Page 213 - 《精细化工》2023年第4期

す 4 ᱌ Ვ⦸ۈ喑ぶ: ⻨ၽ㛉⩢㼐∂ݣิ⅜䛾䚥ࣷڣᱧ⤳ᣏ⾣ g899g

2.4 UV ٶ䅞̻ XRD ܳᲽ ㏬⊵๞喑ܧ⣝ᙌោᑔ喑䔆㶕ᬻ Au ⩢㼐䓴⼸͚ព᪐
–
ᄦ⩢㼐⩢Ѻͧ 1.25 VȠ⩢㼐⋟ pH ͧ 1.0ȠCl – ᣔݣ⮱ᒞ৺䮼Ɑ Cl ⊀Ꮣ⮱෋๔㔹ۼᑞ喑⩞⌤वᣔݣ
⊀Ꮣͧ 1.00 mol/LȠH 2 O 2 क़䛼ͧ 5 mmol ᲎У̸ݣᓄ ा⩢㢤䒙⼨ᣔݣ䓴⍎ȡ
ᵤ৮⏣⋟䔈㵹㉘ใܳᲽ喑㐀᳉ຯఫ 8 ᝭⹧ȡ⩞ఫ 8
–
जⴒ喑ᵤ৮ౕ 314 nm ัܧ⣝γ[AuCl 4 ] ॥ᩣም [17] 喑
–
䔆㶕ᬻᵤ৮⏣⋟͚क़ᰶ[AuCl 4 ] ȡͧγ䔈̭ₒܳᲽᵤ
৮᜽ܳ喑ᄳ᝭ᓄᵤ৮⏣⋟䔈㵹ั⤳ᓄݝధҀ喑ᄦ᝭
ᓄధҀ䔈㵹 X ᄱ㏬㵺ᄱܳᲽ喑㐀᳉ຯఫ 9 ᝭⹧ȡ⩞
ఫ 9 जⴒ喑ᵤ৮ౕ 2ș= 10.3°Ƞ16.8°Ƞ20.5°Ƞ23.1°Ƞ
30.9°Ƞ36.0°Ƞ41.5°Ƞ60.8°ัܧ⣝ᬻ᭫⮱㵺ᄱም喑
В̷㵺ᄱም̻᪴⡛្䖀⮱ HAuCl 4 •4H 2 O ⮱ XRD ➦
[8]
ᒮምധ᱙̭㜡 喑䄡ᬻ჋侹᝭ᓄϔ➖ͧఈⅡव⅜䛾
䚥喑ఫ 9 ̷⮱ᄾ䃥ᱯምज㘪᭜⩞λ⅜䛾䚥䘕ܳ⒛㼐
–
᝭㜡ȡ ఫ 10 Au ౕ̺ह Cl ⊀Ꮣ̸⮱ Nyquist ఫ
–
Fig. 10 Nyquist diagram of Au under different Cl concentrations

ᄦఫ 10 ⮱᪝ᢛҬ⩕ Zview 䒜У䔈㵹᠌व喑Ҭ⩕
⮱ぶ᩵⩢䌜ຯఫ 11 ᝭⹧ȡڣ͚喑R s ᭜⏣⋟⩢䭨喠R ct
᭜̻䛾⩢㼐Ⱕڠ⮱⩢㢤䒙⼨⩢䭨喠CPE ᭜⩕λ὎᠌
ࣹᅯ⩢ღ⮱ᕿჇⰥѺٰ㉍喠Z diff А㶕⩹䲏ព᪐䭨ោȡ
㶕 1 ͧఫ 11 ぶ᩵⩢䌜⮱᠌व࣯᪝ȡ⩞㶕 1 जⴒ喑䮼
–
–
Ɑ Cl ⊀Ꮣ⮱䔽⌽෋๔喑Cl 䔽⌽ःАγ Au ⩢Ხ㶕䲏
⮱Ⅱܳၽ॥䭱喑ᄩ㜡 R ct ۼᄼȠࣹ⩢ᅯ⩢ღ喍C dl 喎
ۼᄼȠ⩹䲏ព᪐䭨ោ喍W s 喎ۼᄼ喑䔈̭ₒ䄡ᬻγ Cl –

