Enhanced Peroxidase-Like Activity of MoS2 Quantum Dots Functionalized g-C3N4 Nanosheets towards Colorimetric Detection of H2O2 | |
Ju, Peng1,2; He, Yunhong3; Wang, Min4; Han, Xiuxun5; Jiang, Fenghua2; Sun, Chengjun2,6; Wu, Chi1 | |
刊名 | NANOMATERIALS |
2018-12 | |
卷号 | 8期号:12 |
关键词 | MoS2 g-C3N4 peroxidase-like colorimetric detection H2O2 |
ISSN号 | 2079-4991 |
DOI | 10.3390/nano8120976 |
英文摘要 | MoS2 quantum dots (QDs) functionalized g-C3N4 nanosheets (MoS2@CNNS) were prepared through a protonation-assisted ion exchange method, which were developed as a highly efficient biomimetic catalyst. Structural analysis revealed that uniformly-dispersed MoS2 QDs with controllable size and different loading amount grew in-situ on the surface of CNNS, forming close-contact MoS2@CNNS nanostructures and exhibiting distinct surface properties. Compared to MoS2 QDs and CNNS, the MoS2@CNNS nanocomposites exhibited a more than four times stronger peroxidase-like catalytic activity, which could catalyze the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of H2O2 to generate a blue oxide. Among the MoS2@CNNS nanocomposites, MoS2@CNNS(30) was verified to present the best intrinsic peroxidase-like performance, which could be attributed to the more negative potential and larger specific surface area. A simple, rapid and ultrasensitive system for colorimetric detection of H2O2 was thus successfully established based on MoS2@CNNS, displaying nice selectivity, reusability, and stability. The detection limit of H2O2 could reach as low as 0.02 mu M. Furthermore, the kinetic and active species trapping experiments indicated the peroxidase-like catalytic mechanism of MoS2@CNNS. This work develops a novel, rapid, and ultrasensitive approach for visual assay of H2O2, which has a potential application prospect on clinical diagnosis and biomedical analysis. |
资助项目 | Aoshan Scientific and Technological Innovation Project - Pilot National Laboratory for Marine Science and Technology (Qingdao)[2016ASKJ14] |
WOS研究方向 | Science & Technology - Other Topics ; Materials Science |
语种 | 英语 |
出版者 | MDPI |
WOS记录号 | WOS:000455323100014 |
内容类型 | 期刊论文 |
源URL | [http://ir.fio.com.cn:8080/handle/2SI8HI0U/10880] |
专题 | 业务部门_海洋生态研究中心 |
通讯作者 | Sun, Chengjun; Wu, Chi |
作者单位 | 1.Shandong Univ, Inst Marine Sci & Technol, 72 Binhai Rd, Qingdao 266237, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, Key Lab Marine Bioact Subst & Analyt Technol, Marine Ecol Ctr, 6 Xianxialing Rd, Qingdao 266061, Peoples R China 3.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, 238 Songling Rd, Qingdao 266100, Peoples R China 4.Liaocheng Univ, Shandong Prov Key Lab Chem Energy Storage & Novel, Liaocheng 252000, Peoples R China 5.Jiangxi Univ Sci & Technol, Inst Semicond Mat, 86 Hongqi Rd, Ganzhou 341000, Peoples R China 6.Pilot Natl Lab Marine Sci & Technol Qingdao, Lab Marine Drugs & Bioprod, 1 Wenhai Rd, Qingdao 266237, Peoples R China |
推荐引用方式 GB/T 7714 | Ju, Peng,He, Yunhong,Wang, Min,et al. Enhanced Peroxidase-Like Activity of MoS2 Quantum Dots Functionalized g-C3N4 Nanosheets towards Colorimetric Detection of H2O2[J]. NANOMATERIALS,2018,8(12). |
APA | Ju, Peng.,He, Yunhong.,Wang, Min.,Han, Xiuxun.,Jiang, Fenghua.,...&Wu, Chi.(2018).Enhanced Peroxidase-Like Activity of MoS2 Quantum Dots Functionalized g-C3N4 Nanosheets towards Colorimetric Detection of H2O2.NANOMATERIALS,8(12). |
MLA | Ju, Peng,et al."Enhanced Peroxidase-Like Activity of MoS2 Quantum Dots Functionalized g-C3N4 Nanosheets towards Colorimetric Detection of H2O2".NANOMATERIALS 8.12(2018). |
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