1 Girma Gonfa, 1,2 Sintayehu Mekuria Hailegiorgis
particles, heavy metals can be removed from aqueous so-
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particles, heavy metals can be removed from aqueous so- lutions. Te same has already been demonstrated in a number of studies, supporting its use in the treatment of industrial efuent [179]. Additionally, silica nanoparticles have been demonstrated to reduce or completely eliminate the biological oxygen demand (Sahebi et al.). Compared to more traditional approaches that do not use silica nano- particles, biological oxygen demand (BOD) activity is more efective [180]. To test their antibacterial efectiveness, synthetically made silver nanoparticles were mixed with silica nanoparticles. Furthermore, the temperature and or- ganic matter content of nanoparticles had a signifcant impact on their antiviral activity. According to the study, silica linked nanoparticles may be used as antivirals to destroy viruses in wastewater [181]. 5.9. For the Application of Semiconductor. Te main com- ponent of the solar cell’s semiconductor layer may be silica. Te semiconductor is a substance with conductivity that is between that of an insulator and that of a conductor. Te bandgap energy is the primary factor that determines how a semiconductor interacts with other materials. Te dif- ference between the valence band and the conduction band section, which defnes the amount of transition energy re- quired to convert the electron band from the valence band to the conduction band, is determined by the energy bandgap [182]. Bandgap energy for semiconductors ranges from 0 to 4 eV, whereas it is beyond 4 eV for isolators and below 0.5 eV for conductors [183]. Due to the leaps made by excited electrons, semiconductors are created as materials that support electric currents. Te photovoltaic principle states that silicon crystalline base material is used to create solar cells because of its abundance, lack of toxicity, and high conversion efciency [184]. tải về 1.86 Mb. Chia sẻ với bạn bè của bạn:
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