Construction of a Z-scheme g-C3N4/NBGO/BiVO4 heterostructure with visible-light driven photocatalytic degradation of tetracycline: efficiency, reaction pathway and mechanism

Peng, Xiaoming; Liu, Caihua; Zhao, Zilong; Hu, Fengping; Hirata, Dai

doi:10.1039/d1cy01850g

Cited by 29 publications

(13 citation statements)

References 80 publications

(77 reference statements)

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“…In general, the increased current response demonstrates the accelerated photogenerated charge carrier transport kinetics under light illumination. 83,84 The consequence illustrates that the hetero-structure, B doping, RP, and CoP can increase the charge separation efficiency. As shown in Fig.…”

Section: Resultsmentioning

confidence: 97%

CoP decorated 2D/2D red phosphorus/B doped g-C₃N₄ type II heterojunction for boosted pure water splitting activity via the two-electron pathway

Guo

Tian

Dou

et al. 2023

Catal. Sci. Technol.

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Section: Resultsmentioning

confidence: 97%

CoP decorated 2D/2D red phosphorus/B doped g-C₃N₄ type II heterojunction for boosted pure water splitting activity via the two-electron pathway

Guo

Tian

Dou

et al. 2023

Catal. Sci. Technol.

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“…In general, the higher the relative amount of pyridinic N, the better the catalytic performance of the photocatalyst. 46 This is perhaps because the electron-withdrawing pyridinic N sites can accept electrons from the adjacent C atoms, promoting the adsorption of intermediates necessary for the generation of ROS (e.g., OH − , OOH − ). 58 From Figure 6, the ratios of pyridinic N to pyrrolic N in WNGA-1, WNGA-2, WNGA-3, and WNGA-4 are 0.14, 0.31, 0.34, and 0.28, respectively.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Aerogels Made of Few-Layer WS₂ Nanosheets and Nitrogen-Doped Graphene for Photocatalytic Degradation of Caffeine

Shafi,

Das,

Dubey

et al. 2024

ACS Appl. Nano Mater.

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As a spontaneous renewable energy-based technology, with an astonishing ability to destroy recalcitrant organic pollutants under ambient conditions, solar-driven heterogeneous photocatalysis has sparked immense interest over the past decade. However, creating photocatalysts with astounding visible-light harnessing capacity and undemanding recuperation persists as a significant hurdle to the widespread exploitation of photocatalysis in water treatment. Herein, we propose a potentially nontoxic, robust, durable, and self-supporting photocatalyst, based on the in situ growth of few-layer (FL) WS 2 nanosheets on the interpenetrating channels of nitrogen (N)-doped graphene aerogel (henceforth denoted as "WNGA"). Constructed through a mild hydrothermal processing scheme, WNGA shows self-floating capability, exceptional mechanical resilience, and remarkable solar absorption in the visible range. In addition, the coexistence of pyridinic N species and FL-WS 2 clusters synergistically provides surplus active sites for catalytic reactions. Besides, the interconnected conductive networks of WNGA coherently upregulate charge separation and transfer in 3D. As a result of these beneficial attributes, WNGA presents prominent photocatalytic activity and excellent recycling stability. For instance, through a combination of adsorption and partial oxidation, WNGA can dissociate up to 93% caffeine, the most widely consumed psychoactive substance, into innocuous products over multiple cycles. As a figure-of-merit for the commercial potential of WNGA, we also demonstrate the photocatalytic degradation of caffeine in four different real matrixes, viz., tap water, pond water, municipal wastewater, and hospital wastewater. The exceptional photocatalytic properties, improved durability, and facile retrieval opportunities validate the application potential of WNGA to eliminate psychoactive substances in aqueous environments.

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“…This indicates that such an interfacial charge transfer facilitates the separation of photogenerated electron–hole pairs. Moreover, the conduction band (CB) position of TiO 2 (−0.43 eV) is more negative than the standard reduction potentials of O 2 /·O 2 – (−0.33 eV), indicating that the CB potential of TiO 2 is sufficient to reduce O 2 to ·O 2 – . The E VB of TiO 2 (2.75 eV) is more positive than the standard oxidation potential of ·OH/H 2 O (2.68 eV), so part of TiO 2 can oxidize H 2 O to form ·OH.…”

Section: Resultsmentioning

confidence: 99%

In Situ Monitoring Charge Transfer on Topotactic Epitaxial Heterointerface for Tetracycline Degradation at the Single-Particle Level

Tong

et al. 2022

ACS Catal.

