CN115463638B - 一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法及其产品和应用 - Google Patents
一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法及其产品和应用 Download PDFInfo
- Publication number
- CN115463638B CN115463638B CN202210812492.9A CN202210812492A CN115463638B CN 115463638 B CN115463638 B CN 115463638B CN 202210812492 A CN202210812492 A CN 202210812492A CN 115463638 B CN115463638 B CN 115463638B
- Authority
- CN
- China
- Prior art keywords
- mos
- adsorbent
- defect
- interplanar spacing
- mercury ions
- 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.)
- Active
Links
- 239000003463 adsorbent Substances 0.000 title claims abstract description 55
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 101100069231 Caenorhabditis elegans gkow-1 gene Proteins 0.000 title description 3
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 47
- -1 mercury ions Chemical class 0.000 claims abstract description 44
- 230000007547 defect Effects 0.000 claims abstract description 28
- 238000001179 sorption measurement Methods 0.000 claims abstract description 24
- 238000006243 chemical reaction Methods 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 238000004729 solvothermal method Methods 0.000 claims abstract description 11
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 125000001741 organic sulfur group Chemical group 0.000 claims abstract description 9
- BQPIGGFYSBELGY-UHFFFAOYSA-N mercury(2+) Chemical compound [Hg+2] BQPIGGFYSBELGY-UHFFFAOYSA-N 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000010842 industrial wastewater Substances 0.000 claims description 20
- 239000008367 deionised water Substances 0.000 claims description 18
- 229910021641 deionized water Inorganic materials 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 18
- 239000012528 membrane Substances 0.000 claims description 16
- 239000000843 powder Substances 0.000 claims description 14
- 239000002351 wastewater Substances 0.000 claims description 14
- 238000002156 mixing Methods 0.000 claims description 13
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- 239000012046 mixed solvent Substances 0.000 claims description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 11
- 238000005406 washing Methods 0.000 claims description 9
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea group Chemical group NC(=S)N UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 claims description 8
