Palygorskite was kindly provided by Jiangsu Sinitic Biotech Co., Ltd. (Xuyi, Jiangsu, China). The chemical composition of Pal clay mineral is SiO2 53.73%, Al2O3 10.90%, MgO 6.81%, CaO 3.08%, K2O 2.00%, and Fe2O3 7.84% (Table 1 ). Zn-Pal was prepared according to the method described by Yan et al [11 ]. In detail, palygorskite was first calcinated at around 300°C for 3 h in a muffle oven. After cooling down, palygorskite was mixed with ZnCl2 (ZnCl2≥98.0%; 4:1, wt/wt) purchased from Nanjing Chemical Reagent Co., Ltd. (Nanjing, Jiangsu, China) in a stainless steel blade grinder. The mixture was subsequently calcinated at 300°C for 3 h in a muffle oven. After cooling to room temperature, the mixture was washed repeatedly by deionized water until there was no white deposition generated in the washed solution when swigged with 0.1 mol/L AgNO3 solution. Finally, the washed mixture was collected and dried at around 105°C for 2 h in an air oven, and then ground through a 200-mesh sieve after cooling down. The amount of Zn adsorbed by palygorskite was 24.5 mg/g with inductively coupled plasma mass spectrometry (ICP-MS, Optima 2100 DV, Perkin Elmer, Waltham, MA, USA) and according to the method described by Yan et al [11 ].
Zncl2
Manufactured by Nanjing Chemical Reagent
Sourced in China
Zinc chloride (ZnCl2) is an inorganic compound that is a white crystalline solid at room temperature. It has the chemical formula ZnCl2 and a molar mass of 136.28 g/mol. Zinc chloride is a Lewis acid and is soluble in water and organic solvents.
Automatically generated - may contain errors
Lab products found in correlation
Sodium lignosulphonate, by Maclin Biochemical Technology (1 mentions)
Sodium chloride (nacl), by Nanjing Chemical Reagent (1 mentions)
Nabh4, by Nanjing Chemical Reagent (1 mentions)
Fecl3, by Nanjing Chemical Reagent (1 mentions)
Cacl2, by Nanjing Chemical Reagent (1 mentions)
Bacl2, by Nanjing Chemical Reagent (1 mentions)
Optima 2100 dv, by PerkinElmer (1 mentions)
Sodium hydroxide (naoh), by Nanjing Chemical Reagent (1 mentions)
Minipal 4 x ray fluorescence spectrometer, by Malvern Panalytical (1 mentions)
5 protocols using zncl2
1
Zn-Enriched Palygorskite Preparation
2
Metal Salts and Lignosulphonate Synthesis
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A variety of metal salts, including AgNO3, Ni(NO3)2, BaCl2, ZnCl2, CuCl2, CaCl2, KOH, NaCl, AlCl3, FeCl2, MgCl2, FeCl3, MnCl2, PbCl2, HgCl2, Co(NO3)2, and NaBH4 were purchased from Nanjing Chemical Reagent Co., Ltd. (Nanjing, China). Sodium lignosulphonate was obtained from Macklin Biochemical Technology Co., Ltd. (Shanghai, China). All the chemicals were analytical grade and used without further purification. All aqueous solutions were made using deionized water.
3
Preparation of Zinc-Modified Palygorskite
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The Pal was kindly offered by Jiangsu Sinitic Biotech Co., Ltd. (Xuyi, Jiangsu, China) and passed through a 200-mesh sieve (diameter, 0.074 mm). The main chemical composition of Pal determined by a Minipal 4X-ray fluorescence spectrometer (PAN analytical Co., Eindhoven, Netherlands) are listed in the following: SiO2, 59.11%; MgO, 12.75%; Al2O3, 10.31%; CaO, 7.42%; Fe2O3, 6.21%; Na2O, 1.27%; and K2O, 1.19%.