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Selectively constructing heterojunctions on specific crystal facets enable directional electron−hole migration and favorable charge separation. Meanwhile, in-depth monitoring and investigating charge-transfer process on specific crystal facets of individual single crystal are particularly important. Herein, we report a strategy for synthesizing SrTiO 3 /TiO 2 epitaxial heterojunctions (ST/T), in which highly ordered SrTiO 3 mesocrystals are selectively topologically grown on the TiO 2 {001} facet. It exhibits good photocatalytic activity for tetracycline (TC) degradation. Notably, single-particle spectroscopy was employed to accurately monitor the transfer and recombination of carriers at the specific nanoregions of individual particle. The weaker photoluminescence (PL) intensity and longer lifetime at the epitaxial central site of ST/T particle indicate that the epitaxial heterointerface promotes the separation of charge carriers. Moreover, in situ monitoring of TC degradation on single ST/T particle confirms that the epitaxial heterojunction suppressed the PL lifetime decay, further demonstrating the pivotal role of site-selective topotactic epitaxy. This study presents a strategy for rational designing heterojunction photocatalysts and is beneficial for in-depth monitoring and understanding the structure−activity relationship at the single-particle level.

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Construction of a Z-scheme g-C₃N₄/NBGO/BiVO₄ heterostructure with visible-light driven photocatalytic degradation of tetracycline: efficiency, reaction pathway and mechanism

Abstract: In this study, an aminated graphene-like biochar (NGBO) was used as a solid-state electron mediator at a g-C3N4/BiVO4 interface to construct a hybrid Z-scheme system (g-C3N4/NBGO/BiVO4) for the photocatalytic degradation of tetracycline (TC) from aqueous solutions.

Cited by 29 publications

References 80 publications

CoP decorated 2D/2D red phosphorus/B doped g-C₃N₄ type II heterojunction for boosted pure water splitting activity via the two-electron pathway

CoP decorated 2D/2D red phosphorus/B doped g-C₃N₄ type II heterojunction for boosted pure water splitting activity via the two-electron pathway

Aerogels Made of Few-Layer WS₂ Nanosheets and Nitrogen-Doped Graphene for Photocatalytic Degradation of Caffeine

In Situ Monitoring Charge Transfer on Topotactic Epitaxial Heterointerface for Tetracycline Degradation at the Single-Particle Level

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Construction of a Z-scheme g-C3N4/NBGO/BiVO4 heterostructure with visible-light driven photocatalytic degradation of tetracycline: efficiency, reaction pathway and mechanism

Abstract: In this study, an aminated graphene-like biochar (NGBO) was used as a solid-state electron mediator at a g-C3N4/BiVO4 interface to construct a hybrid Z-scheme system (g-C3N4/NBGO/BiVO4) for the photocatalytic degradation of tetracycline (TC) from aqueous solutions.

Cited by 29 publications

References 80 publications

CoP decorated 2D/2D red phosphorus/B doped g-C3N4 type II heterojunction for boosted pure water splitting activity via the two-electron pathway

CoP decorated 2D/2D red phosphorus/B doped g-C3N4 type II heterojunction for boosted pure water splitting activity via the two-electron pathway

Aerogels Made of Few-Layer WS2 Nanosheets and Nitrogen-Doped Graphene for Photocatalytic Degradation of Caffeine

In Situ Monitoring Charge Transfer on Topotactic Epitaxial Heterointerface for Tetracycline Degradation at the Single-Particle Level

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Construction of a Z-scheme g-C₃N₄/NBGO/BiVO₄ heterostructure with visible-light driven photocatalytic degradation of tetracycline: efficiency, reaction pathway and mechanism

CoP decorated 2D/2D red phosphorus/B doped g-C₃N₄ type II heterojunction for boosted pure water splitting activity via the two-electron pathway

CoP decorated 2D/2D red phosphorus/B doped g-C₃N₄ type II heterojunction for boosted pure water splitting activity via the two-electron pathway

Aerogels Made of Few-Layer WS₂ Nanosheets and Nitrogen-Doped Graphene for Photocatalytic Degradation of Caffeine