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Dong Y, Ma Y, Shu A, Yan Z, Wang H, Wu Y. In-situ construction of N-doped Zn 0.6Cd 0.4S/oxygen vacancy-rich WO 3 Z-scheme heterojunction compound for boosting photocatalytic hydrogen production. J Colloid Interface Sci 2024; 678:1099-1108. [PMID: 39243476 DOI: 10.1016/j.jcis.2024.09.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2024] [Revised: 08/24/2024] [Accepted: 09/01/2024] [Indexed: 09/09/2024]
Abstract
Photocatalytic water splitting technology for H2 production represents a promising and sustainable approach to clean energy generation. In this study, a high concentration of oxygen vacancies was introduced into tungsten trioxide (WO3) to create a vacancy-rich layer. This modified WO3 (WO3-x) was then combined with N-doped Zn0.6Cd0.4S through a hydrothermal synthesis, resulting in the formation of a Z-scheme heterojunction composite aimed at enhancing photocatalytic performance. Under visible light, the H2 production activity of the composite reached an impressive 8.52 mmol·g-1 without adding co-catalyst Pt. This corresponds to enhancements of 7.82 and 4.39 times the production yield of pure ZCS and ZCSN, respectively. However, the hydrogen production increased to 21.98 mmol·g-1 when Pt was added as a co-catalyst. Furthermore, an array of characterizations were employed to elucidate the presence of oxygen vacancies and the establishment of the Z-scheme heterojunction. This structural enhancement significantly facilitates the utilization of photo-generated electrons while effectively preventing photo-corrosion of ZCSN, thus improving material stability. Our study provides a new scheme for the incorporation of oxygen-rich vacancy and the construction of Z-scheme heterojunction, demonstrating a synergistic effect that greatly advances photocatalytic performance.
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Affiliation(s)
- Yuxin Dong
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, PR China
| | - Yueting Ma
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, PR China
| | - Aoqiang Shu
- Key Laboratory of Environment Biology and Pollution Control, College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Zhiyong Yan
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, PR China
| | - Hou Wang
- Key Laboratory of Environment Biology and Pollution Control, College of Environmental Science and Engineering, Hunan University, Changsha 410082, PR China
| | - Yan Wu
- College of Environment and Ecology, Hunan Agricultural University, Changsha 410128, PR China.
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Qi Y, Zhang Z, Wu Z, Qin Z, Zhou Y, Yang X. Composite System of Lauryl Glucoside and Lauryl Glycoside Sulfosuccinate: Properties and Applications in Vitamin E Nanoemulsions. Chempluschem 2024; 89:e202400058. [PMID: 38578659 DOI: 10.1002/cplu.202400058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 04/05/2024] [Accepted: 04/05/2024] [Indexed: 04/06/2024]
Abstract
The synergistic effect of surfactant compounding on performance can be leveraged to enhance product application performance. An investigation of the surface tension and emulsification properties revealed the complex synergistic effect of the composite system comprising lauryl glucoside (LG) and lauryl glycoside sulfosuccinate (LG-SS). The composite system was used as an emulsifier for vitamin E (VE) emulsification. VE nanoemulsions with high VE content were successfully prepared. The nanoemulsion appears homogeneous and transparent and has an average size of approximately 200 nm. It has better temperature and centrifugal stability, an antioxidant capacity 2.89 times that of untreated VE, and is not easily oxidized and deactivated. In this study, we successfully constructed a complex system of LG and its derivatives and applied it to VE emulsification - this is a step toward expanding the effective application of glycosides and their derivative composite systems in food, pharmaceutics, and other industries.