- 239000000654 additive Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- APUPEJJSWDHEBO-UHFFFAOYSA-P ammonium molybdate Chemical group [NH4+].[NH4+].[O-][Mo]([O-])(=O)=O APUPEJJSWDHEBO-UHFFFAOYSA-P 0.000 claims description 6
- 239000011609 ammonium molybdate Substances 0.000 claims description 6
- 235000018660 ammonium molybdate Nutrition 0.000 claims description 6
- 229940010552 ammonium molybdate Drugs 0.000 claims description 6
- 239000007795 chemical reaction product Substances 0.000 claims description 6
- YUKQRDCYNOVPGJ-UHFFFAOYSA-N thioacetamide Chemical compound CC(N)=S YUKQRDCYNOVPGJ-UHFFFAOYSA-N 0.000 claims description 6
- DLFVBJFMPXGRIB-UHFFFAOYSA-N thioacetamide Natural products CC(N)=O DLFVBJFMPXGRIB-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Natural products NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 239000001099 ammonium carbonate Substances 0.000 claims description 4
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 4
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 4
- 239000001509 sodium citrate Substances 0.000 claims description 4
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 4
- 239000011684 sodium molybdate Substances 0.000 claims description 4
- 235000015393 sodium molybdate Nutrition 0.000 claims description 4
- TVXXNOYZHKPKGW-UHFFFAOYSA-N sodium molybdate (anhydrous) Chemical compound [Na+].[Na+].[O-][Mo]([O-])(=O)=O TVXXNOYZHKPKGW-UHFFFAOYSA-N 0.000 claims description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- 229920002873 Polyethylenimine Polymers 0.000 claims description 3
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 3
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 3
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 3
- 229910052961 molybdenite Inorganic materials 0.000 claims description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims 1
- 230000036571 hydration Effects 0.000 abstract description 4
- 238000006703 hydration reaction Methods 0.000 abstract description 4
- 239000011229 interlayer Substances 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 229910052976 metal sulfide Inorganic materials 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 238000003917 TEM image Methods 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 230000005180 public health Effects 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
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
- B01J20/02—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
- B01J20/0218—Compounds of Cr, Mo, W
-
