Composites of W18O49 Nanowires with g-C3N4/RGO Nanosheets for Broadband Light-Driven Photocatalytic Wastewater Purification

被引:11
作者
Dou, Yanting [1 ]
Gao, Yu [1 ]
Gu, Deng [2 ]
Zheng, Jiqi [1 ]
Zhang, Bo [1 ]
Li, Xiuxin [1 ]
He, Meijia [1 ]
Zou, Qinglong [1 ]
Liao, Tiaoli [1 ]
Ding, Fu [2 ]
Sun, Yaguang [2 ]
Xu, Zhenhe [1 ]
机构
[1] Dalian Univ, Coll Environm & Chem Engn, Dalian 116622, Liaoning, Peoples R China
[2] Shenyang Univ Chem Technol, Key Lab Inorgan Mol Based Chem Liaoning Prov, Shenyang 110142, Peoples R China
关键词
REDUCED GRAPHENE OXIDE; HEXAGONAL SNS2 NANOSHEETS; Z-SCHEME; ELECTRON MEDIATOR; HETEROJUNCTION; TIO2; H-2; CONSTRUCTION; NANOFIBERS; PLASMON;
D O I
10.1021/acs.langmuir.3c02640
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Developing a photocatalyst that can effectively utilize the full solar spectrum remains a high-priority objective in the ongoing pursuit of efficient light-to-chemical energy conversion. Herein, the ternary nanocomposite g-C3N4/RGO/W18O49 (CN/RGO/WO) was constructed and characterized by a variety of techniques. Remarkably, under the excitation of photon energies ranging from the ultraviolet (UV) to the near-infrared (NIR) region, the photocatalytic performance of the CN/RGO/WO nanocomposite exhibited a significant enhancement compared with single component g-C3N4 or W18O49 nanosheets for the degradation of methyl orange (MO). The MO photodegradation rate of the optimal CN/1.0 wt% RGO/45.0 wt% WO catalyst reached 0.816 and 0.027 min(-1) under UV and visible light excitation, respectively. Even under low-energy NIR light, which is not sufficient to excite g-C3N4, the MO degradation rate can still reach 0.0367 h(-1), exhibiting a significant enhancement than pure W18O49. The outstanding MO removal rate and stability were demonstrated by CN/RGO/WO nanocomposites, which arise from the synergistic effect of localized surface plasmon resonance effect induced by W18O49 under vis-NIR excitation and the Z-scheme nanoheterojunction of W18O49 and g-C3N4. In this work, we have exploited the great potential of integrating nonmetallic plasmonic nanomaterials and good conductor RGO to construct high-performance g-C3N4-based full-solar spectral broadband photocatalysts.
引用
收藏
页码:17947 / 17958
页数:12
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