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Journal articles on the topic 'UV-Visible light'

Author: Grafiati

Published: 22 June 2024

Last updated: 31 July 2025

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1

Hersch, Roger D., Philipp Donzé, and Sylvain Chosson. "Color images visible under UV light." ACM Transactions on Graphics 26, no. 3 (2007): 75. http://dx.doi.org/10.1145/1276377.1276471.

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2

Næsborg, Line, and Rubaishan Jeyaseelan. "Triplet‐triplet annihilation upconversion." Nachrichten aus der Chemie 72, no. 9 (2024): 62–64. http://dx.doi.org/10.1002/nadc.20244142065.

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AbstractTriplet‐triplet annihilation upconversion can generate UV light from visible light LEDs and visible light from infrared. Producing higher‐energy photons at the location where they are needed is useful: some functional groups do not tolerate irradation with UV light, and visible light does not penetrate cells and polymers as deep as infrared light.

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Wolf, Ursula, Sabine Klein, Annegret Sandig, and Stephan Baumgartner. "Investigating homeopathic preparations with light spectroscopy." International Journal of High Dilution Research - ISSN 1982-6206 11, no. 40 (2021): 117. http://dx.doi.org/10.51910/ijhdr.v11i40.584.

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Background  Several series of experiments from our research group have shown ultraviolet (UV) light transmission of homeopathic preparations to slightly but significantly differ from controls. We now investigated whether visible and near infrared spectroscopy were also useful for exploring properties of homeopathic preparations.  Materials and methods  Homeopathic preparations of copper sulfate (CuSO4), hypericum and sulfur (S8) were produced in 30 sequential steps of 1:100 dilutions (c-preparations). As controls, succussed potentization medium was used. Tra

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4

Dunnill, Charles W. "UV Blocking Glass: Low Cost Filters for Visible Light Photocatalytic Assessment." International Journal of Photoenergy 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/407027.

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A number of commercially available art protection products have been compared and assessed for their suitability as UV blocking filters in the application of “visible light” photocatalytic research. Many groups claiming visible light photocatalytic success employ filters to block out stray UV radiation in order to justify that their photocatalysts are indeed visible light photocatalysts and not UV light photocatalysts. These filters come in varying degrees of ability and price and many authors fail to correctly characterise their filters in individual papers. The use of effective filters to pr

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Peccia, Jordan, and Mark Hernandez. "Photoreactivation in AirborneMycobacterium parafortuitum." Applied and Environmental Microbiology 67, no. 9 (2001): 4225–32. http://dx.doi.org/10.1128/aem.67.9.4225-4232.2001.

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ABSTRACT Photoreactivation was observed in airborne Mycobacterium parafortuitum exposed concurrently to UV radiation (254 nm) and visible light. Photoreactivation rates of airborne cells increased with increasing relative humidity (RH) and decreased with increasing UV dose. Under a constant UV dose with visible light absent, the UV inactivation rate of airborne M. parafortuitum cells decreased by a factor of 4 as RH increased from 40 to 95%; however, under identical conditions with visible light present, the UV inactivation rate of airborne cells decreased only by a factor of 2. When irradiate

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LYUBOVTSEVA, Yu S. "AEROSOL ABSORPTION OF UV AND VISIBLE LIGHT." Journal of Aerosol Science 32 (September 2001): 429–30. http://dx.doi.org/10.1016/s0021-8502(21)00197-x.

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7

Al-Sherbini, El-Sayed A. M. "UV–visible light reshaping of gold nanorods." Materials Chemistry and Physics 121, no. 1-2 (2010): 349–53. http://dx.doi.org/10.1016/j.matchemphys.2010.01.048.

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8

Luo, Kaiyi, Jing Li, Wenyu Hu, et al. "Synthesizing CuO/CeO2/ZnO Ternary Nano-Photocatalyst with Highly Effective Utilization of Photo-Excited Carriers under Sunlight." Nanomaterials 10, no. 10 (2020): 1946. http://dx.doi.org/10.3390/nano10101946.

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The construction of heterostructured photocatalyst with an appropriate energy band structure will help realize highly efficient photo-excited charge separation. In this study, ternary CuO/CeO2/ZnO nano-particle (NP) composites were synthesized by a facile two-step sol-gel method, which exhibit significantly enhanced photocatalytic degradation performance for various organic pollutants under UV and visible light excitation. The photo-responses to both UV and visible light, as well as the visible light absorption and utilization rates of ZnO are found to be synergistically intensified by CeO2 an

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9

Sipauba Carvalho da Silva, Yhang Ricardo, Rihito Kuroda, and Shigetoshi Sugawa. "A Highly Robust Silicon Ultraviolet Selective Radiation Sensor Using Differential Spectral Response Method." Sensors 19, no. 12 (2019): 2755. http://dx.doi.org/10.3390/s19122755.

