收稿日期: 2024-12-13
网络出版日期: 2025-04-27
基金资助
乌梁素海流域山水林田湖草生态保护修复试点工程支持计划项目子项目(2019HYYSZX);内蒙古自治区教育科学研究“十四五”规划课题项目(NGJGH2021483);内蒙古自治区高等学校科学研究项目(NJZY21190);河套学院创新培育团队项目(HTKCT-B202411)
Study on degradation of organic pollutants by C3N5/Montmorillonite cement coating on concrete surface
Received date: 2024-12-13
Online published: 2025-04-27
活性中心富氮氮化碳（C3N5）负载到蒙脱石MK30表面原位制备得到C3N5/MK30光催化剂。通过X射线衍射（XRD）、傅里叶红外光谱（FT-IR）、X射线光电子能谱（XPS）、紫外可见漫反射光谱（UV-vis DRS）、光致发光光谱（PL）和电化学交流阻抗谱（EIS）等手段表征了光催化剂的晶型、官能团、元素组成、光谱响应、光电子-空穴复合和电荷传质阻力等。结果表明，MK30作为载体负载后有效促进了C3N5光电子-空穴的分离，电荷转移速率提高，可见光照射60 min实现了对四环素（TC）溶液的高效降解，降解率达到了97.15%，回收C3N5/MK30光催化剂循环使用仍然表现出良好的活性。通过水泥涂层的形式将C3N5/MK30光催化剂涂覆到混凝土表面，C3N5/MK30掺入量为6.5%（质量分数）时表现出最佳的光催化活性。6.5%C3N5/MK30光催化涂层实现了对表面25 mL质量浓度为200 mg/L的TC溶液最高的降解率（92.96%），水泥涂层用高压水枪冲刷干燥后继续循环使用仍表现出91.72%的较高降解率。C3N5/MK30起到了“晶核”的作用促进了水泥的水化和水化产物的生成，生成的大量水化产物可以有效填充孔隙，使得混凝土基体和水泥涂层之间结合更加紧密，使得养护7、28 d混凝土抗压强度分别提高了20.53%和9.26%。
徐珊珊 , 王文达 , 李生勇 , 徐红梅 . 混凝土表面C3N5/蒙脱石水泥涂层降解有机污染物性能研究[J]. 无机盐工业, 2025 , 57(10) : 129 -138 . DOI: 10.19964/j.issn.1006-4990.2024-0675
Nitrogen-rich carbon nitride（C3N5） was loaded on the surface of montmorillonite MK30 to prepare C3N5/MK30 photocatalyst in situ.The crystal form，functional groups，elemental composition，spectral response，photoelectron-hole recombination and charge transfer resistance of the photocatalyst were characterized by X-ray diffraction（XRD），fourier transform infrared spectroscopy（FT-IR），X-ray photoelectron spectroscopy（XPS），UV-visible diffuse reflectance spectrometry（UV-vis DRS），photoluminescence spectra（PL） and electrochemical impedance spectroscopy（EIS）.The results showed that the loading of MK30 as a carrier effectively promoted the separation of C3N5 photoelectron-holes，and the charge transfer rate was improved.The efficient degradation of tetracycline（TC） solution was achieved under visible light irradiation for 60 min，and the degradation rate reached 97.15%.The recycled C3N5/MK30 photocatalyst still showed good activity.The C3N5/MK30 photocatalyst was coated on the surface of concrete in the form of cement coating，and the best photocatalytic activity was shown when the mass fraction was 6.5%.The C3N5/MK30 photocatalytic coating achieved a maximum degradation rate of 92.96% for 25 mL of TC solution with a mass concentration of 200 mg/L on the surface.The cement coating still showed a high degradation rate of 91.72% after scouring and drying by high-pressure water gun.The loading of C3N5/MK30 played a role of crystal nucleus to promote the hydration of cement and the formation of hydration products.The generated large amount of hydration products could effectively fill the pores，making the bonding between the concrete matrix and the cement coating closer.The compressive strength of concrete cured for 7 and 28 d was increased by 20.53% and 9.26%，respectively.
