Enhanced Peroxidase-Like Activity of MoS2 Quantum Dots Functionalized g-C3N4 Nanosheets towards Colorimetric Detection of H2O2

doi:10.3390/nano8120976

	Enhanced Peroxidase-Like Activity of MoS2 Quantum Dots Functionalized g-C3N4 Nanosheets towards Colorimetric Detection of H2O2
	Ju, Peng 1,2; He, Yunhong 3; Wang, Min 4; Han, Xiuxun 5; Jiang, Fenghua 2; Sun, Chengjun 2,6; Wu, Chi 1
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关键词	GRAPHITIC CARBON NITRIDE ; OPTICAL-DETECTION ; MIMETICS ; NANOPARTICLES ; ENZYME ; NANOCOMPOSITE ; NANOMATERIALS ; PERFORMANCE ; NANOZYMES ; CATALYSIS
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/25572]
专题	自然资源部第一海洋研究所
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).