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This paper presents a silicon ultraviolet radiation sensor with over 90% UV internal quantum efficiency (QE) and high selectivity to the UV waveband without using optical filters. The sensor was developed for applications that require UV measurement under strong background visible and near-infrared (NIR) lights, such as solar UV measurement, UV-C monitoring in greenhouses or automated factories, and so on. The developed sensor is composed of monolithically formed silicon photodiodes with different spectral sensitivities: a highly UV responsive photodiode with internal quantum efficiency (QE) o

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Zhao, Zhiguo, Xian Zhang, Xuying Niu, et al. "Photoelectric properties of glass-ceramics containing KTb₂F₇ nanocrystals for UV detection." RSC Advances 13, no. 42 (2023): 29419–26. http://dx.doi.org/10.1039/d3ra05044k.

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Oxyfluoride glass-ceramic containing KTb2F7 nanocrystals can convert UV light into visible light, and then the visible light is absorbed by Si-APD to produce a photocurrent. This UV detector has a large dynamic linear response range, fast response speed and high sensitivity.

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11

Safni, Safni, Mechy Rezita Wahyuni, Khoiriah Khoiriah, and Yulizar Yusuf. "Degradation of Phenol By Photolysis Using N-doped TiO2 Catalyst." Molekul 14, no. 1 (2019): 6. http://dx.doi.org/10.20884/1.jm.2019.14.1.447.

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Phenol (C6H5OH) is a common contaminant in wastewater. In certain concentrations, phenol can inhibit the activity of microorganisms and give adverse effects tohumanhealth, such as liver and kidney damage, perfect heart rate, and lower blood pressure. In this study, phenol was degraded with andwithoutN-doped TiO2under photolysis UV-light (10 Watts, λ = 365 nm) and visible-light (13 watt Philips, lux= 1400, λ = 465-640 nm)irradiation. The reductionof phenol concentrationwas measured by a UV-Vis spectrophotometer at a wavelength 200-400 nm. Some parameters such as catalyst dose, irradiation times

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12

Stephen, K. W., D. Campbell, and R. Strang. "A two-year visible light/UV light filled sealant study." British Dental Journal 159, no. 12 (1985): 404–5. http://dx.doi.org/10.1038/sj.bdj.4805747.

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13

Sarita and Kumud Intodia. "Investigative Study of Crystal Violet Photo-Degradation in The Presence of Lead Chromate." International Research Journal on Advanced Engineering and Management (IRJAEM) 3, no. 01 (2025): 27–34. https://doi.org/10.47392/irjaem.2025.0007.

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This study addresses the environmental challenges posed by wastewater from dye factories, focusing on Crystal Violet, a dye with severe genotoxic effects. It highlights the photocatalytic efficiency of lead chromate, synthesized via direct co-precipitation, for degrading organic pollutants under visible light. FT-IR and UV-Visible spectroscopy confirmed its structural and optical properties. Key parameters like pH, dye concentration, semiconductor dosage, and light intensity were optimized, and a potential photodegradation mechanism for Crystal Violet was proposed. Figure 1 shows UV Lights Irr

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Choi, Jin-Wook, and Jun Hyup Lee. "Selectively UV-Blocking and Visibly Transparent Adhesive Films Embedded with TiO2/PMMA Hybrid Nanoparticles for Displays." Materials 13, no. 22 (2020): 5273. http://dx.doi.org/10.3390/ma13225273.

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To simultaneously achieve the high visible transparency and enhance the ultraviolet (UV)-blocking performance of displays, inorganic–organic hybrid nanoparticles, comprising TiO2 as a core and poly(methyl methacrylate) (PMMA) as a shell, were uniformly incorporated into the optically clear adhesive (OCA) used in the front of a display device. The highly refractive TiO2 nanocore could selectively scatter UV rays, which degrade the display performance, owing to the differences in the refractive indices between the inorganic particles and PMMA matrix, thereby offering an improved UV protection pr

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15

Sulaeman, Uyi, Shu Yin, and Tsugio Sato. "Solvothermal Synthesis and Photocatalytic Properties of Nitrogen-Doped SrTiO3Nanoparticles." Journal of Nanomaterials 2010 (2010): 1–6. http://dx.doi.org/10.1155/2010/629727.

