氮化碳基纳米复合材料在重金属去除方面研究进展 
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Recent Advances in Carbon Nitride-based Nanomaterials for the Removal of Heavy Metal Ions from Aqueous Solution
1 华北电力大学 环境科学与工程系, 燃煤电站烟气多污染物协同控制实验室, 保定 071003
2 西南科技大学 核废物与环境安全国防重点学科实验室, 绵阳621010
图 & 表
图 1.
Fig. 1. Schematic illustration of the synthesis process of g-C3N4 by thermal polymerization of different precursors
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图 2.
Fig. 2. Different modification strategies of g-C3N4 based materials
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图 3.
Fig. 3. SEM/TEM images and adsorption isotherm results for heavy metal ions(a) Pb(II), Cd(II) and As(V)[31]; (b) Cd(II)[57]; (c) Cu(II)[46]; (d) U(VI)[49]
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图 4.
Fig. 4. Optimized structures and the corresponding bond lengths of (a) pure (g-C3N4)-Pb(II) and (b-g) (S-g-C3N4)-Pb(II) complexes[52]
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表 1
The adsorption of heavy metal ions on g-C3N4-based materials
Table1.
The adsorption of heavy metal ions on g-C3N4-based materials
| g-C3N4-based material | Adsorbate | (m/V)/(g·L-1) | pH | C0/(mg·L-1) | Time/h | T/K | Qmax/(mg·g-1) | Interaction mechanism | Ref. |
|---|
| g-C3N4 | Pb(II) | 3.0 | 3.5 | 20 | 1 | 298 | 282 | Inner-sphere surface complexation | [46] | | Cu(II) | 134 | | Cd(II) | 112 | | Ni(II) | 38 | | Coral reef-like g-C3N4 | Pb(II) | 0.2 | 5 | 10 | 2 | | 720 | Surface complexation | [31] | | Cd(II) | 5 | 480 | | As(V) | 3 | 220 | | g-C3N4/β-CD | Pb(II) | 0.3 | 5.5 | 10 | 20 | 298 | 101 | Complexation and electrostatic interaction | [48] | | S-g-C3N4 | Pb(II) | 0.2 | 4.5 | 10 | 2 | 298 | 53 | Inner-sphere complexation | [52] | | BCN NS | Pb(II) | 0.4 | 7 | 108.0 | 0.7 | 298 | 211 | Electrostatic interaction and molecular interaction | [53] | | Hg(II) | 307.8 | 625 | | Fe3O4&g-C3N4 | Pb(II) | 1 | 6 | 200 | 1 | 298 | 424 | Conjugation | [54] | | GNS | Pb(II) | 1 | 5.1 | | 0.7 | | 407 | Ion exchange | [56] | | Cd(II) | 6.2 | | | 73 | | 2D-g-C3N4 nanosheets | Cd(II) | 0.3 | 7 | 200 | 5 | 318.5 | 94 | π-π conjugate interaction and electrostatic attraction | [57] | | BCN | Cd(II) | 2 | 5 | 11 | 0.2 | | 159 | Complexation | [59] | | OM g-C3N4 | U(VI) | 0.2 | 4 | 10 | 1 | 298 | 150 | Chemisorption | [32] | | l-C3N4/PDA/PEI3 | U(VI) | 0.5 | 5 | 40 | 10 | 298 | 101 | Inner-sphere complexation and surface co-precipitation | [49] |
|
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王祥学, 李星, 王佳琦, 朱洪涛. 氮化碳基纳米复合材料在重金属去除方面研究进展[J]. 无机材料学报, 2020, 35(3): 260. Xiangxue WANG, Xing LI, Jiaqi WANG, Hongtao ZHU. Recent Advances in Carbon Nitride-based Nanomaterials for the Removal of Heavy Metal Ions from Aqueous Solution[J]. Journal of Inorganic Materials, 2020, 35(3): 260.
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