- 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
- B01J20/0274—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 characterised by the type of anion
- B01J20/0285—Sulfides of compounds other than those provided for in B01J20/045
-
- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28033—Membrane, sheet, cloth, pad, lamellar or mat
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (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)
Abstract
本发明公开了一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法,以可溶性钼酸盐、有机硫源、缺陷生成剂为原料,经溶剂热反应进行制备。此外,还公开了利用上述(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法制得的产品和应用。本发明通过将MoS2的(002)晶面间距拓宽至大于汞离子水合半径,使得汞离子进入层间而进一步增加反应位点;同时形成多缺陷MoS2,将更多S2‑原子暴露,从而有效解决了传统金属硫化物对汞离子吸附速度慢,吸附容量低等技术问题。
Description
技术领域
本发明涉及汞离子吸附材料技术领域,尤其涉及一种(002)晶面间距拓宽并拥有较多缺陷的MoS2吸附剂材料的制备方法及其制得的产品,以及在含汞废水中汞脱除方面的应用。
背景技术
水体中的汞离子对公众健康和环境危害的威胁一直存在。金属汞离子在环境中不易降解,且可通过生物链的富集作用最终进入人体,严重威胁人体健康。因此,对于废水中汞离子的有效处理对于环境和人体健康均具有重要意义。
目前,对水体中汞离子的去除主要采用物理吸附的方式,常用的吸附剂有活性炭、沸石、高岭土以及石墨烯等。这些吸附剂主要依靠较大的比表面积将汞离子吸附在表面,因此通常具有较低的汞离子吸附容量、差的选择性以及弱的结合能力等缺点。有鉴于此,对于汞离子的化学吸附成为工业应用的热点,常用的以化学吸附为主的吸附剂主要是含S化合物,通过形成稳定的Hg-S化学键将汞离子去除。
MoS2为一种层状过渡金属硫化物,化学稳定性好。每一层中两个硫原子中间夹着一个钼原子构成S-Mo-S夹层,层与层之间是弱范德华力结合。常规的MoS2对汞离子的吸附主要是靠其边缘硫与汞离子的作用,但边缘硫的数量有限,对汞的吸附也有限。同时由于(002)晶面的间距较小,汞离子无法进入,大大减小了Hg离子与更多S2-离子接触的机会。
发明内容
本发明的目的在于克服现有技术的不足,提供一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法,通过将MoS2的(002)晶面间距拓宽至大于汞离子水合半径,使得汞离子进入层间而进一步增加反应位点;同时形成多缺陷MoS2,将更多S2-原子暴露,以有效解决传统金属硫化物对汞离子吸附速度慢,吸附容量低等技术问题。本发明的另一目的在于提供利用上述(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法制得的产品和应用。
本发明的目的通过以下技术方案予以实现:
本发明提供的一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法,包括以下步骤:
(1)以可溶性钼酸盐、有机硫源、缺陷生成剂为原料,所述可溶性钼酸盐、有机硫源的用量为按照摩尔比Mo∶S=1∶1.5~4;所述缺陷生成剂为柠檬酸、柠檬酸钠、聚乙烯吡咯烷酮、聚乙烯亚胺、三甲基十八烷基氯化铵中的一种或其组合,用量为按照摩尔比缺陷生成剂∶MoS2=0.01~0.5∶1;
(2)将去离子水与添加剂混合作为混合溶剂,所述添加剂为氨水、氯化氨、硫酸铵、碳酸铵中的一种或其组合,按照重量份数去离子水∶添加剂=100∶1~50;将所述原料加入混合溶剂中混合均匀,得到原料浓度为0.05~0.5mol/L的反应溶液;
(3)所述反应溶液在120~220℃温度下进行溶剂热反应,反应时间为8~12h,得到的反应产物用去离子水和无水乙醇各洗涤3~5次,经60~80℃烘干,即得到MoS2吸附剂粉末材料;
或者,在所述反应溶液中放入多孔无机膜作为支承体进行所述溶剂热反应,制备的MoS2吸附剂均匀生长于多孔无机膜的表面上,然后用去离子水冲洗5~10min,再用无水乙醇冲洗1~2min,经60~80℃烘干,得到附着在多孔无机膜上的MoS2吸附剂,即MoS2-无机膜。
上述方案中,本发明所述钼酸盐为钼酸铵或钼酸钠,所述有机硫源为硫脲或硫代乙酰胺。
本发明的另一目的通过以下技术方案予以实现:
本发明提供的利用上述(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法制得的产品,所述MoS2吸附剂其(002)晶面间距大于汞离子水合半径,优选地,为0.9~1.5nm。
本发明提供的上述产品的应用如下:
将所述MoS2吸附剂粉末材料分散于汞离子初始浓度为10~50mg/L的工业废水中,所述MoS2吸附剂粉末材料∶工业废水=0.5~5g∶1L,搅拌10~60min进行吸附处理,处理后的废水中汞离子的浓度<0.001mg/L;或者,
使汞离子初始浓度为10~50mg/L的工业废水流经所述MoS2-无机膜进行吸附处理,工业废水的流速为50~200mL/min,处理时间为15~30min,处理后的废水中汞离子浓度<0.001mg/L。
