One-Pot Combustion Synthesis of S-Scheme Heterostructured CdS/CdMoO4 Nanoparticles with Tightly Bound Interface for Enhanced Photocatalytic H2O2 Production

被引:1
作者
Feng, Yuanyuan [1 ]
Gao, Meichao [1 ]
Gong, Yunyun [1 ]
Wang, Jianting [1 ]
Wang, Baihui [1 ]
Liu, Yujie [1 ]
Feng, Yuan-Yuan [1 ]
Sun, Changlong [2 ]
机构
[1] Qufu Normal Univ, Univ Shandong Prov, Sch Chem & Chem Engn, Key Lab Catalyt Convers & Clean Energy, Qufu 273165, Peoples R China
[2] Qingdao Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266042, Shandong, Peoples R China
基金
中国国家自然科学基金;
关键词
CdS; CdMoO4; S-schemeheterojunction; nanocomposite; photocatalysis; H2O2; production; FABRICATION; HETEROJUNCTION; PERFORMANCE; NANOTUBES; CARBON;
D O I
10.1021/acsanm.4c06299
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
In this work, a series of CdS/CdMoO4 samples were fabricated using a simple one-pot combustion method. The crystal structure, morphologies, chemical compositions, and optical properties were characterized through XRD, SEM, TEM, XPS, and UV-vis spectra. The photocatalytic test showed that CdS/CdMoO4 composites had the best H2O2 production performance, achieving a rate of 1394.71 mu mol/g/h, which is approximately 2.5 times and 12 times higher than that of pure CdS and CdMoO4, respectively. The significantly improved photocatalytic efficiency can be ascribed to the formation of an S-scheme heterojunction between CdS and CdMoO4. This heterojunction facilitates the efficient separation of charge carriers, thereby inducing high activity for H2O2 formation. Active species trapping experiments revealed that holes (h(+)) and superoxide radicals (<middle dot>O-2(-)) were the primary active species involved in the photocatalytic process. Based on the energy band structures of the CdS/CdMoO4 composites, a possible photocatalytic mechanism was proposed.
引用
收藏
页码:3426 / 3435
页数:10
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