A novel heterojunction ZnO/CuO piezoelectric catalysts: fabrication, optical properties and piezoelectric catalytic activity for efficient degradation of methylene blue

Wang, Shifa; Tang, Shengnan; Yang, Hua; Wang, Fei; Yu, Chuan; Gao, Huajing; Fang, Leiming; Sun, Guangzhuang; Yi, Zao; Li, Dengfeng

doi:10.1007/s10854-022-07899-2

“…[102] In addition, they found for the first time that ZnO nanorods can control the migration of dye molecules according to the molecular polarity, thereby realizing the selective adsorption of dye molecules. ZnO‐based heterojunctions exhibit excellent performance for organic degradation, including those based on ZnO/CuO, [103] CdS/ZnO, [104] and MoOx/ZnS/ZnO [105] . Wang et al.…”

Section: Application In Environmental Remediationmentioning

confidence: 99%

“…Wang et al. synthesized novel ZnO/CuO heterojunctions (Figure 7c) with different Zn/Cu molar ratios and found that when n Zn: n Cu was equal to 9 : 1, the degradation rate of the heterojunction ZnO/CuO was as high as 71.06 % [103] …”

Section: Application In Environmental Remediationmentioning

confidence: 99%

“…[102] In addition, they found for the first time that ZnO nanorods can control the migration of dye molecules according to the molecular polarity, thereby realizing the selective adsorption of dye molecules. ZnO-based heterojunctions exhibit excellent performance for organic degradation, including those based on ZnO/CuO, [103] CdS/ZnO, [104] and MoOx/ZnS/ ZnO. [105] Wang et al synthesized novel ZnO/CuO heterojunctions (Figure 7c) with different Zn/Cu molar ratios and found that when nZn:nCu was equal to 9 : 1, the degradation rate of the heterojunction ZnO/CuO was as high as 71.06 % .…”

Section: Degradation Of Water Pollutantsmentioning

confidence: 99%

“…[105] Wang et al synthesized novel ZnO/CuO heterojunctions (Figure 7c) with different Zn/Cu molar ratios and found that when nZn:nCu was equal to 9 : 1, the degradation rate of the heterojunction ZnO/CuO was as high as 71.06 % . [103] Perovskite-based materials are also widely used in piezoelectric catalysis to treat environmental pollution. Hong et al reported, for the first time, the piezo-electrochemical (PZEC) effect, which can directly convert mechanical energy into chemical energy.…”

Section: Degradation Of Water Pollutantsmentioning

confidence: 99%

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Piezocatalytic Techniques in Environmental Remediation

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As a consequence of rapid industrialization throughout the world, various environmental pollutants have begun to accumulate in water, air, and soil. This endangers the ecological environment of the earth, and environmental remediation has become an immediate priority. Among various environmental remediation techniques, piezocatalytic techniques, which uniquely take advantage of the piezoelectric effect, have attracted much attention. Piezoelectric effects allow pollutant degradation directly, while also enhancing photocatalysis by reducing the recombination of photogenerated carriers. In this Review, we provide a comprehensive summary of recent developments in piezocatalytic techniques for environmental remediation. The origin of the piezoelectric effect as well as classification of piezoelectric materials and their application in environmental remediation are systematically summarized. We also analyze the potential underlying mechanisms. Finally, urgent problems and the future development of piezocatalytic techniques are discussed.

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“…The polyacrylamide gel method is an effective method for the synthesis of metal oxide semiconductor materials by our research group [26][27][28][29] . Different morphologies and properties of metal oxide semiconductor materials can be obtained by adjusting and controlling the experimental parameters [30][31][32] .…”

Section: Introductionmentioning

confidence: 99%

Hexagonal Lead Ferrite Magnetic Separation Catalysts: Synthesis, Optical Characterization, Ultrasonic Catalytic Activity and Performance Prediction

2022

J Mod Polym Chem Mater

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Objective: This study was performed to explore a new method to synthesize PbFe 12 O 19 magnetic separation catalysts and analyze its ultrasonic catalytic activity for the degradation of rhodamine B (RhB) dye under ultrasonic vibration.Methods: A polyacrylamide gel method was developed to synthesize the hexagonal lead ferrite (PbFe 12 O 19 ) magnetic separation catalysts with different Fe/Pb molar ratios and sintering temperatures. Results:The phase structure and composition of PbFe 12 O 19 magnetic separation catalysts altered with the change in the Fe/Pb mole ratio and sintering temperature. The color properties, energy band values and degradation percentages of PbFe 12 O 19 magnetic separation catalysts for the degradation of RhB dye under ultrasonic vibration were linearly independent of Fe/Pb mole ratio and sintering temperature. The maximum degradation percentage of 78.99% for the PbFe 12 O 19 magnetic separation catalysts for the removal of RhB from wastewater was found at 2g/L of initial catalyst concentration, 50mg/L of initial dye concentration, and 180min of vibration time. Conclusion:The PbFe 12 O 19 magnetic separation catalysts exhibited high catalytic activity for the degradation of RhB dye under ultrasonic vibrations. Based on the experiment parameters, a neural network model was established to predict the effect of synthesis parameters on the degradation percentage of PbFe 12 O 19 catalysts. This work further confirmed that the neural network algorithm was available to predict the ultrasonic catalytic activity of semiconductor materials.

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Piezocatalytic Techniques in Environmental Remediation

Qi

¹

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Xu

²

,

Thomas

³

et al. 2022

View full text Add to dashboard Cite

As a consequence of rapid industrialization throughout the world, various environmental pollutants have begun to accumulate in water, air, and soil. This endangers the ecological environment of the earth, and environmental remediation has become an immediate priority. Among various environmental remediation techniques, piezocatalytic techniques, which uniquely take advantage of the piezoelectric effect, have attracted much attention. Piezoelectric effects allow pollutant degradation directly, while also enhancing photocatalysis by reducing the recombination of photogenerated carriers. In this Review, we provide a comprehensive summary of recent developments in piezocatalytic techniques for environmental remediation. The origin of the piezoelectric effect as well as classification of piezoelectric materials and their application in environmental remediation are systematically summarized. We also analyze the potential underlying mechanisms. Finally, urgent problems and the future development of piezocatalytic techniques are discussed.

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A novel heterojunction ZnO/CuO piezoelectric catalysts: fabrication, optical properties and piezoelectric catalytic activity for efficient degradation of methylene blue

Cited by 32 publications

References 95 publications

Piezocatalytic Techniques in Environmental Remediation

Piezocatalytic Techniques in Environmental Remediation

Hexagonal Lead Ferrite Magnetic Separation Catalysts: Synthesis, Optical Characterization, Ultrasonic Catalytic Activity and Performance Prediction

Piezocatalytic Techniques in Environmental Remediation

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