⊀Ꮣ⮱෋๔ᄦ Au ⮱⩢㼐䓴⼸ڤᰶӰ䔈҉⩕ȡ
ఫ 8 ჋侹ᵤ৮⮱㉘ใٶ䅞
Fig. 8 Ultraviolet spectrum of experimental sample

–
ఫ 11 ̺ह Cl ⊀Ꮣ⏣⋟͚ Au ⮱⩢ࡃ႓ぶ᩵⩢䌜
Fig. 11 Electrochemical equivalent circuit of Au in solutions
–
with different Cl concentration

–
㶕 1 Au ౕ̺ह Cl ⊀Ꮣ⏣⋟͚⮱⩢ࡃ႓ぶ᩵⩢䌜࣯᪝
Table 1 Electrochemical equivalent circuit parameters of
–
Au in solutions with different Cl concentrations
– 1/2
ఫ 9 ჋侹ᵤ৮⮱ XRD 䅞ఫ Cl /(mol/L) R s/ȍ R ct/ȍ C dl/ȝF W s/(mȍ/s )
Fig. 9 XRD pattern of experimental sample 0.10 7.707 122.70 101.83 177.30
0.25 10.790 68.42 75.18 48.65
2.5 ⩢ࡃ႓䭨ោ䅞ܳᲽ 0.50 8.676 34.97 66.62 –
⩢ࡃ႓䭨ោ䅞ͨ㺮᭜ͧγ䔈̭ₒܳᲽ Au ⩢Ხ 1.00 6.878 16.31 77.83 –
–
㶕䲏⮱䓴⼸ߕ߈႓ȡఫ 10 ᭜ Au ౕ̺ह Cl ⊀Ꮣ̸
–
⮱ Nyquist ఫ喑⩞ఫ 10 जⴒ喑ౕ Cl ⊀Ꮣͧ 0.10 হ ఫ 12 ᭜ Au ౕ̺ह H 2 O 2 क़䛼̸⮱ Nyquist ఫȡ
0.25 mol/L ⮱᲎У̸喑ᰟ㏬⩞倅䶾ࡧ⮱ღោᑔহѻ ⩞ఫ 12 जⴒ喑⇎ᰶߍڒ H 2 O 2 ᬣ喑ᰟ㏬⩞倅䶾ࡧ⮱
䶾ࡧ⮱̭᲎Ⱑ㏬Ჱ᜽喑䔆㶕ᬻ Au ⮱⩢㼐⩞倅䶾ࡧ ღោᑔহѻ䶾ࡧ⮱̭᲎Ⱑ㏬Ჱ᜽喑Au ⮱⩢㼐⩞⩢㢤
⮱⩢㢤䒙⼨হѻ䶾ࡧ⮱ព᪐⌤वᣔݣ [18-19] ȡ䮼Ɑ Cl – 䒙⼨̻ព᪐⌤वᣔݣȡH 2 O 2 ߍڒऻ喑ѻ䶾ࡧ⮱Ⱑ㏬
⊀Ꮣ⮱෋๔喑ღោᑔ⮱ࡷᒱ䔽⌽ۼᄼ喑⩢㢤䒙⼨⩢ ⊵๞喑Au ⮱⩢㼐⩞⌤वᣔݣ䒙अͧ⩢㢤䒙⼨ᣔݣ喑
–
䭨ۼᄼ喑ᒀ Cl ⊀Ꮣ䓫ݝ 0.50 mol/L ᬣ喑ѻ䶾ࡧ⮱Ⱑ 䮼Ɑ H 2 O 2 क़䛼⮱㐔㐚෋ߍ喑⩢㢤䒙⼨⩢䭨ॵ⣝ۼᄼ