Abstract
A novel silver ion selective electrode with its ionophore being a kind of organic/inorganic composite composed of silver sulfide and attapulgite has been prepared. Attapulgite is a type of natural inorganic polymer which has some properties similar to zeolite, such as a higher specific surface area and plenty of intercrystalline cavities. In this work, the silver ions were firstly adosrbed in the micropores of the attapulgite, then thioacetamidetiny was selected to mix with the prepared silver ions/ attapulgite composite. Owning to the existence of sulfur atoms in the structure of thioacetamide molecules, thioacetamide molecules can react with the silver ions/attapulgite composite so that tiny silver sulfide particles were formed within the pores of attapulgite. Experimental results showed that the prepared silver ion selective electrode with the silver sulfide/attapulgite composite as the ionophore exhibited the better linear responses toward silver ion measured and the quick response time (about 3 s). And effects of the concentration of thioacetamide on starting material, depth of electrode membrane, amount of plastic agent, pH of measured solution on the silver electrode performance had been investigated in this work. Experimental results also proved that the silver electrode displayed a proximate Nernst response with a linear slope of 48 mV·decade-1 in the silver concentrations from 1.0×10-1 to 1.0×10-6 mol·L-1. Within the range of pH = 2.0 ~ 8.0, the potential of the silver electrode had a better stability in 72 h. Also, the silver electrode showed better anti-interference in the measured solution containing some common metal ions like Na+, Ca2+, Fe2+ and Cu2+ etc.
Graphical Abstract
Keywords
attapulgite, silver ion selective electrode, ionophore, silver sulfide, electrode stability
Publication Date
2014-06-28
Online Available Date
2013-11-30
Revised Date
2013-11-05
Received Date
2013-08-11
Recommended Citation
Wen-zhuo LI, Ding-jia XU, Jun WANG, Jian-long WANG.
A New Silver Electrode Based on the Composite Silver Sulfide/Attapulgite as Ionophore[J]. Journal of Electrochemistry,
2014
,
20(3): 277-281.
DOI: 10.13208/j.electrochem.130811
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol20/iss3/10
References
[1] Wang D W(王大伟), Huang X C(黄西潮), Liu Y Q(刘亚强). Study on the preparation of silver(I) ion selective electrode with the sol-gel technique[J]. Physical Testing and Chemical Analysis Part B Chemical Analysis(理化检验(化学分册)), 2002, 38(10): 519-524.
[2] Xue L J(薛连杰), Huang L(黄令), Ke F S(柯福生), et al. Preparation and electrochemical performance of three-dimensional porous SnCo alloy electrode[J]. Journal of Electrochemistry(电化学), 2010, 16(2): 161-167.
[3] Chen Y X, Lavacchi A, Chen S P, et al. Electrochemical milling and faceting: Size reduction and catalytic activation of palladium nanoparticles[J]. Angewandte Chemie International Edition, 2012, 51(34): 8500-8504.
[4] Zhang H(张焕), Qin L L(秦琳琳), Shi Y N(施一宁), et al. Electrochemical activities of oxygen-doped graphite surface for V(IV)/V(V) redox couple[J]. Journal of Electrochemistry(电化学), 2013, 19(2): 120-124.
[5] Zhang Q, Dong Q F, Zheng M S, et al. The preparation of a novel anion-exchange membrane and its application in all-vanadium redox batteries[J]. Journal of Membrane Science, 2012, 421-422: 232-237.
[6] Li M X(李明轩), Ou J L(欧洁连), Chen Y X(陈燕鑫), et al. Preparation and electrocatalytic properties of FeCo alloy cubic nanoparticles[J]. Journal of Electrochemistry(电化学), 2013, 19(2): 125-129.
[7] Xu G L, Li J T, Huang L, et al. Synthesis of Co3O4 nano-octahedra enclosed by {111}facets and their excellent lithium storage properties as anode material of lithium ion batteries[J]. Nano Energy, 2013, 2(3): 394-402.
[8] Li W Z, Li G F, Wang J L. Core-shell assembly of natural polymers for adjusting release performance of diclofenac[J]. International Journal of Polymeric Materials and Polymeric Biomaterials, 2013, 62(6): 358-361.
[9] Li W Z(李文卓), Huang F L(黄方伦), Wang J L(王健龙). A new calcium electrode based on the composite thio-acetamide/attapulgite as ionophore[J]. Acta Chimica Sinica(化学学报), 2012, 70(18): 1963-1968.
[10] Herron N J. Nanometer-sized semiconductor cluster: Materials synthesis, quantum size effects, and photo physical properties[J]. Journal of Chemistry Physics, 1991, 11: 3433-3435.
[11] Li W Z, Liu Z Y, Che Y L. Molecular simulation of adsorption and separation of mixtures of short linear alkanes in pillared layered materials at ambient temperature[J]. Journal of Colloid and Interface Science, 2007, 312(2): 179-185.
[12] He N Y(何乃彦), Cui W(崔薇), Guo W(郭威), et al. Synthesis of nano-material sulfide by biomacromolecule DNA[J]. Biotechnology Bulletin(生物技术通报), 2012, 3: 196-200.
[13] Hansen K M S, Willach S, Mosbak H, et al. Particles in swimming pool filters - Does pH determine the DBP formation[J]. Chemosphere, 2012, 87(3): 241-247.
[14] Jouyban A, Soltanpour S, Chan H K. A simple relationship between dielectric constant of mixed solvents with solvent composition and temperature[J]. International Journal of Pharmaceutics, 2004, 269(2): 353-360.
[15] Yan Z, Lu Y, Li X. Silver ion-selective electrodes based on bis(dialkyldithiocarbamates) as neutral ionophores[J]. Sensors and Actuators B, 2007, 122(1): 174-181.
[16] Nanda D, Oak M S, Kumar M P. Acrylic acid grafted PVC membrane based ion selective electrode for calcium and hardness measurement of water[J]. Indian Journal of Technology, 2007, 46(2): 258-262.
[17] Chen L, Ju H, Zeng X, et al. Silver ion-selective electrodes based on novel containing benzothiazolyl calix[4]arene[J]. Analytica Chimica Acta 2001, 437(2): 191-197.
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons
