Enhanced acetone-sensing properties to ppb detection level using Au/Pd-doped ZnO nanorod

Huang, Jinyu; Zhou, Jiaxi; Liu, Zhenhua; Li, Xuejin; Geng, Yanquan; Tian, Xiaoqing; Du, Yu; Qian, Zhengfang

doi:10.1016/j.snb.2019.127129

Cited by 57 publications

(38 citation statements)

References 31 publications

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“…Evidence for currently available commercial ketone breathalyzers is lacking. Many studies have assessed the utility of novel sensors in the ketogenic diet [ 25 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , 66 , 67 , 68 ], but very few have evaluated currently available devices. The BIOSENSE™ device is a breathalyzer with published clinical trial data detailing its efficacy.…”

Section: Current Technologymentioning

confidence: 99%

“…Graphene quantum dots (GQD) are nanostructures with use in many different applications including gas sensing. Liu et al [ 54 ] have developed a GQD-functionalized three-dimensional ordered mesoporous (3DOM) ZnO sensor for acetone detection. The goal was to improve upon basic ZnO sensors and demonstrate a manufacturing process for assembling the sensor.…”

Section: Future Technologiesmentioning

confidence: 99%

“…This weight loss was attributed to the decomposition of water present in the samples by the authors. The authors described that this sensor has potential utility as a diabetic diagnostic tool to detect high ketones in the breath, but the same concept can be applied to a ketogenic diet [ 54 ].…”

Section: Future Technologiesmentioning

confidence: 99%

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The Ketogenic Diet: Breath Acetone Sensing Technology

Alkedeh

Priefer

2021

Biosensors

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The ketogenic diet, while originally thought to treat epilepsy in children, is now used for weight loss due to increasing evidence indicating that fat is burned more rapidly when there is a low carbohydrate intake. This low carbohydrate intake can lead to elevated ketone levels in the blood and breath. Breath and blood ketones can be measured to gauge the level of ketosis and allow for adjustment of the diet to meet the user’s needs. Blood ketone levels have been historically used, but now breath acetone sensors are becoming more common due to less invasiveness and convenience. New technologies are being researched in the area of acetone sensors to capitalize on the rising popularity of the diet. Current breath acetone sensors come in the form of handheld breathalyzer devices. Technologies in development mostly consist of semiconductor metal oxides in different physio-chemical formations. These current devices and future technologies are investigated here with regard to utility and efficacy. Technologies currently in development do not have extensive testing of the selectivity of the sensors including the many compounds present in human breath. While some sensors have undergone human testing, the sample sizes are very small, and the testing was not extensive. Data regarding current devices is lacking and more research needs to be done to effectively evaluate current devices if they are to have a place as medical devices. Future technologies are very promising but are still in early development stages.

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Section: Current Technologymentioning

confidence: 99%

Section: Future Technologiesmentioning

confidence: 99%

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The Ketogenic Diet: Breath Acetone Sensing Technology

Alkedeh

Priefer

2021

Biosensors

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“…Discrimination of acetone was also demonstrated by hydrothermally/chemically synthesized nanorods (NRds) and nanoneedles at certain operating temperatures with good response/recovery time, as seen in Table 1 [ 73 , 74 , 75 , 76 , 77 ]. Among these nanorods (Cr doped ZnO NRds, SnS 2 NRds, Au/Pd-doped ZnO NRds, and α-Fe 2 O 3 /NiO NRds), the α-Fe 2 O 3 NPs-doped NiO NRds [ 76 ] displayed a high response of 290 for 100 ppm acetone at 280 °C with a LOD of approximately 5 ppm.…”

Section: Diverse Nanostructures In Acetone Detectionmentioning

confidence: 99%

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Shellaiah

Sun

2021

Sensors

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Environmental pollution related to volatile organic compounds (VOCs) has become a global issue which attracts intensive work towards their controlling and monitoring. To this direction various regulations and research towards VOCs detection have been laid down and conducted by many countries. Distinct devices are proposed to monitor the VOCs pollution. Among them, chemiresistor devices comprised of inorganic-semiconducting materials with diverse nanostructures are most attractive because they are cost-effective and eco-friendly. These diverse nanostructured materials-based devices are usually made up of nanoparticles, nanowires/rods, nanocrystals, nanotubes, nanocages, nanocubes, nanocomposites, etc. They can be employed in monitoring the VOCs present in the reliable sources. This review outlines the device-based VOC detection using diverse semiconducting-nanostructured materials and covers more than 340 references that have been published since 2016.

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“…Lai [23] used the electrospinning process to develop combined nanostructures of ZnO and SnO 2 along with Au doping, proving the improved gas sensing response of ethanol. Huang [24] developed the ZnO sensor with 2 metal dopants like Au and Pd, which can detect the ppb levels of acetone gas with enhanced sensitivity. It is clear that the noble metal dopants can enhance the sensing properties of semiconductors with different preparation methods.…”

Section: Introductionmentioning

confidence: 99%

Au Doping ZnO Nanosheets Sensing Properties of Ethanol Gas Prepared on MEMS Device

Nagarjuna

Hsiao

2020

Coatings

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Sensitivity of the Micro Electro Mechanical System (MEMS) device ZnO nanosheets sensor and the Au doped ZnO nanosheets sensor has been investigated. The ZnO samples have been prepared using Hydrothermal synthesis at 90 °C. The prepared ZnO nanostructure is tested for structural morphology and crystallinity properties. The elemental analysis of the ZnO sample and Au–ZnO samples are tested by using Energy Dispersive X-ray Spectroscopy (EDS) spectrum analysis. MEMS device microheater is designed and prepared for testing the sensitivity of Ethanol gas. Thermal properties of the MEMS microheater is studied for better gas testing at different temperatures. Both the ZnO nanosheets sensor and Au doped ZnO nanosheets sensor are tested using Ethanol gas, and the gas concentrations are taken to be 15, 30, 45, and 60 ppm at 300 °C. The gas sensing response of pure ZnO nanosheets tested for ethanol gas at 60 ppm showed 20%, while the Au–ZnO nanosheets showed 35%, which is increased by 15% at similar operating conditions.

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Enhanced acetone-sensing properties to ppb detection level using Au/Pd-doped ZnO nanorod

Cited by 57 publications

References 31 publications

The Ketogenic Diet: Breath Acetone Sensing Technology

The Ketogenic Diet: Breath Acetone Sensing Technology

Inorganic-Diverse Nanostructured Materials for Volatile Organic Compound Sensing

Au Doping ZnO Nanosheets Sensing Properties of Ethanol Gas Prepared on MEMS Device

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