Design and fabrication of Co9S8/Zn0.5Cd0.5S hollow nanocages with significantly enhanced photocatalytic hydrogen production activity

Li, Xuli; He, Rui-bin; Dai, Yanjie; Li, Songsong; Xiao, Nan; Wang, Aixia; Gao, Yangqin; Li, Ning; Gao, Jianfeng; Zhang, Linhe; Ge, Lei

doi:10.1016/j.cej.2020.125474

Cited by 80 publications

(28 citation statements)

References 75 publications

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“…MCS samples were labeled S 2p 3/2 and S 2p 1/2 at 161 and 162.1 eV, respectively. 26,49,50 The binding energy of 10% Co 9 S 8 -MCS had a negative shift compared with MCS, which could be due to the formation of S-metal ions. 49 Figure 4D shown the XPS spectrum of Co 2p.…”

Section: Xps Analysismentioning

confidence: 98%

“…There was consistent with previous reports, indicating that the Co 9 S 8 sample was successfully derived from the ZIF-67 precursor. 50 Figure 2B is the XRD pattern of MCS and x%Co 9 S 8 -MCS composite. It can be found that the diffraction peak position of MCS was the same as the JCPDS#89-441 standard card of Mn 0.05 Cd 0.95 S, which were located at 2θ = 24.9 , 26.6 , 36.7 , 43.9 , 48.1 and 52.1 , respectively.…”

Section: Xrd Analysismentioning

confidence: 99%

“…In the vulcanization course, the sulfide ions released by TAA react with Co 2+ to form Co X S in the outermost layer. The inwardly diffused sulfide ions further react with the outwardly diffused metal ions, and ZIF-67 was gradually dissolved to form a hollow polyhedral Co x S. 49,50 In Figure 3C, it can be found that Co 9 S 8 retained the structural characteristics of Co X S well after annealing. Figure 3D shown that MCS was aggregated nanoparticles.…”

Section: Sem and Tem Analysismentioning

confidence: 99%

“…Therefore, more photogenerated electrons can participate in the reduction reaction to produce hydrogen, thereby improving the activity of the catalyst. 50 The charge carrier dynamics of the catalyst were analyzed by TRPL spectroscopy. Figure 8B shown the TRPL spectrum fitted with the formula of 10%Co 9 S 8 -MCS and MCS.…”

Section: Photoluminescence Analysismentioning

confidence: 99%

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Mn _0. ₀₅ Cd ₀ _. ₉₅ S decorated MOF ‐derived Co ₉ S ₈ hollow polyhedron for efficient photocatalytic hydrogen evolu

Liu

et al. 2021

Int J Energy Res

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The photocatalytic hydrogen evolution reaction is one of the important ways to convert solar energy into renewable hydrogen. In this work, the Co 9 S 8 hollow polyhedron was formed after sulfidation and calcination with the metalorganic framework ZIF-67. The hollow polyhedron Co 9 S 8 provides abundant support sites for Mn 0.05 Cd 0.95 S and effectively reduces the agglomeration degree of Mn 0.05 Cd 0.95 S. The Co 9 S 8 hollow polyhedron as the reaction site has a large specific surface area and a mesoporous structure, which is beneficial to the progress of the photocatalytic reaction. A series of tests showed that the introduction of Co 9 S 8 hollow polyhedron significantly improved the lighttrapping ability and exposed more reaction sites. Co 9 S 8 hollow polyhedrons are used as electron capture sites, which can effectively collect electrons and induce the interface charge transfer of Mn 0.05 Cd 0.95 S to Co 9 S 8 . Because the Co 9 S 8 -Mn 0.05 Cd 0.95 S composite catalyst had a strong light-trapping ability, abundant reaction sites and Co 9 S 8 -Mn 0.05 Cd 0.95 S heterojunction accelerate the separation and transfer of charges. Therefore, the hydrogen evolution rate of the 10%Co 9 S 8 -Mn 0.05 Cd 0.95 S composite catalyst was relatively high, which was 13.369 mmol g −1 h −1 . In addition, the 10%Co 9 S 8 -Mn 0.05 Cd 0.95 S composite catalyst still has good hydrogen evolution stability after four cycles. This research may supply a new idea for the preparation of high-efficiency photocatalysts with hollow structures.Novelty Statement: The Co 9 S 8 hollow polyhedron provides abundant support sites for M 0.05 C 0.95 S particles, which effectively reduces the degree of agglomeration. The Co 9 S 8 -M 0.05 C 0.95 S heterojunction catalyst not only accelerates the migration and transfer of electrons, but also provides abundant reaction sites. Therefore, the Co 9 S 8 -M 0.05 C 0.95 S composite catalyst has good catalytic activity.

