| 第 46 卷第 5 期 |  | Vol. 46 No. 5 | | 2016 年 10 月 | Oct 2016 |
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所屬欄目：功能材料
鎳摻雜多孔石墨烯的制備、表征及對過(guò)氧化氫的電化學(xué)檢測 |
| 張文慧，王素敏*，王奇觀(guān)，邱申保，趙絨娜，尚嘉茵
（西安工業(yè)大學(xué) 材料與化工學(xué)院，陜西 西安 710032） |
| 摘 要：以氧化石墨烯為原料，采用氫氧化鉀氧化法制備了多孔石墨烯（PrGO）和鎳摻雜多孔石墨烯（Ni-PrGO）。惰性氣氛下通過(guò)高溫燒結將PrGO和Ni-PrGO中的氧化態(tài)碳進(jìn)行還原，同時(shí)經(jīng)過(guò)氫氧化鉀氧化，在PrGO和Ni-PrGO的石墨烯片層中形成孔徑為45~100 nm的孔洞。XRD譜圖表明，在Ni-PrGO中鎳以β-Ni（OH）2納米顆粒形式存在。分別以還原氧化石墨烯（rGO）／氧化銦錫（ITO）、PrGO／ITO和Ni-PrGO／ITO為工作電極，采用時(shí)間-電流曲線(xiàn)法檢測水溶液中的H2O2，3種工作電極對雙氧水的響應性強弱順序為：Ni-PrGO／ITO＞PrGO／ITO＞rGO／ITO；在2×10-5 mol／L到2×10-4 mol／L范圍內，Ni-PrGO／ITO可以有效測定水溶液中H2O2的濃度。研究結果表明，多孔結構有效地提高了PrGO的電化學(xué)催化性能，鎳摻雜可進(jìn)一步提高Ni-PrGO的電化學(xué)催化性能。 |
| 關(guān)鍵詞：多孔石墨烯；鎳摻雜；雙氧水檢測；電化學(xué) |
| 中圖分類(lèi)號：TQ127 文獻標識碼：A 文章編號：1009-9212（2016）05-0033-05 |
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| Preparation and Characterization of Nickel Doped Porous Graphene and Electrochemical Detection Toward H2O2 |
| ZHANG Wen-hui, WANG Su-min*, WANG Qi-guan, QIU Shen-bao, ZHAO Rong-na, SHANG Jia-yin
(School of Materials and Chemical Engineering, Xi’an Technological University，Xi’an 710032, China) |
| Abstract：Selecting the exfoliated graphene oxide(GO) as the starting materials, porous graphene(PrGO) and nickel doped porous graphene (Ni-PrGO) were prepared by chemical oxidation using KOH and air. It was showed that by thermal sintering in inert atmosphere the carbon in oxidation state in PrGO and Ni-PrGO was reduced, and pores with diameter of 45~100 nm were produced on the surface of PrGO and Ni-PrGO. In addition, the XRD spectra illustrated that the dopant nickel was presented as β-Ni(OH)2 nanoparticles in Ni-PrGO. The modified electrodes of thermal reduced graphene (rGO)/indium tin oxide (ITO), PrGO/ITO and Ni-PrGO were employed respectively as working electrodes to determine the H2O2 in water by time-current curve method. The response magnitude of H2O2 on the three functionalized electrodes was in the order of Ni-PrGO/ITO＞PrGO/ITO＞rGO/ITO. In the range from 2×10-5 mol/L to 2×10-4 mol/L, the concentration of H2O2 could be ascertained by Ni-PrGO/ITO electrode effectively. The results showed that the electrochemical performance of PrGO was improved because of pores presented on its surface. Moreover, electrochemical performance of the Ni-PrGO was further enhanced because of being doped by nickel. |
| Key words：porous graphene; nickel doping; hydrogen peroxide determination; electrochemistry |
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基金項目：國家自然科學(xué)基金（21103133），陜西省自然科學(xué)基金（2015JM5224），大學(xué)生創(chuàng )新創(chuàng )業(yè)訓練計劃（201510702030）。
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作者簡(jiǎn)介：張文慧（1993-），女，云南玉溪人，研究方向：納米碳導電高分子材料（E-mail：zhangwenhuiyn 1993@163.com）。
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聯(lián) 系 人：王素敏，副教授，研究方向：納米碳材料（E-mail：suminwang@163.com）。
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收稿日期： 2016-06-0
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