Electrical properties and ethanol-sensing characteristics of perovskite La1−xPbxFeO3

Zhang, Ling; Hu, Jifan; Song, Peng; Qin, Hongwei; Jiang, Minhua

doi:10.1016/j.snb.2005.08.002

Cited by 51 publications

(23 citation statements)

References 16 publications

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“…Since the stability is excellent and the nearly 180° B−O−B atom chains inside the perovskite structure provides a 3D transport channel for photoexcited carriers, the perovskite oxides are classic photocatalytic materials with promising performance . LaFeO 3 (LFO) is one of the most common perovskite type oxides; catalytic activity is certified to be outstanding due to high stability, non‐toxicity, and appropriate band‐gap energy (about 2.07 eV) …”

Section: Introductionsupporting

confidence: 70%

Facile Preparation of n‐Type LaFeO₃ Perovskite Film for Efficient Photoelectrochemical Water Splitting

Nassar

et al. 2018

ChemistrySelect

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The attempt to enhance the hydrogen production via light‐driven water‐splitting systems relies mostly on the innovative technologies and photoactive materials. Recently, due to the superior properties such as low price, adaptability, and thermal stability, perovskite materials have attracted much scientific and application attention in the field of photocatalysis. In this study, the n‐type LaFeO3 perovskite is successfully fabricated by using simple sol‐gel method and the corresponding photoanode is formed by dip‐coating and calcinations. The prepared LaFeO3 is characterized using X‐ray diffraction, ultraviolet‐ visible spectrophotometer, energy dispersive X‐ray spectrum, scanning electron microscope, and Raman spectroscopy. The photocurrent density of the optimized LaFeO3 photoanode is up to 8.2 mAcm−2 at 1.7 V vs. Ag/AgCl. The factors affecting their photocatalytic performance including the calcination temperature, the species, concentration and the pH of the electrolyte are evaluated under simulated AM 1.5G solar illumination. Our prepared LaFeO3 may enable the low‐cost design of the durable photoelectrochemical cell for solar energy conversion.

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Section: Introductionsupporting

confidence: 70%

Facile Preparation of n‐Type LaFeO₃ Perovskite Film for Efficient Photoelectrochemical Water Splitting

Nassar

et al. 2018

ChemistrySelect

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“…10 Electrochemical impedance spectroscopy.-Electrochemical impedance spectroscopy (EIS) can give information about the surface and interface properties of the modified electrodes. The EIS measurements were carried out in a background solution of 1 mmol L −1 K 3 [Fe(CN) 6 ]/K 4 [Fe(CN) 6 ] in 1 mol L −1 KCl at 258 mV (formal potential of Fe(CN) 6 3− /Fe(CN) 6 4− redox couple) for the bare and modified electrode. Fig.…”

Section: Optimization Of the Perovskite Loading At Graphite Electrode-mentioning

confidence: 99%

The Electrochemistry and Determination of Some Neurotransmitters at SrPdO₃Modified Graphite Electrode

Atta

Ali

El-Ads

et al. 2013

J. Electrochem. Soc.

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Graphite/SrPdO 3 was utilized for the sensitive determination of some neurotransmitters, namely dopamine (DA), epinephrine (EP), norepinephrine (NE), serotonin (ST), 3,4-dihydroxyphenylacetic acid (DOPAC) and L-dopa. Graphite/SrPdO 3 exhibited higher electrocatalytic activity toward the studied neurotransmitters compared to bare graphite. It was confirmed that graphite electrode was more suitable substrate for immobilization of SrPdO 3 perovskite compared to other surfaces. Moreover, simultaneous determinations of L-dopa, ascorbic acid (AA) and uric acid (UA) or ST were achieved with large peak potential separation. The linear response for L-dopa was obtained in the range of 0.6 μmol L −1 to 9 μmol L −1 with correlation coefficient 0.996 and detection limit 1.63 nmol L −1 . The proposed composite sensor exhibited high reproducibility, enhanced sensitivity, selectivity, anti-interference ability, unique long-term stability (over two months) and applicability in the human urine samples with satisfying results.

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“…[33][34][35][36][37][38][39][40][41][42][43][44][45] In view of these advantages, some researchers have developed several CO 2 gas sensors based on perovskite-type oxides. [33][34][35][36][37][38][39][40][41][42][43][44][45] In view of these advantages, some researchers have developed several CO 2 gas sensors based on perovskite-type oxides.…”

Section: Introductionmentioning

confidence: 99%

High temperature CO₂sensing properties and mechanism of nanocrystalline LaCrO₃with rhombohedral structure: experiments and ab initio calculations

et al. 2015

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LaCrO 3 nanocrystalline powders with perovskite structure were prepared by sol-gel method with annealing at 700 C, 900 C for 4 h, respectively. At room temperature, LaCrO 3 nanocrystalline powders crystallizes as the orthorhombic structure. At high temperatures above the transition temperature from orthorhombic to rhombohedral, when exposed to CO 2 the optimum operating temperature for sensing is 360 C and the resistance of the rhombohedral LaCrO 3 sensor decreases, which is different from other p-type semiconductors. First principles calculations (GGA + U) were performed to investigate the possible CO 2 sensing mechanism for rhombohedral LaCrO 3 sensor. The calculation results show that when exposed to CO 2 , the C atom of CO 2 molecule chemically binds with the surface O atom of rhombohedral LaCrO 3 (012) surface, meanwhile the two O atoms of CO 2 molecule chemically bind with the adjacent surface Cr atoms on LaCrO 3 (012) surface. For this case, the CO 2 molecule captures electrons from the LaCrO 3 (012) surface, which is consistent with the experimental observation.

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Electrical properties and ethanol-sensing characteristics of perovskite La1−xPbxFeO3

Cited by 51 publications

References 16 publications

Facile Preparation of n‐Type LaFeO₃ Perovskite Film for Efficient Photoelectrochemical Water Splitting

Facile Preparation of n‐Type LaFeO₃ Perovskite Film for Efficient Photoelectrochemical Water Splitting

The Electrochemistry and Determination of Some Neurotransmitters at SrPdO₃Modified Graphite Electrode

High temperature CO₂sensing properties and mechanism of nanocrystalline LaCrO₃with rhombohedral structure: experiments and ab initio calculations

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Electrical properties and ethanol-sensing characteristics of perovskite La1−xPbxFeO3

Cited by 51 publications

References 16 publications

Facile Preparation of n‐Type LaFeO3 Perovskite Film for Efficient Photoelectrochemical Water Splitting

Facile Preparation of n‐Type LaFeO3 Perovskite Film for Efficient Photoelectrochemical Water Splitting

The Electrochemistry and Determination of Some Neurotransmitters at SrPdO3Modified Graphite Electrode

High temperature CO2sensing properties and mechanism of nanocrystalline LaCrO3with rhombohedral structure: experiments and ab initio calculations

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Product

Resources

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Facile Preparation of n‐Type LaFeO₃ Perovskite Film for Efficient Photoelectrochemical Water Splitting

Facile Preparation of n‐Type LaFeO₃ Perovskite Film for Efficient Photoelectrochemical Water Splitting

The Electrochemistry and Determination of Some Neurotransmitters at SrPdO₃Modified Graphite Electrode

High temperature CO₂sensing properties and mechanism of nanocrystalline LaCrO₃with rhombohedral structure: experiments and ab initio calculations