化工进展 ›› 2024, Vol. 43 ›› Issue (8): 4403-4410.DOI: 10.16085/j.issn.1000-6613.2023-1264
• 工业催化 • 上一篇
付涛1(), 李立2, 高莉宁2(), 朱富维3, 曹炜烨3, 陈华鑫2
收稿日期:
2023-07-23
修回日期:
2023-08-28
出版日期:
2024-08-15
发布日期:
2024-09-02
通讯作者:
高莉宁
作者简介:
付涛(1982—),男,硕士,高级工程师。E-mail:25068124@qq.com。
基金资助:
FU Tao1(), LI Li2, GAO Lining2(), ZHU Fuwei3, CAO Weiye3, CHEN Huaxin2
Received:
2023-07-23
Revised:
2023-08-28
Online:
2024-08-15
Published:
2024-09-02
Contact:
GAO Lining
摘要:
通过对石墨相氮化碳(g-C3N4)和氧化硼(B2O3)进行高温煅烧制备硼元素掺杂改性石墨相氮化碳(BCN),对其微观结构、形貌和光学特性进行表征。再以多孔水泥混凝土为光催化剂载体,研究掺杂g-C3N4和BCN的水泥基材料的力学性能和光催化降解NO性能。结果表明,B元素的引入会增大g-C3N4比表面积,改善水泥基材料对可见光的吸收,对NO的降解率达到40.7%。当掺杂BCN的质量分数达到水泥的6%时,水泥混凝土的7d抗压强度和28d抗压强度均达到最佳,分别为8.25MPa和14.4MPa;在可见光照射条件下,7d和28d光催化降解性能均达到最佳,分别为47%和63%。
中图分类号:
付涛, 李立, 高莉宁, 朱富维, 曹炜烨, 陈华鑫. 水泥基硼掺杂石墨相氮化碳降解NO[J]. 化工进展, 2024, 43(8): 4403-4410.
FU Tao, LI Li, GAO Lining, ZHU Fuwei, CAO Weiye, CHEN Huaxin. Cement-based boron-doped graphite phase carbon nitride material degrades NO[J]. Chemical Industry and Engineering Progress, 2024, 43(8): 4403-4410.
化学成分 | 质量分数/% |
---|---|
CaO | 62.21 |
SiO2 | 21.55 |
Al2O3 | 7.82 |
Fe2O3 | 4.51 |
SO3 | 2.11 |
MgO | 1.80 |
表1 水泥的主要化学成分
化学成分 | 质量分数/% |
---|---|
CaO | 62.21 |
SiO2 | 21.55 |
Al2O3 | 7.82 |
Fe2O3 | 4.51 |
SO3 | 2.11 |
MgO | 1.80 |
筛孔/mm | 通过率/% |
---|---|
2.36 | 0 |
4.75 | 6.5 |
9.50 | 85.7 |
13.00 | 100.0 |
表3 粗骨料的级配设计表[26]
筛孔/mm | 通过率/% |
---|---|
2.36 | 0 |
4.75 | 6.5 |
9.50 | 85.7 |
13.00 | 100.0 |
体积流量/L·min-1 | 光照强度/W | 相对湿度/% | 检测时间 |
---|---|---|---|
1 | 16 | 50 | 10min,共2h |
表4 光催化降解实验参数
体积流量/L·min-1 | 光照强度/W | 相对湿度/% | 检测时间 |
---|---|---|---|
1 | 16 | 50 | 10min,共2h |
样品 | 比表面积/m2·g-1 |
---|---|
g-C3N4 | 4.8820 |
BCN | 5.7249 |
表5 改性前后g-C3N4比表面积
样品 | 比表面积/m2·g-1 |
---|---|
g-C3N4 | 4.8820 |
BCN | 5.7249 |
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