A novel hierarchical Bi2MoO6/Mn0.2Cd0.8S Heterostructured Nanocomposite for Efficient Visible-light hydrogen production

Liu, Xiaoming; Wu, Binquan; Chen, Xueya; Liu, Na; Guo, Hao; Li, Kexin; Xu, Luping; Lin, Jun

doi:10.1016/j.ijhydene.2019.11.197

Cited by 53 publications

(6 citation statements)

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“…[ 42 ] In Figure 5C, the peaks at 641.4 and 652.1 eV are assigned to Mn 2p 3/2 and Mn 2p 1/2 , respectively. [ 43 ] The signal at 161.0 and 162.2 eV in the high‐resolution fine spectrum of S (Figure 5D) is attributed to S 2p 3/2 and S 2p 1/2 , which indicates that S exists in the form of −2 valence. [ 44 ] In the XPS spectrum of C 1s (Figure 5E), there are four obvious peaks located at 284.5, 285.0, 286.5, and 289.1 eV, corresponding to CC, CC, CO, and CO, respectively.…”

Section: Resultsmentioning

confidence: 99%

A New Allotrope of Carbon—Graphdiyne (g‐C_nH₂_n₋₂) Boosting with Mn_0.2Cd_0.8S form S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

Jin

Gong

2021

Adv Materials Inter

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As a new 2D carbon hybrid material, graphdiyne has attracted much attention due to its good conductivity, adjustable electronic structure, and special electron transfer enhancement properties. It has great potential in the field of hydrogen evolution by photocatalytic water splitting due to its special properties. In this paper, layered graphdiyne is prepared by crosscoupling method, using CuI instead of typical copper film as catalyst. Graphdiyne/CuI is used to modify Mn0.2Cd0.8S (MCS) solid solution for the first time, which greatly improves the optical properties and hydrogen production performance of the photocatalyst. The S‐scheme heterojunction constructed between graphdiyne and MCS greatly improves the transfer rate of photoinduced electrons. In addition, the results of fluorescence spectra and photoelectrochemical tests show that the nanocomposites have longer carrier lifetime, lower recombination rate, faster carrier migration rate, and lower hydrogen evolution overpotential. Therefore, the hydrogen evolution rate of the MnCdS/graphdiyne/CuI with the best performance can reach 9.904 mmol g−1 h−1, which is 4.02 times of that of pure MCS. This work not only proposes the possible mechanism of photocatalytic hydrogen production but also provides an important strategy for the application of graphdiyne in the field of photocatalytic hydrogen production.

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Section: Resultsmentioning

confidence: 99%

A New Allotrope of Carbon—Graphdiyne (g‐C_nH₂_n₋₂) Boosting with Mn_0.2Cd_0.8S form S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

Jin

Gong

2021

Adv Materials Inter

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“…Figure 1A shows the diffraction peaks of MCS and CPO and their standard diffraction peaks. It can be clearly seen that MCS has seven distinct characteristic peaks at 2θ = 25.04°, 26.79°, 28.47°, 36.89°, 44.12°, 48.36°, and 52.35°, corresponding to the rod‐shaped MCS (100), (002), (101), (102), (110), (103), and (112) crystal planes (JCPDS # 89‐443) 27 . And several distinct characteristic peaks of CPO appear at 11.32°, 13.32°, 18.31°, and 30.41°, corresponding to (110), (020), (200), (201) crystal planes of CPO (JCPDS # 41‐0375) 26 .…”

Section: Resultsmentioning

confidence: 99%

Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

et al. 2021

Int J Energy Res

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Summary PO43− ions have good conductivity and can provide open channels for rapid ion migration. In contrast, the solid solution Mn0.2Cd0.8S catalyst has been limited for a long time due to its low charge separation efficiency and its tendency to lead to rapid electrons and holes binding. Therefore, on the basis of in‐depth study catalysts of Co3(PO4)2 and Mn0.2Cd0.8S, we successfully synthesized flake‐shaped stacked nano‐flower shaped Co3(PO4)2 and rod‐shaped Mn0.2Cd0.8S. In addition, combined with traditional physical heating and stirring method, Mn0.2Cd0.8S was inserted into the petals of Co3(PO4)2, forming a heterojunction between their contact surfaces to promote photocatalytic hydrogen production. The study found that when the amount of Co3(PO4)2 was 10%, the hydrogen reduction efficiency of the composite catalyst reached was the best, reaching 0.57 mmol (11.4 mmol/h/g) within 5 hours, which was three times that of the single catalyst Mn0.2Cd0.8S. The results show that the formation of heterojunction provides an open channel for rapid charge transfer and reduces the consumption of photo generate carriers. Moreover, the flake‐like accumulation of Co3(PO4)2 provided a 3D reaction space for Mn0.2Cd0.8S, and increased the reaction active sites omaf, the composite catalyst. Therefore, more effective photo‐generated carriers migrate to the surface of Co3(PO4)2 and then participate in the photocatalytic evolution reaction of hydrogen. This study provides a new idea for improving the photocatalytic hydrogen production performance of Mn0.2Cd0.8S catalyst.

