{"title":"基于石墨二炔(C2H2n-2)的空心球形 Cu2O/GDY 和 NiS 双催化剂的协同效应可促进光催化氢气进化","authors":"","doi":"10.1016/j.jece.2024.114181","DOIUrl":null,"url":null,"abstract":"<div><div>The control of carrier separation morphology and efficiency is a key strategy for preparing high-performance photocatalysts. In this study, Cu<sub>2</sub>O/graphdiyne was introduced into NiS in the form of hollow nanospheres, creating a novel composite material. This method improved upon the traditional graphdiyne fabrication processes that typically use copper foil. Through the hollow spherical structure, both internal and external surface light scattering and reflection were significantly enhanced, indirectly enhancing the light absorption rate of the photocatalyst and photocatalytic activity. Ultraviolet-visible spectroscopy and photoelectrochemical results showed that using NiS as the external cocatalyst and Cu<sub>2</sub>O as the internal cocatalyst are the driving factors for the hydrogen evolution reaction, with a synergistic effect that accelerated the reaction. Such synergistic catalytic effects are rare in traditional photocatalytic systems, indicating their potential application value in enhancing catalytic efficiency. The overall performance was more than 22 times that of Cu<sub>2</sub>O/graphdiyne alone and more than 2.6 times that of NiS. Additionally, the electronic band structures and reaction mechanisms can be elucidated through Density Functional Theory (DFT) calculations, Ultraviolet Photoelectron Spectroscopy (UPS) and UV-Vis spectroscopy. These findings not only offer practical guidance but also underscore the significance of precisely manipulating the components of composite catalysts to optimize performance.</div></div>","PeriodicalId":15759,"journal":{"name":"Journal of Environmental Chemical Engineering","volume":null,"pages":null},"PeriodicalIF":7.4000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synergistic effect of graphdiyne (C2H2n-2) based hollow spherical Cu2O/GDY and NiS dual cocatalysts boosting photocatalytic hydrogen evolution\",\"authors\":\"\",\"doi\":\"10.1016/j.jece.2024.114181\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The control of carrier separation morphology and efficiency is a key strategy for preparing high-performance photocatalysts. In this study, Cu<sub>2</sub>O/graphdiyne was introduced into NiS in the form of hollow nanospheres, creating a novel composite material. This method improved upon the traditional graphdiyne fabrication processes that typically use copper foil. Through the hollow spherical structure, both internal and external surface light scattering and reflection were significantly enhanced, indirectly enhancing the light absorption rate of the photocatalyst and photocatalytic activity. Ultraviolet-visible spectroscopy and photoelectrochemical results showed that using NiS as the external cocatalyst and Cu<sub>2</sub>O as the internal cocatalyst are the driving factors for the hydrogen evolution reaction, with a synergistic effect that accelerated the reaction. Such synergistic catalytic effects are rare in traditional photocatalytic systems, indicating their potential application value in enhancing catalytic efficiency. The overall performance was more than 22 times that of Cu<sub>2</sub>O/graphdiyne alone and more than 2.6 times that of NiS. Additionally, the electronic band structures and reaction mechanisms can be elucidated through Density Functional Theory (DFT) calculations, Ultraviolet Photoelectron Spectroscopy (UPS) and UV-Vis spectroscopy. These findings not only offer practical guidance but also underscore the significance of precisely manipulating the components of composite catalysts to optimize performance.</div></div>\",\"PeriodicalId\":15759,\"journal\":{\"name\":\"Journal of Environmental Chemical Engineering\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":7.4000,\"publicationDate\":\"2024-09-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Environmental Chemical Engineering\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2213343724023121\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, CHEMICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Environmental Chemical Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2213343724023121","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
Synergistic effect of graphdiyne (C2H2n-2) based hollow spherical Cu2O/GDY and NiS dual cocatalysts boosting photocatalytic hydrogen evolution
The control of carrier separation morphology and efficiency is a key strategy for preparing high-performance photocatalysts. In this study, Cu2O/graphdiyne was introduced into NiS in the form of hollow nanospheres, creating a novel composite material. This method improved upon the traditional graphdiyne fabrication processes that typically use copper foil. Through the hollow spherical structure, both internal and external surface light scattering and reflection were significantly enhanced, indirectly enhancing the light absorption rate of the photocatalyst and photocatalytic activity. Ultraviolet-visible spectroscopy and photoelectrochemical results showed that using NiS as the external cocatalyst and Cu2O as the internal cocatalyst are the driving factors for the hydrogen evolution reaction, with a synergistic effect that accelerated the reaction. Such synergistic catalytic effects are rare in traditional photocatalytic systems, indicating their potential application value in enhancing catalytic efficiency. The overall performance was more than 22 times that of Cu2O/graphdiyne alone and more than 2.6 times that of NiS. Additionally, the electronic band structures and reaction mechanisms can be elucidated through Density Functional Theory (DFT) calculations, Ultraviolet Photoelectron Spectroscopy (UPS) and UV-Vis spectroscopy. These findings not only offer practical guidance but also underscore the significance of precisely manipulating the components of composite catalysts to optimize performance.
期刊介绍:
The Journal of Environmental Chemical Engineering (JECE) serves as a platform for the dissemination of original and innovative research focusing on the advancement of environmentally-friendly, sustainable technologies. JECE emphasizes the transition towards a carbon-neutral circular economy and a self-sufficient bio-based economy. Topics covered include soil, water, wastewater, and air decontamination; pollution monitoring, prevention, and control; advanced analytics, sensors, impact and risk assessment methodologies in environmental chemical engineering; resource recovery (water, nutrients, materials, energy); industrial ecology; valorization of waste streams; waste management (including e-waste); climate-water-energy-food nexus; novel materials for environmental, chemical, and energy applications; sustainability and environmental safety; water digitalization, water data science, and machine learning; process integration and intensification; recent developments in green chemistry for synthesis, catalysis, and energy; and original research on contaminants of emerging concern, persistent chemicals, and priority substances, including microplastics, nanoplastics, nanomaterials, micropollutants, antimicrobial resistance genes, and emerging pathogens (viruses, bacteria, parasites) of environmental significance.