本发明具有以下有益效果:
(1)本发明提供了一种简单的制备(002)晶面间距拓宽及多缺陷MoS2的汞离子吸附剂的方法,所制得的吸附剂因存在较多的缺陷,使得更多S2-离子裸露在外,增大了S2-与汞离子的接触位点,提高了MoS2对汞离子的吸附效果;其次,制备的MoS2的(002)晶面间距被拓宽,可达到0.9~1.5nm,远大于汞离子的水合半径,汞离子可进入(002)晶面中与晶面内的S2-接触,进一步提高了MoS2对汞离子的吸附。
(2)以具有规则形状的多孔无机膜作为支承体,将本发明制备的(002)晶面间距拓宽及多缺陷MoS2吸附剂均匀生长于多孔的无机膜表面上,而形成MoS2-无机膜。当工业废水流经MoS2-无机膜后,工业废水会与生长于无机膜上的MoS2相接触,汞离子被吸附,可达到动态除汞过程。同时,被固定的MoS2吸附剂易于回收,不存在二次污染水源的问题。
附图说明
下面将结合实施例和附图对本发明作进一步的详细描述:
图1是本发明实施例得到的MoS2吸附剂的XRD图;
图2是本发明实施例得到的MoS2吸附剂的TEM图;
图3是本发明实施例使用的多孔无机膜(a:未吸附MoS2;b:吸附MoS2后的MoS2-无机膜);
图4是本发明实施例MoS2-无机膜的SEM图。
具体实施方式
实施例一:
1、本实施例一种将(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法,其步骤如下:
(1)以可溶性钼酸铵、硫脲、缺陷生成剂为原料,可溶性钼酸铵、硫脲的用量为按照摩尔比Mo∶S=1∶1.5;缺陷生成剂为聚乙烯吡咯烷酮,其用量为按照摩尔比缺陷生成剂∶MoS2=0.05∶1;
(2)将100份去离子水与10份氨水、20份氯化氨混合作为混合溶剂;将上述原料加入混合溶剂中混合均匀,得到原料浓度为0.2mol/L的反应溶液;
(3)上述反应溶液在180℃温度下进行溶剂热反应,反应时间为10h,得到的反应产物用去离子水和无水乙醇各洗涤3次,在烘箱中经60℃烘干,即制得MoS2吸附剂粉末材料;
或者,在上述反应溶液中放入多孔无机膜(见图3a,本实施例形状为长方体)作为支承体进行上述溶剂热反应,制备的(002)晶面间距拓宽及多缺陷MoS2吸附剂均匀生长于多孔无机膜的表面上,然后用去离子水冲洗5min,再用无水乙醇冲洗2min,在烘箱中经60℃烘干,得到附着在多孔无机膜上的MoS2吸附剂,即MoS2-无机膜(见图3b)。
2、本实施例制得的MoS2吸附剂的应用:
将5g上述MoS2吸附剂粉末材料分散于汞离子初始浓度为50mg/L的1L工业废水中,持续搅拌60min进行吸附处理,处理后的废水中汞离子的浓度<0.001mg/L。
使汞离子初始浓度为50mg/L的500mL工业废水流经上述长方体形状的MoS2-无机膜进行吸附处理,工业废水的流速为80mL/min,处理时间为20min,处理后的废水中汞离子的浓度<0.001mg/L。
实施例二:
1、本实施例一种将(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法,其步骤如下:
(1)以可溶性钼酸钠、硫代乙酰胺、缺陷生成剂为原料,可溶性钼酸钠、硫代乙酰胺的用量为按照摩尔比Mo∶S=1∶2;缺陷生成剂为柠檬酸和柠檬酸钠(按照摩尔比柠檬酸∶柠檬酸钠=1∶1),其用量为按照摩尔比缺陷生成剂∶MoS2=0.2∶1;
(2)将100份去离子水与20份碳酸铵混合作为混合溶剂;将上述原料加入混合溶剂中混合均匀,得到原料浓度为0.15mol/L的反应溶液;
(3)上述反应溶液在200℃温度下进行溶剂热反应,反应时间为12h,得到的反应产物用去离子水和无水乙醇各洗涤4次,在烘箱中经80℃烘干,即制得MoS2吸附剂粉末材料;
或者,在上述反应溶液中放入多孔无机膜(见图3a,本实施例形状为正方体)作为支承体进行上述溶剂热反应,制备的(002)晶面间距拓宽及多缺陷MoS2吸附剂均匀生长于多孔无机膜的表面上,然后用去离子水冲洗10min,再用无水乙醇冲洗2min,在烘箱中经80℃烘干,得到附着在多孔无机膜上的MoS2吸附剂,即MoS2-无机膜(见图3b)。
2、本实施例制得的MoS2吸附剂的应用:
将3g上述MoS2吸附剂粉末材料分散于汞离子初始浓度为10mg/L的1L工业废水中,持续搅拌60min进行吸附处理,处理后的废水中汞离子的浓度<0.001mg/L。
使汞离子初始浓度为10mg/L的1L工业废水流经上述正方体形状的MoS2-无机膜进行吸附处理,工业废水的流速为100mL/min,处理时间为15min,处理后的废水中汞离子的浓度<0.001mg/L。
实施例三:
1、本实施例一种将(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法,其步骤如下:
(1)以可溶性钼酸铵、硫代乙酰胺、缺陷生成剂为原料,可溶性钼酸铵、硫代乙酰胺的用量为按照摩尔比Mo∶S=1∶3;缺陷生成剂为聚乙烯亚胺,其用量为按照摩尔比缺陷生成剂∶MoS2=0.3∶1;
(2)将100份去离子水与40份硫酸铵混合作为混合溶剂;将上述原料加入混合溶剂中混合均匀,得到原料浓度为0.35mol/L的反应溶液;
(3)上述反应溶液在140℃温度下进行溶剂热反应,反应时间为9h,得到的反应产物用去离子水和无水乙醇各洗涤5次,在烘箱中经70℃烘干,即制得MoS2吸附剂粉末材料;
或者,在上述反应溶液中放入多孔无机膜(见图3a,本实施例形状为圆柱体)作为支承体进行上述溶剂热反应,制备的(002)晶面间距拓宽及多缺陷MoS2吸附剂均匀生长于多孔无机膜的表面上,然后用去离子水冲洗8min,再用无水乙醇冲洗1min,在烘箱中经70℃烘干,得到附着在多孔无机膜上的MoS2吸附剂,即MoS2-无机膜(见图3b)。
