磷掺杂碳量子点的制备及活化过一硫酸盐降解亚甲基蓝
收稿日期: 2023-04-17
网络出版日期: 2024-01-18
基金资助
国家自然科学基金项目(21776175)
Preparation of phosphorus-doped carbon quantum dots and activation of peroxymonosulfate for degradation of methylene blue
Received date: 2023-04-17
Online published: 2024-01-18
报道了一种磷掺杂碳量子点（P-CQDs）的方法，用红外光谱（FT-IR）、X射线光电子能谱仪（XPS）、透射电子显微镜（TEM）等对P-CQDs进行了详细表征，结果证实磷成功接入了CQDs。引入磷可以减少CQDs的禁带宽度，从而提高对光的吸收和促进光生电子转移。在可见光照射下，P-CQDs的用量为0.5 g/L、过一硫酸盐（PMS）的浓度为0.4 mmol/L时，10 min内亚甲基蓝（MB）的降解率为99%。考察了P-CQDs用量、PMS浓度和MB浓度等因素对体系降解MB效率的影响。同时，用自由基淬灭实验考察了P-CQDs光催化活化PMS降解MB的机理，结果表明超氧自由基（O2•-）是主要的活性物质。
张利洁 , 李德刚 , 韩文渊 , 徐会君 , 张维民 , 郁宸 . 磷掺杂碳量子点的制备及活化过一硫酸盐降解亚甲基蓝[J]. 无机盐工业, 2024 , 56(1) : 126 -133 . DOI: 10.19964/j.issn.1006-4990.2023-0218
A phosphorus-doped carbon quantum dots（P-CQDs） method was reported，detailed characterization of P-CQDs was performed by infrared spectroscopy（FT-IR），X-ray photoelectron spectroscopy（XPS），and transmission electron microscopy（TEM），and the results confirmed that phosphorus was successfully accessed CQDs.The introduction of phosphorus could reduce the forbidden band width of CQDs，thus improving the absorption of light and promoting photogenerated electron transfer.Under visible light irradiation，the degradation of MB was 99% in 10 min at the PMS concentration of 0.4 mmol/L at the P-CQDs dosage of 0.5 g/L.The effects of P-CQDs dosage，PMS concentration and MB concentration on the system degradation efficiency of MB were investigated.Meanwhile，the mechanism of MB degradation by P-CQDs photocatalytically activated PMS was investigated by free radical burst experiments，and the results showed that superoxide radical（O2•-） was the main active substance.
| 1 | CHETHANA M， SOROKHAIBAM L G， BHANDARI V M，et al.Green approach to dye wastewater treatment using biocoagulan-ts［J］.ACS Sustainable Chemistry & Engineering，2016，4（5）：2495-2507. |
| 2 | ZHOU Minghong， WANG Tianqi， HE Zidong，et al.Synthesis of yolk-shell magnetic porous organic nanospheres for efficient removal of methylene blue from water［J］.ACS Sustainable Chemistry & Engineering，2019，7（3）：2924-2932. |
| 3 | HE Qi， LIAO Xiaogang， LI Gang，et al.Synthesis of cubic Mn2O3 and its catalytic performance in activating peroxymonosulfate for degradation of MB［J］.Chemical Physics，2023，571：111912. |
| 4 | ZHENG Yuzhen， XUE Huijun， SUN Bo，et al.The altered effects of chloride on the treatment efficiency of SO4?--based AOPs by other background water constituents［J］.Chemical Engineering Jo- urnal，2022，441：135914. |
| 5 | 夏强，廖小刚，李纲.化学浴沉积法制备氢氧化镍及其催化过一硫酸盐降解亚甲基蓝［J］.无机盐工业，2021，53（10）：119- 124. |
| XIA Qiang， LIAO Xiaogang， LI Gang.Degradation of methylene blue by catalytic peroxymonosulfate with Ni（OH）2 synthesized through chemical bath deposition method［J］.Inorganic Chemicals Industry，2021，53（10）：119-124. | |
| 6 | QI Chengdu， LIU Xitao， MA Jun，et al.Activation of peroxymonosulfate by base：Implications for the degradation of organic pollutants［J］.Chemosphere，2016，151：280-288. |