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Perovskite-type nitrogen-doped SrTiO3nanoparticles of 50–80 nm in diameter were successfully synthesized by the solvothermal of Ti(OC3H7)4, SrCl2⋅6H2O, and hexamethylenetetramine in KOH aqueous solution. Nitrogen-doped SrTiO3showed excellent photocatalytic activity under both UV and visible light irradiation, that is, the photocatalytic activity of N-doped SrTiO3for DeNOxreaction was greater than that of SrTiO3and commercial TiO2(Degussa P25) in both visible light region (>510 nm) and UV light region (>290 nm). The excellent visible light photocatalytic activity of this substance was cau

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16

Katsumata, Ken-ichi, Nobuhiro Matsushita, and Kiyoshi Okada. "Preparation of TiO2-Fullerene Composites and Their Photocatalytic Activity under Visible Light." International Journal of Photoenergy 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/256096.

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The development of visible light-sensitive photocatalytic materials is being investigated. In this study, the anatase and rutile-C60composites were prepared by solution process. The characterization of the samples was conducted by using XRD, UV-vis, FT-IR, Raman, and TEM. The photocatalytic activity of the samples was evaluated by the decolorization of the methylene blue. From the results of the Raman, FT-IR, and XRD, the existence of the C60was confirmed in the samples. The C60was modified on the anatase or rutile particle as a cluster. The C60didn't have the photocatalytic activity under UV

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17

BLINOV, LEV M., RICCARDO BARBERI, MIKHAIL V. KOZLOVSKY, VLADIMIR V. LAZAREV, and MARIA P. DE SANTO. "OPTICAL ANISOTROPY AND FOUR POSSIBLE ORIENTATIONS OF A NEMATIC LIQUID CRYSTAL ON THE SAME FILM OF A PHOTOCHROMIC CHIRAL SMECTIC POLYMER." Journal of Nonlinear Optical Physics & Materials 09, no. 01 (2000): 1–10. http://dx.doi.org/10.1142/s0218863500000029.

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Spin coated films of a chiral comb-like liquid crystalline copolymer containing azobenzene chromophores in its side chains are optically isotropic in their twisted smectic-like glassy state. In contact with a nematic liquid crystal (5CB, E7, MBBA) they provide a degenerate planar orientation. When irradiated by unpolarized UV light, they orient the same nematics homeotropically. Treated with linearly polarized UV light they orient nematics homogeneously with the director along the electric vector of the exciting light. After a combined irradiation first with unpolarized UV light and then with

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18

Pitre, Spencer P., Tehshik P. Yoon, and Juan C. Scaiano. "Titanium dioxide visible light photocatalysis: surface association enables photocatalysis with visible light irradiation." Chemical Communications 53, no. 31 (2017): 4335–38. http://dx.doi.org/10.1039/c7cc01952a.

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While titanium oxide (TiO<sub>2</sub>) photocatalysis is typically enabled by UV irradiation, association of indole to the TiO<sub>2</sub> surface was found to enable photocatalysis with visible light irradiation.

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19

Yuan, Ze, Liangpei Wang, Chenyu Wang, et al. "Advancements in Dual-Function UV-Visible Light Detection." Journal of Physics: Conference Series 2809, no. 1 (2024): 012007. http://dx.doi.org/10.1088/1742-6596/2809/1/012007.

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Abstract This research introduces a photodetector capable of differentiating between ultraviolet (UV) and visible light, employing the unique properties of zinc oxide (ZnO) and α-silicon (α-Si). The core of this innovative device is a pixel unit circuit, designed with three integral components: a delay circuit for precise timing, a photosensitive element composed of an α-Si thin film resistor and a ZnO thin film transistor (ZnO TFT) for respective light spectrum detection, and a source follower for effective signal transmission. Through simulations conducted in Cadence Virtuoso, the device’s r

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20

Chen, Hongjun, Qiong Wang, Miaoqiang Lyu, Zhi Zhang, and Lianzhou Wang. "Wavelength-switchable photocurrent in a hybrid TiO2–Ag nanocluster photoelectrode." Chemical Communications 51, no. 60 (2015): 12072–75. http://dx.doi.org/10.1039/c5cc03480a.

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A new type of hybrid TiO<sub>2</sub>–Ag nanocluster (NC) photoelectrode exhibits wavelength-switchable photocurrent by tuning the light wavelength from ultraviolet (UV) to visible light. The combination of UV-active TiO<sub>2</sub> and visible-light-active Ag NCs with photoelectrochemical behaviour leads to the unique switchable photocurrent in the system.

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21

Jia, Feixiang, Fan Huang, Sheng Ouyang, et al. "Design of photoactive hybrid based intelligent photodetectors for identifying the detected wavelength." Journal of Materials Chemistry C 4, no. 46 (2016): 10797–803. http://dx.doi.org/10.1039/c6tc03449g.

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The similar response time for UV and visible light of the graphene/CdS photodetector is intentionally tuned by inserting ZnS films to produce the graphene/ZnS/CdS photodetector, which can be used as a characteristic parameter to distinguish the detected UV and visible light.

