Novel precursor-reforming strategy to the conversion of honeycomb-like 3DOM TiO2 to ant nest-like macro-mesoporous N-TiO2 for efficient hydrogen production

Zhang, Yuanyuan; Lan, Xuefang; Wang, Lili; Liu, Peizhou; Zhang, Yuling; Shi, Jinsheng

doi:10.1016/j.solener.2019.10.083

Cited by 5 publications

(5 citation statements)

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“…The TEM of 1.0 Ni/CN revealed similar morphology as SEM images show ( Figure 4 e) that bulk g-C 3 N 4 locates inside and amorphous Ni/NiO locates outside. Two lattice fringes of 0.203 nm and 0.242 nm were observed in Figure S5g , which are attributed to the Ni (111) crystal plane and NiO (111) crystal plane [ 23 ], respectively. Combining the previous XRD patterns ( Figure 2 a) and XPS spectra ( Figure 3 ) analysis, we can conclude that Ni and NiO species were tightly bounded to each other, and successfully coupled with g-C 3 N 4 .…”

Section: Resultsmentioning

confidence: 99%

Electronegativity Assisted Synthesis of Magnetically Recyclable Ni/NiO/g-C3N4 for Significant Boosting H2 Evolution

et al. 2021

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A magnetically recyclable Ni/NiO/g-C3N4 photocatalyst with significantly enhanced H2 evolution efficiency was successfully synthesized by a simple ethanol-solvothermal treatment. The presence of electronegative g-C3N4 is found to be the key factor for Ni0 formation in ternary Ni/NiO/g-C3N4, which provides anchoring sites for Ni2+ absorption and assembling sites for Ni0 nanoparticle formation. The metallic Ni0, on one side, could act as an electron acceptor enhancing carrier separation and transfer efficiency, and on the other side, it could act as active sites for H2 evolution. The NiO forms a p–n heterojunction with g-C3N4, which also promotes carrier separation and transfer efficiency. The strong magnetic property of Ni/NiO/g-C3N4 allows a good recyclability of catalyst from aqueous solution. The optimal Ni/NiO/g-C3N4 showed a full-spectrum efficiency of 2310 μmol·h−1·g−1 for hydrogen evolution, which is 210 times higher than that of pure g-C3N4. This ethanol solvothermal strategy provides a facile and low-cost synthesis of metal/metal oxide/g-C3N4 for large-scale application.

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Section: Resultsmentioning

confidence: 99%

Electronegativity Assisted Synthesis of Magnetically Recyclable Ni/NiO/g-C3N4 for Significant Boosting H2 Evolution

et al. 2021

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“…Zhang et al. [ 21 ] introduced urea with a porogenic effect into the precursor to modify 3DOM TiO 2 . During the process of calcination, the morphology of TiO 2 transformed from a macroporous structure to one with both macro‐ and mesopores, which greatly increased the absorption capacity of visible light.…”

Section: Structure and Properties Of 3dom Materialsmentioning

confidence: 99%

“…The combination of TiO 2 mesopores and macroporosity significantly increased dye adsorption and promoted reaction substances transport and diffusion. Zhang et al [21] introduced urea with a porogenic effect into the precursor to modify 3DOM TiO 2 . During the process of calcination, the morphology of TiO 2 transformed from a macroporous structure to one with both macro-and mesopores, which greatly increased the absorption capacity of visible light.…”

Section: Structure Of 3dom Materialsmentioning

confidence: 99%

“…However, most of the semiconductor photocatalysts have limited light absorption, fast photogenerated electron‐hole pairs recombination rate, and few reactive sites, attributing to an inferior photocatalytic activity to be utilized at a practical scale. [ 17,18 ] Therefore, plenty of efforts have been made to enhance the photocatalytic performance of catalysts, such as morphological regulation, [ 19,20 ] doping elements, [ 21,22 ] and construction heterojunctions. [ 23,24 ] Photocatalysts with porous structures have attracted great interest from researchers because of their large specific surface area and plentiful active sites, which are favorable for photon trapping and separation of photoinduced charges.…”

Section: Introductionmentioning

confidence: 99%

“…

made to enhance the photocatalytic performance of catalysts, such as morphological regulation, [19,20] doping elements, [21,22] and construction heterojunctions. [23,24] Photocatalysts with porous structures have attracted great interest from researchers because of their large specific surface area and plentiful active sites, which are favorable for photon trapping and separation of photoinduced charges.

