Volume 40 Issue 9
Sep.  2023
Turn off MathJax
Article Contents
XU Kaixuan, KANG Yulong, GAO Xiaoming, et al. Preparation of S-type heterojunction N-C3N4/BiOClxI1−x with internal electric field and enhanced photocatalytic properties[J]. Acta Materiae Compositae Sinica, 2023, 40(9): 5134-5144. doi: 10.13801/j.cnki.fhclxb.20221209.002
Citation: XU Kaixuan, KANG Yulong, GAO Xiaoming, et al. Preparation of S-type heterojunction N-C3N4/BiOClxI1−x with internal electric field and enhanced photocatalytic properties[J]. Acta Materiae Compositae Sinica, 2023, 40(9): 5134-5144. doi: 10.13801/j.cnki.fhclxb.20221209.002

Preparation of S-type heterojunction N-C3N4/BiOClxI1−x with internal electric field and enhanced photocatalytic properties

doi: 10.13801/j.cnki.fhclxb.20221209.002
Funds:  Natural Science Foundation of Shaanxi Province (2022 QFY07-03)
  • Received Date: 2022-10-17
  • Accepted Date: 2022-11-26
  • Rev Recd Date: 2022-11-20
  • Available Online: 2022-12-12
  • Publish Date: 2023-09-15
  • N doped carbon nitride (N-C3N4)/BiOClxI1−x S-type heterojunctions were prepared by a facile one-step hydrothermal method. The crystal form, morphology, structure, elemental composition, surface functional groups and optical properties of the samples were characterized by XRD, XPS, SEM, TEM, FTIR and UV-Vis. The photocatalytic activity of N-C3N4/BiOClxI1−x oxidation of organic pollutants and reduction of Cr(VI) was investigated. The results show that N-C3N4/BiOClxI1−x sample exhibits the effective enhancement in light absorption. The charge carriers were generated by the transfer of the photoinduced electron from N-C3N4 to BiOClxI1−x across the interface under irradiation, which inhibited the recombination of electron-hole pairs. Under visible light irradiation, 20%N-BiOCl0.5I0.5 exhibited high activity, the degradation rate of phenol reached 98.53% with 2.5 h of visible light irradiation. Meanwhile, the reduction rate of Cr(VI) of 20%N-BiOCl0.5I0.5 reached to 99.11% with 1 h of visible light irradiation. 20%N-BiOCl0.5I0.5 showed good stability after five cycles. The total organic carbon (TOC) removal rate of degradation phenol by 20%N-BiOCl0.5I0.5 within 3 h was 80.21%. Combined with capture experiment, ESR and DFT calculation, the improvement activity of N-C3N4/BiOClxI1−x was attributed to the formation of S-type heterojunction, the internal electric field based on different Fermi levels between N-C3N4 and BiOClxI1−x, as well as band bending and Coulomb force, which together accelerated spatial separation of photogenerated carriers and orderly electron flow.


  • loading
  • [1]
    申久英, 刘碧雯, 赵宇翔, 等. CuS-Bi2WO6/活性纳米碳纤维的制备及其光催化性能[J]. 复合材料学报, 2022, 39(3):1163-1172.

    SHEN Jiuying, LIU Biwen, ZHAO Yuxiang, et al. Preparation and photocatalytic properties CuS-Bi2WO6/carbon nanofibers composites[J]. Acta Materiae Compositae Sinica,2022,39(3):1163-1172(in Chinese).
    李燕, 杨旭光, 曹林林. Bi2S3-BiOCl/煤矸石复合光催化剂的制备及光催化性能[J]. 复合材料学报, 2017, 34(8):1847-1852.