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22

Sipauba Carvalho da Silva, Yhang Ricardo, Rihito Kuroda, and Shigetoshi Sugawa. "An Optical Filter-Less CMOS Image Sensor with Differential Spectral Response Pixels for Simultaneous UV-Selective and Visible Imaging." Sensors 20, no. 1 (2019): 13. http://dx.doi.org/10.3390/s20010013.

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This paper presents a complementary metal-oxide-semiconductor (CMOS) image sensor (CIS) capable of capturing UV-selective and visible light images simultaneously by a single exposure and without employing optical filters, suitable for applications that require simultaneous UV and visible light imaging, or UV imaging in variable light environment. The developed CIS is composed by high and low UV sensitivity pixel types, arranged alternately in a checker pattern. Both pixel types were designed to have matching sensitivities for non-UV light. The UV-selective image is captured by extracting the d

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23

Pennisi, E. "Visible, UV-A Light Tied to Skin Cancer." Science News 144, no. 4 (1993): 53. http://dx.doi.org/10.2307/3977598.

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24

Witt, A. N. "Diffuse Galactic Light in the UV and Visible." Symposium - International Astronomical Union 139 (1990): 127–38. http://dx.doi.org/10.1017/s0074180900240540.

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The diffuse galactic light, resulting from the coherent scattering of galactic starlight by dust grains contained in the general interstellar medium, has been the subject of active investigation for nearly 60 years. The separation of the diffuse galactic light from the other sources contributing to the light from the night sky has proven difficult, and different attempts at measuring the intensity and galactic distribution of the diffuse galactic light, both in the visible and the UV, are reviewed here. The interpretation of such measurements in terms of average scattering properties of inters

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25

Walalawela, Niluksha, and Alexander Greer. "Heterogeneous photocatayltic deperoxidation with UV and visible light." Journal of Physical Organic Chemistry 31, no. 6 (2018): e3807. http://dx.doi.org/10.1002/poc.3807.

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26

Liu, Ming, Gang Liu, and Shi Qiang Cui. "Synthesis and Fluorescence Switching of a New Purple Photochromic Diarylethene." Advanced Materials Research 399-401 (November 2011): 900–903. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.900.

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A novel photochromic diarylethene was synthesized and its photochromism, fluorescence properties have been investigated. It underwent reversible cyclization and cycloreversion reactions upon alternating irradiation with UV and visible light in hexane. The results showed that this compound exhibited reversible photochromism and good fluorescent switching in solution and in PMMA upon irradiation with UV light and visible light.

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27

Alkanad, Khaled, Othman Ali, Sujay Shekar G. C., Abdo Hezam, Mohammed Abdullah Bajiri та Lokanath N. K. "Highly Efficient Degradation of Organic Compounds via β-Bi₂O₃Semiconductor Under Visible Illumination". IOP Conference Series: Materials Science and Engineering 1221, № 1 (2022): 012040. http://dx.doi.org/10.1088/1757-899x/1221/1/012040.

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Abstract β-Bi2O3semiconductor nanoparticles synthesized by solution combustion method. The as-synthesized sample was systematically characterized by several techniques, including PXRD, DLS, Raman spectrometry, SEM, and DRS-UV-vis spectroscopy. PXRD and Raman analyses confirmed high crystallinity and phase purity of the prepared β-Bi2O3. SEM and DLS showed the morphology and the agglomeration of β-Bi2O3nanoparticles.DRS-UV-Vis showed the enhanced visible light absorption toward the visible light range with bandgap 2.43 eV. Significantly, β-Bi2O3 nanoparticles demonstrated outstanding visible-li

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28

Fu, Yongqiang, and Marcin Janczarek. "UV and Visible Light-Induced Photocatalytic Efficiency of Polyaniline/Titanium Dioxide Heterostructures." Molecules 30, no. 1 (2024): 23. https://doi.org/10.3390/molecules30010023.

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The concept of using polyaniline/titanium dioxide heterostructures as efficient photocatalysts is based on the synergistic effect of conducting polymer and metal oxide semiconductors. Due to inconclusive literature reports, the effect of different polyaniline/TiO2 ratios on photocatalytic activity under UV and visible light was investigated. In most papers, non-recommended dyes are used as model compounds to evaluate visible light activity. Therefore, colorless phenol was used instead of dyes in this study to clarify the real visible light-induced photocatalytic activity of polyaniline/TiO2 co

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29

Rohayati, Zaina, Eko Sri Kunarti, and Bambang Rusdiarso. "Synthesis of Magnetically Separable Fe<sub>3</sub>O<sub>4</sub>/TiO<sub>2</sub>-Ag with Enhanced Photocatalytic Performance under Visible Light for Degradation of Metanil Yellow." Key Engineering Materials 949 (July 26, 2023): 131–42. http://dx.doi.org/10.4028/p-awq1lx.

