Perovskite-type calcium titanate nanoparticles as novel matrix for designing sensitive electrochemical biosensing

Wang, Lei; Li, Juan; Feng, Mingyang; Min, Lingfeng; Yang, Juan; Yu, Suhua; Zhang, Yongcai; Hu, Xiaoyun; Yang, Zhanjun

doi:10.1016/j.bios.2017.05.004

Cited by 50 publications

(17 citation statements)

References 53 publications

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“…In nature, glucose can be oxidized into gluconolactone by losing hydrogen in the presence of glucose oxidase (GOx) enzyme 7 , and this reaction is seen across various organisms 8,9 . Utilizing an external electric field, perovskite oxide nano-particles have been used for glucose detection 10,11 . An important strategy to understand such biological and bio-chemical reactions involves measurement of the hydrogen transfer processes.…”

Section: Introductionmentioning

confidence: 99%

Perovskite nickelates as bio-electronic interfaces

Zhang

Zuo

et al. 2019

Nat Commun

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Functional interfaces between electronics and biological matter are essential to diverse fields including health sciences and bio-engineering. Here, we report the discovery of spontaneous (no external energy input) hydrogen transfer from biological glucose reactions into SmNiO 3 , an archetypal perovskite quantum material. The enzymatic oxidation of glucose is monitored down to ~5 × 10 −16 M concentration via hydrogen transfer to the nickelate lattice. The hydrogen atoms donate electrons to the Ni d orbital and induce electron localization through strong electron correlations. By enzyme specific modification, spontaneous transfer of hydrogen from the neurotransmitter dopamine can be monitored in physiological media. We then directly interface an acute mouse brain slice onto the nickelate devices and demonstrate measurement of neurotransmitter release upon electrical stimulation of the striatum region. These results open up avenues for use of emergent physics present in quantum materials in trace detection and conveyance of bio-matter, bio-chemical sciences, and brain-machine interfaces.

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Section: Introductionmentioning

confidence: 99%

Perovskite nickelates as bio-electronic interfaces

Zhang

Zuo

et al. 2019

Nat Commun

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“…It was synthesized by the extended heating of titanium dioxide (TiO 2 ) with one of the calcium compounds powders: calcium oxide (CaO), calcium carbonate (CaCO 3 ), calcium nitrate hydrate (Ca(NO 3 ) 2 .4H 2 O), or calcium chloride dehydrate (CaCl 2 .H 2 O) at a high temperature. [4][5][6][7][8][9][10]. Mechano-chemical synthesis of CaTiO 3 has been carried out with various mixtures of CaCO 3 , calcium hydroxide (Ca(OH) 2 ), CaO and TiO 2 under an extended period of mechanical activation [5,[11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Calcium titanate ceramics obtained by combustion synthesis and two-step sintering

Maitreekeaw

Chanadee

2020

SCI SINTER

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Calcium titanate powder was successfully prepared from duck eggshell and anatase titanium dioxide with a magnesium inductant via combustion synthesis in argon. As-combusted products were leached with diluted HCl. In XRD analysis, as-leached powders exhibited a major phase of CaTiO3 with a perovskite structure. The particle size, observed by SEM, was approximately 240 nm. As-leached powders were densified by single-step (SST) and two-step sintering (TSS) to produce calcium titanate ceramics. The first step of all TSS conditions was fixed at 1350C and holding times (t1) at this temperature were varied up to 120 min. Calcium titanate ceramic obtained from holding for 120 min had a grain size of 2.18 ?m, relative density of 86.68% and a dielectric constant of 92. Two-step sintered ceramic had the highest density (95.73%) and best dielectric properties (dielectric constant = 110, dielectric loss = 0.02) when the holding temperature (T2) was 1250?C. Calcium titanate ceramics processed by two-step sintering had denser microstructures and higher dielectric constants than single-step sintered ceramic due to grain boundary diffusion and the simplicity of relaxation polarization.

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“…Perovskite materials, owing to their high stability, good electrical response, and bandgap energy capability to be tailored, have been developed for utilization in photocatalytic applications as in wastewater treatment, which involved antibiomicrobial action and water splitting [8][9][10]. Other known usages of perovskite materials include the production of solar cells and gas sensing as well as biosensing devices [11,12]. Since nonenzymatic sensors used in food chemical or human fluid detection are generally produced from semiconductor materials with bandgap energy values ranging from 2.3 to 3.4 eV, considering perovskite's bandgap energy characteristics, the materials have great potential for electrochemical sensors [13,14].…”

Section: Introductionmentioning

confidence: 99%

Electrocatalytic Properties of Calcium Titanate, Strontium Titanate, and Strontium Calcium Titanate Powders Synthesized by Solution Combustion Technique

Jongprateep

Sato

Techapiesancharoenkij

et al. 2019

Advances in Materials Science and Engineering

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Calcium titanate (CaTiO3), strontium titanate (SrTiO3), and strontium calcium titanate (SrxCa1−xTiO3) are widely recognized and utilized as dielectric materials. Their electrocatalytic properties, however, have not been extensively examined. The aim of this research is to explore the electrocatalytic performance of calcium titanate, strontium titanate, and strontium calcium titanate, as potential sensing materials. Experimental results revealed that CaTiO3, SrTiO3, and Sr0.5Ca0.5TiO3 powders synthesized by the solution combustion technique consisted of submicrometer-sized particles with specific surface areas ranging from 4.19 to 5.98 m2/g. Optical bandgap results indicated that while CaTiO3 and SrTiO3 had bandgap energies close to 3 eV, Sr0.5Ca0.5TiO3 yielded a lower bandgap energy of 2.6 eV. Cyclic voltammetry tests, measured in 0.1 M sodium nitrite, showed oxidation peaks occurring at 0.58 V applied voltage. The highest peak current was observed in Sr0.5Ca0.5TiO3 powder. The superior electrocatalytic performance of Sr0.5Ca0.5TiO3 might be attributed to lower bandgap energy, which consequently facilitates higher electron transfer. Electrocatalytic performance of Sr0.5Ca0.5TiO3 was subsequently reexamined in a wider concentration range of sodium nitrite. The results revealed that the material responded linearly to nitrite solution in the range of 0.1 mM to 0.1 M and exhibited sensitivity ranging from 3.117 to 0.040 μA/mM, in the entire tested nitrite concentrations. The results suggest that Sr0.5Ca0.5TiO3 could also be used for nitrite detection.

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Perovskite-type calcium titanate nanoparticles as novel matrix for designing sensitive electrochemical biosensing

Cited by 50 publications

References 53 publications

Perovskite nickelates as bio-electronic interfaces

Perovskite nickelates as bio-electronic interfaces

Calcium titanate ceramics obtained by combustion synthesis and two-step sintering

Electrocatalytic Properties of Calcium Titanate, Strontium Titanate, and Strontium Calcium Titanate Powders Synthesized by Solution Combustion Technique

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