Constructing Cd0.5Zn0.5S@ZIF-8 nanocomposites through self-assembly strategy to enhance Cr(VI) photocatalytic reduction

Qiu, Jianhao; Zhang, Xiongfei; Zhang, Xingguang; Feng, Yi; Li, Yuxin; Yang, Lvye; Lu, Haiquan; Yao, Jianfeng

doi:10.1016/j.jhazmat.2018.02.009

Cited by 225 publications

(55 citation statements)

References 63 publications

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“…8a, EIS Nyquist plots, the arc radius of Zn 0.30 Cd 0.70 S was smallest among all samples. Therefore, the as-obtained Zn 0.30 Cd 0.70 S material had higher charge transfer efficiency and lower charge recombination possibility than other samples [30,39]. This is because an appropriate amount of doped zinc in the CdS lattice can provide a suitable impurity level, so the excited electrons from the CdS valence band can be easily injected into the conduction band [40].…”

Section: Resultsmentioning

confidence: 98%

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

Lü

Dong

et al. 2021

J Mater Sci

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A series of ZnxCd1−xS solid solutions were synthesized through a simple one-step chemical bath co-precipitation route. The microstructure, morphology, composition and optical properties had been thoroughly investigated. The results showed that the as-obtained ZnxCd1−xS samples exhibited monodisperse spherical feature. These monodisperse ZnxCd1−xS spheres were composed of a large number of 5–10 nm crystal grains. The chemical composition of the ZnxCd1−xS solid solutions can be controlled by adjusting the ratio of Zn source to Cd source and the dosage of ammonia solution. Meanwhile, the energy band structure and photocatalytic properties can be optimized. The photocatalysis experiment results revealed that the as-synthesized Zn0.30Cd0.70S sample exhibited optimum water splitting performance. The satisfactory hydrogen evolution rate (HER) of Zn0.30Cd0.70S reached 27.004 mmol g−1 h−1 even without any cocatalysts, which was more than 48 times that of pure CdS (0.561 mmol g−1 h−1). This enhancing effect can owe to the balance between light absorption capacity and redox potential caused by the incorporation of Zn in the ZnxCd1−xS solid solutions.

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Section: Resultsmentioning

confidence: 98%

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

Lü

Dong

et al. 2021

J Mater Sci

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“…Xue et al constructed 2D mesoporous ultrathin Cd 0.5 Zn 0.5 S nanosheets, and the hydrogen evolution rate was 2.2 times higher than that of Cd 0.5 Zn 0.5 S nanoparticles. 27 Zhang et al reported a NiSe 2 /Cd 0.5 Zn 0.5 S type-II heterojunction whose photocatalytic hydrogen evolution rate was approximately 2.1 times that of pristine Cd 0.5 Zn 0.5 S. 28 Other works, such as those investigating Co 2 P/Cd 0.5 Zn 0.5 S, 29 ZIF-8/Cd 0.5 Zn 0.5 S, 30 Bi 2 S 3 /Cd 0.5 Zn 0.5 S, 31 and g-C 3 N 4 /Cd 0.5 Zn 0.5 S, 32 showed the feasibility of facilitating photogenerated electron migration. However, work on co-catalyst-modified Cd 0.5 Zn 0.5 S is relatively lacking.…”

Section: Introductionmentioning

confidence: 99%

Nickel hydroxide as a non-noble metal co-catalyst decorated on Cd_0.5Zn_0.5S solid solution for enhanced hydrogen evolution

Chen

Zhang

et al. 2021

RSC Adv.

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“…The presence of organic dyes in water resources, used for example, in industrial processes for textiles, food, leather, paint or coatings, leads to many problems such as non-aesthetic, eutrophication, and they also endanger human health [1,2]. There are several traditional techniques for the remediation of dye molecules in wastewater, including physical and biological technologies that are, however, incapable of achieving efficient degradation of the dye molecules [3][4][5][6][7][8]. In recent years, interest has grown into the use of solar energy and semiconductor photocatalysis in water purification, properties [24][25][26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Amino-functionalized MIL-101(Cr) photodegradation enhancement by sulfur-enriched copper sulfide nanoparticles: An experimental and DFT study

Abdpour

Kowsari

Bazri

et al. 2020

Journal of Molecular Liquids

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In the present work, a direct Z-scheme composite photocatalyst, NH2-MIL-101(Cr)@CuS, with high photodegradation efficiency of Rhodamine B (RhB) degradation in the visible light spectrum, is fabricated through a solvothermal method. It was found that the NH2-MIL-101(Cr)@CuS composite with an appropriate amount of NH2-MIL-101(Cr) exhibited high catalytic performance in the RhB photodegradation. The photocur-rent density and results from the electrochemical impedance spectroscopy (EIS) analysis confirm the promoted photocatalytic activity of the NH2-MIL-101(Cr)@CuS composite compared to the pristine MIL-101(Cr) and CuS nanoparticles, which were supported by the electron lifetime (τn) calculations for the samples. The trapping ex-periments and Mott-Schottky analysis revealed that the superoxide radicals (•O − 2) played an essential role in the photodegradation of RhB and the promoted photocatalytic activity contributed to a direct Z-scheme mechanism between CuS and NH2-MIL-101(Cr). Stability study also shows acceptable results during photocatalytic reaction. Furthermore, Density Functional Theory (DFT) calculations were performed to gain a better understanding of the electronic properties of the NH2-MIL-101(Cr)@CuS nanocomposite. The calculated band structures showed that the nanocomposite has a higher photocatalytic efficiency in the visible region compared to the pristine MIL-101 (Cr) and CuS. The calculated band gap of both the semiconductors and the hybrid nanocomposite confirms the experimental results.

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Constructing Cd0.5Zn0.5S@ZIF-8 nanocomposites through self-assembly strategy to enhance Cr(VI) photocatalytic reduction

Cited by 225 publications

References 63 publications

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

Nickel hydroxide as a non-noble metal co-catalyst decorated on Cd_0.5Zn_0.5S solid solution for enhanced hydrogen evolution

Amino-functionalized MIL-101(Cr) photodegradation enhancement by sulfur-enriched copper sulfide nanoparticles: An experimental and DFT study

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Constructing Cd0.5Zn0.5S@ZIF-8 nanocomposites through self-assembly strategy to enhance Cr(VI) photocatalytic reduction

Cited by 225 publications

References 63 publications

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

One-step chemical bath co-precipitation method to prepare high hydrogen-producing active ZnxCd1-xS solid solution with adjustable band structure

Nickel hydroxide as a non-noble metal co-catalyst decorated on Cd0.5Zn0.5S solid solution for enhanced hydrogen evolution

Amino-functionalized MIL-101(Cr) photodegradation enhancement by sulfur-enriched copper sulfide nanoparticles: An experimental and DFT study

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Nickel hydroxide as a non-noble metal co-catalyst decorated on Cd_0.5Zn_0.5S solid solution for enhanced hydrogen evolution