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Synthesis of magnetic photocatalyst, Fe3O4/TiO2-Ag, with characterization and photoactivity examination have been investigated. The synthesis was initiated by preparation of Fe3O4 particles using coprecipitation method. The Fe3O4 particles were then coated with TiO2-Ag, weight ratios of concentrations Silver dopant were varied from 1 to 3, 5 and 7 wt%. The Fe3O4/TiO2-Ag was characterized by FTIR, XRD, TEM, SEM-EDX, DR UV-visible and VSM methods. The degradation of metanil yellow solution was performed under exposure to UV, visible light and dark condition at optimum condition. The Fe3O4 and an

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30

Petrova, Stefani, Kalina Ivanova, Iliana Ivanova, and Albena Bachvarova-Nedelcheva. "Optical, Photocatalytic, and Antibacterial Properties of Sol-Gel Derived Fe Doped SrTiO3 Powders." Water 17, no. 14 (2025): 2072. https://doi.org/10.3390/w17142072.

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In this study, Fe-doped SrTiO3 powders have been synthesized using the sol-gel approach. The effect of the Fe3+ doping on the degradation efficiency of SrTiO3 toward specific pollutants was studied. The obtained samples were characterized using the following techniques: XRD, SEM-EDS, FTIR, UV-Vis, and BET. Subsequently, the samples were tested for degradation of two organic pollutants—tetracycline hydrochloride and Malachite green in distilled water under different light sources—UV light and visible light. The investigated powders exhibited good photocatalytic degradation efficiency against bo

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31

Panyatanmaporn, Thammarat, Jittiporn Kruenate, Chuanchom Aumnate, and Thammarak Sooksomsong. "The Synthesis of Titanium Dioxide Emulsion as UV Blocking." Advanced Materials Research 93-94 (January 2010): 635–38. http://dx.doi.org/10.4028/www.scientific.net/amr.93-94.635.

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The solar light consists of ultraviolet, visible and infrared ray. The ultraviolet and infrared rays, unlike visible ray, are not benefit to photosynthesis. Inorganic ultraviolet absorbing materials are mostly in crystallised phase such as TiO2, ZnO and CeO2 which caused lower transmittion in visible range. As known that, the commercial organic UV absorbers can absorb only the appointed UV wavelength. TiO2 emulsion for ultraviolet blocking was synthesized in this project in order to overcome such poor transmittion behavior. The preparative TiO2 emulsion can absorb UV completely without interfe

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32

Thongpool, Voranuch, and Akapong Phunpueok. "Preparation and Photocatalytic Performance of RGO/TiO₂ Photocatalyst." Key Engineering Materials 728 (January 2017): 359–63. http://dx.doi.org/10.4028/www.scientific.net/kem.728.359.

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In this study, reduced graphene oxide and Titanium dioxide (RGO/TiO2) photocatalysts were synthesized by ultrasonic mixing. The prepared RGO/TiO2 photocatalysts were characterized by scanning electron microscopy, X-ray diffraction spectroscopy and UV-visible spectrophotometry. The performance of the RGO/TiO2 photocatalysts was studied under UV and visible light evaluated by the degradation of the methylene blue (MB). In the photocatalytic process, all the RGO/TiO2 photocatalysts showed better photocatalytic activity than commercial TiO2 nanopowder (P25) under visible light, which showed that R

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33

Roche, Alejandro, Luis Oriol, Rosa M. Tejedor, and Milagros Piñol. "Polymeric Self-Assemblies Based on tetra-ortho-Substituted Azobenzene as Visible Light Responsive Nanocarriers." Polymers 11, no. 12 (2019): 2060. http://dx.doi.org/10.3390/polym11122060.

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Most of reported polymeric light-responsive nanocarriers make use of UV light to trigger morphological changes and the subsequent release of encapsulated cargoes. Moving from UV- to visible-responsive units is interesting for the potential biomedical applications of these materials. Herein we report the synthesis by ring opening polymerization (ROP) of a series of amphiphilic diblock copolymers, into which either UV or visible responsive azobenzenes have been introduced via copper(I) catalyzed azide-alkyne cycloaddition (CuAAC). These copolymers are able to self-assemble into spherical micelle

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Mancuso, Antonietta, Wanda Navarra, Olga Sacco, Stefania Pragliola, Vincenzo Vaiano, and Vincenzo Venditto. "Photocatalytic Degradation of Thiacloprid Using Tri-Doped TiO2 Photocatalysts: A Preliminary Comparative Study." Catalysts 11, no. 8 (2021): 927. http://dx.doi.org/10.3390/catal11080927.

