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Z-scheme Bi2O3/CuBi2O4 heterojunction enabled sensitive photoelectrochemical detection of aflatoxin B1 for health care, the environment, and food

文献类型： 外文期刊

作者： Chen, Xiao 1 ; Wu, Wenqin 3 ; Zhang, Qi 3 ; Wang, Cheng 4 ; Fan, Yingying 4 ; Wu, Huimin 1 ; Zhang, Zhaowei 3 ;

作者机构： 1.Hubei Univ, Coll Chem & Chem Engn, Collaborat Innovat Ctr Adv Organ Chem Mat Coconstr, Wuhan 430062, Peoples R China

2.Hubei Univ, Coll Chem & Chem Engn, Key Lab Synth & Applicat Organ Funct Mol, Hubei Key Lab Ferro & Piezoelect Mat & Devices,Min, Wuhan 430062, Peoples R China

3.Chinese Acad Agr Sci, Oil Crops Res Inst, Key Lab Biol & Genet Improvement Oil Crops, Key Lab Detect Mycotoxins,Natl Reference Lab Bioto, Wuhan 430062, Peoples R China

4.Xinjiang Acad Agr Sci, Key Lab Agroprod Qual & Safety Xinjiang, Lab Qual & Safety Risk Assessment Agroprod Urumqi, MOA, Urumqi 830091, Peoples R China

5.Chinese Acad Agr Sci, Oil Crops Res Inst, Wuhan 430062, Peoples R China

6.Hubei Univ, Wuhan 430062, Peoples R China

关键词： Z-scheme photocatalyst; Density functional theory; Photoelectrochemical biosensor; Health care; Environmental monitoring; Food safety

期刊名称：BIOSENSORS & BIOELECTRONICS （ 影响因子：12.545； 五年影响因子：10.722 ）

ISSN： 0956-5663

年卷期： 2022 年 214 卷

页码：

收录情况： SCI

摘要： Designing a photoelectrochemical (PEC) biosensor with preponderant sensitivity and anti-interference is a challenge for detecting small molecules in real samples with complex matrices. To this end, the Bi2O3/CuBi2O4 was synthesized in one step to enhance visible light's absorption ability, transferring the interfacial carrier's efficiency, a high-active Z-scheme heterojunction, and a photocathode biosensor was proposed. For the first time, we used the density functional theory to verify a Z-scheme transfer pathway of photogenerated electrons in Bi2O3/CuBi2O4 and the energy band structure of Bi2O3 and CuBi2O4, respectively. Bi2O3/CuBi2O4-based PEC biosensor was developed for competive immunoassay of small molecular, aflatoxin B1 (AFB1) as an example, resulting in a low detection limit of 297.4 fg/mL and a linear range of 1.4 pg/mL-280 ng/mL in urine, water, peanut, and wheat samples. Using spiked experiments, the satisfied repeatability, reproducibility, stability, and specificity of the Bi2O3/CuBi2O4-based PEC biosensor indicated a promise for application in health care, the environment, and food.

  • 相关文献

[1]Z-scheme Bi2O3/CuBi2O4 heterojunction enabled sensitive photoelectrochemical detection of aflatoxin B1 for health care, the environment, and food. Chen, Xiao,Wu, Huimin,Chen, Xiao,Wu, Huimin,Chen, Xiao,Wu, Wenqin,Zhang, Qi,Zhang, Zhaowei,Wang, Cheng,Fan, Yingying,Zhang, Zhaowei,Wu, Huimin. 2022

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