Sensing device and method for real-time monitoring of photocatalyst catalytic process

A catalytic process and photocatalyst technology, which is applied in the field of biomedical optical sensing technology design, can solve the problem of not being able to reflect the local photocatalytic process in real time and in situ, there are few studies on photocatalytic performance evaluation methods, and the theoretical research on catalytic mechanism is lagging behind. and other problems, to achieve the effect of extremely high material consumption, low material consumption and small volume

Active Publication Date: 2021-09-07
JINAN UNIVERSITY
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  • Application Information

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Problems solved by technology

However, as far as we know, the understanding of the catalytic mechanism and related theoretical studies are still relatively lagging behind
In addition to UV-vis absorption spectroscopy, there are few studies on the photocatalytic process and photocatalytic performance evaluation methods of photocatalysts.
However, absorption spectroscopy requires a large amount of samples and cannot reflect the local photocatalytic process in real time and in situ.

Method used

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  • Sensing device and method for real-time monitoring of photocatalyst catalytic process
  • Sensing device and method for real-time monitoring of photocatalyst catalytic process
  • Sensing device and method for real-time monitoring of photocatalyst catalytic process

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Embodiment 1

[0035] Fiber-sensitive technology is based on the advantages of light wave as information carrier, with optical wave as information carrier, high cost, high sensitivity, high-speed monitoring, corrosion resistance, strong biological compatibility, etc., has become the most rapid development in recent years. One of the biological sensing techniques. In the relevant reports of fiber optic sensing research, high-performance fiber interferometers have become a research hotspot. The most representative is the micro-radio fiber interferometer sensor that has been developed in recent years. In addition to the characteristics of conventional fiber sensors, such fiber optic sensors can also use their excitation to the surrounding environment, not only It greatly enriches its detection objects and improves measurement accuracy. It has a very broad application prospect in the field of biochemical material detection.

[0036] like figure 1 As shown, the present embodiment provides a sensing d...

Embodiment 2

[0040] like figure 1 , The present embodiment provides a method for real-time monitoring sensing a photocatalyst catalytic process, the method comprising: a photosensitive optical fiber in the flame is drawn into a tapered micro-nano fiber, the micro-nano tapered single-mode optical fiber 1 and fiber splicing, made into a fiber optic sensing probe; nanoparticle catalyst layer is fixed micro-nano tapered surface of the fiber to assemble a single-layer film; fiber sensing probe to the fixed catalyst layer 2 was immersed in the nanoparticle-containing organic molecules solution of 3, 5 and the light input to the micro-nano tapered optical fiber 1, 1 by the tapered surface of the fiber micro-nano evanescent sensitive to environmental changes characteristic, the interface of the photocatalytic process the organic layer 4 is monitored specifically includes the following steps:

[0041] Sl, the flame on the photosensitive optical fiber having a diameter of 3.46 microns pull-tapered micro...

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Abstract

The invention discloses a sensing device and method for real-time monitoring of photocatalyst catalytic process. The device includes a tapered micro-nano fiber and a catalyst nanoparticle layer; the transition zone and the uniform zone of the tapered micro-nano fiber form an interference structure , and the tapered micro-nano optical fiber and the single-mode optical fiber are fused to form an optical fiber sensing probe; the catalyst nanoparticle layer is fixed on the surface of the tapered micro-nano optical fiber to assemble into a single-layer film; After the particle layer is fixed, it is immersed in a solution containing organic molecules. The organic molecules are enriched on the surface of the tapered micro-nano fiber to form an organic interface layer, and the light source is input into the tapered micro-nano fiber. Based on the characteristics of wave sensitivity to changes in the external environment, the photocatalytic process of the organic interface layer is monitored. The invention not only greatly reduces the cost and improves the sensitivity of the optical fiber sensing, but also realizes the in-situ monitoring of the photocatalytic process by utilizing the small volume of the optical fiber sensing probe.

Description

Technical field [0001] The present invention relates to an optical real-time monitoring apparatus and method, in particular, a sensor device and method for real-time monitoring of photocatalyst catalytic processes, belonging to the field of biomedical light sensing technology. Background technique [0002] In recent years, due to the application of air and water purification and disinfection, hydrogen production, solar cell, photochemical synthesis, photopolymerization, targeting tumor therapy, etc., photocatalysts have been widely concerned. A series of photocatalysts acting in ultraviolet regions, such as mercium sulfide, zinc oxide, titanium oxide, is reported, thereafter, in order to broaden the application range of the catalyst, a photocatalyst acting in the visible light region, such as oxide copper is developed. Later, a lot of work was carried out in order to improve the photocatalytic efficiency of the oxide copper. Therefore, in-depth understanding of the photocatalytic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/84
CPCG01N21/84
Inventor 黄赟赟肖翱翔关柏鸥
Owner JINAN UNIVERSITY
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