Facile ball-milling synthesis of carbon nitride Z-scheme heterojunction for dramatically enhanced photocatalytic degradation of environmental pollutants

IF 4.1 3区化学 Q2 CHEMISTRY, PHYSICAL

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-06-09 DOI:10.1016/j.jphotochem.2025.116546

Di Wang , Yingying Zhu , Jinze Li , Wensheng Yang , Yulin Zhao , Geng Chen

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引用次数: 0

Abstract

The Z-scheme heterojunctions have garnered significant attention in photocatalysis due to their enhanced charge carrier separation and transport capabilities. In this study, a novel Z-scheme heterojunction composed of phosphorus-doped carbon nitride (P-C₃N₄) and manganese-doped carbon nitride (Mn-C₃N₄) was constructed via a simple and efficient ball milling method. Compared to the pristine g-C₃N₄, P-C₃N₄, and Mn-C₃N₄, the P-C₃N₄/Mn-C₃N₄ Z-scheme heterojunction demonstrated a substantial improvement in photocatalytic performance. This enhancement is attributed to the optimized energy band alignment and intimate interface contact between the two components, which promote efficient charge carrier separation, accelerate electron transport, and improve interface stability. Experimental results showed that the P-C₃N₄/Mn-C₃N₄ system achieved complete degradation (100 %) of Rhodamine B (RhB) and 91.1 % degradation of tetracycline hydrochloride (TC) within 60 min. Additionally, the system retained over 80 % of its catalytic activity after five cycles, suggesting its promising potential for industrial applications. This study provides a simple, cost-effective, and environmentally friendly approach, offering valuable insights for the design of Z-scheme heterojunctions and innovative C₃N₄-based photocatalysts.

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简单球磨合成氮化碳z型异质结，显著增强光催化降解环境污染物

z型异质结由于其增强的载流子分离和传输能力而在光催化中引起了极大的关注。在本研究中，通过一种简单高效的球磨方法，构建了一种由磷掺杂氮化碳（P-C3N4）和锰掺杂氮化碳（Mn-C3N4）组成的新型z型异质结。与原始的g-C3N4、P-C3N4和Mn-C3N4相比，P-C3N4/Mn-C3N4 Z-scheme异质结的光催化性能有了很大的提高。这种增强是由于优化的能带对准和两组分之间的密切界面接触，促进了有效的载流子分离，加速了电子传递，提高了界面稳定性。实验结果表明，P-C3N4/Mn-C3N4体系在60 min内对罗丹明B （RhB）的降解率为100%，对盐酸四环素（TC）的降解率为91.1%，并且在5个循环后仍保持80%以上的催化活性，具有广阔的工业应用前景。该研究提供了一种简单、经济、环保的方法，为设计z型异质结和创新的c3n4基光催化剂提供了有价值的见解。

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来源期刊

Journal of Photochemistry and Photobiology A-chemistry 化学-物理化学

CiteScore

7.90

自引率

7.00%

发文量

580

审稿时长

48 days

期刊介绍： JPPA publishes the results of fundamental studies on all aspects of chemical phenomena induced by interactions between light and molecules/matter of all kinds. All systems capable of being described at the molecular or integrated multimolecular level are appropriate for the journal. This includes all molecular chemical species as well as biomolecular, supramolecular, polymer and other macromolecular systems, as well as solid state photochemistry. In addition, the journal publishes studies of semiconductor and other photoactive organic and inorganic materials, photocatalysis (organic, inorganic, supramolecular and superconductor). The scope includes condensed and gas phase photochemistry, as well as synchrotron radiation chemistry. A broad range of processes and techniques in photochemistry are covered such as light induced energy, electron and proton transfer; nonlinear photochemical behavior; mechanistic investigation of photochemical reactions and identification of the products of photochemical reactions; quantum yield determinations and measurements of rate constants for primary and secondary photochemical processes; steady-state and time-resolved emission, ultrafast spectroscopic methods, single molecule spectroscopy, time resolved X-ray diffraction, luminescence microscopy, and scattering spectroscopy applied to photochemistry. Papers in emerging and applied areas such as luminescent sensors, electroluminescence, solar energy conversion, atmospheric photochemistry, environmental remediation, and related photocatalytic chemistry are also welcome.