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Different tri-doped TiO2 photocatalysts (Fe-N-P/TiO2, Fe-N-S/TiO2, Fe-Pr-N/TiO2, Pr-N-S/TiO2, and P-N-S/TiO2) were successfully prepared and tested in the photocatalytic removal of thiacloprid (THI) under UV-A, visible, and direct solar light irradiation. The physical-chemical properties of the prepared catalysts were analyzed by different characterization techniques, revealing that dopants are effectively incorporated into the anatase TiO2 lattice, resulting in a decrease of the energy band gap. The reduction of photoluminescence intensity indicates a lower combination rate and longer lifespa

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35

Toor, Amrit Pal, Neha Yadav, and R. K. Wanchoo. "Enhancement in Photocatalytic Activity of Nano-TiO₂ Photocatalyst by Carbon Doping." Materials Science Forum 757 (May 2013): 271–84. http://dx.doi.org/10.4028/www.scientific.net/msf.757.271.

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The carbon doped TiO2 nanoparticles with different amount of carbon content were prepared using starch as the carbon source. The physical properties of the as-prepared catalyst were determined using X-ray diffraction, transmission electron microscopy and UV-vis diffuse reflectance spectroscopy. The results showed that carbon was successfully doped into TiO2 and the optical response of TiO2 was shifted from UV to the visible light region. The photocatalytic activity of these catalysts was evaluated by the degradation of phenol under UV and visible light irradiation. C-doped TiO2 nanocomposites

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36

Brainard, George C., John P. Hanifin, Felix M. Barker, Britt Sanford, and Milton H. Stetson. "Influence of near-ultraviolet radiation on reproductive and immunological development in juvenile male Siberian hamsters." Journal of Experimental Biology 204, no. 14 (2001): 2535–41. http://dx.doi.org/10.1242/jeb.204.14.2535.

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SUMMARY The aim of this study was to characterize the lenticular ultraviolet transmission of the Siberian hamster (Phodopus sungorus) and to probe the range of near-ultraviolet (UV-A, 315–400nm) and visible wavelengths (400–760nm) for modulating the photoperiodic regulation of its reproductive and immune systems. Ocular lenses from adult hamsters were found to transmit UV-A wavelengths at similar levels to visible wavelengths, with a short-wavelength cut-off of 300nm. Five separate studies compared the responses of juvenile male hamsters to long photoperiods (16h:8h L:D), short photoperiods (1

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37

Mohamed Nazli, Muhammad Nurullah Waliyullah, and Irneza Ismail. "Portable Spectroscopy with Movable Light Source for Rapid Liquid Sensing via Optical Light Propagation." Semarak Proceedings of Applied Sciences and Engineering Technology 1, no. 1 (2025): 25–34. https://doi.org/10.37934/spaset.1.1.2534a.

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Ultraviolet-Visible (UV-VIS) spectroscopy measures light absorption intensity in a sample solution. This technique operates within the UV-Visible wavelength range. UV-VIS spectroscopy analyses samples using light within the ultraviolet and visible wavelength ranges. This method is non-invasive and simpler than other techniques. However, current spectrometers are often less sensitive to low concentration samples, bulky and not portable. Therefore, the aim of this research is to incorporate a motorized XY axis into the system as well as focusing on designing a portable Arduino-based spectroscopy

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38

Teng, Honghui, Shukun Xu, Dandan Sun, and Ying Zhang. "Preparation of Fe-DopedTiO2Nanotubes and Their Photocatalytic Activities under Visible Light." International Journal of Photoenergy 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/981753.

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Fe-doped TiO2nanotubes (Fe-TNTs) have been prepared by ultrasonic-assisted hydrothermal method. The structure and composition of the as-prepared TiO2nanotubes were characterized by transmission electron microscopy, X-ray diffraction, and UV-Visible absorption spectroscopy. Their photocatalytic activities were evaluated by the degradation of MO under visible light. The UV-visible absorption spectra of the Fe-TNT showed a red shift and an enhancement of the absorption in the visible region compared to the pure TNT. The Fe-TNTs were provided with good photocatalytic activities and photostability

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39

AHN, J., B. GAN, Q. ZHANG, et al. "CHARACTERISTICS OF CVD DIAMOND FILMS IN DETECTING UV, X-RAY AND ALPHA PARTICLE." International Journal of Modern Physics B 16, no. 06n07 (2002): 1018–23. http://dx.doi.org/10.1142/s0217979202010798.

