Page 216 - 《精细化工》2023年第4期

す 40 ࢤす 4 ᱌ ㇫ ㏳ ࡃ ጒ Vol.40, No.4
20 23 Ꭱ 4 ᰵ FINE CHEMICALS Apr. 2023

ᰶᱧ⩢ࡃ႓̻ጒ͇
2+
Ά䚥䨹ᩦᕔ⽨ภ⩌➖◚⩢ღࣷ⩢॥䭱 Cu ᕔ㘪

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1*
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⍖ 㤺 喑݅౐ߴ 喑⢸ ◜ 喑䱿᭒㔭 喑䮣㏏⁹ 喑λᄾ㥒
喍1. ⇠ࢄۉ͇๔႓ ᱧ⩢ጒ⼸႓䮏喑⇠ࢄ 䗾ጋ 450002喠2. ⇠ࢄ➔͇㏼≻႓䮏 㘪⎽̻ᮧ㘪ጒ⼸႓䮏喑⇠
ࢄ 䗾ጋ 450018喎
ᦅ㺮喟В⽨ภͧ࣌᫆ݣิ⩌➖◚喍⽨ภ◚喎喑ݖ⩕̺ह⊀Ꮣ⮱Ά䚥䨹ᄦ⽨ภ◚ᩦᕔ喑ݣᓄϔ➖ܳݘপऺͧ⽨ภ⩌
➖◚喍RHC喎হᩦᕔ⽨ภ⩌➖◚喍MRHC喎ȡ䕇䓴 SEMȠBETȠXRD ᄦݣิ⮱⩌➖◚⤳ࡃ➦ᕔ䔈㵹㶕ᒮȡᄳ RHC
হ MRHC ݣ᜽⩢Ხ喑≸䄂ڣ⩢ࡃ႓ᕔ㘪ȡ㐀᳉㶕ᬻ喑MRHC ႁ䯆㐀Ჱ͝ჹ喑℁㶕䲏⼜䒰๔喑́䨹В䷄ㆿ⟣⅔ࡃ
➖ᒏᐼႅౕλ⩌➖◚㶕䲏ȡ̻ RHC Ⱕ℁喑MRHC ⩢Ხ℁⩢ღ๔๔᣽倅喑⩢䭨᭫㦄ۼᄼ喑ᓗ⣜ᕔ㘪হԺ⢴ᕔ㘪
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౴ᰶ᣽ࡴȡMRHC-0.3喍Ά䚥䨹⊀Ꮣͧ 0.3 mol/L ᬣ⮱ MRHC喎℁㶕䲏⼜ͧ 495 m /g喑ႁღͧ 0.214 cm /g喑䄒⩢
2+
Ხౕ 2 A/g ̸ٲᩫ⩢ 2000 ⁎ऻ喑ڣ℁⩢ღԊᠮ⢴ͧ 92.16%ȡ⩢Ხౕ 0.9 VȠpH ͧ 5ȠCu ݊໸䉕䛼⊀Ꮣͧ 100 mg/L
2+
2+
᲎У̸喑MRHC-0.3 ᄦ Cu ⮱⩢॥䭱᩵᳉ᰭສ喑॥䭱䛼ͧ 9.57 mg/gȡౕ 0.9 VȠpH ͧ 5Ƞ200 mL Cu ݊໸䉕䛼
⊀Ꮣͧ 50 mg/L ⮱᲎У̸喑ࣨ䮑⢴ज䓫 63.82%ȡ
2+
ڠ䩛䃺喟⽨ภ喠ᩦᕔ⩌➖◚喠⩢ࡃ႓ᕔ㘪喠⩢॥䭱喠Cu 喠ᰶᱧ⩢ࡃ႓̻ጒ͇
͚ఫܳㆨत喟TK6; S216.2 ᪴⡛ᴴ䃳⴮喟A ᪴」㑃त喟1003-5214 (2023) 04-0902-09
2+
Capacitance and electroabsorption performance for Cu of
zinc acetate modified rice husk biochar

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WEN Ping , LIU Shengyong , WANG Jiong , QING Chunyao , TAO Hongge , YU Shaoying
喍1. College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, Henan, China;
2. School of Energy and Intelligence Engineering, Henan University of Animal Husbandry and Economy, Zhengzhou 450018,
Henan, China喎
Abstract: Biochar, prepared from rice husk and characterized by SEM, BET and XRD, was modified with
different concentrations of zinc acetate to synthesize products named RHC and MRHC, respectively. The
RHC and MRHC obtained were then applied into electrodes for electrochemical performance analysis. The
results showed that MRHC, with the zinc existed on the surface of the biochar in oxide form, exhibited rich
pore structure and large specific surface area. The MRHC electrode displayed significantly improved
specific capacitance, reduced resistance, and enhanced cycling and multiplicative performances compared
with RHC. MRHC-0.3 (MRHC obtained with a zinc acetate concentration of 0.3 mol/L), with a specific
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surface area of 495 m /g and a pore volume of 0.214 cm /g, after 2000 charge-discharge cycles at 2 A/g, the
capacitance retention rate was 92.16%. The MRHC-0.3 electrode showed the best electroadsorption effect,
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with an adsorption capacity of 9.57 mg/g on Cu at 0.9 V, pH 5 and Cu with an initial mass concentration
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of 100 mg/L(200 mL). The removal rate of Cu with an initial mass concentration of 50 mg/L could reach
63.82% at 0.9 V and pH 5.
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Key words: rice husk; modified biochar; electrochemical properties; electroabsorption; Cu ; electro-
organic chemistry and industry

⩢॥䭱ឭᱜ҉̭ͧ⻺倅᩵ѻ㕄⮱᫝ڡ↎Ⅱั⤳ឭ ⩢॥䭱ឭᱜϓ⼝⩢ღࣨ⻨ၽឭᱜ喍CDI喎喑⩢Ხ᭜ CDI
ᱜ喑፥⩕λ⊤Ⅱ⌎ࡃࣷⅡ䉱⎽↎ᴀั⤳ぶ䶳ഌ [1-3] ȡ ὎಄⮱䛺㺮㏱᜽䘕ܳ喑⩢Ხᕔ㘪хߐजⰡᣒ۠Ⴧ⩢

ᩣ⽬ᬒ᱌喟2022-07-21; Ⴧ⩕ᬒ᱌喟2022-10-18; DOI: 10.13550/j.jxhg.20220688
ധ䛾䶦Ⱋ喟⼥⻳倅᩵⌲∮ᡳ☔ឭᱜ̻㷲ิⵁ⾣喍201503015喎喠⇠ࢄⰮ䛺◦ⵁ̻ࣾᣕᎬ̀䶦喍222102320290喎
҉㔲キϸ喟⍖ 㤺喍1997ÿ喎喑ຠ喑ⶂธ⩌喑E-mail喟1598026283@qq.comȡ㖁㈨ϧ喟݅౐ߴ喍1964ÿ喎喑⩤喑᪆ᢵ喑E-mail喟liushy@vip.sina.comȡ