Enhanced Photocatalytic Hydrogen Production Activity Driven by TiO2/(MoP/CdS): Insights from Powder Particles to Thin Films

IF 3.7 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Langmuir Pub Date : 2024-09-26 DOI:10.1021/acs.langmuir.4c02635

Jiajia Wang, Jinfeng Tian, Peng Han, Lingxiao Song, Wei Wang, Keying Lin, Dong Feng, Baojun Ma

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Abstract

Transitioning from powder photocatalysts to thin film photocatalysts is one of the necessary steps toward industrializing photocatalytic hydrogen production. Herein, we reported the integration of non-noble metal cocatalyst MoP decorated with TiO₂ and CdS, forming TiO₂/(MoP/CdS) for ultraviolet–visible light utilization. The designed powder TiO₂/(MoP/CdS) composites achieved a superior hydrogen production rate of 42.2 mmol g^–1 h^–1, which is 30.1 times that of TiO₂/CdS, performing the highest activity among the TiO₂-CdS-based composite photocatalysts. Moreover, we fabricated a thin film from TiO₂/(MoP/CdS) powder, which exhibited comparable photocatalytic activity for hydrogen production, achieving 35.5 mmol g^–1 h^–1 and maintaining long-term stability for 150 h. The outstanding performance was attributed to the ability of the TiO₂/(MoP/CdS) composite photocatalysts to absorb both visible and ultraviolet light. Additionally, the heterojunction formed between TiO₂ and CdS also played a significant role in the overall photocatalyst activity. This cost-effective catalyst holds promise for future large-scale industrial applications.

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TiO2/(MoP/CdS)增强光催化制氢活性：从粉末颗粒到薄膜的启示

从粉末光催化剂过渡到薄膜光催化剂是实现光催化制氢工业化的必要步骤之一。在此，我们报告了将非贵金属协同催化剂 MoP 与 TiO2 和 CdS 进行装饰，形成 TiO2/(MoP/CdS)，用于紫外-可见光的利用。所设计的粉末 TiO2/（MoP/CdS）复合材料的产氢率高达 42.2 mmol g-1 h-1，是 TiO2/CdS 的 30.1 倍，在基于 TiO2-CdS 的复合光催化剂中活性最高。此外，我们还利用 TiO2/（MoP/CdS）粉末制备了一层薄膜，该薄膜在制氢方面表现出了相当的光催化活性，达到了 35.5 mmol g-1 h-1，并能保持 150 h 的长期稳定性。此外，TiO2 和 CdS 之间形成的异质结在整个光催化剂活性中也发挥了重要作用。这种具有成本效益的催化剂有望在未来大规模工业应用。

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来源期刊

Langmuir 化学-材料科学：综合

CiteScore

6.50

自引率

10.30%

发文量

1464

审稿时长

2.1 months

期刊介绍： Langmuir is an interdisciplinary journal publishing articles in the following subject categories: Colloids: surfactants and self-assembly, dispersions, emulsions, foams Interfaces: adsorption, reactions, films, forces Biological Interfaces: biocolloids, biomolecular and biomimetic materials Materials: nano- and mesostructured materials, polymers, gels, liquid crystals Electrochemistry: interfacial charge transfer, charge transport, electrocatalysis, electrokinetic phenomena, bioelectrochemistry Devices and Applications: sensors, fluidics, patterning, catalysis, photonic crystals However, when high-impact, original work is submitted that does not fit within the above categories, decisions to accept or decline such papers will be based on one criteria: What Would Irving Do? Langmuir ranks #2 in citations out of 136 journals in the category of Physical Chemistry with 113,157 total citations. The journal received an Impact Factor of 4.384*. This journal is also indexed in the categories of Materials Science (ranked #1) and Multidisciplinary Chemistry (ranked #5).