| 7 | ADIL S， KIM W S， KIM T H，et al.Defective，oxygen-functionalized multi-walled carbon nanotubes as an efficient peroxymonosulfate activator for degradation of organic pollutants［J］.Journal of Hazardous Materials，2020，396：122757. |
| 8 | HE Yanfei， CHENG Kai， ZHONG Zitao，et al.Simultaneous labeling and multicolor fluorescence imaging of multiple immune cells on liver frozen section by polychromatic quantum dots below freezing points［J］.Journal of Colloid and Interface Science，2023，636：42-54. |
| 9 | JIANG Jingjie， YE Gang， WANG Zhe，et al.Heteroatom-doped carbon dots（CDs） as a class of metal-free photocatalysts for PET-RAFT polymerization under visible light and sunlight［J］.Angewandte Chemie，2018，130（37）：12213-12218. |
| 10 | HU Shengliang， TIAN Ruixue， DONG Yingge，et al.Modulation and effects of surface groups on photoluminescence and photocatalytic activity of carbon dots［J］.Nanoscale，2013，5（23）：11665-11671. |
| 11 | DONG Yongqiang， ZHOU Nana， LIN Xiaomei，et al.Extraction of electrochemiluminescent oxidized carbon quantum dots from activated carbon［J］.Chemistry of Materials，2010，22（21）：5895-5899. |
| 12 | YUAN Lin， LIN Weiying， ZHENG Kaibo，et al.FRET-based small-molecule fluorescent probes：Rational design and bioimaging applications［J］.Accounts of Chemical Research，2013，46（7）：1462-1473. |
| 13 | HAN Wenyuan， LI Degang， ZHANG Manqi，et al.Photocataly-tic activation of peroxymonosulfate by surface-tailored carbon quantum dots［J］.Journal of Hazardous Materials，2020，395： 122695. |
| 14 | LIN Liangliang， YIN Yijian， LI Ziyang，et al.Continuous microflow synthesis of fluorescent phosphorus and nitrogen co-doped carbon quantum dots［J］.Chemical Engineering Research and Design，2022，178：395-404. |
| 15 | MING Hongbo， ZHANG Peiyun， YANG Yang，et al.Tailored poly-heptazine units in carbon nitride for activating peroxymonosulfate to degrade organic contaminants with visible light［J］.Applied Catalysis B：Environmental，2022，311：121341. |
| 16 | ZHANG Chen， QIN Deyu， ZHOU Yin，et al.Dual optimization approach to Mo single atom dispersed g-C3N4 photocatalyst：Morphology and defect evolution［J］.Applied Catalysis B：Environmental，2022，303：120904. |
| 17 | FAN Jinhong， QIN Hehe， JIANG Simin.Mn-doped g-C3N4 composite to activate peroxymonosulfate for acetaminophen degradation：The role of superoxide anion and singlet oxygen［J］.Chemical Engineering Journal，2019，359：723-732. |
| 18 | LEE H， KIM H I， WEON S，et al.Activation of persulfates by graphitized nanodiamonds for removal of organic compounds［J］.Environmental Science & Technology，2016，50（18）：10134-10142. |
| 19 | LIU Zeyu， LU Tian， CHEN Qinxue.An sp-hybridized all-carboatomic ring，cyclo［18］carbon：Electronic structure，electronic spectrum，and optical nonlinearity［J］.Carbon，2020，165：461- 467. |
| 20 | MAO Shuai， ZHAO Peng， WU Yi，et al.Promoting charge migration of Co（OH）2/g-C3N4 by hydroxylation for improved PMS activation：Catalyst design，DFT calculation and mechanism analy-sis［J］.Chemical Engineering Journal，2023，451：138503. |
| 21 | LU Tian， CHEN Feiwu.Multiwfn：A multifunctional wavefunction analyzer［J］.Journal of Computational Chemistry，2012，33（5）：580-592. |
/
| 〈 |
|
〉 |