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Recent Progress of Three‐dimensionally Ordered Macroporous (3DOM) Materials in Photocatalytic Applications: A Review

Chen

et al. 2023

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In recent years, three‐dimensionally ordered macroporous (3DOM) materials have attracted tremendous interest in the field of photocatalysis due to the periodic spatial structure and unique physicochemical properties of 3DOM catalysts. In this review, the fundamentals and principles of 3DOM photocatalysts are briefly introduced, including the overview of 3DOM materials, the photocatalytic principles based on 3DOM materials, and the advantages of 3DOM materials in photocatalysis. The preparation methods of 3DOM materials are also presented. The structure and properties of 3DOM materials and their effects on photocatalytic performance are briefly summarized. More importantly, 3DOM materials, as a supported catalyst, are extensively employed to combine with various common materials, including metal nanoparticles, metal oxides, metal sulfides, and carbon materials, to enhance photocatalytic performance. Finally, the prospects and challenges for the development of 3DOM materials in the field of photocatalysis are presented.

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Review effect of various types of dyes and structures in supporting performance of dye‐sensitized solar cell TiO ₂ ‐based nanocomposites

Mujtahid

Gareso

Armynah

et al. 2021

Intl J of Energy Research

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The energy demand for supporting the activity of human life is increasing where fossil fuels decreasing sharply every year and have an impact on increasing CO 2 emissions in the environment. An alternative solution for providing practical energy needs is using renewable energy such as solar cells. For environmentally friendly, economical, and efficient concepts, dye-sensitized solar cell (DSSC) is a promising alternative for the photovoltaic field. The performance of a DSSC depends on many factors, such as electron collection at the photoanode, photoanode light-harvesting efficiency, and others. In this review article, we observe the influence of synthetic and natural dye materials on light-harvesting efficiency at photoanodes. The chemical structure of dyes plays an essential role in increasing photon absorption, thereby increasing electron injection and conversion efficiency. In addition to dyes, we also reviewed the influence of the shape of the DSSC structure, namely the sandwich, monolithic, and honeycomb structures, on the performance of DSSCs.This approach helps develop a narrative about the potential and relationship of dyes and structure in increasing efficiency as a guide for synthesizing new materials in the future.

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Novel precursor-reforming strategy to the conversion of honeycomb-like 3DOM TiO2 to ant nest-like macro-mesoporous N-TiO2 for efficient hydrogen production

Cited by 5 publications

References 29 publications

Electronegativity Assisted Synthesis of Magnetically Recyclable Ni/NiO/g-C3N4 for Significant Boosting H2 Evolution

Electronegativity Assisted Synthesis of Magnetically Recyclable Ni/NiO/g-C3N4 for Significant Boosting H2 Evolution

Recent Progress of Three‐dimensionally Ordered Macroporous (3DOM) Materials in Photocatalytic Applications: A Review

Review effect of various types of dyes and structures in supporting performance of dye‐sensitized solar cell TiO ₂ ‐based nanocomposites

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Novel precursor-reforming strategy to the conversion of honeycomb-like 3DOM TiO2 to ant nest-like macro-mesoporous N-TiO2 for efficient hydrogen production

Cited by 5 publications

References 29 publications

Electronegativity Assisted Synthesis of Magnetically Recyclable Ni/NiO/g-C3N4 for Significant Boosting H2 Evolution

Electronegativity Assisted Synthesis of Magnetically Recyclable Ni/NiO/g-C3N4 for Significant Boosting H2 Evolution

Recent Progress of Three‐dimensionally Ordered Macroporous (3DOM) Materials in Photocatalytic Applications: A Review

Review effect of various types of dyes and structures in supporting performance of dye‐sensitized solar cell TiO 2 ‐based nanocomposites

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Review effect of various types of dyes and structures in supporting performance of dye‐sensitized solar cell TiO ₂ ‐based nanocomposites