Unraveling the potential of Gd doping on mullite BiFeO for fiber optic ethanol gas detection at room temperature

Rao, Subha Krishna; Priya, A. Kalai; Kamath, S. Manjunath; Abhinav, E. Meher; Renganathan, B.; Jeyadheepan, K.; Gopalakrishnan, C.

doi:10.1016/j.matchemphys.2021.125646

Cited by 19 publications

(9 citation statements)

References 61 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The clad modified fiber optic gas sensing studies suggested that Gd doping improved ethanol gas sensing ability from 0 to 500 ppm at room temperature compared to host Bi 2 Fe 4 O 9 with high sensitivity, quick reaction and recovery period of around 38 s and 67 s, respectively. All of these findings highlight the Bi 2 Fe 4 O 9 with enhanced gas sensing capability suitable for industrial applications [26].…”

Section: Bi 2 Fe 4 Omentioning

confidence: 74%

See 1 more Smart Citation

Fiber Optic Sensors for Gas Detection: An Overview on Spin Frustrated Multiferroics

Rao¹,

Kumar²,

Gopalakrishnan³

2023

Metal-Oxide Gas Sensors

View full text Add to dashboard Cite

Real-time gas sensors, which use chemiresistive metal oxide (MO) semiconductors, have become more important in both research and industry. Fiber optic metal oxide (MO) semiconductor sensors have so increased the utility and demand for optical sensors in a variety of military, industrial, and social applications. Fiber optic sensors’ inherent benefits of lightweight, compact size, and low attenuation were actively leveraged to overcome their primary disadvantage of expensive cost. With the growing need for quicker, more precise, and simpler gas sensing, metal oxide semiconductor gas sensors are focusing on new and novel materials at room temperature. The realization that materials with coexisting magnetic and ferroelectric orders offer up effective ways to alter magnetism using electric fields has drawn scientists from diverse areas together to research multiferroics for gas sensing applications in recent years. The chapter shall encompass a brief summary of the underlying physics related to fiber optic gas sensors and parameters involved in gas sensing, the significance of the fascinating class of metal oxide materials, and an outline of spin frustrated multiferroics for possible applications and its potential possibilities for progress in the future.

show abstract

Section: Bi 2 Fe 4 Omentioning

confidence: 74%

“…A few commercially available sensors are Electrochemical (Amperometric) Sensors [12], Metal oxide semiconducting sensors [13][14][15], Nondispersive Infrared Sensors (NDIR) [16,17], Photoionization Sensor (PID) [18][19][20], Thermal Sensor (Pellistor) [21,22], Fiber optic sensors [23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Fiber Optic Sensors for Gas Detection: An Overview on Spin Frustrated Multiferroics

Rao¹,

Kumar²,

Gopalakrishnan³

2023

Metal-Oxide Gas Sensors

View full text Add to dashboard Cite

show abstract

“…In addition, the concentration of gas that is used also has an influence on the sensitivity value obtained. The sensitivity increases with increasing Gd doping and the concentration of acetone gas being used [19,30,31]. More detailed data is depicted in Table 1.…”

Section: Electrical Properties Characteristicmentioning

confidence: 99%

The Effect of Couple Doping Gd and Co on The Physical Characteristics of LaFeO3 Thick Film for Acetone Gas Sensor Application

Haryadi¹,

Syarif²,

Suhendi

2022

J. Penelit. Fis. Apl.

View full text Add to dashboard Cite

The acetone gas sensor is one type of sensor being researched for its application because it detects the presence of diabetes in sufferers. Gas sensors with high sensitivity and low operating temperature have been extensively investigated for this purpose, and this research is focused on the same purpose. Synthetization and characterization of LaFeO3 with co-doping Gd2O3 and CoO thick film ceramics for acetone gas sensor was conducted. LaFeO3 was made using the co-precipitation method with 2.5% CoO for each and 0%, 2.5%, and 5% Gd2O3 variation to the LaFeO3. The LaFeO3 thick film was prepared using the screen-printing technique and calcined at 800°C for two hours. The analysis of crystal structure characterization using X-Ray Diffraction (XRD) resulted in LaFeO3 with co-doping Gd2O3 and CoO thick film ceramics having the same cubic crystal phase with smaller lattice parameters and crystallite sizes after doping were added. The results of morphology structure characterization using Scanning Electron Microscopy (SEM) showed the grain size of the LaFeO3 with co-doping 2.5% CoO and 0%, 2.5%, and 5% Gd2O3 samples to support the analysis of electric property characterization later on. The electric property characterization showed that LaFeO3 with various Gd2O3 concentrations, as part of co-doping with 2.5% CoO, resulted in higher sensitivity compared to the lacking of Gd2O3 one. In order, the maximum sensitivity values of each Gd2O3 concentration are 2.74, 3.06, and 8.76 when exposed to 270 ppm acetone gas at 310°C. Gd2O3, as part of co-doping in LaFeO3 with CoO 2.5%, has successfully increased the sensitivity to the gas sensor yet still can not meet the expectation towards the operating temperature, which is still high compared to other references.

show abstract

“…For example, ethanol exists in laboratories, medical industries, and industrial production. When exposed to high concentrations of ethanol, humans are prone to adverse symptoms such as skin irritation and headache [4][5][6]. In order to prevent problems before they occur, it is essential to develop ethanol sensors to monitor ethanol concentration.…”

Section: Introductionmentioning

confidence: 99%

NiO-Based Gas Sensors for Ethanol Detection: Recent Progress

Zeng

2022

Journal of Sensors

View full text Add to dashboard Cite

In this review, we summarized the state-of-the-art progress on the ethanol performance of NiO by means of morphology, doping, loading noble metal particles, and forming heterojunctions. We first introduced the effect of modulating NiO morphology on ethanol performance that has been reported in recent years. The morphology with large specific surface area and high porosity was considered to be the one that can bring high gas response. Then, we discussed the enhanced effect of the doping of metal cations and noble metal particle loading on the ethanol-sensitive properties of NiO. Doping ions increased the ground-state resistance and increased the oxygen defect concentration of NiO. The effects of noble metal particles on the performance of NiO included chemical sensitization and electronic sensitization. Finally, the related contents of NiO forming complexes with metal oxides and bimetallic oxides were discussed. In this section, the specific improvement mechanism was discussed first, and then, the related work of researchers in recent years was summarized. At the same time, we presented a reasonable outlook for NiO-based ethanol sensors, imagining future directions.

show abstract

Unraveling the potential of Gd doping on mullite BiFeO for fiber optic ethanol gas detection at room temperature

Cited by 19 publications

References 61 publications

Fiber Optic Sensors for Gas Detection: An Overview on Spin Frustrated Multiferroics

Fiber Optic Sensors for Gas Detection: An Overview on Spin Frustrated Multiferroics

The Effect of Couple Doping Gd and Co on The Physical Characteristics of LaFeO3 Thick Film for Acetone Gas Sensor Application

NiO-Based Gas Sensors for Ethanol Detection: Recent Progress

Contact Info

Product

Resources

About