Pyroelectric effect in CdS nanorods decorated with a molecular Co-catalyst for hydrogen evolution

Zhang, Meiyu; Hu, Qiyu; Ma, Kangwei; Ding, Yong; Li, Can

doi:10.1016/j.nanoen.2020.104810

Cited by 154 publications

(81 citation statements)

References 39 publications

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“…In terms of photo‐generated electron–hole recombination and lack of active sites, loading co‐catalysts is regarded as an effective strategy for not only providing abundant active sites but also transferring photo‐generated electrons from CdS to co‐catalysts to inhibit carrier recombination. [ 14 ] It is worth noting that most of the loading methods of co‐catalysts on CdS are realized by vulcanizing the separated Cd source and co‐catalyst precursors. As a result, the interface contacts between the co‐catalyst and CdS are insufficient.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of CdS/MoS₂ Nanooctahedrons Heterostructure with a Tight Interface for Enhanced Photocatalytic H₂ Evolution and Biomass Upgrading

Zhao

Dong

et al. 2020

Solar RRL

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With the depletion of fossil fuels and environmental contamination, photocatalytic H2 production has become an essential issue. Co‐catalysts play a critical role in improving photocatalytic H2 generation of photocatalysts. However, co‐catalysts frequently need additional synthesis steps for loading on the surface of photocatalysts, and the interface contact between the co‐catalyst and the photocatalyst is insufficient. Herein, a CdS/MoS2 nanooctahedron heterostructure is prepared through the in situ sulfidation of CdMoO4 nanooctahedrons. MoS2 as the co‐catalyst provides active sites for H2 generation and enhances the separation of photo‐generated carriers. Furthermore, the sulfidation of CdMoO4 precursors ensures a tight contact interface by S atoms between CdS and MoS2, which is beneficial to the electrons transfer from CdS to MoS2, thus markedly improving the photocatalytic H2 evolution activity. The obtained optimum CdS/MoS2 nanooctahedrons exhibit a better photocatalytic H2 generation activity than those of pure CdS, pure MoS2, and even CdS/MoS2 by hydrothermal synthesis under visible light irradiation. In addition, solar‐driven biomass upgrading of furfural alcohol, bacterial cellulose membrane, bioplastic wastes upgrading of polylactic acid (PLA), polyethylene terephthalate (PET), and their reforming to H2 are also performed and demonstrate an inexpensive route to drive aqueous proton reduction to H2 through waste biomass oxidation.

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Section: Introductionmentioning

confidence: 99%

Synthesis of CdS/MoS₂ Nanooctahedrons Heterostructure with a Tight Interface for Enhanced Photocatalytic H₂ Evolution and Biomass Upgrading

Zhao

Dong

et al. 2020

Solar RRL

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“…Different from photocatalysis, pyroelectric catalysis occurs under temperature variation instead of light excitation 24,25 . The pyro-generated positive and negative charges initiate the redox reactions, including water splitting and reactive oxygen species (ROS) generation [26][27][28] . Excitingly, the smart combination of photothermal agents and pyroelectric materials decomposes the tumor interstitial uid to reduce TIFP via pyroelectric catalysis-based water splitting and ablates tumor ECM, proteins, and broblasts to reduce TISP via hyperpyrexia.…”

Section: Introductionmentioning

confidence: 99%

Pyroelectric Catalysis-Based “Nano-Lymphatic” Reduces Tumor Interstitial Pressure for Enhanced Penetration and Hydrodynamic Therapy

Cong

et al. 2021

ACS Nano

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Owing to de ciency of lymphatic re ux in the tumor, the retention of tumor interstitial uid causes the aggravation of tumor interstitial pressure (TIP), which leads to unsatisfactory tumor penetration of nanomedicine. It is the main inducement of tumor recurrence and metastasis. Herein, we design a pyroelectric catalysis-based "Nano-lymphatic" to decrease the TIP for enhanced tumor penetration and treatments. It realizes photothermal therapy and decomposition of tumor interstitial uid under NIR-II laser irradiation after reaching the tumor, which reduces the TIP for enhanced tumor penetration.Simultaneously, reactive oxygen species generated during the pyroelectric catalysis can further damage deep tumor stem cells. The results indicate that the "Nano-lymphatic" relieves 52% of TIP, leading to enhanced tumor penetration, which effectively inhibits the tumor proliferation (93.75%) and recurrence.Our nding presents a novel strategy to reduce TIP by pyroelectric catalysis for enhanced tumor penetration and improved treatments, which is of great signi cance for drug delivery.

