Page 121 - 《精细化工》2023年第4期
P. 121
す 4 䲠ͦͦ喑ぶ: ็ߌ㘪㏠ㆠٶ᩼ݯ NaYF 4 ńYb,Tm@NaGdF 4 ńYb@PDA/PEI-MnO 2 ⮱ݣิࣷោ㣹ᕔ㘪g807g
䲆⩢ᢿ߈䒰ᑧ喑ᰶߖλڣౕ⏣⋟͚⮱࠭ܳ᪐ [23] ȡ
䮼Ɑ䉌⩢ᕔ MnO 2 䉌䒪䛼⮱๔喑UPM ⮱ Zeta ⩢Ѻ
ϻ 27.7 mV 䭺ѻ㜠 7.4 mV喑Zeta ⩢Ѻթ⮱ۼᄼ̺ݖ
λㆿၽౕ⏣⋟͚⮱⽠Ⴧܳ᪐ȡऱᵤ৮⮱ᎠⅡ߈႓
ㆿᒱ喍D h 喎̻็ܳ᪐㈨ຯఫ 5b ȡUP ⮱ D h
թ̻็ܳ᪐㈨ܳݘͧ 175 nm হ 0.157喑UPM-1Ƞ
UPM-2 হ UPM-3 ⮱ D h թܳݘͧ 181Ƞ183 হ 251 nmȡ
̭䲏喑MnO 2 ↶⼜䛼⮱็ᑂ䊤 UPM ㆿᒱ⮱๔喠
हᬣ喑̺䭺ѻ⮱ Zeta ⩢ѺҬㆿၽ䬡⮱⩢㢤ᢿ߈
ۼᑞ喑䷄ㆿౕ⏣⋟͚ᰡღᭀࣾ⩌ఏ㖇喑ᄩ㜡 Zeta ⩢
Ѻᰭᄼ⮱ UPM-3 ⮱ D h ܧ⣝γᬻ᭫๔ȡ̷䔝ٶ᩼
ݯ⮱็ܳ᪐㈨ܳݘͧ 0.252Ƞ0.240 হ 0.240喑ࣺ
ܧㆿᒱܳጰᕨҀ䒰⾱喑䔆ज㘪ᓄ⯷λᩜࡃ PEI 䨫⮱
⾧䬡Ѻ䭨᩵Ꮑᄦㆿၽఏ㖇⮱䭽ݣ҉⩕ȡ
ఫ 5 UP হ UPM ⮱ Zeta ⩢Ѻ喍a喎হㆿᏓܳጰ喍b喎
Fig. 5 Zeta potentials (a) and size distribution (b) of UP
and UPM
2.3 ٶ႓ᕔ䉕
ᵤ৮⮱ UV-Vis 䅞ຯఫ 6a ȡⰥ℁λ UCNPs喑
ఫ 4 UPM-3 ⮱ XPS ڕ䅞喍a喎ࣷ Mn 2p喍b喎ȠN 1s喍c喎
Ḃ㞟 PDA ⮱ႅౕҬ UP ౕ 300~800 nm 㠰డ⮱॥ᩣ
হ Gd 4d喍d喎⮱ XPS ㏳䅞 㘪߈ᑧȡ䮼Ɑ MnO 2 ౕㆿၽ㶕䲏↶⼜䛼⮱็喑
Fig. 4 XPS survey spectrum (a) and XPS fine spectra of
Mn 2p (b), N 1s (c) and Gd 4d (d) of UPM-3 UPM ౕ 350~800 nm ⮱ٶ႓॥ᩣ㘪߈䔽⌽ᑧ喑ᄦ
Ꮑλ MnO 2 ͚ Mn (Ė)⮱ Mn 3d ⩢ၽ⮱ d-d 㘪ፓ䋰䓮ȡ
2.2 Zeta ⩢Ѻহᅧᄥܳጰ ᵤ৮⮱̷䒙ᢏࣾᄱٶ䅞ຯఫ 6b ȡౕ 980 nm
ᵤ৮⮱ Zeta ⩢Ѻթຯఫ 5a ȡ NIR ٶ⮱⓭̸ࣾ喑UCNPs ౕ 345Ƞ362Ƞ452 হ 476 nm
3+
जВⰸܧ喑UP ⮱ Zeta ⩢Ѻͧ 38.2 mV喑ᬻ᭫倅 ั⮱ࣾᄱምܳݘᄦᏁλ Tm ⮱ I 6 ĺ F 4 Ƞ D 2 ĺ H 6 Ƞ
3
1
1
3
3
1
3
λ̺⌨ߍ PEI ᬣݣิ⮱ UP ᄦ⚔ᵤ৮⮱ Zeta ⩢Ѻթ 1 D 2 ĺ F 4 হ G 4 ĺ H 6 䋰䓮 [17] ȡ⩞λ PDA ᄦ NIR ٶ
喍16.7 mV喎喑Zeta ⩢Ѻթ⮱᭫㦄ࡴ倅㶕ᬻₐ⩢ᕔ倅ܳ ڤᰶ̭Ⴧ⮱॥ᩣ㘪߈́ڣ॥ᩣፓ̻ UCNPs ⮱ࣾᄱ
ၽ PEI ߌᣒȡ倅⮱ Zeta ⩢ѺթҬ UP ㆿၽ䬡⮱ 䅞ࣾ⩌䛺व喑PDA ⮱࠲㸦ᄩ㜡 UP ⮱ࣾᄱምᑧᏓ䒰