ZnPal was prepared according to method of solid state ion exchange as previously described by Yan et al [16 ]. Namely, Pal was firstly calcinated at around 300°C for 1 h in the muffle oven. After cooling down, Pal was mixed with ZnCl2 (ZnCl2 ≥98.0%; 4:1, wt/wt) purchased from Nanjing Chemical Reagent Co., Ltd. (Nanjing, Jiangsu, China) in a stainless steel blade grinder (HJ-6A, Changzhou Guohua Electric Appliance Co., Ltd., Changzhou, Jiangsu, China). The mixture was subsequently calcinated at 300°C for 3 h in a muffle oven. After cooling down to room temperature, the mixture was washed repeatedly by deionized water until there was no white deposition generated in the washed solution when swigged with 0.1 mol/L AgNO3 solution. Finally, the washed mixture were collected and dried at around 105°C for 2 h in an air oven, and then passed through a 200-mesh sieve after cooling down. The amount of Zn adsorbed by Pal was 47.15 mg/g.
ZnPal was prepared according to method of solid state ion exchange as previously described by Yan et al [16 ]. Namely, Pal was firstly calcinated at around 300°C for 1 h in the muffle oven. After cooling down, Pal was mixed with ZnCl2 (ZnCl2 ≥98.0%; 4:1, wt/wt) purchased from Nanjing Chemical Reagent Co., Ltd. (Nanjing, Jiangsu, China) in a stainless steel blade grinder (HJ-6A, Changzhou Guohua Electric Appliance Co., Ltd., Changzhou, Jiangsu, China). The mixture was subsequently calcinated at 300°C for 3 h in a muffle oven. After cooling down to room temperature, the mixture was washed repeatedly by deionized water until there was no white deposition generated in the washed solution when swigged with 0.1 mol/L AgNO3 solution. Finally, the washed mixture were collected and dried at around 105°C for 2 h in an air oven, and then passed through a 200-mesh sieve after cooling down. The amount of Zn adsorbed by Pal was 47.15 mg/g.
4
Analytical-Grade Reagents for Paper
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All of the reagents are of analytical grade (i.e., purity higher than 99.9 %) and used without further purification. ZnCl2 and NaOH were analytical grade from Nanjing Chemical Reagent Factory, China. Starch and plain papers (art base papers) with base weight of 90 g/m2 were supplied by the Gold East Paper Company, China.
5
Synthesis of Zn-modified Palygorskite
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The Pal was kindly provided by Jiangsu Sinitic Biotech Co., Ltd. (Xuyi, Jiangsu, P. R. China) and sieved by a 200-mesh sieve (diameter, 0.074 mm). The main chemical compositions of Pal determined by a Minipal 4X-ray fluorescence spectrometer (PANalytical, Netherland) are listed in the following: SiO2, 59.11%; MgO, 12.75%; Al2O3, 10.31%; CaO, 7.42%; Fe2O3, 6.21%; Na2O, 1.27% and K2O, 1.19%.
ZnPal was prepared using solid state ion exchange method as previously described by Yan et al. (2016). In detail, Pal was firstly calcinated at around 300°C for 1 h in the muffle oven. After cooling down, Pal was mixed with ZnCl2 (ZnCl2 ≥98.0%; 4:1, wt/wt) purchased from Nanjing Chemical Reagent Co., Ltd. (Nanjing, Jiangsu, P. R. China) in a stainless steel blade grinder. The mixture was subsequently calcinated at 300°C for 3 h in a muffle oven. After cooling down to room temperature, the mixture was washed repeatedly by deionized water until there was no white deposition generated in the washed solution when swigged with 0.1 mol/L AgNO3 solution. Finally, the washed mixture were collected and dried at around 105°C for 2 h in an air oven, and then ground through a 200-mesh sieve after cooling down. The amount of Zn adsorbed by Pal was 47.15 mg/g.
ZnPal was prepared using solid state ion exchange method as previously described by Yan et al. (2016). In detail, Pal was firstly calcinated at around 300°C for 1 h in the muffle oven. After cooling down, Pal was mixed with ZnCl2 (ZnCl2 ≥98.0%; 4:1, wt/wt) purchased from Nanjing Chemical Reagent Co., Ltd. (Nanjing, Jiangsu, P. R. China) in a stainless steel blade grinder. The mixture was subsequently calcinated at 300°C for 3 h in a muffle oven. After cooling down to room temperature, the mixture was washed repeatedly by deionized water until there was no white deposition generated in the washed solution when swigged with 0.1 mol/L AgNO3 solution. Finally, the washed mixture were collected and dried at around 105°C for 2 h in an air oven, and then ground through a 200-mesh sieve after cooling down. The amount of Zn adsorbed by Pal was 47.15 mg/g.
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