2、本实施例制得的MoS2吸附剂的应用:
将2g上述MoS2吸附剂粉末材料分散于汞离子初始浓度为30mg/L的1L工业废水中,持续搅拌30min进行吸附处理,处理后的废水中汞离子的浓度<0.001mg/L。
使汞离子初始浓度为30mg/L的100mL工业废水流经上述圆柱体形状的MoS2-无机膜进行吸附处理,工业废水的流速为150mL/min,处理时间为25min,处理后的废水中汞离子的浓度<0.001mg/L。
实施例四:
1、本实施例一种将(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法,其步骤如下:
(1)以可溶性钼酸盐、有机硫源、缺陷生成剂为原料,可溶性钼酸盐、有机硫源的用量为按照摩尔比Mo∶S=1∶4;缺陷生成剂为三甲基十八烷基氯化铵,其用量为按照摩尔比缺陷生成剂∶MoS2=0.35∶1;
(2)将100份去离子水与20份硫酸铵、20份碳酸铵混合作为混合溶剂;将上述原料加入混合溶剂中混合均匀,得到原料浓度为0.4mol/L的反应溶液;
(3)上述反应溶液在210℃温度下进行溶剂热反应,反应时间为8h,得到的反应产物用去离子水和无水乙醇各洗涤3次,在烘箱中经65℃烘干,即制得MoS2吸附剂粉末材料。
2、本实施例制得的MoS2吸附剂的应用:
将5g上述MoS2吸附剂粉末材料分散于汞离子初始浓度为20mg/L的1L工业废水中,持续搅拌60min进行吸附处理,处理后的废水中汞离子的浓度<0.001mg/L。
如图1所示,本发明实施例得到的MoS2吸附剂,MoS2衍射峰强度较弱,证明结晶性差,无定形的缺陷多;同时(002)晶面对应的衍射峰发生红移,说明(002)晶面间距增大。图2所示为MoS2边缘丰富的缺陷区域,以及间距为0.9nm的(002)晶面。
如图4所示,MoS2均匀致密的生长于多孔无机膜表面上。
Claims (1)
1.一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的应用,其特征在于:所述(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法包括以下步骤:
(1) 以可溶性钼酸盐、有机硫源、缺陷生成剂为原料,所述可溶性钼酸盐、有机硫源的用量为按照摩尔比Mo∶S=1∶1.5~4;所述钼酸盐为钼酸铵或钼酸钠,有机硫源为硫脲或硫代乙酰胺;所述缺陷生成剂为柠檬酸、柠檬酸钠、聚乙烯吡咯烷酮、聚乙烯亚胺、三甲基十八烷基氯化铵中的一种或其组合,用量为按照摩尔比缺陷生成剂∶MoS2=0.01~0.5∶1;
(2) 将去离子水与添加剂混合作为混合溶剂,所述添加剂为氨水、氯化氨、硫酸铵、碳酸铵中的一种或其组合,按照重量份数去离子水∶添加剂=100∶1~50;将所述原料加入混合溶剂中混合均匀,得到原料浓度为0.05~0.5 mol/L的反应溶液;
(3) 所述反应溶液在120~220℃温度下进行溶剂热反应,反应时间为8~12h,得到的反应产物用去离子水和无水乙醇各洗涤3~5次,经60~80℃烘干,即得到(002)晶面间距为0.9 nm的MoS2吸附剂粉末材料;
或者,在所述反应溶液中放入多孔无机膜作为支承体进行所述溶剂热反应,制备的MoS2吸附剂均匀生长于多孔无机膜的表面上,然后用去离子水冲洗5~10min,再用无水乙醇冲洗1~2min,经60~80℃烘干,得到附着在多孔无机膜上、(002)晶面间距为0.9 nm的MoS2吸附剂,即MoS2-无机膜;
将所述MoS2吸附剂粉末材料分散于汞离子初始浓度为10~50 mg/L的工业废水中,所述MoS2吸附剂粉末材料∶工业废水=0.5~5g∶1L,搅拌10~60min进行吸附处理,处理后的废水中汞离子的浓度<0.001 mg/L;或者,
使汞离子初始浓度为10~50 mg/L的工业废水流经所述MoS2-无机膜进行吸附处理,工业废水的流速为50~200 mL/min,处理时间为15~30min,处理后的废水中汞离子浓度<0.001 mg/L。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210812492.9A CN115463638B (zh) | 2022-07-11 | 2022-07-11 | 一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法及其产品和应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210812492.9A CN115463638B (zh) | 2022-07-11 | 2022-07-11 | 一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法及其产品和应用 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115463638A CN115463638A (zh) | 2022-12-13 |
CN115463638B true CN115463638B (zh) | 2023-11-14 |
Family
ID=84366672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210812492.9A Active CN115463638B (zh) | 2022-07-11 | 2022-07-11 | 一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法及其产品和应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115463638B (zh) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102284277A (zh) * | 2011-07-28 | 2011-12-21 | 中国科学院新疆理化技术研究所 | 一种汞离子吸附剂 |
