Page 136 - 《精细化工》2023年第4期
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g822g ㏳ࡃጒ FINE CHEMICALS す 40 ࢤ
Tescan ڙथ喠QCA 20 ᣒ㼓㻿≸䄂З喑ᓤప Dataphysics 1.3 GO/TiO 2 ㏠ㆠฺवᱽ᫆⮱ݣิ
ڙथ喠Nicolet iS10 ֲ䛹णअᢏ㏏ใٶ䅞З喑㒻ప 䛴⩕⊥⌺-↶⋭∂व GO/TiO 2 ㏠ㆠฺवᱽ᫆ [31] ȡ
Seminars ڙथ喠752N ㉘ใܳٶٶᏓ䃎喑̷⊤㣮ࡻ 1.3.1 GO/TiO 2 ㏠ㆠฺवᱽ᫆⮱ݣิ
ឭЗகᰶ䭽ڙथȡ 仃ٵ喑ा 200 mL ᬍⅡΆ䚴͚ߍڒ 0.5 g GO Ꭳ
1.2 GO ⮱ݣิ ౕ 400 W ⮱ߌ⢴হ 25 Ď̸䊲ฝᡜ㢎 1 h喑ᄳ GO ᒨ
Ҭ⩕ᩦ䔈⮱ Hummers ∂ݣิ GO [30] ȡౕ–5 Ď Ꮒܳ᪐ౕᬍⅡΆ䚴͚喠♣ऻ喑ౕࣺᏁҀ㈨͚ߍڒ
⮱⊡̸ᄳ 5 g ⴠㆶহ 5 g NaNO 3 ߍڒ 240 mL ⊀ 10 mL 䧈䚥ఈ̮䚜喑Ꭳౕ 25 Ď̸ᤲ៹ 1 h喠ᣒⱭ喑
䚥͚喑Ꭳ㒛λⷮ߈ᤲ៹க͚ᤲ៹喠ԊᠮࣺᏁҀ㈨ ౕ 600 r/min 䒙䕌̸ᤲ៹喑В 0.85 mL/min ⮱≮䕌ߍ
⍖Ꮣͧ 0 Ď喑㑀ᚏाҀ㈨͚ߍڒ 30 g KMnO 4 喠ౕ ڒ 50 mL ࣨ⻨ၽⅡ喑ౕ 80 Ď̸ࣺᏁ 5 h喠ᰭऻ喑ࣺ
0 Ď̸ᠮ㐚ᤲ៹ 8 h ऻ᧑䮑⊡喑ࡴ⍖㜠 35 Ďᤲ៹ ᏁҀ㈨㏼␑-ࣨ⻨ၽⅡ≄⋑ᓗ⣜ 5 ⁎ऻ喑ౕ 60 Ď
4 h喠♣ऻ喑㑀ᚏ␡ߍ 200 mL 䉕䛼ܳͧ 5%⮱⼭ ̸✒ 12 h ᓄݝ GO/TiO 2 ㏠ㆠฺवᱽ᫆ȡ
䚥喑Ҁ㈨䔽⌽ࡴ⍖㜠 98 Ď喑Ԋ⍖ 1 h喠ںߍڒ 400 mL 1.3.2 PEG/GO/TiO 2 ㏠ㆠฺवᱽ᫆⮱ݣิ
ࣨ⻨ၽⅡহ 50 mL 䉕䛼ܳͧ 30%⮱ࣹ⅔Ⅱ喑ᤲ៹ ᄳ 0.60 g GO/TiO 2Ƞ2.00 g PEG-2000 হ 250 mL
1 h喠ᣒⱭ喑ᄳᗙ≷⋟⻨ᓰऻࣨ䮑̷⌲⋟喑⩕ 300 mL ᬍⅡΆ䚴ڞ⌤喑ౕ 30 Ď̸ᤲ៹ 30 min ऻߍڒ 0.25 g
䉕䛼ܳͧ 5%⮱⼭⯽䚥⌲≄↶⋭喠ᰭऻ喑⩕ࣨ⻨ၽ ⊀⯽䚥喑ࡴ⍖㜠 70 Ď喑Ꭳౕ䄒⍖Ꮣ̸ᤲ៹ 3 hȡ䕇
Ⅱฺࣺ⌲≄↶⋭喑Ⱑݝ̷⌲⋟⮱ pH ͧ 7喠ϔ➖͚ߍ 䓴␑-ࣨ⻨ၽⅡ≄⋑ᓗ⣜ 5 ⁎ऻ㣤ᓄᣒϔ➖
ڒ䔯䛼ࣨ⻨ၽⅡ喑ౕ 400 W ⮱ߌ⢴̸䊲ฝ 2 h喑♣ PEG/GO/TiO 2 ㏠ㆠฺवᱽ᫆喑ϔ➖ౕ 60 Ďⱌ⾧
ऻᄳᗙ⊛⋟ౕ–40 Ďۤۨ✒ 24 h喑ᓄݝ GOȡ У̸✒ 12 hȡࣺᏁᐼຯ̸喟