| [1] | YAGHMOUR E， QAMAR M ABU， NAITO C，et al.Pressure drop and heat transfer properties for normal weight and lightweight pervious concrete［J］.Construction and Building Materials，2024，425：135947. |
| [2] | KHAN M A， AHMAD J， KHAN H A，et al.High strength rubberized porous concrete for sustainable pavements：Engineering properties and life cycle assessment［J］.Journal of Cleaner Production，2024，451：142012. |
| [3] | 赵文璞，赵晓东，季惠明，等.SiO2/g-C3N4复合材料的3D打印制备及对染料废水的处理性能［J］.工业水处理，2024，44（3）：64-73. |
| ZHAO Wenpu， ZHAO Xiaodong， JI Huiming，et al.Preparation of SiO2/g-C3N4 composite material by 3D printing and its treatment properties for wastewater containing dyes［J］.Industrial Water Treatment，2024，44（3）：64-73. | |
| [4] | 左广玲，王明辉，彭云颖，等.蜂巢状LaVO4/Bi2O3异质结光催化降解盐酸四环素的研究［J］.无机盐工业，2024，56（11）：158- 164. |
| ZUO Guangling， WANG Minghui， PENG Yunying，et al.Study on hnoneycomb-like LaVO4/Bi2O3 heterojunction for photocatalytic degradation of tetracycline hydrochloride［J］.Inorganic Chemicals Industry，2024，56（11）：158-164. | |
| [5] | 韩龙，刘思乐，张申奥，等.SnS2/C3N5光催化剂的制备及其对亚甲基蓝的光催化降解［J］.印染，2025，51（1）：10-14. |
| HAN Long， LIU Sile， ZHANG Shen′ao，et al.Preparation of SnS2/C3N5 photocatalyst and its photocatalytic degradation of Methylene Blue［J］.China Dyeing & Finishing，2025，51（1）：10-14. | |
| [6] | ZHANG Junlei， TAO Hengcong， WU Shanshan，et al.Enhanced durability of nitric oxide removal on TiO2（P25） under visible light：Enabled by the direct Z-scheme mechanism and enhanced structure defects through coupling with C3N5 ［J］.Applied Catalysis B：Environmental，2021，296：120372. |
| [7] | LONG Jieqing， WEI Liang， HUANG Haizan，et al.Facile fabrication of biochar-coupled g-C3N5/C and its enhanced photocatalytic properties［J］.Journal of Physics and Chemistry of Solids，2022，171：111029. |
| [8] | MA Zhanqiang， GUO Wei， ZHANG Kaiyue，et al.Liquid exfoliation of bulk g-C3N5 to nanosheets for improved photocatalytic antibacterial activity［J］.Environmental Science and Pollution Research，2023，30（26）：69486-69498. |
| [9] | YIN Hongfei， YUAN Chunyu， LV Huijun，et al.The interface design of（0D/2D/1D） AgI/BiOI/C3N5 dual Z-scheme heterostructures with efficient visible-light-driven photocatalytic activity［J］.Separation and Purification Technology，2023，308：122815. |
| [10] | LIU Tianyu， YANG Guojiang， WANG Wei，et al.Preparation of C3N5 nanosheets with enhanced performance in photocatalytic methylene blue（MB） degradation and H2-evolution from water splitting［J］.Environmental Research，2020，188：109741. |
| [11] | LIAO Wenning， YANG Zhiquan， WANG Ying，et al.Novel Z-scheme Nb2O5/C3N5 photocatalyst for boosted degradation of tetracycline antibiotics by visible light-assisted activation of persulfate system［J］.Chemical Engineering Journal，2023，478：147346. |
| [12] | ZHANG Hongda， ZHAO Yunzhe， XU Guanghui，et al.Photocatalytic activation of sodium percarbonate by C3N5/C2N3 homojunction for rapid water purification：Efficient electron transfer of built-in electric field［J］.Chemical Engineering Journal，2024，491：151885. |
| [13] | 李俊，马丹丹，邹雅珺，等.石墨相氮化碳的改性及其在光催化中的应用进展［J］.中国材料进展，2024，43（7）：565-578， 626. |
| LI Jun， MA Dandan， ZOU Yajun，et al.The modification of graphite carbon nitride and its applications in photocatalysis［J］.Materials China，2024，43（7）：565-578，626. | |
| [14] | SHI Xiulong， Biyang TUO， GAN Cheng，et al.Removal of organic dye by Ti-doped Bi2O3/MMT with enhanced visible-light photocatalytic activity［J］.Journal of Electronic Materials，2024，53（10）：6076-6089. |
| [15] | HOU Mengyao， MIAO Baoji， ASAD M，et al.Efficient photocatalytic degradation of aqueous organic pollutants by using an advanced TiO2/Ti3C2/montmorillonite composites［J］.Journal of Alloys and Compounds，2024，976：173362. |
| [16] | RAJESH A， MADHUMITHA G.Phyto-mediated synthesis of AgFeO2/MK30 nanocomposite using the ultrasonication method and its photocatalytic behavior and antibacterial studies［J］.Inorganic Chemistry Communications，2024，160：111907. |