CN106044843A (zh) * | 2016-06-02 | 2016-10-26 | 景德镇学院 | 多孔偏锡酸锌纳米片的制备方法 |
CN107362767A (zh) * | 2016-05-13 | 2017-11-21 | 中国科学院长春应用化学研究所 | 一种用扩宽片层间距的过渡金属硫化物吸附汞离子的方法 |
WO2018024183A1 (zh) * | 2016-08-01 | 2018-02-08 | 福建新峰二维材料科技有限公司 | 一种三维石墨烯/MoS2复合材料的制备方法 |
CN109326784A (zh) * | 2018-10-19 | 2019-02-12 | 郑州大学 | 磷掺杂MoS2负载石墨烯纳米片的制备方法及应用 |
CN110918108A (zh) * | 2019-12-02 | 2020-03-27 | 镇江市高等专科学校 | 一种MXene复合纳米材料及其制备方法和应用 |
CN112675805A (zh) * | 2021-01-25 | 2021-04-20 | 西北师范大学 | 一种羟基磷灰石纳米线复合二硫化钼吸附剂的制备方法 |
-
2022
- 2022-07-11 CN CN202210812492.9A patent/CN115463638B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102284277A (zh) * | 2011-07-28 | 2011-12-21 | 中国科学院新疆理化技术研究所 | 一种汞离子吸附剂 |
CN107362767A (zh) * | 2016-05-13 | 2017-11-21 | 中国科学院长春应用化学研究所 | 一种用扩宽片层间距的过渡金属硫化物吸附汞离子的方法 |
CN106044843A (zh) * | 2016-06-02 | 2016-10-26 | 景德镇学院 | 多孔偏锡酸锌纳米片的制备方法 |
WO2018024183A1 (zh) * | 2016-08-01 | 2018-02-08 | 福建新峰二维材料科技有限公司 | 一种三维石墨烯/MoS2复合材料的制备方法 |
CN109326784A (zh) * | 2018-10-19 | 2019-02-12 | 郑州大学 | 磷掺杂MoS2负载石墨烯纳米片的制备方法及应用 |
CN110918108A (zh) * | 2019-12-02 | 2020-03-27 | 镇江市高等专科学校 | 一种MXene复合纳米材料及其制备方法和应用 |
CN112675805A (zh) * | 2021-01-25 | 2021-04-20 | 西北师范大学 | 一种羟基磷灰石纳米线复合二硫化钼吸附剂的制备方法 |
Non-Patent Citations (2)
Title |
---|
"Three-dimensional MoS2/reduced graphene oxide aerogel as a macroscopic visible-light photocatalyst";Ruiyang Zhang等;《Chinese Journal of Catalysis》;第38卷;第313-320页 * |
"Tunable Molybdenum Disulfide-Enabled Fiber Mats for High-Efficiency Removal of Mercury from Water";Camrynn L. Fausey等;《ACS Applied Materials & Interfaces》;第12卷;第18446-18456页 * |
Also Published As
Publication number | Publication date |
---|---|
CN115463638A (zh) | 2022-12-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Shi et al. | A self-sufficient photo-Fenton system with coupling in-situ production H2O2 of ultrathin porous g-C3N4 nanosheets and amorphous FeOOH quantum dots | |
Huang et al. | Heavy metal ion removal of wastewater by zeolite-imidazolate frameworks | |
Anfar et al. | New functionalization approach synthesis of Sulfur doped, Nitrogen doped and Co-doped porous carbon: Superior metal-free Carbocatalyst for the catalytic oxidation of aqueous organics pollutants | |
He et al. | Recent progress on highly efficient removal of heavy metals by layered double hydroxides | |
Liang et al. | Magnetic Fe2O3/biochar composite prepared in a molten salt medium for antibiotic removal in water | |