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The CVD diamond UV photodetector shows more than four orders of photoresponsivity discrimination between UV and visible light. Post-treatment on as-fabricated photodetector is essential for a good response to UV light and blindness to visible light. The CVD diamond X-ray detector shows linear dependence of photocurrent on X-ray intensity and high response speed. The mapping of charge collection efficiency on the whole sensing area of a CVD diamond alpha particle detector has been obtained using ion-beam-induced charge microscopy technique. Three peaks have been observed in the charge collectio

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Sakalauskaite, Sandra, Neringa Kuliesiene, Deimante Galalyte, et al. "Potential and Risk of the Visible Light Assisted Photocatalytical Treatment of PRD1 and T4 Bacteriophage Mixtures." Environmental and Climate Technologies 24, no. 3 (2020): 215–24. http://dx.doi.org/10.2478/rtuect-2020-0098.

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Abstract In current study UV light and visible light activated photocatalytic inactivation treatment was applied to the less commonly studied subjects, namely bacteriophages PRD1, T4 and their mixture. By using UV light irradiation and high efficiency P25 TiO2 photocatalyst powders it was demonstrated that individually and in mixture PRD1 bacteriophage is particularly vulnerable to the photocatalytic inactivation and in just approximately 20 min its infectivity is reduced by 100 %. As for the T4 bacteriophage, it has been reported that under UV irradiation T4 triggers self-repair and replicati

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Sakalauskaite, Sandra, Neringa Kuliesiene, Deimante Galalyte, et al. "Potential and Risk of the Visible Light Assisted Photocatalytical Treatment of PRD1 and T4 Bacteriophage Mixtures." Environmental and Climate Technologies 24, no. 3 (2020): 215–24. http://dx.doi.org/10.2478/rtuect-2020-0098.

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AbstractIn current study UV light and visible light activated photocatalytic inactivation treatment was applied to the less commonly studied subjects, namely bacteriophages PRD1, T4 and their mixture. By using UV light irradiation and high efficiency P25 TiO2 photocatalyst powders it was demonstrated that individually and in mixture PRD1 bacteriophage is particularly vulnerable to the photocatalytic inactivation and in just approximately 20 min its infectivity is reduced by 100 %. As for the T4 bacteriophage, it has been reported that under UV irradiation T4 triggers self-repair and replicatio

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Juine, Rabindra Nath, Binay Kumar Sahu, and Arindam Das. "Recyclable ZnS QDs as an efficient photocatalyst for dye degradation under the UV and visible light." New Journal of Chemistry 45, no. 13 (2021): 5845–54. http://dx.doi.org/10.1039/d1nj00588j.

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Overholt, Erin P., Meghan A. Duffy, Matthew P. Meeks, Taylor H. Leach, and Craig E. Williamson. "Light exposure decreases infectivity of the Daphnia parasite Pasteuria ramosa." Journal of Plankton Research 42, no. 1 (2020): 41–44. http://dx.doi.org/10.1093/plankt/fbz070.

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Abstract Climate change is altering light regimes in lakes, which should impact disease outbreaks, since sunlight can harm aquatic pathogens. However, some bacterial endospores are resistant to damage from light, even surviving exposure to UV-C. We examined the sensitivity of Pasteuria ramosa endospores, an aquatic parasite infecting Daphnia zooplankton, to biologically relevant wavelengths of light. Laboratory exposure to increasing intensities of UV-B, UV-A, and visible light significantly decreased P. ramosa infectivity, though there was no effect of spore exposure on parasitic castration o

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Zhou, Yan Huai, Xing He Wang, Jia Chen, and Rui Pu. "Preparation of Doped TiO₂Responded to Visible Light." Advanced Materials Research 936 (June 2014): 819–21. http://dx.doi.org/10.4028/www.scientific.net/amr.936.819.

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Cu-N co-doped TiO2powder was prepared by sol-gel method. The Powder was characterized by X-ray diffraction (XRD) and UV-Visible absorbance spectroscopy (UV-Vis). The X-ray results indicated that Cu-N co-doped has no effect on its anatase type. The UV-Vis results show that the absorb threshold has extend to visible-light, the absorbility of co-doped TiO2is higher than that of pure TiO2, and the Photocatalytic activity has been increased.

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Imparato, Claudio, Giuseppina Iervolino, Marzia Fantauzzi, et al. "Photocatalytic hydrogen evolution by co-catalyst-free TiO2/C bulk heterostructures synthesized under mild conditions." RSC Advances 10, no. 21 (2020): 12519–34. http://dx.doi.org/10.1039/d0ra01322f.

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Dolatyari, Mahboubeh, Mehdi Tahmasebi, Sudabeh Dolatyari, et al. "Core/Shell ZnO/TiO2, SiO2/TiO2, Al2O3/TiO2, and Al1.9Co0.1O3/TiO2 Nanoparticles for the Photodecomposition of Brilliant Blue E-4BA." Inorganics 12, no. 11 (2024): 281. http://dx.doi.org/10.3390/inorganics12110281.

