前修饰锆基MOF吸附剂的方法,具体步骤如下:
(1)维持氮气氛围下,将2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸加入到甲醇溶剂中,搅拌溶解得到溶液A,溶液A在温度60℃下回流反应5.5h,蒸发溶剂至溶剂体积浓缩至10mL,采用乙醇和去离子水洗涤并分别浸泡20h,固液分离,固体干燥20h即得前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇,记为FHD;其中2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸的摩尔比为1∶2.0,溶液A中2,5-二氨基苯-1,4-二硫醇二盐酸盐的质量浓度为1.6g/mL,3-甲酰基-4-羟基苯甲酸的质量浓度为3.2g/mL;
(2)将前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇和ZrCl4溶解至N,N-二甲基甲酰胺中,加入浓盐酸,在温度122℃下回流反应72h,冷却至室温,固液分离,固体经N,N-二甲基甲酰胺和无水乙醇洗涤、浸泡,真空干燥即得2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇锆基MOF吸附剂,记为FHD-MOF;其中前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与ZrCl4的质量比为1∶1.05,浓盐酸的浓度为37wt%,前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与浓盐酸的固液比g∶mL为1.1∶0.5,N,N-二甲基甲酰胺与浓盐酸的150∶1.5;
吸附铅离子性能测定:
室温下将FHD-MOF(10mg)和含混合离子Zn(II),Cu(II),Mg(II),K(I),Co(II),Ni(II)和Pb(II)的溶液(pH 5,10mL,100mg/L)加入15mL离心管中,并在振荡机下以200rpm振荡速度振荡20h;离心分离吸附剂并取得上清液,用ICP-OES测定上清液中剩余Zn(II),Cu(II),Mg(II),K(I),Co(II),Ni(II)和Pb(II)浓度如表2,
表2.上清液中各离子浓度
离子 | Zn(II) | Cu(II) | Mg(II) | Co(II) | Ni(II) | Pb(II) |
浓度(mg/L) | 94.1 | 93.3 | 96.1 | 92.7 | 91.3 | 1.6 |
计算得到铅的吸附率为98.4%;
吸附剂经5次吸附解吸实验后对铅的吸附率为91.6%。
实施例3:前修饰锆基MOF吸附剂的方法,具体步骤如下:
(1)维持氮气氛围下,将2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸加入到甲醇溶剂中,搅拌溶解得到溶液A,溶液A在温度60℃下回流反应5.5h,蒸发溶剂至溶剂体积浓缩至10mL,采用乙醇和去离子水洗涤并分别浸泡24h,固液分离,固体干燥25h即得前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇,记为FHD;其中2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸的摩尔比为1:2.2,溶液A中2,5-二氨基苯-1,4-二硫醇二盐酸盐的质量浓度为1.8g/mL,3-甲酰基-4-羟基苯甲酸的质量浓度为3.96g/mL;
(2)将前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇和ZrCl4溶解至N,N-二甲基甲酰胺中,加入浓盐酸,在温度125℃下回流反应70h,冷却至室温,固液分离,固体经N,N-二甲基甲酰胺和无水乙醇洗涤、浸泡,真空干燥即得2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇锆基MOF吸附剂,记为FHD-MOF;其中前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与ZrCl4的质量比为1∶1.1,浓盐酸的浓度为38wt%,前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与浓盐酸的固液比g∶mL为1.1∶0.6,N,N-二甲基甲酰胺与浓盐酸的150∶2.0;
吸附铅离子性能测定:
室温下将FHD-MOF(10mg)和含混合离子Zn(II),Cu(II),Mg(II),K(I),Co(II),Ni(II)和Pb(II)的溶液(pH 5,10mL,150mg/L)加入15mL离心管中,并在振荡机下以200rpm振荡速度振荡20h;离心分离吸附剂并取得上清液,用ICP-OES测定上清液中剩余Zn(II),Cu(II),Mg(II),K(I),Co(II),Ni(II)和Pb(II)浓度如表3,
表3.上清液中各离子浓度
离子 | Zn(II) | Cu(II) | Mg(II) | Co(II) | Ni(II) | Pb(II) |
浓度(mg/L) | 144.2 | 146.5 | 143.5 | 144.7 | 140.2 | 2.7 |
计算得到铅的吸附率为98.2%;
吸附剂经5次吸附解吸实验后对铅的吸附率为90.9%。
实施例4:前修饰锆基MOF吸附剂的方法,具体步骤如下:
(1)维持氮气氛围下,将2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸加入到甲醇溶剂中,搅拌溶解得到溶液A,溶液A在温度65℃下回流反应5.5h,蒸发溶剂至溶剂体积浓缩至10mL,采用乙醇和去离子水洗涤并分别浸泡24h,固液分离,固体干燥25h即得前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇,记为FHD;其中2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸的摩尔比为1∶2.1,溶液A中2,5-二氨基苯-1,4-二硫醇二盐酸盐的质量浓度为1.8g/mL,3-甲酰基-4-羟基苯甲酸的质量浓度为3.78g/mL;