Li et al. | Engineering unsaturated sulfur site in three-dimension MoS2@ rGO nanohybrids with expanded interlayer spacing and disordered structure for gaseous elemental mercury trap | |
CN107469765B (zh) | 一种硅藻土/铁酸镁复合材料的制备方法 | |
Zhang et al. | Fabrication of 1T-MoS2 nanosheets and the high-efficiency removal of toxic metals in aquatic systems: Performance and mechanisms | |
Tian et al. | Synthesis of a Ni 2 P/Ni 12 P 5 bi-phase nanocomposite for the efficient catalytic reduction of 4-nitrophenol based on the unique n–n heterojunction effects | |
Zhu et al. | Highly efficient adsorption of chromium on N, S-codoped porous carbon materials derived from paper sludge | |
Wang et al. | Mechanistic understanding of highly selective adsorption of bisphenols on microporous-dominated nitrogen-doped framework carbon | |
WO2023216729A1 (zh) | 一种回收废水中亚磷酸根离子的方法 | |
Yao et al. | Role of magnetic substances in adsorption removal of ciprofloxacin by gamma ferric oxide and ferrites co-modified carbon nanotubes | |
CN113058546B (zh) | 一种镧改性高岭土除磷剂及其制备方法和应用 | |
CN106334518A (zh) | 一种可回收的磁性磷吸附剂及其制备方法 | |
CN112023882A (zh) | 利用二维、氮掺杂纳米多孔碳材料处理吸附处理水体抗生素的方法 | |
Yu et al. | Facile decolorization of methylene blue by morphology-dependence δ-MnO2 nanosheets-modified diatomite | |
Wang et al. | One dimensional hierarchical nanoflakes with nickel-immobilization for high performance catalysis and histidine-rich protein adsorption | |
Jiang et al. | Highly dispersed Fe7S8 anchored on sp2/sp3 hybridized carbon boosting peroxymonosulfate activation for enhanced EOCs elimination though singlet oxygen-dominated nonradical pathway | |
Li et al. | Electronic modulation of S and N co-implanted carbon as fenton-like photocatalysts for water remediation | |
CN115463638B (zh) | 一种(002)晶面间距拓宽及多缺陷MoS2吸附剂的制备方法及其产品和应用 | |
Yu et al. | Selective removal of Cr (VI) using polyvinylpyrrolidone and polyacrylamide co-modified MoS2 composites by adsorption combined with reduction | |
CN111420681A (zh) | BMO/Bi2S3复合光催化剂及其制备方法与在还原六价铬中的应用 | |
Liu et al. | Elevated degradation of di-n‑butyl phthalate by activating peroxymonosulfate over GOCoFe2O4 composites: Synergistic effects and mechanisms | |
Zhang et al. | Construction of MoS42− intercalated NiAl-layered double hydroxide by solvent-free method for promoting photocatalytic degradation of antibiotics: Synergistic effect of oxygen vacancies and electron-rich groups |
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 |