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Table of Content
25 January 2015, Volume 35 Issue 1
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Original Paper
Preparation and properties of nano titanium dioxide/diatomite composite materials
DING Shiwen,Liu Tao,Li Tong,Guo Yang
2015, 35(1): 27-33. DOI:
10.3969/j.issn.1000-1565.2015.01.006
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The photocatalytic properties of nanosized TiO2/diatomite composites were studied with acid red 3R as waste water under solar light irradiation of 91700 uw/cm2 and ultraviolet irradiation of 499 uw/cm2. It was explored the best condition for nano TiO2 / diatomite composite material preparation in the experiment. The samples were characterized by SEM, XRD, EDS and IR analysis. The effect of pH, illumination time, and initial concentration of dye on catalytic performance were also investigated in detail. It showed that the best results was refluxed under acidic conditions for 75min, refluxed under neutral conditions 2h, TiO2 and diatomite material ratio 1:3 photocatalytic composite obtained. It can be found that the composite material exhibited better performance with longer illumination time and lower concentration of dye when the pH value of the solution was fixed at 3.
The properation of waterbone aluminum pigment based on oxidizing of Ni2+ and corrosion inhibition of phosphate
MA Zhiling, LI Cuicui, WEI Huimian
2015, 35(1): 34-39. DOI:
10.3969/j.issn.1000-1565.2015.01.007
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The corrosion inhibition waterborne aluminum pigments were prepared by using NiSO4?7H2O oxidized aluminum to make the surface hydroxylation, and the phenol ether phosphate TXP-10 as the corrosion inhibitor. FTIR and XRD results indicated that nickel ion oxidized aluminum on the aluminum pigment surface formed the boehmite structure aluminum oxyhydroxide, and the boehmite can adsorbe TXP-10 to achieve the corrosion inhibition. The influence on corrosion inhibition by composition and pH value of the preparation medium, the dosage of NiSO4?7H2O and TXP - 10 were studied. The results showed that at neutral condition, 40.00 g aluminum pigment was oxidized by 0.30 g NiSO4?7H2O in the volume ratio of isopropyl alcohol/water = 100/15, and 4.00 g TXP-10 were adsorped, the waterborne aluminum pigments exhibited best corrosion resistance.
null
JIN Qiu, ZHAO Shiju, XIE Puhui, SU Tongfu
2015, 35(1): 40. DOI:
10.3969/j.issn.1000-1565.2015.01.008
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Hypercrosslinked resin BE-CME was synthesised in one pot using simple aromatic molecule benzene and chloromethyl methyl ether (CME), using anhydrous ZnCl
2
and FeCl
3
as catalyst. The chemical structure of resin BE-CME was characterized by IR, elemental analysis and BET methods. The results indicated that the specific surface area of resin BE-CME was 812.43m
2
/g. The postcrosslinking reaction of BE-CME was carried out use the unreacted chloromethyl group on resin BE-CME. After postcrosslinked the specific surface area of P-BE-CME increased to 974.37m
2
/g. Batch adsorption runs of aniline in aqueous solution onto adsorbent BE-CME and P-BE-CME were researched. The adsorption capacity of aniline on P-BE-CME was larger than that on BE-CME and XAD-4. The adsorption process for aniline onto the resins was proved to be exothermic
Original Paper
Synthesis and characterization of 5,10,15,20-tetra[4-(2,3-epoxypropoxy)phenyl]porphyrin
WANG Miaomiao, LIU Yaojun, WANG Yuan, WANG Yaohui, ZHAO Hongchi
2015, 35(1): 48-53. DOI:
10.3969/j.issn.1000-1565.2015.01.009
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5,10,15,20-tetra(4-hydroxylphenyl)porphyrin (THPP) was synthesized by using p-hydroxybenzaldehyde and pyrrole as raw materials, propionic acid, acetic acid and nitrobenzene as solvent. 5,10,15,20-tetra[4-(2,3-epoxypropoxy)phenyl]porphyrin (TEPPP) was prepared by using THPP and epichlorohydrin as materials in isopropanol with sodium hydroxide as catalyst. The chemical structure and optical properties of THPP and TEPPP were characterized and tested by Fourier transform infrared spectrometer (FTIR), nuclear magnetic resonance spectrometer (NMR), ultraviolet-visible (UV-Vis) spectrophotometer and spectrofluorophotometer, respectively. The absorption peaks at 1 349 cm-1 and 916 cm-1 are attributed to C = N bond stretching vibration absorption peaks of TEPPP porphyrin ring and C―O―C bond asymmetric stretching vibration absorption peak of epoxide ring in FTIR spectrum of TEPPP, respectively. In 1H NMR spectrum of TEPPP, the peak area ratio of 5 chemical shift peaks was 1:1:1:1:1 between 2.92 ppm to 4.60 ppm, which was consisted with the ratio of the hydrogen atom number of epoxy group. The absorption peaks of TEPPP were similar to those of porphyrin in UV-Vis spectrum. The fluorescence properties of THPP and TEPPP were studied by fluorescence spectroscopy and fluorescence quantum yield were 0.08 and 0.16, respectively.
A new Waugh molybdate formulated as (NH
4
)
2
(C
5
H
6
N)
4
MnMo
9
O
32
·8H
2
O has been isolated by reacting of (NH
4
)
6
MnMo
9
O
32
·6H
2
O and pyridine in aqueous solution, and characterized by single X-ray diffraction, elemental analysis, IR
and solid UV-Vis diffuse reflectance spectroscopy. Crystal structural analysis indicate that the title compound crystallizes in the monoclinic system with space group
P
2
1
/c
,
a
= 2.1805(17) nm,
b
= 1.4394(11) nm,
c
= 1.5707(12) nm,
β
= 106.68(10)°,
V
= 4.7225(6) nm
3
,
Z
= 4,
D
c
= 3.386g cm
-3
,
R
1
= 0.0586,
wR
2
= 0.1831 (
I
>2
,
GOF
= 1.058.
LIUXuemei,WANGXiaofei,LIUManfei,JIANGFang
2015, 35(1): 153. DOI:
10.3969/j.issn.1000 1565.2015.02.008
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Journal Information
双月刊,1962年创刊
主管:河北省教育厅
主办:河北大学
编辑出版:《河北大学学报(自然科学版)》编辑部
主 编:傅广生
ISSN:1000-1565
CN:13-1077/N
邮发代号:18-257
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