| [17] | 贺晓宇.基于氮化碳的光催化水泥混凝土制备与性能研究［J］.公路，2020，65（10）：292-296. |
| HE Xiaoyu.Preparation and properties of photocatalytic cement concrete based on carbon nitride［J］.Highway，2020，65（10）：292-296. | |
| [18] | 林元明，林佳福，熊晓立，等.TiO2改性钢渣基透水混凝土的力学和NO x 降解性能研究［J］.硅酸盐通报，2024，43（1）：191- 199. |
| LIN Yuanming， LIN Jiafu， XIONG Xiaoli，et al.Mechanical and NO x degradation performance of TiO2 modified steel slag-based permeable concrete［J］.Bulletin of the Chinese Ceramic Society，2024，43（1）：191-199. | |
| [19] | HOU Shutong， GAO Yan， SONG Peng，et al.Synthesis of Pd-modified Fe3O4 loaded on montmorillonite catalyst for photocatalytic degradation of tetracycline［J］.Inorganic Chemistry Communications，2024，159：111745. |
| [20] | PENG Kang， ZUO Linjie， WANG Yihan，et al.Boosting photocatalytic hydrogen evolution over CdS/MoS2 on the graphene/mo-ntmorillonite composites［J］.Applied Clay Science，2023，236：106855. |
| [21] | ACHEAMPONG E O， WANG Ke， LV Rui，et al.Montmorillonite-based photoresponsive microcapsules for efficient removal of chromium［J］.Journal of Radioanalytical and Nuclear Chemistry，2023，332：3675-3686. |
| [22] | ZHU Bicheng， XIA Pengfei， Wingkei HO，et al.Isoelectric point and adsorption activity of porous g-C3N4 ［J］.Applied Surface Science，2015，344：188-195. |
| [23] | 唐贝.ZnO/g-C3N4异质结光催化材料的制备及对吡啶的降解［J］.无机盐工业，2024，56（4）：133-142. |
| TANG Bei.Preparation of ZnO/g-C3N4 heterojunction photocatalytic material and its degradation of pyridine［J］.Inorganic Che-Industry micals，2024，56（4）：133-142. | |
| [24] | 岳攀红，王泽华，杨洁，等.CeO2/g-C3N4复合光催化剂的制备及其可见光催化性能［J］.环境科学与技术，2023，46（9）：18-26. |
| YUE Panhong， WANG Zehua， YANG Jie，et al.Visible light composite photocatalyst CeO2/g-C3N4：Its preparation and performance［J］.Environmental Science & Technology，2023，46（9）：18-26. | |
| [25] | 马晓佳，马同宇，赵益华，等.宽泛条件下光催化降解四环素的C3N4/TiO2复合材料的性能研究［J］.环境化学，2023，42（11）：3789-3800. |
| MA Xiaojia， MA Tongyu， ZHAO Yihua，et al.Study on the properties of C3N4/TiO2 composites capable of photocatalytic tetracycline degradation under a wide range of conditions［J］.Environmental Chemistry，2023，42（11）：3789-3800. | |
| [26] | BI Kejun， WANG Meng， LI Haoyu.Synthesis of S scheme 2D/2D g-C3N5/g-C3N4 heterojunction for photocatalytic degradation tetracycline［J］.Surfaces and Interfaces，2024，50：104487. |
| [27] | 杨忠雪，陈建军，王荣荣，等.Ag/多孔g-C3N4复合光催化剂的制备及其降解四环素性能［J］.化学研究与应用，2022，34（2）：335-340. |
| YANG Zhongxue， CHEN Jianjun， WANG Rongrong，et al.Preparation of Ag/porous g-C3N4 composite photocatalyst and its degradation performance of tetracycline［J］.Chemical Research and Application，2022，34（2）：335-340. | |
| [28] | 卜义夫，刘思乐，宋丹丹，等.废旧涤纶基活性炭负载g-C3N4光催化剂的制备及其对亚甲基蓝的光催化降解［J］.毛纺科技，2023，51（2）：40-48. |
| BU Yifu， LIU Sile， SONG Dandan，et al.Preparation of waste polyester-based activated carbon loaded g-C3N4 photocatalyst and its photocatalytic degradation of methylene blue［J］.Wool Textile Journal，2023，51（2）：40-48. | |
| [29] | 赵博，夏静芬，杨国靖，等.Bi2MoO6/AgBr的制备及其光催化活性增强机制［J］.中国给水排水，2022，38（1）：23-30. |
| ZHAO Bo， XIA Jingfen， YANG Guojing，et al.Preparation of Bi2MoO6/AgBr and its photocatalytic activity enhancement mech- | |
| anism［J］.China Water & Wastewater，2022，38（1）：23-30. | |
| [30] | 吴林松，王星之，梅梦君，等.TiO2透水混凝土配合比设计和光催化性能［J］.长江科学院院报，2023，40（12）：188-192， 198. |
| WU Linsong， WANG Xingzhi， MEI Mengjun，et al.Mix proportion design and photocatalytic performance of TiO2 modified pervious concrete［J］.Journal of Changjiang River Scientific Research Institute，2023，40（12）：188-192，198. | |
| [31] | ZHANG Yunchao， ZHOU Yijun， DONG Xiyuan，et al.Recent advances in TiO2-based photocatalytic concrete：Synthesis strategies，structure characteristics，multifunctional applications，and CFD simulation［J］.Chemical Engineering Journal，2024，496：154186. |
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