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The synthesis and characterization of ZnO/TiO2, SiO2/TiO2, Al2O3/TiO2, and Al1.9Co0.1O3/TiO2 core/shell nanoparticles (NPs) is reported. The NPs were used for photocatalytic degradation of brilliant blue E-4BA under UV and visible light irradiation, monitored by high-performance liquid chromatography and UV-vis absorption spectroscopy. The size of the NPs ranged from 10 to 30 nm for the core and an additional 3 nm for the TiO2 shell. Al2O3/TiO2 and Al1.9Co0.1O3/TiO2 showed superior degradation under UV and visible light compared to ZnO/TiO2 and SiO2/TiO2 with complete photodecomposition of 20

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Fu, Min, Jiazhen Liao, Fan Dong, Hongmei Li, and Hongyan Liu. "Growth of g-C3N4Layer on Commercial TiO2for Enhanced Visible Light Photocatalytic Activity." Journal of Nanomaterials 2014 (2014): 1–8. http://dx.doi.org/10.1155/2014/869094.

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Novel visible light photocatalytic graphitic carbon nitride/TiO2(g-C3N4/TiO2) composite samples were synthesized by heating mixtures of melamine and commercial TiO2(TO) at different weight ratios. The samples were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), photoluminescence spectroscopy (PL), Fourier transform infrared spectroscopy (FTIR), and UV-visible diffused reflectance spectroscopy (UV-vis DRS). Characterization confirms formation of nanocomposites of g-C3N4/TiO2. At the optimized precursor weight ratio (melam

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Rusinque, Bianca, Salvador Escobedo, and Hugo de Lasa. "Kinetic Modeling and Quantum Yields: Hydrogen Production via Pd-TiO2 Photocatalytic Water Splitting under Near-UV and Visible Light." Catalysts 12, no. 2 (2022): 113. http://dx.doi.org/10.3390/catal12020113.

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A palladium (Pd) doped mesoporous titanium dioxide (TiO2) photocatalyst was used to produce hydrogen (H2) via water splitting under both near-UV and visible light. Experiments were carried out in the Photo-CREC Water-II Reactor (PCW-II) using a 0.25 wt% Pd-TiO2 photocatalyst, initial pH = 4 and 2.0 v/v% ethanol, as an organic scavenger. After 6 h of near-UV irradiation, this photocatalyst yielded 113 cm3 STP of hydrogen (H2). Furthermore, after 1 h of near-UV photoreduction followed by 5 h of visible light, the 0.25 wt% Pd-TiO2 photocatalyst yielded 5.25 cm3 STP of H2. The same photocatalyst,

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Mohammadhosseini, Shakiba, Tariq J. Al-Musawi, Rosario Mireya Romero-Parra, et al. "UV and Visible Light Induced Photodegradation of Reactive Red 198 Dye and Textile Factory Wastewater on Fe2O3/Bentonite/TiO2 Nanocomposite." Minerals 12, no. 11 (2022): 1417. http://dx.doi.org/10.3390/min12111417.

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In the present study, the objective was to probe the capacity of the Fe2O3/Bentonite/TiO2 (Fe2O3/B/TiO2) nanoparticles to act as a catalyst in degrading the reactive red 198 (RR198) dye and textile factory wastewater, utilizing irradiation with visible and UV light. The efficiency of this degradation was studied for a variety of experimental parameters by employing real samples of textile wastewater. After 60 min of reaction time, complete degradation of the target pollutant was visible using the synthesized catalyst, i.e., Fe2O3/B/TiO2, under UV light; the same effect was noted after 90 min u

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Pradipta, Adya Rizky, and Aslan Irunsah. "Synthesis of Modified TiO₂ Nanocomposite using Fe₃O₄ and Nickel as Photocatalyst in Reduction of Silver Ions." Indonesian Journal of Chemical Studies 1, no. 1 (2022): 8–12. http://dx.doi.org/10.55749/ijcs.v1i1.7.

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The use of TiO2 nanocomposite modified with Fe3O4 dan Ni dopping for silver ion photoreduction has been successfully carried out. In this study, nanocomposites were fabricated through the sol-gel technique. Structure, optical, and magnetic properties were analyzed using XRD, DRUV-Vis, FTIR, and VSM analysis. The XRD pattern revealed the anatase phase of TiO2 and the iron oxide formed was Fe3O4. UV-Vis spectroscopy showed the formation of absorption in the visible region in the presence of Ni doping. The nanocomposite had magnetic properties of 12.6 emu/g with paramagnetic type. TiO2 nanopartic

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