Preparation, characterization and photocatalytic activity of novel CeO2 loaded porous alkali-activated steel slag-based binding material
Preparation, characterization and photocatalytic activity of novel CeO2 loaded porous alkali-activated steel slag-based binding material
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新型负载CeO2多孔碱活化钢渣基粘结材料的制备、表征及光催化活性
DOI：
10.1016/j.ijhydene.2017.04.035
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发表时间：
2017-07
影响因子：
7.2
通讯作者：
Zhang Ke
中科院分区：
文献类型：
--
作者：
Kang Le;Zhang Yao Jun;Zhang Li;Zhang Ke
本研究采用浸渍法制备了CeO2负载多孔碱活性钢渣基光催化剂(CeO2-PASSP)，作为一种新型的光催化裂解制氢催化剂。BET结果表明，成孔剂的加入改变了碱激发钢渣基胶结料的孔结构，光催化剂载体的介孔体积增加了70%。X射线衍射仪、透射电子显微镜和高分辨电子显微镜结果表明，碱激发钢渣基胶结材中的主要矿物相为水化硅酸钙。纳米CeO2的粒径约为10 nm，高度分散在光催化剂载体表面。负载量为8wt%CeO2的光催化剂的光致发光强度最弱。8CeO2-PASSP样品在模拟太阳光照射5h时表现出最高的光催化产氢活性(68.64mmo1/g)和产氢速率(13.73mmo1/(g⋅h))，并且长时间暴露在光催化产氢中相当稳定。8CeO2-PASSP样品良好的产氢活性归因于高Sbet、大介孔体积和光催化剂载体中CeO2和FeO活性组分的共同作用。
In the present study, CeO2loaded porous alkali-activated steel slag-based photocatalyst (CeO2-PASSP) as a new catalyst for photocatalytic water-splitting of hydrogen production was prepared via impregnation method. The BET result showed that adding pore-forming agent changed the pore structure of the alkali-activated steel slag-based binding material and the mesoporous volume of photocatalyst carrier increased by 70%. The XRD, TEM and HRTEM results indicated that calcium silicate hydrate was mainly mineral phase in the alkali-activated steel slag-based binding material. CeO2nanoparticles with particle size about 10 nm were highly dispersed on the surface of photocatalyst carrier. The photocatalyst loaded 8 wt% CeO2showed the weakest photoluminescence intensity. 8CeO2-PASSP sample exhibited the highest photocatalytic hydrogen production activity (68.64 mmol/g) and hydrogen generation rate (13.73 mmol/(g⋅h)) in the simulated solar light irradiation for 5 h, and was quite stable after exposure to photocatalytic hydrogen production for a long time. The excellent activity of hydrogen production for 8CeO2-PASSP specimen was ascribed to the co-action of the high SBET, large mesoporous volume and the active components of the CeO2and FeO existed in photocatalyst carrier.
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DOI：
10.1016/s0713-2743(00)80033-1
发表时间：
2000
期刊：
Waste Management Series
影响因子：
--
作者：
H. Motz;J. Geiseler
通讯作者：
H. Motz;J. Geiseler
影响因子：
13.6
作者：
M. Mäkelä;G. Watkins;R. Pöykiö;H. Nurmesniemi;O. Dahl
通讯作者：
M. Mäkelä;G. Watkins;R. Pöykiö;H. Nurmesniemi;O. Dahl
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DOI：
10.1016/s1003-6326(08)60259-9
发表时间：
2009-02-01
影响因子：
4.5
作者：
Huang Shun-hong;Peng Bing;Zhou Li-cheng
通讯作者：
Zhou Li-cheng
影响因子：
13.6
作者：
Tsakiridis, P. E.;Papadimitriou, G. D.;Koroneos, C.
通讯作者：
Koroneos, C.
影响因子：
7.2
作者：
Linen Wu;J. Gong;L. Ge;Changcun Han;Siman Fang;Yongji Xin;Yujing Li;Yan Lu
通讯作者：
Linen Wu;J. Gong;L. Ge;Changcun Han;Siman Fang;Yongji Xin;Yujing Li;Yan Lu