Ultrastable metal-free near-infrared-driven photocatalysts for H2 production based on protonated 2D g-C3N4 sensitized with Chlorin e6

Liu, Yanfei; He, Maofen; Guo, Rui; Fang, Zirou; Kang, Shifei; Ma, Zhen; Dong, Mingdong; Wang, Wenlong; Cui, Lifeng

doi:10.1016/j.apcatb.2019.118137

Cited by 71 publications

(36 citation statements)

References 59 publications

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“…This may be because mTHPC is loaded on the surface of pCN, which enhances the infrared absorption. A similar trend (enhanced IR absorption) is also seen in the Ce6/pCN (Liu et al, 2020a) and Pp/pGCN (Liu et al, 2020b) systems. Figure 4 shows the XPS spectra of samples.…”

Section: Photocatalytic Hydrogen Evolutionsupporting

confidence: 70%

“…The average HER of mTHPC/bCN is 59.3 μmol · h −1 · g −1 . mTHPC/pCN shows the highest average HER of 78.8 μmol · h −1 · g −1 , lower than the rate obtained by Ce6/pCN (312.6 μmol · h −1 · g −1 ) (Liu et al, 2020a ) and Pp/pGCN (307.8 μmol · h −1 · g −1 ) (Liu et al, 2020b ). This may be because the UV-VIS-NIR absorption capacity of mTHPC is lower than that of Ce6 and Pp ( Supplementary Figure 6 ).…”

Section: Resultsmentioning

confidence: 82%

“…The average HER of pCN and mTHPC/bCN are 266.0 and 605.8 μmol · h −1 · g −1 , respectively. mTHPC/pCN shows the highest average HER of 1,041.4 μmol · h −1 · g −1 , somewhat lower than the average HER obtained by Ce6/pCN (1,275.6 μmol · h −1 · g −1 ) (Liu et al, 2020a ) and Pp/pGCN (1,153.8 μmol · h −1 · g −1 ) (Liu et al, 2020b ). Furthermore, mTHPC/pCN has good cycle stability under VIS-NIR irradiation in Figure 6B .…”

Section: Resultsmentioning

confidence: 84%

“…Photosensitizers are the general term of molecules that can absorb light and transfer energy to other materials. Some researchers modified g-C 3 N 4 with photosensitizers such as phthalocyanine (Zhang et al, 2014 ), a combination of organic dye and zinc phthalocyanine derivative (Zhang X. H. et al, 2015 ), μ-oxo dimeric iron (III) porphyrin (Wang D. H. et al, 2016 ), zinc phthalocyanine (Liu Q. W. et al, 2018 ), mesotetrakis (carboxyphenyl) porphyrins (Da Silva et al, 2018 ), copper octacarboxyphthalocyanine (Ouedraogo et al, 2018 ), zinc phthalocyanine derivative (Zeng et al, 2019 ), multiporphyrin (Yang et al, 2019 ), zinc (II) 1, 8(11), 15(18), 22(25) -tetrakis (4-carboxylphenoxy) phthalocyanine (α-ZnTcPc) (He et al, 2019 ), porphyrin (Tian et al, 2019 ), Chlorin e6 (Ce6) (Liu et al, 2020a ), 3,4,9,10-perylenetetracarboxylic acid anhydride (PTCDA) (Yuan et al, 2020 ), tetra (4-carboxyphenyl) porphyrin iron (III) chloride (FeTCPP) (Zhang et al, 2020 ), protoporphyrin (Pp) (Liu et al, 2020b ), and naphthalimide-porphyrin (Li L. L. et al, 2020 ). However, more examples in this regard are needed because this is a very interesting topic.…”

Section: Introductionmentioning

confidence: 99%

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g-C3N4 Modified by meso-Tetrahydroxyphenylchlorin for Photocatalytic Hydrogen Evolution Under Visible/Near-Infrared Light

Liu

2020

Front. Chem.

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A new photocatalyst denoted as mTHPC/pCN was prepared by modifying protonated graphitic carbon nitride (pCN) by meso-tetrahydroxyphenylchlorin (mTHPC). Relevant samples were characterized via various methods including zeta potential measurements, X-ray diffraction, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, N 2 adsorption-desorption, transmission electron microscopy, ultraviolet-visible-near-infrared spectroscopy, electrochemical impedance spectroscopy, photocurrent response measurements, electron spin resonance spectroscopy, and phosphorescence spectroscopy. Compared with pCN, mTHPC/pCN shows enhanced absorption in the visible and near-infrared regions and thus higher photocatalytic activity in hydrogen evolution. A possible mechanism for mTHPC/pCN is proposed.

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Section: Photocatalytic Hydrogen Evolutionsupporting

confidence: 70%

Section: Resultsmentioning

confidence: 82%

Section: Resultsmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

g-C3N4 Modified by meso-Tetrahydroxyphenylchlorin for Photocatalytic Hydrogen Evolution Under Visible/Near-Infrared Light

Liu

2020

Front. Chem.

