製備纖維素衍伸之氧化銅/碳氣凝膠及其應用於類芬頓程序移除有機染劑

Synthesis of Copper Oxide/Cellulose Carbon Aerogels for Organic Dye Removal in Fenton-like Processes

陳彥文(Yan-Wen Chen)

指導教授 ： 林義峯

中原大學/工學院/化學工程研究所/碩士(2020年)

https://doi.org/10.6840/cycu202000172

摘要

隨著工業的發展及全球人口數的增長，工業水汙染的問題近年來已成為各國所關注的一大議題，其中有機水汙染在各類工業、民生中是一大問題，因此本研究希望以類芬頓程序來解決有機水汙染之議題，因此本研究希望設計出一個適用於類芬頓程序之觸媒並設計出光觸媒反應器以利於達到該目標。
本研究利用成本低廉之低溫鹼性溶劑系統，成功使用纖維素及殼聚醣做為前驅物，佐以氧化銅做為摻雜物使用溶膠-凝膠法成功製備出氧化銅/纖維素氣凝膠，並且經由旋轉塗佈製程將其附載於多孔氧化鋁基板上，將其置於空氣環境下以300 oC鍛燒，使纖維素氣凝膠碳化後成功於多孔Al2O3基板上獲得氧化銅/碳氣凝凝膠，利用氧化銅本身對於氧化劑過氧化氫之高活性，且以氮摻雜碳氣凝膠結構增加其光觸媒之性能，成功設計出一個能在水樣環境為中性環境下、染劑濃度為10 ppm且氧化劑濃度3.5 wt%之光觸媒反應器；而反應器操作參數於光源及反應器距離5 cm、進口流量為5 ml/s且處理水量為600 ml的情況下獲得一個能於40分鐘內將有機汙染物移除，並且能再生使用3次後仍保持穩定的反應效能之反應系統。

關鍵字

氧化銅 ； 纖維素氣凝膠 ； 碳氣凝膠 ； 氮摻雜碳 ； 類芬頓程序

並列摘要

Since industrial development and population growth. The problem of industrial water pollution has become a major concern for various countries in present. Organic water pollution is a major problem in industries and livelihood. Therefore, this study wants to use Fenton-like processes and design a Photocatalyst reactor to solve the problem of organic water pollution.
In this study, Copper Oxide/Cellulose Carbon aerogel (CuO/CCA) was prepared using cellulose, chitosan and copper oxide by low temperature sol-gel method. After that, attach CuO/CCA to the alumina substrate by spin coating process. It was calcined at 300 oC in air atmosphere to carbonize the cellulose aerogel to obtain copper oxide/cellulose carbon aerogel @ alumina substrate (CuO/CCA@Al2O3). CuO/CCA@Al2O3 place in photocatalyst reactor. Utilizes the high activity of copper oxide against oxidant hydrogen peroxide, and the carbon aerogel structure doped with nitrogen increases its photocatalyst performance. Finally, this research successfully designed a system, the water sample parameter in 10 ppm of rhodamine B, 3.5 wt% of hydrogen peroxide and the reactor operating parameters are 5 cm between the light source and the reactor, and the inlet flow rate is 5 ml /s and with a treated water volume of 600 ml, a reaction system capable of removing organic contaminants within 40 minutes, and capable of regenerating 3 times and maintaining stable reaction performance.

並列關鍵字

copper oxide ； cellulose aerogel ； cellulose carbon aerogel ； nitrogen-doped carbon；Fenton-like process

參考文獻

[1] M. Chenje, "The fourth Global Environment Outlook (GEO-4) assessment," Issues in Global Water System Research, 2007.

[2] L. N. O. Behind, "The United Nations World Water Development Report."

[3] "United Nations Food and Agricultural Organization," 2011.

[4] "工業與技術研究院環境與衛生技術發展中心," 2002.

[5] F. Lu and D. Astruc, "Nanocatalysts and other nanomaterials for water remediation from organic pollutants," Coordination Chemistry Reviews, vol. 408, p. 213180, 2020.