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“…In recent years, Mn x Cd 1– x S is of great interest for its excellent photocatalytic performance, tunable energy band structure, and diverse preparation methods . It has been shown that Mn x Cd 1– x S solid solution can also be modified as a visible light-responsive and efficient photocatalyst through morphology modulation and elemental covariance. − In addition, Mn x Cd 1– x S shows stable photocatalytic hydrogen precipitation activity under visible light irradiation .…”

Section: Introductionmentioning

confidence: 99%

“…Compared with MnS and CdS, Mn x Cd 1– x S has an appropriate band gap width and a more negative conduction position. Adjusting the ratio of manganese to cadmium can change the band gap of Mn x Cd 1– x S from 2.21 to 3.43 eV, capturing additional visibility to boost photocatalytic intensity. , When manganese to cadmium are in the chemical ratio of 1:4, Mn 0.2 Cd 0.8 S/g-C 3 N 4 shows the optimal photocatalytic activity …”

Section: Introductionmentioning

confidence: 99%

“…29,30 When manganese to cadmium are in the chemical ratio of 1:4, Mn 0.2 Cd 0.8 S/g-C 3 N 4 shows the optimal photocatalytic activity. 31 Among the previous studies, the catalytic efficiency for prepared photocatalysts was low, 32−34 fewer influencing variables were explored, and their performance was not explored to the maximum extent. 35,36 Salavati-Niasari et al and Mir et al 37−39 only explored the changes in their structure through a series of characterization tools but did not apply them to practical experiments.…”

Section: Introductionmentioning

confidence: 99%

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Highly Efficient Visible-Light-Driven Mn_0.2Cd_0.8S/g-C₃N₄ Heterojunction for the Photodegradation of Highly Toxic Tetracycline Antibiotics

Gao

2023

Ind. Eng. Chem. Res.

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With the rapid advancement of modern science and technology, the damage of antibiotics to human health and ecosystem has aroused widespread concern. In this study, a Mn 0.2 Cd 0.8 S/g-C 3 N 4 type II heterojunction was prepared. The effects of different loading ratios, catalyst dosage, and pH on the photocatalytic functions of the composites were investigated. When the additive dosage of 10% Mn 0.2 Cd 0.8 S/g-C 3 N 4 was 1.20 g/ L, and the pH of the tetracycline (TC) solution was 5, the photodegradation rate of TC (10 mg/L) was 98.4% under the irradiation of visible light for 120 min. After four cycles, the photodegradation rate of 10% Mn 0.2 Cd 0.8 S/g-C 3 N 4 reached 96.8%, indicating good stability and recoverability. Furthermore, the study found that •O 2 − was the dominant active species leading to the decolorization of TC in the process of photocatalysis. Based on its excellent photodegradation rate and great cycle utilization rate, the Mn 0.2 Cd 0.8 S/g-C 3 N 4 composite provided a promising suggestion for photocatalytic degradation of antibiotics.

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A novel hierarchical Bi2MoO6/Mn0.2Cd0.8S Heterostructured Nanocomposite for Efficient Visible-light hydrogen production

Cited by 53 publications

References 55 publications

A New Allotrope of Carbon—Graphdiyne (g‐C_nH₂_n₋₂) Boosting with Mn_0.2Cd_0.8S form S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

A New Allotrope of Carbon—Graphdiyne (g‐C_nH₂_n₋₂) Boosting with Mn_0.2Cd_0.8S form S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

Highly Efficient Visible-Light-Driven Mn_0.2Cd_0.8S/g-C₃N₄ Heterojunction for the Photodegradation of Highly Toxic Tetracycline Antibiotics

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A novel hierarchical Bi2MoO6/Mn0.2Cd0.8S Heterostructured Nanocomposite for Efficient Visible-light hydrogen production

Cited by 53 publications

References 55 publications

A New Allotrope of Carbon—Graphdiyne (g‐CnH2n−2) Boosting with Mn0.2Cd0.8S form S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

A New Allotrope of Carbon—Graphdiyne (g‐CnH2n−2) Boosting with Mn0.2Cd0.8S form S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

Mn 0. 2 Cd 0 . 8 S modified with 3D flower‐shaped Co 3 ( PO 4 ) 2 for efficient pho

Highly Efficient Visible-Light-Driven Mn0.2Cd0.8S/g-C3N4 Heterojunction for the Photodegradation of Highly Toxic Tetracycline Antibiotics

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A New Allotrope of Carbon—Graphdiyne (g‐C_nH₂_n₋₂) Boosting with Mn_0.2Cd_0.8S form S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

A New Allotrope of Carbon—Graphdiyne (g‐C_nH₂_n₋₂) Boosting with Mn_0.2Cd_0.8S form S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Evolution

Mn _0. ₂ Cd ₀ _. ₈ S modified with 3D flower‐shaped Co ₃ ( PO ₄ ) ₂ for efficient pho

Highly Efficient Visible-Light-Driven Mn_0.2Cd_0.8S/g-C₃N₄ Heterojunction for the Photodegradation of Highly Toxic Tetracycline Antibiotics