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Impact of pH on Regulating Ion Encapsulation of Graphene Oxide Nanoscroll for Pressure Sensing.
Nanomaterials (Basel). 2019 Apr 04; 9(4)N

Abstract

Recently, graphene oxide nanoscroll (GONS) has attracted much attention due to its excellent properties. Encapsulation of nanomaterials in GONS can greatly enhance its performance while ion encapsulation is still unexplored. Herein, various ions including hydronium ion (H₃O⁺), Fe3+, Au3+, and Zn2+ were encapsulated in GONSs by molecular combing acidic graphene oxide (GO) solution. No GONS was obtained when the pH of the GO solution was greater than 9. A few GONSs without encapsulated ion were obtained at the pH of 5-8. When the pH decreased from 5 to 0.15, high-density GONSs with encapsulated ions were formed and the average height of GONS was increased from ~50 to ~190 nm. These results could be attributed to the varied repulsion between carboxylic acid groups located at the edges of GO nanosheets. Encapsulated metal ions were converted to nanoparticles in GONS after high-temperature annealing. The resistance-type device based on reduced GONS (rGONS) mesh with encapsulated H₃O⁺ showed good response for applied pressure from 600 to 8700 Pa, which manifested much better performance compared with that of a device based on rGONS mesh without H₃O⁺.

Authors+Show Affiliations

Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China. iamwhzhao@njtech.edu.cn.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China. iamwanglin@njtech.edu.cn.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China. wojiaopcj@njtech.edu.cn.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China. iamcwei@njtech.edu.cn.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China. 201861122142@njtech.edu.cn.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China. iamjdzhang@njtech.edu.cn.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, China. iamhli@njtech.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30987290

Citation

Zhao, Weihao, et al. "Impact of pH On Regulating Ion Encapsulation of Graphene Oxide Nanoscroll for Pressure Sensing." Nanomaterials (Basel, Switzerland), vol. 9, no. 4, 2019.
Zhao W, Wang L, Pei C, et al. Impact of pH on Regulating Ion Encapsulation of Graphene Oxide Nanoscroll for Pressure Sensing. Nanomaterials (Basel). 2019;9(4).
Zhao, W., Wang, L., Pei, C., Wei, C., You, H., Zhang, J., & Li, H. (2019). Impact of pH on Regulating Ion Encapsulation of Graphene Oxide Nanoscroll for Pressure Sensing. Nanomaterials (Basel, Switzerland), 9(4). https://doi.org/10.3390/nano9040548
Zhao W, et al. Impact of pH On Regulating Ion Encapsulation of Graphene Oxide Nanoscroll for Pressure Sensing. Nanomaterials (Basel). 2019 Apr 4;9(4) PubMed PMID: 30987290.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Impact of pH on Regulating Ion Encapsulation of Graphene Oxide Nanoscroll for Pressure Sensing. AU - Zhao,Weihao, AU - Wang,Lin, AU - Pei,Chengjie, AU - Wei,Cong, AU - You,Hui, AU - Zhang,Jindong, AU - Li,Hai, Y1 - 2019/04/04/ PY - 2019/03/02/received PY - 2019/03/21/revised PY - 2019/03/23/accepted PY - 2019/4/17/entrez PY - 2019/4/17/pubmed PY - 2019/4/17/medline KW - graphene oxide nanoscroll KW - ion encapsulation KW - mesh structure KW - pH value KW - pressure sensing JF - Nanomaterials (Basel, Switzerland) JO - Nanomaterials (Basel) VL - 9 IS - 4 N2 - Recently, graphene oxide nanoscroll (GONS) has attracted much attention due to its excellent properties. Encapsulation of nanomaterials in GONS can greatly enhance its performance while ion encapsulation is still unexplored. Herein, various ions including hydronium ion (H₃O⁺), Fe3+, Au3+, and Zn2+ were encapsulated in GONSs by molecular combing acidic graphene oxide (GO) solution. No GONS was obtained when the pH of the GO solution was greater than 9. A few GONSs without encapsulated ion were obtained at the pH of 5-8. When the pH decreased from 5 to 0.15, high-density GONSs with encapsulated ions were formed and the average height of GONS was increased from ~50 to ~190 nm. These results could be attributed to the varied repulsion between carboxylic acid groups located at the edges of GO nanosheets. Encapsulated metal ions were converted to nanoparticles in GONS after high-temperature annealing. The resistance-type device based on reduced GONS (rGONS) mesh with encapsulated H₃O⁺ showed good response for applied pressure from 600 to 8700 Pa, which manifested much better performance compared with that of a device based on rGONS mesh without H₃O⁺. SN - 2079-4991 UR - https://www.unboundmedicine.com/medline/citation/30987290/Impact_of_pH_on_Regulating_Ion_Encapsulation_of_Graphene_Oxide_Nanoscroll_for_Pressure_Sensing L2 - https://www.mdpi.com/resolver?pii=nano9040548 DB - PRIME DP - Unbound Medicine ER -
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