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“…It will also introduce a carbon resource in the carbon-cycling which is crucial in the sustainable development of the earth [ 5 , 6 ]. Thus far, extensive works have witnessed great interest in semiconductors such as TiO 2 [ 7 , 8 , 9 , 10 ], Cu 2 O [ 11 , 12 ], CdS [ 13 , 14 ] and g-C 3 N 4 [ 15 , 16 ], with lots of experimental investigations focusing on promoting the migration rate of induced charges. However, more studies are required to uncover novel and effective ideas, properties, and aspects of the CO 2 conversion catalysts to further advance the present state of knowledge and reaction performance to the next level.…”

Section: Introductionmentioning

confidence: 99%

Improving the Catalytic CO2 Reduction on Cs2AgBiBr6 by Halide Defect Engineering: A DFT Study

et al. 2021

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Pb-free double halide perovskites have drawn immense attention in the potential photocatalytic application, due to the regulatable bandgap energy and nontoxicity. Herein, we first present a study for CO2 conversion on Pb-free halide perovskite Cs2AgBiBr6 under state-of-the-art first-principles calculation with dispersion correction. Compared with the previous CsPbBr3, the cell parameter of Cs2AgBiBr6 underwent only a small decrease of 3.69%. By investigating the adsorption of CO, CO2, NO, NO2, and catalytic reduction of CO2, we found Cs2AgBiBr6 exhibits modest adsorption ability and unsatisfied potential determining step energy of 2.68 eV in catalysis. We adopted defect engineering (Cl doping, I doping and Br-vacancy) to regulate the adsorption and CO2 reduction behavior. It is found that CO2 molecule can be chemically and preferably adsorbed on Br-vacancy doped Cs2AgBiBr6 with a negative adsorption energy of −1.16 eV. Studying the CO2 reduction paths on pure and defect modified Cs2AgBiBr6, Br-vacancy is proved to play a critical role in decreasing the potential determining step energy to 1.25 eV. Finally, we probe into the electronic properties and demonstrate Br-vacancy will not obviously promote the process of catalysis deactivation, as there is no formation of deep-level electronic states acting as carrier recombination center. Our findings reveal the process of gas adsorption and CO2 reduction on novel Pb-free Cs2AgBiBr6, and propose a potential strategy to improve the efficiency of catalytic CO2 conversion towards practical implementation.

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Pyroelectric effect in CdS nanorods decorated with a molecular Co-catalyst for hydrogen evolution

Cited by 154 publications

References 39 publications

Synthesis of CdS/MoS₂ Nanooctahedrons Heterostructure with a Tight Interface for Enhanced Photocatalytic H₂ Evolution and Biomass Upgrading

Synthesis of CdS/MoS₂ Nanooctahedrons Heterostructure with a Tight Interface for Enhanced Photocatalytic H₂ Evolution and Biomass Upgrading

Pyroelectric Catalysis-Based “Nano-Lymphatic” Reduces Tumor Interstitial Pressure for Enhanced Penetration and Hydrodynamic Therapy

Improving the Catalytic CO2 Reduction on Cs2AgBiBr6 by Halide Defect Engineering: A DFT Study

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Pyroelectric effect in CdS nanorods decorated with a molecular Co-catalyst for hydrogen evolution

Cited by 154 publications

References 39 publications

Synthesis of CdS/MoS2 Nanooctahedrons Heterostructure with a Tight Interface for Enhanced Photocatalytic H2 Evolution and Biomass Upgrading

Synthesis of CdS/MoS2 Nanooctahedrons Heterostructure with a Tight Interface for Enhanced Photocatalytic H2 Evolution and Biomass Upgrading

Pyroelectric Catalysis-Based “Nano-Lymphatic” Reduces Tumor Interstitial Pressure for Enhanced Penetration and Hydrodynamic Therapy

Improving the Catalytic CO2 Reduction on Cs2AgBiBr6 by Halide Defect Engineering: A DFT Study

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Synthesis of CdS/MoS₂ Nanooctahedrons Heterostructure with a Tight Interface for Enhanced Photocatalytic H₂ Evolution and Biomass Upgrading

Synthesis of CdS/MoS₂ Nanooctahedrons Heterostructure with a Tight Interface for Enhanced Photocatalytic H₂ Evolution and Biomass Upgrading