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Affiliation(s)
- Yunqin Qi
- Department Bio-based Functional Surfactant Research Department, Institution 1 China Research Institute of Daily Chemical Industry, Institution 2 Shanxi Key Laboratory of Functional Surfactants, Address 34 Wenyuan Street, Taiyuan, Shanxi Province, 030001, P.R. China
| | - Zhihui Zhang
- Department Bio-based Functional Surfactant Research Department, Institution 1 China Research Institute of Daily Chemical Industry, Institution 2 Shanxi Key Laboratory of Functional Surfactants, Address 34 Wenyuan Street, Taiyuan, Shanxi Province, 030001, P.R. China
| | - Zhiyu Wu
- Department Bio-based Functional Surfactant Research Department, Institution 1 China Research Institute of Daily Chemical Industry, Institution 2 Shanxi Key Laboratory of Functional Surfactants, Address 34 Wenyuan Street, Taiyuan, Shanxi Province, 030001, P.R. China
| | - Ziyu Qin
- Department Bio-based Functional Surfactant Research Department, Institution 1 China Research Institute of Daily Chemical Industry, Institution 2 Shanxi Key Laboratory of Functional Surfactants, Address 34 Wenyuan Street, Taiyuan, Shanxi Province, 030001, P.R. China
| | - Yuan Zhou
- Department Bio-based Functional Surfactant Research Department, Institution 1 China Research Institute of Daily Chemical Industry, Institution 2 Shanxi Key Laboratory of Functional Surfactants, Address 34 Wenyuan Street, Taiyuan, Shanxi Province, 030001, P.R. China
| | - Xiuquan Yang
- Department Bio-based Functional Surfactant Research Department, Institution 1 China Research Institute of Daily Chemical Industry, Institution 2 Shanxi Key Laboratory of Functional Surfactants, Address 34 Wenyuan Street, Taiyuan, Shanxi Province, 030001, P.R. China
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Zhang Y, Li S, Hu X, Fang Y, Duan R, Chen Q. W-N heteroatom-interface in melon carbon nitride/N-doped tungsten oxide Z-Scheme photocatalyst toward improved photocatalytic hydrogen generation activity. J Colloid Interface Sci 2024; 659:94-104. [PMID: 38159493 DOI: 10.1016/j.jcis.2023.12.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/18/2023] [Accepted: 12/26/2023] [Indexed: 01/03/2024]
Abstract
The construction of heterointerface in photocatalyst is an efficient approach to boost the separation and utilization efficiency of charge carriers, which is challenging and crucial in photocatalysis. Here, the construction of melon-structured carbon nitride/N-doped WO3 (MCN/NWx) heterojunction photocatalyst was achieved by a method of prealcoholysis combined with thermal polymerization, where N-doping of WO3 was achieved in-situ in the formation of heterojunction. The promoted charge separation efficiency was realized through the charge transfer from the conduction band of N-doped WO3 to the valence band of the MCN. Density functional theory calculation results showed that the formation of the W-N heteroatom-interface led to the increase of density of states at the heterointerface and decrease of the band gap. The MCN/NWx nanocomposite featured a metallic band structure of the nanocomposite photocatalysts, resulting in the enhanced photocatalytic activity. The photocatalytic hydrogen evolution activity of the MCN/NW2 was enhanced about 2.5 times than that of MCN. This research provides a novel insight into the construction of a novel heteroatom-junction that boosts the separation efficiency of charge carriers, and thereby improves the photocatalytic activity.
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Affiliation(s)
- Yuanrong Zhang
- School of Materials Science & Engineering, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan 250022, Shandong, China
| | - Shuaitao Li
- School of Materials Science & Engineering, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan 250022, Shandong, China
| | - Xun Hu
- School of Materials Science & Engineering, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan 250022, Shandong, China.
| | - Yanfen Fang
- College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang 443002, China.
| | - Ran Duan
- Ms Ran Duan, Institute of Chemistry, Chinese Academy of Sciences, Zhongguancun North First Street 2, Beijing 100190, China
| | - Qifeng Chen
- School of Materials Science & Engineering, University of Jinan, No. 336, West Road of Nan Xinzhuang, Jinan 250022, Shandong, China.
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