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Section: Xps Analysismentioning

confidence: 98%

Section: Xrd Analysismentioning

confidence: 99%

Section: Sem and Tem Analysismentioning

confidence: 99%

Section: Photoluminescence Analysismentioning

confidence: 99%

See 2 more Smart Citations

Mn _0. ₀₅ Cd ₀ _. ₉₅ S decorated MOF ‐derived Co ₉ S ₈ hollow polyhedron for efficient photocatalytic hydrogen evolu

Liu

et al. 2021

Int J Energy Res

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“…In the field of catalytic conversion applications, in addition to PCO 2 R and ECO 2 R, [195][196][197][198][199][200][201] HTMC can also be applied to photocatalytic, [202] electrocatalytic water splitting [203,204] to produce hydrogen and other aspects. Recently, Guo et al prepared homogeneous hollow H-Fe-CoMoS nanospheres by a simple self-assembly method for the electronic structure control of metal sulfides, providing abundant active sites for the reaction.…”

Section: Other Applicationmentioning

confidence: 99%

Synthesis and Applications of Nanostructured Hollow Transition Metal Chalcogenides

Meng

Wang

2021

Small

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Nanostructures with well‐defined structures and rich active sites occupy an important position for efficient energy storage and conversion. Recent studies have shown that a transition metal chalcogenide (TMC) has a unique structure, such as diverse structural morphology, excellent stability, high efficiency, etc., and is used in the fields of electrochemistry and catalysis. The nanohollow structure metal chalcogenide has broad application prospects due to the existence of a large number of active sites and a wide internal space, allowing a large number of ions and electrons to be transported. Summarizing synthetic strategies of nanostructured hollow transition metal sulfides (HTMC) and their applications in the field of energy storage and conversion is discussed here. Through some representative examples, the fabrication and properties of various hollow structures are analyzed, which prompt some emerging nanoengineering designs to be applied to transition metal chalcogenides. It is hoped that the construction of the HTMC will lead to a deeper understanding for the further exploration of energy storage and conversion.

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Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

Yue

Fan

Xiang

2021

Adv Funct Materials

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Energy‐related problems induced by ever‐continuous fossil consumption have arisen as one of the most challenging issues in the 21st century, imposing urgent demands on advanced materials to achieve high energy utilization and a sustainable society. In various solar energy utilization and solar‐to‐fuel energy conversion processes, charge carriers are the main and inevitable participators, and the charge dynamics related to their generation, migration, separation, and utilization is the key to advance the material design for settling the above issues. Internal electric field (IEF), also named as built‐in electric field, could guide directional migration of charge carriers, achieving effective charge separation, utilization, and prolonged lifetimes. This critical review begins with the discussion on various modulation strategies toward the IEF together with in‐detail elucidated mechanisms on its formation. Some cascade systems for telling the conclusive role from the induced IEF and the intrinsic design strategy are discussed. Then, a summary of the state‐of‐the‐art advances in the characterization means toward the IEF from both quantitative and qualitative perspectives is provided. Finally presented are IEF modulations in several specific energy‐related applications concerning solar cell, photocatalysis, photodetectors, and batteries to better understand its superiority for well‐performed material design, followed by perspectives on future development and opportunities of the IEF design.

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Design and fabrication of Co9S8/Zn0.5Cd0.5S hollow nanocages with significantly enhanced photocatalytic hydrogen production activity

Cited by 80 publications

References 75 publications

Mn _0. ₀₅ Cd ₀ _. ₉₅ S decorated MOF ‐derived Co ₉ S ₈ hollow polyhedron for efficient photocatalytic hydrogen evolu

Mn _0. ₀₅ Cd ₀ _. ₉₅ S decorated MOF ‐derived Co ₉ S ₈ hollow polyhedron for efficient photocatalytic hydrogen evolu

Synthesis and Applications of Nanostructured Hollow Transition Metal Chalcogenides

Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

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Design and fabrication of Co9S8/Zn0.5Cd0.5S hollow nanocages with significantly enhanced photocatalytic hydrogen production activity

Cited by 80 publications

References 75 publications

Mn 0. 05 Cd 0 . 95 S decorated MOF ‐derived Co 9 S 8 hollow polyhedron for efficient photocatalytic hydrogen evolu

Mn 0. 05 Cd 0 . 95 S decorated MOF ‐derived Co 9 S 8 hollow polyhedron for efficient photocatalytic hydrogen evolu

Synthesis and Applications of Nanostructured Hollow Transition Metal Chalcogenides

Internal Electric Field on Steering Charge Migration: Modulations, Determinations and Energy‐Related Applications

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Product

Resources

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Mn _0. ₀₅ Cd ₀ _. ₉₅ S decorated MOF ‐derived Co ₉ S ₈ hollow polyhedron for efficient photocatalytic hydrogen evolu

Mn _0. ₀₅ Cd ₀ _. ₉₅ S decorated MOF ‐derived Co ₉ S ₈ hollow polyhedron for efficient photocatalytic hydrogen evolu