Carbon monoxide sensing at room temperature via electron donation in boron doped diamond films

Joshi, Rakesh; Weber, Jessica; Hu, Qiang; Johnson, Bob; Zimmer, J.; Kumar, Ashok

doi:10.1016/j.snb.2009.12.070

Cited by 18 publications

(12 citation statements)

References 25 publications

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“…However, this effect can be ruled out on CVD‐derived graphene studied herein. The gas‐sensing response of CVD graphene is similar to that of CNTs37, 38 and diamond surfaces 39. At room temperature, no resistance change of our CVD‐derived graphene was observed, if it is exposed to CO (Figure 7 a).…”

Section: Resultsmentioning

confidence: 60%

Activating Water: Important Effects of Non‐leaving Groups on the Hydrolysis of Phosphate Triesters

Kirby

Medeiros

Oliveira

et al. 2011

Chemistry A European J

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The high rate of spontaneous hydrolysis of tris-2-pyridyl phosphate (TPP) is explained by the activating effects of the non-leaving ("spectator") groups on P-OAr cleavage, and not by intramolecular catalysis. Previous work on phosphate-transfer reactions has concentrated on the contributions to reactivity of the nucleophile and the leaving group, but our results make clear that the effects of the non-leaving groups on phosphorus can be equally significant. Rate measurements for three series of phosphate triesters showed that sensitivities to the non-leaving groups are substantial for spontaneous hydrolysis reactions, although significantly smaller for reactions with good nucleophiles. There are clear differences between triaryl and dialkyl aryl triesters in sensitivities to leaving and non-leaving groups with the more reactive triaryl systems showing lower values for both β(LG) and β(NLG). Intramolecular catalysis of the hydrolysis of TPP by the neighbouring pyridine nitrogens is insignificant, primarily because of their low basicity.

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Section: Resultsmentioning

confidence: 60%

Activating Water: Important Effects of Non‐leaving Groups on the Hydrolysis of Phosphate Triesters

Kirby

Medeiros

Oliveira

et al. 2011

Chemistry A European J

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“…We had chosen B-doped silicon dioxide surface58 having free hydroxyl groups which can be covalently modified by silane chemistry easily. Also during the thermal growth of silicon dioxide and followed by chemical modification of SiO 2 layer, we have chosen <111> surface of silicon due to its surface atomic arrangement which leads to densely packed layers and low density of dangling bonds59.…”

Section: Methodsmentioning

confidence: 99%

A novel bio-engineering approach to generate an eminent surface-functionalized template for selective detection of female sex pheromone of Helicoverpa armigera

Moitra

Bhagat

Pratap

et al. 2016

Sci Rep

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Plant pests exert serious effects on food production due to which the global crop yields are reduced by ~20–40 percent per year. Hence to meet the world’s food needs, loses of food due to crop pests must be reduced. Herein the silicon dioxide based MEMS devices are covalently functionalized for robust and efficient optical sensing of the female sex pheromones of the pests like Helicoverpa armigera for the first time in literature. The functionalized devices are also capable of selectively measuring the concentration of this pheromone at femtogram level which is much below the concentration of pheromone at the time of pest infestation in an agricultural field. Experiments are also performed in a confined region in the presence of male and female pests and tomato plants which directly mimics the real environmental conditions. Again the reversible use and absolutely trouble free transportation of these pheromone nanosensors heightens their potentials for commercial use. Overall, a novel and unique approach for the selective and reversible sensing of female sex pheromones of certain hazardous pests is reported herein which may be efficiently and economically carried forward from the research laboratory to the agricultural field.

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“…For instance, Gurbuz and coworkers demonstrated the performance of catalyst/adsorptive-oxide/ insulator/semiconductor (CAIS) devices based on doped diamond/intrinsic diamond/metal catalyst for the detection of hydrogen, oxygen, carbon monoxide ( Figure 18.2) or various hydrocarbons. 11 The influence of gases used in the semiconductor industry at temperatures typically above Z100 1C, 12,13 as well as that of CO gas at room temperature, 14 on the resistivity of doped diamond layers was also investigated.…”

Section: Physical Propertiesmentioning

confidence: 99%

Diamond-based Resonators for Chemical Detection

Scorsone

Trouvé

2014

Nanodiamond

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Chemical/biochemical sensors are devices that transform chemical or biological information into an analytically useful signal. Generally speaking, they are the result of coupling a selective layer to a physical part known as the transducer. The sensors may be classified according to the operating principle of the transducer. In brief, the main transduction phenomena are optical, electrochemical, electrical and gravimetric. 1 A wide variety of innovative chemical and biochemical sensor technologies are being reported in the literature every year, often showing highly promising performances. However, when it comes to commercial sensors, one has to admit that the market is very conservative. A possible explanation for this is the lack of robustness and reliability of the newly developed sensors and, therefore, their difficulty to maintain performance specifications under adverse operating conditions. 2 The robustness of the sensors is linked, on the one hand, to their ability to withstand mechanical shocks, stresses, or vibrations. On the other hand, it is related the chemical stability of the selective layer in the operating environment. The variety of exceptional physicochemical properties of diamond materials are generally extremely resilient to chemical degradation. They also feature outstanding mechanical properties, such as a high Young's RSC Nanoscience & Nanotechnology No.

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Carbon monoxide sensing at room temperature via electron donation in boron doped diamond films

Cited by 18 publications

References 25 publications

Activating Water: Important Effects of Non‐leaving Groups on the Hydrolysis of Phosphate Triesters

Activating Water: Important Effects of Non‐leaving Groups on the Hydrolysis of Phosphate Triesters

A novel bio-engineering approach to generate an eminent surface-functionalized template for selective detection of female sex pheromone of Helicoverpa armigera

Diamond-based Resonators for Chemical Detection

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