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“…4a, transient-photocurrent responses of as-prepared photocatalysts were measured under the light irradiation with intermittent on-off cycles to evaluate the production and migration of photogenerated carriers. The higher intensity of photocurrent, the stronger generating ability of photogenerated carriers [24,25]. The photocurrent density is higher in the light than that in the dark, and displays a typical on-off cycle mode.…”

Section: Resultsmentioning

confidence: 99%

Construction of ZnTiO3/Bi4NbO8Cl heterojunction with enhanced photocatalytic performance

Gao

2020

Nanoscale Res Lett

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Constructing heterojunction is an effective strategy to enhance photocatalytic performance of photocatalysts. Herein, we fabricated ZnTiO 3 /Bi 4 NbO 8 Cl heterojunction with improved performance via a typical mechanical mixing method. The rhodamine (RhB) degradation rate over heterojunction is higher than that of individual ZnTiO 3 or Bi 4 NbO 8 Cl under Xenon-arc lamp irradiation. Combining ZnTiO 3 with Bi 4 NbO 8 Cl can inhibit the recombination of photo-excited carriers. The improved quantum efficiency was demonstrated by transient-photocurrent responses (PC), electrochemical impedance spectroscopy (EIS), photoluminescence (PL) spectra, and time-resolved PL (TRPL) spectra. This research may be valuable for photocatalysts in the industrial application.

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Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

Dang

Xie

Dai

et al. 2021

Adv Materials Inter

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hydrogen combustion only produces water. Therefore, hydrogen as a promising energy for the future development can help to meet the future energy needs and solve environmental problems. [4,5] Semiconductor-based photocatalytic water splitting utilizing renewable solar energy for hydrogen production is considered to be a feasible technology with great promise. [6][7][8][9] According to the research of titanium dioxide (TiO 2 ) single crystal in photoelectrochemistry, Fujishima and Honda [10] pioneered the field of semiconductor photocatalysis. However, the wide band gap of metal oxide such as ZnO, [11][12][13][14] SnO 2 , [15][16][17][18] Nb 2 O 5 , [19][20][21] etc., makes them only respond to near-ultraviolet or ultraviolet light, resulting in low efficiency of solar energy. In fact, visible light accounts for 43% of sunlight, while ultraviolet ray accounts for merely 4%. Therefore, developing visible light-driven photocatalysts attracts widespread attention for purpose of making better use of solar energy. [22][23][24] Graphite carbon nitride (g-C 3 N 4 ) is an attractive nonmetallic conjugated polymer semiconductor, which has been extensively applied in photocatalytic water splitting because of its attractive electronic structure, excellent thermal and chemical stability, unique 2D layered structure, suitable band gap, low toxicity, etc. [25][26][27] However, the actual application of the original g-C 3 N 4 still suffers from the limitations of underutilization of visible light, lacking of catalytic active sites, hydrophobic surface, low carrier mobility, and rapid recombination of photoinduced carriers. [28,29] For addressing these challenges, various strategies have been adopted so as to improve the photocatalytic performance of the original g-C 3 N 4 , such as nanostructure design, [30][31][32] doping of metallic and nonmetallic elements, [33][34][35][36] construction of heterojunctions, [37][38][39][40] copolymerization, [41][42][43] defect engineering, and dye sensitization. [44,45] Among them, the controllable synthesis of nanoscale morphology is one of the resultful means. Because of its characteristics including appropriate porosity, massive surface groups for anchoring, large specific surface area, slim thickness and as well as high aspect ratio, semiconductor nanosheets describe a brilliant future. [46] Therefore, 2D g-C 3 N 4 nanosheets may significantly improve the photocatalytic activity. [47,48] Besides, integration with other semiconductors to build heterojunctions is considered to be a reliable means. [49][50][51] Ultrathin 2D/2D heterostructures usually Designation of high-efficiency water splitting photocatalyst is still a challenge in converting solar energy into chemical fuels. Heterojunction can inhibit recombination of carriers which is considered to be a reliable strategy to improve photocatalytic performance on water splitting. In this work, a "face-to-face" 2D tight heterostructure is constructed by growing ZnIn 2 S 4 nanosheets on g-C 3 N 4 nanosheets. Due to the ultrathin 2D structure...

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Ultrastable metal-free near-infrared-driven photocatalysts for H2 production based on protonated 2D g-C3N4 sensitized with Chlorin e6

Cited by 71 publications

References 59 publications

g-C3N4 Modified by meso-Tetrahydroxyphenylchlorin for Photocatalytic Hydrogen Evolution Under Visible/Near-Infrared Light

g-C3N4 Modified by meso-Tetrahydroxyphenylchlorin for Photocatalytic Hydrogen Evolution Under Visible/Near-Infrared Light

Construction of ZnTiO3/Bi4NbO8Cl heterojunction with enhanced photocatalytic performance

Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

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Ultrastable metal-free near-infrared-driven photocatalysts for H2 production based on protonated 2D g-C3N4 sensitized with Chlorin e6

Cited by 71 publications

References 59 publications

g-C3N4 Modified by meso-Tetrahydroxyphenylchlorin for Photocatalytic Hydrogen Evolution Under Visible/Near-Infrared Light

g-C3N4 Modified by meso-Tetrahydroxyphenylchlorin for Photocatalytic Hydrogen Evolution Under Visible/Near-Infrared Light

Construction of ZnTiO3/Bi4NbO8Cl heterojunction with enhanced photocatalytic performance

Ultrathin 2D/2D ZnIn2S4/g‐C3N4 Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light

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Ultrathin 2D/2D ZnIn₂S₄/g‐C₃N₄ Nanosheet Heterojunction with Atomic‐Level Intimate Interface for Photocatalytic Hydrogen Evolution under Visible Light