Ultraviolet Spectral Energy Distribution of Sunlight

Searle, N. Z.; Hirt, R. C.

doi:10.1364/josa.55.001413

Cited by 20 publications

(5 citation statements)

References 5 publications

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“…An integrating counter was used to determine the UV intensity in the 31@400 nm range at the same level in each of the sections. The absolute UV intensities reported in the table were estimated by comparison of measurements obtained with the 257 counter with published absolute data taken under standardized conditions (Hirt et al, 1960;Searle and Hirt, 1965).…”

Section: Methodsmentioning

confidence: 99%

Photosensitized Herbicidal Action

Zweig¹,

Nachtigall²

1975

Photochem & Photobiology

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Section: Methodsmentioning

confidence: 99%

Photosensitized Herbicidal Action

Zweig¹,

Nachtigall²

1975

Photochem & Photobiology

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“…Different wavelengths of light appear different colors. 16 More importantly, light can not only travel forward like waves, but also show the characteristics of particles. Light has both wave characteristics and particle characteristics.…”

Section: Light and Photochemical Effectsmentioning

confidence: 99%

“…Otherwise, the electrons jump back to the previous orbit again and release energy in the form of waves. Different wavelengths of light appear different colors 16 …”

Section: Light and Photochemical Effectsmentioning

confidence: 99%

A review on photochemical effects of common plastics and their related applications

Huang,

Wang

2023

Journal of Polymer Science

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The photochemical effects of plastics refer to a series of photochemical reactions of plastics under certain illumination conditions. In order to help researchers understand the research progress of photochemical effects of plastics, we will introduce photochemical effects of seven common plastics and discuss the influence of functional groups of polymers in plastics on the photochemical effects of plastics in this review. Based on this, we discuss the impact of photochemical effects on the properties of plastics and some factors affecting the surface photochemical effects of plastics. Last but not least, although in most cases the photochemical effects of plastics are extremely detrimental to the control of plastic pollution, some applications based on the photochemical effects of plastics will also be introduced in this review. It is believed that this review can provide some new ideas for the development of new and clean processes and some promising materials such as light‐responsive materials.

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“…The bandgap of TiO2 is 3.2 eV, permitting the electron to be conveyed from the valence energy level to the conduction energy level under UV radiation. The UV spectrum participates in about 5% of the total light spectrum [46]. This implies that the reaction rate (Eqn.…”

Section: Kinetic Pathwaymentioning

confidence: 99%

The Photo-Oxidation of CO from Ambient Air Using Catalytic Asphaltic Pavement

Mohammed¹,

Shnain²,

Alwasiti³

et al. 2023

ETJ

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The effectiveness of the oxidation of carbon dioxide gas emitted by an internal combustion engine was studied.• The CO conversion positively depends on Cu loading, light intensity, and relative humidity.• The best photo-oxidation efficiency of 56.4% was achieved after three hours of operation.Road transportation in urban areas may be considered a major source of environmental pollution. The purpose of this study is to determine the effectiveness of the oxidation of carbon dioxide gas emitted by an internal combustion engine. This is achieved using an asphaltic pavement coated with Cu/TiO 2 nanoparticles by spraying and irradiating with white light under ambient conditions to reduce the air pollution problem (carbon monoxide) caused by vehicles. Using electron microscopy, energy dispersive spectroscopy, and Fourier transform infrared spectroscopy, we determined the physicochemical and morphological characteristics of the photocatalyst. Following the characterization study, the photo-catalytic activity of the asphalt materials was determined.Experimental results showed that CO conversion positively depends on different conditions, including Cu loading, light intensity, and relative humidity. However, the gas flow rate showed a different trend. The optimal operating parameters were determined as follows: Cu loading (3.6% by weight), a flow rate of gas (1 L/min), relative humidity (30%), and light intensity (35 W/m 2 ) to ensure the best photo-oxidation efficiency of 56.4% after three hours of operation. A mathematical correlation related to CO 2 removal as a function of different operating conditions was found with a correlation factor of 0.975 and a variance equal to 0.964. Moreover, a kinetic pathway for photo-oxidation of CO at various oxygen concentrations was presented.

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Ultraviolet Spectral Energy Distribution of Sunlight

Cited by 20 publications

References 5 publications

Photosensitized Herbicidal Action

Photosensitized Herbicidal Action

A review on photochemical effects of common plastics and their related applications

The Photo-Oxidation of CO from Ambient Air Using Catalytic Asphaltic Pavement

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