GO ᅯ䬡ᵥ⩌䪬 TiO 2 ㏠ㆠㆿၽ喑㣤ᓄ GO/TiO 2 ᡜ㢎 30 min喑ᓄݝܳ᪐⋟ A喠♣ऻ喑ᄳ 6 g PVDF
㏠ㆠฺवᱽ᫆ȡ䚜ࡃࣺᏁᄳ GO/TiO 2 ㏠ㆠฺवᱽ᫆ হ 2 g PEG-2000 ߍڒܳ᪐⋟ A ͚喑㣤ᓄ䨥㛉⋟喑
㶕䲏⮱ÿCOOH হ PEG ⮱ÿOH 㐀व喑Ⴙ PEG ᄦ Ꭳౕ 70 Ď̸В 350 r/min ⮱䒙䕌ᤲ៹ 12 h喑ऻ
GO/TiO 2 ㏠ ㆠฺवᱽ᫆ ⮱ᣒ喑ᓄ ݝᣒϔ➖ ᄳ䨥㛉⋟㒛λ 50 Ď★マڲ䲆㒛 24 h 㙞∎ȡ⩕ 170
PEG/GO/TiO 2 ㏠ㆠฺवᱽ᫆ȡ ȝm ࣇ⮱䧏ܭᄳ䨥㛉⋟⊯ౕ⣨⦰Წ̷喑Ꭳᔘ䕌⊥ڒ
1.4 ฺव䊲␑㛉⮱ݣิ 25 Ď⮱ࣨ⻨ၽⅡ܊ధ⊡͚㣤ᓄ PEG/GO/TiO 2 ㏠ㆠ
䛴⩕䲋⏣ ݯ䄞ᄩ↶ ⋭Ⱕܳ⻨ ∂ݣิ ฺवᱽ᫆䉕䛼ܳͧ 0.60%⮱ PEG/GO/TiO 2 /PVDF
[32]
PEG/GO/TiO 2 /PVDF ฺव䊲␑㛉 ȡڤҀͧ喟仃ٵ喑ᄳ ฺव䊲␑㛉喑䃝ͧ 0.60% PEG/GO/TiO 2 /PVDFȡ
300 mg PEG/GO/TiO 2 ㏠ㆠฺवᱽ᫆ܳ᪐ౕ 45 mL ڣฺ҆व䊲␑㛉⮱ݣิ∂ह̷喑ऱฺ͗व䊲
3
DMAc喍ჳᏓͧ 0.937 g/cm 喎͚喑ᤲ៹ 30 min ऻ䊲ฝ ␑㛉⮱࣌᫆㏱ࣷ⩕䛼㻮㶕 1ȡ
㶕 1 ฺव䊲␑㛉䨥㛉⋟⮱㏱
Table 1 Composition of composite ultrafiltration membrane casting solutions
㛉ऺ⼝ PVDF/g PEG-2000/g PEG/GO/TiO 2/mg GO/TiO 2/mg GO/mg TiO 2/mg DMAc/mL
PVDF 6 2 0 0 0 0 45
0.24% GO/PVDF 6 2 0 0 120 0 45
0.24% TiO 2/PVDF 6 2 0 0 0 120 45
0.24% GO/TiO 2/PVDF 6 2 0 120 0 0 45
0.12% PEG/GO/TiO 2/PVDF 6 2 60 0 0 0 45
0.24% PEG/GO/TiO 2/PVDF 6 2 120 0 0 0 45
0.60% PEG/GO/TiO 2/PVDF 6 2 300 0 0 0 45
0.89% PEG/GO/TiO 2/PVDF 6 2 450 0 0 0 45
1.19% PEG/GO/TiO 2/PVDF 6 2 600 0 0 0 45
∕喟㛉ऺ⼝͚⮱⮫ܳͧ䨥㛉⋟͚㏠ㆠᱽ᫆喍GO ᝃ TiO 2 ᝃ GO/TiO 2 ᝃ PEG/GO/TiO 2喎⮱䉕䛼ܳȡ