(2)将前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇和ZrCl4溶解至N,N-二甲基甲酰胺中,加入浓盐酸,在温度122℃下回流反应72h,冷却至室温,固液分离,固体经N,N-二甲基甲酰胺和无水乙醇洗涤、浸泡,真空干燥即得2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇锆基MOF吸附剂,记为FHD-MOF;其中前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与ZrCl4的质量比为1∶1.05,浓盐酸的浓度为38wt%,前驱体2′5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与浓盐酸的固液比g:mL为1.1∶0.5,N,N-二甲基甲酰胺与浓盐酸的150∶1.8;
吸附铅离子性能测定:
室温下将FHD-MOF(10mg)和含混合离子Zn(II),Cu(II),Mg(II),K(I),Co(II),Ni(II)和Pb(II)的溶液(pH 5,10mL,200mg/L)加入15mL离心管中,并在振荡机下以200rpm振荡速度振荡20h;离心分离吸附剂并取得上清液,用ICP-OES测定上清液中剩余Zn(II),Cu(II),Mg(II),K(I),Co(II),Ni(II)和Pb(II)浓度如表4,
表4.上清液中各离子浓度
离子 | Zn(II) | Cu(II) | Mg(II) | Co(II) | Ni(II) | Pb(II) |
浓度(mg/L) | 192.4 | 197.1 | 193.4 | 195.4 | 193.4 | 4.6 |
计算得到铅的吸附率为97.7%;
吸附剂经5次吸附解吸实验后对铅的吸附率为92.0%。
以上对本发明的具体实施方式作了详细说明,但是本发明并不限于上述实施方式,在本领域普通技术人员所具备的知识范围内,还可以在不脱离本发明宗旨的前提下作出各种变化。
Claims (9)
2.权利要求1所述前修饰锆基MOF吸附剂的方法,其特征在于,具体步骤如下:
(1)在氮气氛围下,将2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸加入到甲醇溶剂中,搅拌溶解得到溶液A,溶液A在温度60-65℃下回流反应5.0-6.0h,蒸发溶剂,采用乙醇和去离子水洗涤并分别浸泡20-24h,固液分离,固体干燥即得前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇,记为FHD;
(2)将前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇和ZrCl4溶解至N,N-二甲基甲酰胺中,加入浓盐酸,在温度120~125℃下回流反应70~72h,冷却至室温,固液分离,固体经N,N-二甲基甲酰胺和无水乙醇洗涤、浸泡,真空干燥即得前修饰锆基MOF吸附剂FHD-MOF。
3.根据权利要求2所述前修饰锆基MOF吸附剂的方法,其特征在于:步骤(1)2,5-二氨基苯-1,4-二硫醇二盐酸盐和3-甲酰基-4-羟基苯甲酸的摩尔比为1:2.0~2.2。
4.根据权利要求2所述前修饰锆基MOF吸附剂的方法,其特征在于:步骤(1)溶液A中2,5-二氨基苯-1,4-二硫醇二盐酸盐的质量浓度为1.6~1.8g/mL。
5.根据权利要求2所述前修饰锆基MOF吸附剂的方法,其特征在于:步骤(1)溶液A中3-甲酰基-4-羟基苯甲酸的质量浓度为3.20~3.96g/mL。
6.根据权利要求2所述前修饰锆基MOF吸附剂的方法,其特征在于:步骤(1)氮气的流速为0.5-1L/h。
7.根据权利要求2所述前修饰锆基MOF吸附剂的方法,其特征在于:前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与ZrCl4的质量比为1:1.0-1.1。
8.根据权利要求2所述前修饰锆基MOF吸附剂的方法,其特征在于:步骤(2)浓盐酸的浓度为36~38wt%,前驱体2'5-双(5-羟基-3-苯甲酸)亚氨基-1,4-苯二硫醇与浓盐酸的固液比g:mL为1.1:0.5-0.6,N,N-二甲基甲酰胺与浓盐酸的体积比为150:1.0-2.0。
9.权利要求1所述前修饰锆基MOF吸附剂用于选择性吸附溶液中铅离子。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211391590.6A CN115554989B (zh) | 2022-11-08 | 2022-11-08 | 一种前修饰锆基mof吸附剂及其制备方法与应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202211391590.6A CN115554989B (zh) | 2022-11-08 | 2022-11-08 | 一种前修饰锆基mof吸附剂及其制备方法与应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115554989A true CN115554989A (zh) | 2023-01-03 |
CN115554989B CN115554989B (zh) | 2023-09-05 |
Family
ID=84768183
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202211391590.6A Active CN115554989B (zh) | 2022-11-08 | 2022-11-08 | 一种前修饰锆基mof吸附剂及其制备方法与应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115554989B (zh) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3959149A (en) * | 1970-08-28 | 1976-05-25 | Nippon Soda Company Limited | Isocyanate resin absorbent for free chlorine, heavy metals and heavy metallic compounds |
CN105175295A (zh) * | 2015-09-24 | 2015-12-23 | 南昌航空大学 | 一种巯基功能化MOFs材料的制备及其吸附去除水体中重金属离子的应用 |
CN109569520A (zh) * | 2018-11-01 | 2019-04-05 | 昆明理工大学 | 一种改性金属有机骨架复合材料及其制备方法和应用 |
CN110128669A (zh) * | 2019-05-13 | 2019-08-16 | 多助科技(武汉)有限公司 | 一种改性锆基MOFs材料及其制备和应用 |
-
2022