    LI Yan, YANG Xuguang, CAO Linlin. Preparation and photocatalytic properties of Bi2S3-BiOCl/coal gangue compo-site photocatalysts[J]. Acta Materiae Compositae Sinica,2017,34(8):1847-1852(in Chinese).
    MEI J, TAO Y, GAO C, et al. Photo-induced dye-sensitized BiPO4/BiOCl system for stably treating persistent organic pollutants[J]. Applied Catalysis B: Environmental,2021,285:119841. doi: 10.1016/j.apcatb.2020.119841
    JIA T, WU J, JI Z H, et al. Surface defect engineering of Fe-doped Bi7O9I3 microflowers for ameliorating charge-carrier separation and molecular oxygen activation[J]. Applied Catalysis B: Environmental,2021,284:119727. doi: 10.1016/j.apcatb.2020.119727
    CHEN M, BAI R N, JIN P, et al. A facile hydrothermal synthesis of few-layer oxygen-doped g-C3N4 with enhanced visible light-responsive photocatalytic activity[J]. Journal of Alloys and Compounds,2021,869:159292. doi: 10.1016/j.jallcom.2021.159292
    WU S S, YU X, ZHANG J L, et al. Construction of BiOCl/CuBi2O4 S-scheme heterojunction with oxygen vacancy for enhanced photocatalytic diclofenac degradation and nitric oxide removal[J]. Chemical Engineering Journal,2021,411:128555.
    FU J W, XU Q L, LOW J X, et al. Ultrathin 2D/2D WO3/g-C3N4 step-scheme H2-production photocatalyst[J]. Applied Catalysis B: Environmental,2019,243:556-565. doi: 10.1016/j.apcatb.2018.11.011
    ZHANG X, TIAN F Y, LAN X, et al. Building P-doped MoS2/g-C3N4 layered heterojunction with a dual-internal electric field for efficient photocatalytic sterilization[J]. Chemical Engineering Journal,2022,429:132588. doi: 10.1016/j.cej.2021.132588
    CHEN M, GUO C S, HOU S, et al. A novel Z-scheme AgBr/P-g-C3N4 heterojunction photocatalyst: Excellent photocatalytic performance and photocatalytic mechanism for ephedrine degradation[J]. Applied Catalysis B: Environmental,2020,266:118614. doi: 10.1016/j.apcatb.2020.118614
    GUO F R, CHEN J C, ZHAO J Z, et al. Z-scheme heterojunction g-C3N4@PDA/BiOBr with biomimetic polydopamine as electron transfer mediators for enhanced visible-light driven degradation of sulfamethoxazole[J]. Chemical Engineering Journal,2020,386:124014.
    YANG Y J, BIAN Z Y. Oxygen doping through oxidation causes the main active substance in g-C3N4 photocatalysis to change from holes to singlet oxygen[J]. Science of the Total Environment,2021,753:141908. doi: 10.1016/j.scitotenv.2020.141908
    GAO X M, GAO K L, LI X B, et al. Hybrid PDI/BiOCl heterojunction with enhanced interfacial charge transfer for a full-spectrum photocatalytic degradation of pollutants[J]. Catalysis Science & Technology,2020,10(2):372-381.
    YANG Y Q, JI W Q, LI X Y, et al. Insights into the degradation mechanism of perfluorooctanoic acid under visible-light irradiation through fabricating flower-shaped Bi5O7I/ZnO n-n heterojunction microspheres[J]. Chemi-cal Engineering Journal,2021,420:129934. doi: 10.1016/j.cej.2021.129934
    张家晶, 郑永杰, 荆涛, 等. 3D花状 MoS2/O-g-C3N4 Z型异质结增强光催化剂降解双酚A[J]. 复合材料学报, 2022, 39(12):5778-5791.

    ZHANG Jiajing, ZHENG Yongjie, JING Tao, et al. 3D flower-shaped MoS2/O-g-C3N4 Z-type heterojunction enhances the photocatalyst degradation of BPA[J]. Acta Materiae Compositae Sinica,2022,39(12):5778-5791(in Chinese).
    LI X F, ZHANG J F, HUO Y, et al. Two-dimensional sulfur- and chlorine-codoped g-C3N4/CdSe-amine heterostructures nanocomposite with effective interfacial charge transfer and mechanism insight[J]. Applied Catalysis B: Environmental,2021,280:119452.
    ZHANG X L, YUAN N, LI Y, et al. Fabrication of new MIL-53(Fe)@TiO2 visible-light responsive adsorptive photocatalysts for efficient elimination of tetracycline[J]. Chemical Engineering Journal,2022,428:131077. doi: 10.1016/j.cej.2021.131077
    ZHU B C, ZHANG J F, JIANG C J, et al. First principle investigation of halogen-doped monolayer g-C3N4 photocatalyst[J]. Applied Catalysis B: Environmental,2017,207:27-34. doi: 10.1016/j.apcatb.2017.02.020
    刘权锋, 彭炜东, 钟承韡, 等. g-C3N4-Ag/SiO2复合材料光催化降解甲醛的应用[J]. 复合材料学报, 2022, 39(2):628-636.

    LIU Quanfeng, PENG Weidong, ZHONG Chengwei, et al. Application of photocatalytic degradation of formaldehyde by g-C3N4-Ag/SiO2 heterostructure composites[J]. Acta Materiae Compositae Sinica,2022,39(2):628-636(in Chinese).
    HU J D, CHEN D Y, MO Z, et al. Z-scheme 2D/2D heterojunction of black phosphorus/monolayer Bi2WO6 nanosheets with enhanced photocatalytic activities[J]. Angewandte Chemie International Edition,2019,58(7):2073-2077. doi: 10.1002/anie.201813417
    SONG N N, ZHANG S Y, ZHONG S, et al. A direct Z-scheme polypyrrole/Bi2WO6 nanoparticles with boosted photogenerated charge separation for photocatalytic reduction of Cr(VI): Characteristics, performance, and mechanisms[J]. Journal of Cleaner Production,2022,337:130577. doi: 10.1016/j.jclepro.2022.130577
    孙翼飞, 余飞, 袁欢, 等. 具有优异光激发 NO2气敏性能和MB光催化降解效率的 ZnO-MoS2纳米复合材料[J]. 复合材料学报, 2023, 40(6):3428-3440.

    SUN Yifei, YU Fei, YUAN Huan, et al. ZnO-MoS2 nano-composites with excellent light-activated NO2 gas sensitivity and MB photocatalytic degradation efficiency[J]. Acta Materiae Compositae Sinica,2023,40(6):3428-3440(in Chinese).
  • 加载中


    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索


    Article Metrics

    Article views (701) PDF downloads(29) Cited by()
    Proportional views


    DownLoad:  Full-Size Img  PowerPoint