由於全球人口在近年來增長快速，每天皆會排放大量廢水，如果沒有施加適當的處理，有可能對人類健康造成重大威脅，並可能進而導致淡水短缺。為了適當地處理廢水，許多處理方法應運而生，涵蓋物理、化學等各個面向。儘管物理及化學處理方法實行上相當簡單，但並非始終具成本效益並對環境友好。有時，這些方法有可能無法完全降解汙水，並生成許多副產物需要附加處理。因此，開發合適、廉價且快速的廢水處理技術將是重大挑戰。高級氧化處理程序（AOPs），是新興的汙水處理方法，能夠產生高反應性的硫酸根自由基來降解有機汙染物。其具備高效率，且有利回收利用催化劑，因此近年來逐漸得到廣泛關注。我們的研究團隊為了處理廢水中各種抗生素和其他有機物質，正在開發新的AOPs方法和催化劑。我們正在開發硼酸鈷（Co2B2O5）作為一種單一成分且高效的光化學催化劑，在模擬太陽光照射下激發單過硫酸氫鉀（PMS）降解有機污染物。基於單過硫酸氫鉀的強氧化還原性、鈷的高電位和金屬硼酸鹽的獨特電催化活性，我們研究了硼酸鈷在AOPs中的光化學催化活性，產生硫酸根自由基。硼酸鈷是通過在800°C下鍛燒醋酸鈷四水合物和硼酸混合物12小時製備的。在中性pH條件下，我們發現該催化劑能夠在模擬太陽輻射下激發PMS對50ppm的四環素（TC）、40ppm的4-硝基苯酚（4-NP）和10ppm的磺胺甲噁唑（SMX）進行有效地降解。本研究還表明，硼酸鈷可以在存在氯離子、硝酸根和碳酸鹽等天然有機物質（NOM）的環境下穩定運作。

In recent years, the astonishing amount of wastewater generated daily due to the increasing global population poses a significant risk to human health and may lead to freshwater shortage if left untreated. To properly treat wastewater, various treatment approaches have been developed, covering various aspects including physical and chemical processes. Although physical and chemical treatment methods are straightforward to operate, they are not always cost-effective and environmentally friendly. Sometimes, these methods may not fully remove pollutants from the wastewater and may generate by-products that require further treatment. Therefore, developing suitable, inexpensive, and rapid wastewater treatment is a significant challenge. Advanced oxidation processes (AOPs) are wastewater treatment methods uses highly reactive SO4•- to degrade organic pollutants. AOPs have high efficiency and are favorable for catalyst recovery and reuse, which have received extensive attention. Our research group is developing new AOP catalysts to treat various antibiotics and other organic substances in wastewater. We are developing cobalt borate (Co2B2O5) as a single-component and efficient photocatalyst to deal with organic pollutants that are hardly to be degraded. This photocatalyst activates the oxidant potassium monopersulfate (PMS) under sunlight irradiation. Drawing on the robust oxidation-reduction properties of PMS, the high redox potential of cobalt, and the unique photochemicalcatalytic activity of metal borates, we investigated the PMS oxidation using cobalt borate as a catalyst. The cobalt borate was prepared by calcining a mixture of cobalt acetate tetrahydrate and boric acid at 800°C for 12 hours. The prepared catalyst demonstrated effective degradation 50 ppm of tetracycline (TC), 40 ppm of 4-nitrophenol (4-NP), and 10 ppm of sulfamethoxazole (SMX) under simulated sunlight radiation in neutral pH conditions in 30 minutes. Furthermore, the experiments conducted in this research also demonstrated the reaction activity of Co2B2O5 has nothing to do with the existence of natural organic matter (NOM) such as chloride ions, nitrate ions, and carbonate ions.

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