- 2022-11-08 CN CN202211391590.6A patent/CN115554989B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3959149A (en) * | 1970-08-28 | 1976-05-25 | Nippon Soda Company Limited | Isocyanate resin absorbent for free chlorine, heavy metals and heavy metallic compounds |
CN105175295A (zh) * | 2015-09-24 | 2015-12-23 | 南昌航空大学 | 一种巯基功能化MOFs材料的制备及其吸附去除水体中重金属离子的应用 |
CN109569520A (zh) * | 2018-11-01 | 2019-04-05 | 昆明理工大学 | 一种改性金属有机骨架复合材料及其制备方法和应用 |
CN110128669A (zh) * | 2019-05-13 | 2019-08-16 | 多助科技(武汉)有限公司 | 一种改性锆基MOFs材料及其制备和应用 |
Non-Patent Citations (3)
Title |
---|
JIALI TANG ET AL.: "Highly efficient metal-organic frameworks adsorbent for Pd(II) and Au(III) recovery from solutions: Experiment and mechanism", 《ENVIRONMENTAL RESEARCH》, vol. 210, pages 2 * |
JINGGUO YU ET AL.: "Simultaneous Determination of Cd2+, Cu2+, Pb2+ and Hg2+ Based on 1, 4-Benzenedithiol-2, 5-diamino-hydrochloride-1, 3, 5-triformylbenzene Covalent-Organic Frameworks", 《CHEMISTRYSELECT》, vol. 5, no. 40, pages 12346 * |
WEI RUAN ET AL.: "Fabrication of Uio-66-NH2 with 4, 6-Diamino-2-mercaptopyrimidine facilitate the removal of Pb2+ in aqueous medium: Nitrogen and sulfur act as the main adsorption sites", 《FUEL PROCESSING TECHNOLOGY》, vol. 236, pages 2 * |
Also Published As
Publication number | Publication date |
---|---|
CN115554989B (zh) | 2023-09-05 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN104226238B (zh) | Ni2+吸附剂的制备及其吸附方法 | |
CN106824113B (zh) | 一种咪唑类离子液体改性壳聚糖吸附剂的制备及其应用 | |
CN105944680A (zh) | 一种吸附分离丙烯丙炔的方法 | |
Liu et al. | Synthesis, post-modification and catalytic properties of metal-organic framework NH2-MIL-53 (Al) | |
CN112452302A (zh) | 三维镓印迹五倍子单宁硅基复合材料及其在回收镓中的应用 | |
CN114768780B (zh) | 一种Zn-Fe普鲁士蓝类似物复合材料的制备方法及应用 | |
CN115430405B (zh) | 一种修饰锆基mof吸附剂及其制备方法与应用 | |
JP2020019844A (ja) | セルロース誘導体、及びこれを含む重金属除去材、並びにこれを用いた重金属除去方法 | |
CN111019147A (zh) | 一种金属有机骨架吸附剂、一步制备方法及其应用 | |
CN115554988B (zh) | 一种有机链修饰锆基mof吸附剂及其制备方法与应用 | |
CN115554989A (zh) | 一种前修饰锆基mof吸附剂及其制备方法与应用 | |
KR20140004576A (ko) | 순환 공정이 가능한 독성 음이온의 제거 방법 | |
CN110420616B (zh) | 一种四氧化三铁/四硫化钼复合体及其制备方法和应用 | |
CN115558122B (zh) | 一种锆基mof吸附剂及其制备方法与应用 | |
JP2020019845A (ja) | セルロース誘導体、及びこれを含む重金属除去材、並びにこれを用いた重金属除去方法 | |
CN115160580B (zh) | 一种新型金属有机聚合物的制备及其对低浓度金的高效高选择性吸附 | |
CN114479109B (zh) | 一种含n、s金属有机框架材料的制备及应用 | |
CN115814767A (zh) | 一种配位聚合物吸附剂CPs-ECL的制备方法与应用 | |
AU2020103008A4 (en) | Chelating resin with 1-methanesulfonylpiperazine as ligand, and preparation method and use thereof | |
Yan et al. | Facile synthesis of poly-dithiocarbamate for efficient removal of heavy metals from wastewater | |
Pereira et al. | 4-amine-2-mercaptopyrimidine modified silica gel applied in Cd (II) and Pb (II) extraction from an aqueous medium | |
CN104841385A (zh) | 负载纳米氧化铁的网状多孔重金属吸附材料及制备方法 | |
CN110354814B (zh) | 锌基质MOFs材料及其在钒吸附中的应用 | |
CN113070041A (zh) | 一种氧化石墨烯-有机复合吸附材料及其制备方法和应用 | |
CN112295549A (zh) | 一种选择性分离金的吸附剂及其制备方法与应用 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |