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第 4 期 赵文霞,等: 氮气低温等离子体辅助制备 N-TiO 2 及其光催化活性 ·757·
但性能高低顺序未发生改变。光催化性能最好的仍
是 N-TiO 2 (LTP+C),降解率为 78%。
参考文献:
[1] SAQIB N, ADNAN R, SHAH I. A mini-review on rare earth
metal-doped TiO 2 for photocatalytic remediation of wastewater[J].
Environmental Science and Pollution Research, 2016, 23(16): 15941-
15951.
[2] WANG Xiaoqian (王晓倩), HAO Liansheng (郝连生), SHANG Hao
(尚昊), et al. Photocatalytic degradation of brilliant blue by TiO 2[J].
Journal of Qingdao Technological University (青岛理工大学学报),
2019, 40(1): 88-91.
[3] FANG Yiwen (方奕文), YU Lin (余林), YE Fei (叶飞), et al.
图 11 可见光降解 MO 动力学曲线的线性拟合图 Synthesis, characterization and photocatalytic performance of
Fig. 11 Linear fitting curves of visible light degradation MO Ag-modified TiO 2 catalysis for the degradation of gas phase toluene[J].
Journal of Molecular Catalysis (分子催化), 2011, 25(6): 569-573.
[4] LEVINSON R, BERDAHL P, AKBARI H. Solar spectral optical
表 2 可见光降解甲基橙的线性回归系数及表观速率常数 properties of pigments-Part I: Model for deriving scattering and
Table 2 Linear regression coefficients and apparent rate absorption coefficients from transmittance and reflectance
constants of visible light degradation of MO measurements[J]. Solar Energy Materials and Solar Cells, 2005,
89(4): 319-349.
2
–1
光催化剂 R k app/min [5] LI Zhaoyu (李朝玉), LI Jun (李俊). Study on nitrogen plasma
N-TiO 2(C) 0.95137 0.00243 modified titanium dioxide[J]. Journal of Wuhan Engineering University
(武汉工程大学学报), 2010, 32(12): 32-34, 87.
N-TiO 2(C+LTP) 0.98839 0.00470 [6] REN Baixiang (任百祥), ZHU Lin (朱琳). Optimization of carbon-
N-TiO 2(LTP+C) 0.99514 0.01090 modified titanium dioxide visible light degradation of azo dye methyl
orange by response surface methodology[J]. Journal of Jilin Normal
University (Natural Science Edition) 〔吉林师范大学学报(自然科
从图 11 和表 2 可以看出,–ln(C t /C 0 )与时间 学版)〕, 2019, 40(1): 95-100.
[7] XIAO Yingguan (肖颖冠), SUN Xiaodong (孙孝东), LI Linyi (李霖
呈良好的线性关系,即满足光催化假一级动力学 昱), et al. Synchronous synthesis of carbon-nitrogen co-modified
方程。 hollow titanium dioxide photocatalyst and its efficient photocatalytic
behavior and cyclic stability[J]. Journal of Catalysis (催化学报),
C 2019, 40(5): 170-180.
ln t k app t (2) [8] SATO S, WHITE J M. Photo decomposition of water over Pt/TiO 2
C 0 catalysts[J]. Chemical Physics Letters, 2010, 72(1): 83-86.
–1
式中:t 为降解时间,min;k app 为表观速率常数,min 。 [9] ZENG Jiesheng (曾杰生), WANG Ruibin (王瑞彬), HE Lei (何蕾).
Research progress of TiO 2 photocatalyst modification[J]. New
3 种 N-TiO 2 降解甲基橙溶液的相关系数分别为 Chemical Materials (化工新型材料), 2018, 46(3): 27-33.
[10] LEE H, LEEY K, HWANG E, et al. Enhanced surface plasmon effect
0.95137 、 0.98839 和 0.99514 ,符 合 Langmiur-
of Ag/TiO 2 nanodiodes on internal photo emission[J]. Journal of
Hinshewood 动 力学模型 [29] 。 N-TiO 2 (LTP+C) 和 Physical Chemistry C, 2014, 118(11): 5650-5656.
[11] LI Xin (李欣). Synthesis of titanium dioxide based composites and
N-TiO 2 (C+LTP)的表观速率常数分别是 N-TiO 2 (C)的 their visible light photocatalytic properties[D]. Harbin: Harbin
4.5 倍和 1.9 倍,且 N-TiO 2 (LTP+C)的光催化性能是 Normal University (哈尔滨师范大学), 2016. DOI:10.7666/d.D831100.
[12] ZHU Wenhao (祝文豪). Preparation of TiO 2 nanocomposites and
最高的。 their photocatalytic properties[D]. Hangzhou: Zhejiang Institute of
Technology (浙江理工大学), 2017. DOI:CNKI:CDMD:2.1017.059633.
3 结论 [13] DONG Kun (董堃). Preparation of N-doped TiO 2 composite nano-
Photocatalyst and its application in degradation of dyeing wastewater[D].
Beijing: Beijing Jianzhu University (北京建筑大学), 2017. DOI:
(1)与单纯煅烧相比,N 2 等离子体辅助制备 CNKI:CDMD:2.1017.169641.
[14] ZHOU T, JANG K, JANG W L. Ionic liquid and plasma effects on
N-TiO 2 可有效提高 N 元素在光催化剂表面的分散 SiO 2 supported Pd for selective hydrogenation of acetylene[J].
性,使晶粒尺寸变小,提高了 N 元素的掺入量和对可 Catalysis Today, 2013, 211: 147-155.
[15] ZHANG C, ZHOU Y, SHAO T, et al. Hydrophobic treatment on
见光的吸收响应性,但不改变 TiO 2 原有的晶型结构。 polymethyl methacrylate surface by nanosecond-pulse DBDs in CF 4 at
(2)三者可见光降解 MO 性能均符合准一级动 atmospheric pressure[J]. Applied Surface Science, 2014, 311: 468-
477.
力学方程,3 种 N-TiO 2 对 MO 的光降解性能由高到低 [16] ZHANG Xiuling, XU Weiwei, DUAN Dongzhi, et al. Atmospheric
依次为 N-TiO 2(LTP+C)>N-TiO 2(C+LTP)>N-TiO 2(C), pressure oxygen cold plasma for synthesizing Au/TiO 2 catalysts:
Effect of discharge voltage and discharge time[J]. IEEE Transactions
其中N-TiO 2(LTP+C)对MO的最大降解率为90%以上。 on Plasma Science, 2018, 46(8): 2776-2781.
(3)先 N 2 氛围等离子体处理后煅烧的处理工艺 [17] DI L, ZHANG X, LEE B, et al. Feasibility of atmospheric-pressure
CO cold plasma for reduction of supported metal ions[J]. Plasma
制得的 N-TiO 2 〔N-TiO 2 (LTP+C)〕的可见光催化性 Chemistry and Plasma Processing, 2017, 37(5): 1-15.
[18] LI Zhuang (李壮), DI Lanbo (底兰波), YU Feng (于锋), et al.
能优于 N-TiO 2 〔N-TiO 2 (C+LTP)〕。 Research progress in cold plasma enhanced preparation of metal
(4)4 种光催化剂经循环使用 3 次后,较原催 catalysts[J]. Journal of Physics (物理学报), 2018, 67(21):40-51.
化剂对甲基橙的可见光降解性能下降了 10%~20%, (下转第 764 页)