|
1
|
Tang Y, Zhang M, Nawaz SA, Tian X, Wang H, Wang J. TiO 2hierarchical nano blooming-flower decorated by Pt for formaldehyde detection. NANOTECHNOLOGY 2021; 32:365601. [PMID: 34038880 DOI: 10.1088/1361-6528/ac056c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Accepted: 05/26/2021] [Indexed: 06/12/2023]
Abstract
To achieve an ultra-low concentration formaldehyde detection at low temperature, a platinum (Pt) assisted TiO2hierarchical nano blooming-flower sphere material is synthesized through hydrothermal method. SEM and transmission electron microscope characterizations show that the diameter of the nano sphere was around 2μm with dissilient rods of 60 nm in diameter and 1μm in length on the surface. The response (Ra/Rg) achieved form this nanomaterial to HCHO is 1.08 (100 ppb) and 5.82 (5 ppm) at 130 °C without an involvement of any light source or solution. The relationship curve between the responses and concentrations shows regular exponential trend. The verification of sensor stability done by a 3 month reliability test shows no response-degradation. The optimal response and stability is attributed to the massive dissilient rods on the surface of TiO2spheres and the assistance of Pt as a catalyzer disperses to intensify the formation of depletion area on the surface of TiO2. This study provide an attractive and cost effective solution for the detection of HCHO in air at a relatively low temperature.
Collapse
Affiliation(s)
- Yankun Tang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| | - Ming Zhang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| | - Sher Ali Nawaz
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| | - Xianqing Tian
- China Academy of Engineering Physics, Institute of Chemical Materials, 64 Mianshan Road, Mianyang, Sichuan, 621900, People's Republic of China
| | - Hairong Wang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
- State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| | - Jiuhong Wang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, People's Republic of China
| |
Collapse
|
|
2
|
Xi H, Chen X, Cao Y, Xu J, Ye C, Deng D, Zhang J, Huang G. Electrochemical determination of formaldehyde via reduced AuNPs@PPy composites modified electrode. Microchem J 2020. [DOI: 10.1016/j.microc.2020.104846] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
|
3
|
Pinto GF, Rocha DP, Richter EM, Muñoz RAA, Silva SG. Indirect determination of formaldehyde by square-wave voltammetry based on the electrochemical oxidation of 3,5–diacetyl–1,4–dihydrolutidine using an unmodified glassy-carbon electrode. Talanta 2019; 198:237-241. [PMID: 30876556 DOI: 10.1016/j.talanta.2019.01.108] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Revised: 01/28/2019] [Accepted: 01/30/2019] [Indexed: 11/17/2022]
Affiliation(s)
- Gabriel F Pinto
- Federal University of Uberlândia, Institute of Chemistry, 38400-902 Uberlândia, MG, Brazil
| | - Diego P Rocha
- Federal University of Uberlândia, Institute of Chemistry, 38400-902 Uberlândia, MG, Brazil
| | - Eduardo M Richter
- Federal University of Uberlândia, Institute of Chemistry, 38400-902 Uberlândia, MG, Brazil
| | - Rodrigo A A Muñoz
- Federal University of Uberlândia, Institute of Chemistry, 38400-902 Uberlândia, MG, Brazil
| | - Sidnei G Silva
- Federal University of Uberlândia, Institute of Chemistry, 38400-902 Uberlândia, MG, Brazil.
| |
Collapse
|