A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance
Abstract In this work, we integrated Ag3PO4 with Bi4Ti3O12 to form Bi4Ti3O12/Ag3PO4 heterojunction nanocomposites by an ion-exchange method. The as-prepared Bi4Ti3O12/Ag3PO4 composites were systematically characterized by means of XRD, SEM, TEM, BET, XPS, UV-vis DRS, EIS, PL spectroscopy, and photoc...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SpringerOpen
2017-11-01
|
| Series: | Nanoscale Research Letters |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s11671-017-2377-1 |
| _version_ | 1797715101275389952 |
|---|---|
| author | Chengxiang Zheng Hua Yang Ziming Cui Haimin Zhang Xiangxian Wang |
| author_facet | Chengxiang Zheng Hua Yang Ziming Cui Haimin Zhang Xiangxian Wang |
| author_sort | Chengxiang Zheng |
| collection | DOAJ |
| description | Abstract In this work, we integrated Ag3PO4 with Bi4Ti3O12 to form Bi4Ti3O12/Ag3PO4 heterojunction nanocomposites by an ion-exchange method. The as-prepared Bi4Ti3O12/Ag3PO4 composites were systematically characterized by means of XRD, SEM, TEM, BET, XPS, UV-vis DRS, EIS, PL spectroscopy, and photocurrent response. SEM, TEM, and XPS results demonstrate the creation of Bi4Ti3O12/Ag3PO4 heterojunction with obvious interfacial interaction between Bi4Ti3O12 and Ag3PO4. PL spectra, EIS spectra, and photocurrent responses reveal that the composites display an enhanced separation efficiency of photogenerated electron-hole pairs, which is due to the charge transfer between Bi4Ti3O12 and Ag3PO4. Rhodamine B (RhB) was chosen as the target organic pollutant to evaluate its degradation behavior over Bi4Ti3O12/Ag3PO4 composites under simulated sunlight irradiation. Compared to bare Bi4Ti3O12 and Ag3PO4 nanoparticles, the composites exhibit a significantly enhanced photocatalytic activity. The highest photocatalytic activity is observed for the 10% Bi4Ti3O12/Ag3PO4 composite with 10% Bi4Ti3O12 content, which is about 2.6 times higher than that of bare Ag3PO4. The photocatalytic mechanism involved was investigated and discussed in detail. |
| first_indexed | 2024-03-12T08:01:53Z |
| format | Article |
| id | doaj.art-595676a9747843db9cb9dc512fbfeb5b |
| institution | Directory Open Access Journal |
| issn | 1931-7573 1556-276X |
| language | English |
| last_indexed | 2024-03-12T08:01:53Z |
| publishDate | 2017-11-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Nanoscale Research Letters |
| spelling | doaj.art-595676a9747843db9cb9dc512fbfeb5b2023-09-02T19:47:16ZengSpringerOpenNanoscale Research Letters1931-75731556-276X2017-11-0112111210.1186/s11671-017-2377-1A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performanceChengxiang Zheng0Hua Yang1Ziming Cui2Haimin Zhang3Xiangxian Wang4State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of TechnologyState Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of TechnologySchool of Science, Lanzhou University of TechnologySchool of Science, Lanzhou University of TechnologySchool of Science, Lanzhou University of TechnologyAbstract In this work, we integrated Ag3PO4 with Bi4Ti3O12 to form Bi4Ti3O12/Ag3PO4 heterojunction nanocomposites by an ion-exchange method. The as-prepared Bi4Ti3O12/Ag3PO4 composites were systematically characterized by means of XRD, SEM, TEM, BET, XPS, UV-vis DRS, EIS, PL spectroscopy, and photocurrent response. SEM, TEM, and XPS results demonstrate the creation of Bi4Ti3O12/Ag3PO4 heterojunction with obvious interfacial interaction between Bi4Ti3O12 and Ag3PO4. PL spectra, EIS spectra, and photocurrent responses reveal that the composites display an enhanced separation efficiency of photogenerated electron-hole pairs, which is due to the charge transfer between Bi4Ti3O12 and Ag3PO4. Rhodamine B (RhB) was chosen as the target organic pollutant to evaluate its degradation behavior over Bi4Ti3O12/Ag3PO4 composites under simulated sunlight irradiation. Compared to bare Bi4Ti3O12 and Ag3PO4 nanoparticles, the composites exhibit a significantly enhanced photocatalytic activity. The highest photocatalytic activity is observed for the 10% Bi4Ti3O12/Ag3PO4 composite with 10% Bi4Ti3O12 content, which is about 2.6 times higher than that of bare Ag3PO4. The photocatalytic mechanism involved was investigated and discussed in detail.http://link.springer.com/article/10.1186/s11671-017-2377-1Bi4Ti3O12 nanoparticlesAg3PO4 nanoparticlesBi4Ti3O12/Ag3PO4 heterojunctionPhotocatalytic performancePhotocatalytic mechanism |
| spellingShingle | Chengxiang Zheng Hua Yang Ziming Cui Haimin Zhang Xiangxian Wang A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance Nanoscale Research Letters Bi4Ti3O12 nanoparticles Ag3PO4 nanoparticles Bi4Ti3O12/Ag3PO4 heterojunction Photocatalytic performance Photocatalytic mechanism |
| title | A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance |
| title_full | A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance |
| title_fullStr | A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance |
| title_full_unstemmed | A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance |
| title_short | A novel Bi4Ti3O12/Ag3PO4 heterojunction photocatalyst with enhanced photocatalytic performance |
| title_sort | novel bi4ti3o12 ag3po4 heterojunction photocatalyst with enhanced photocatalytic performance |
| topic | Bi4Ti3O12 nanoparticles Ag3PO4 nanoparticles Bi4Ti3O12/Ag3PO4 heterojunction Photocatalytic performance Photocatalytic mechanism |
| url | http://link.springer.com/article/10.1186/s11671-017-2377-1 |
| work_keys_str_mv | AT chengxiangzheng anovelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT huayang anovelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT zimingcui anovelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT haiminzhang anovelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT xiangxianwang anovelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT chengxiangzheng novelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT huayang novelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT zimingcui novelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT haiminzhang novelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance AT xiangxianwang novelbi4ti3o12ag3po4heterojunctionphotocatalystwithenhancedphotocatalyticperformance |