INORGANIC CHEMISTRY COMMUNICATIONS
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2023
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IF 3.8
Jie Zhou,Beibei Zhu,Lu Wang,Yan Bao,Guofeng Guan
Higher electron transfer efficiency is an important way to improve the activity of photocatalysts. A novel Z-scheme CdS/CeO 2 /g-C 3 N 4 nanocomposite was successfully synthesized by a solvothermal method, and its photocatalytic activity was evaluated by the degradation of phenol. The phase structure, morphology, surface structure, and atomic valence state of the as-obtained photocatalyst were characterized by XRD, SEM, TEM, FT-IR, XPS, and UV–Vis absorption spectroscopy, respectively. The CdS/CeO 2 /g-C 3 N 4 nanocomposite exhibited a remarkable photocatalytic activity and a rapid degradation ability for phenol with a degradation rate of 95 % in 180 min, which was considerably better than those of pure CeO 2 and CdS/CeO 2 under the same conditions, suggesting a synergistic effect in the nanocomposite. The enhancement of the photocatalysis ability of the nanocomposite is mainly attributed to the higher adsorption capacity of three-dimensional porous g-C 3 N 4 and the three-dimensional space electric field formed by its complex with CdS and CeO 2 . The three-dimensional porous structure is not only conducive to the efficient adsorption of pollutants but also provides active sites for photocatalytic reactions. The three-dimensional space and the network interconnection structure are conducive to the directional migration of photogenerated charges and increase the carrier lifetime. In brief, this work provides a new route to the design and synthesis of CdS/CeO 2 /g-C 3 N 4 for colorless organic pollutants photodegradation under visible light.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
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IF 8.355
Jie Xu,Ming Li,Jianhao Qiu,Xiong-Fei Zhang,Yi Feng,Jianfeng Yao
As ionic liquid analogues, deep eutectic solvents (DESs) have been widely used in many fields in past decades. In this work, a PEGylated deep eutectic solvent (PEGylated DES) was used for the solvothermal synthesis of CdS@CeO 2 core-shell material for the first time. The amount of CeO 2 coating has a remarkable influence on the photocatalytic degradation of tetracycline. When the molar ratio of CeO 2 to CdS is 1:1, the degradation rate of tetracycline is 91.5% under visible light (λ > 420 nm), which is about 1.57 and 10.5 times as that of CdS and CeO 2 , respectively. The enhancement of photocatalytic performance is due to the fast separation of photogenerated electrons, the lower recombination of electron-hole pairs and the smaller band gap, which are demonstrated via UV–vis diffuse, photocurrent density, electrochemical impedance spectroscopy, photoluminescence and Mott-Schokkty measurements. This work provides a new way for the design of a core-shell metal sulfide photocatalyst that can be used in environmental remediation.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2023
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IF 13.6
Yang Wan,Huijie Wang,Jiejing Liu,Xin Liu,Xianghai Song,Weiqiang Zhou,Jisheng Zhang,Pengwei Huo
Waste plastics have posed enormous to the environment, but their recycling, especially polyethylene terephthalate plastics, was still a huge challenge. Here, CdS/CeO 2 was used as the photocatalyst to promote the degradation of PET-12 plastics by activating peroxymonosulfate (PMS) synergistic photocatalytic system. The results showed that 10 % CdS/CeO 2 had the best performance under the illumination condition, and the weight loss rate of PET-12 could reach 93.92 % after adding 3 mM PMS. The effects of important parameters (PMS dose and co-existing anions) on PET-12 degradation were systematically studied, and the excellent performance of the photocatalytic-activated PMS system was verified by comparison experiments. SO 4 •− contributed the most to the degradation performance of PET-12 plastics, which was demonstrated by electron paramagnetic resonance (EPR) and free radical quenching experiments. Furthermore, the results of GC showed that the gas products including CO, and CH 4 . This indicated that the mineralized products could be further reduced to hydrocarbon fuel under the action of the photocatalyst. This job supplied a new idea for the photocatalytic treatment of waste microplastics in the water, which will help recycle waste plastics and recycle carbon resources.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CLAY SCIENCE
·
2025
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IF 5.8
Yan Zhang,Xinhui Huang,Yaxue Zhang,Letian Lv,Chengyuan Su,Shu Gao,Zhi Huang,Menglin Chen,Xianfeng Lin
We prepare CdS-CeO 2 /sepiolite materials in a one-step process and characterize their structural, morphological, and optical properties. CdS-CeO 2 /sepiolite displays enhanced adsorption of the environmentally hazardous dye Rhodamine B (RhB), up to 34.92 mg/g. Harnessing synergy between adsorption and photocatalysis, CdS-CeO 2 /sepiolite removes 98.57 % of RhB from solution after 150 min of visible light illumination and is robust to a wide pH range. Quenching experiments and electron spin resonance (ESR) indicates that singlet oxygen and holes are the main reactive groups during photocatalytic degradation. CdS and CeO 2 hinder the recombination of photogenerated electron-hole pairs, accelerate charge transfer, and enhance visible light absorption. These CdS-CeO 2 /sepiolite materials have potential application in the efficient photodegradation of dye in a wide range of pH.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Yujie Ma,Baowei Shen,Yaping Sun,Lingyu Zhang,Yu Xia,Xing Wang,Yong Liu,Jian Zhao,Yuhua Feng
In nanosynthesis, precise structural tailoring is crucial for modulating the properties of hybrid materials. For photocatalysts, structural configuration of the composed materials is a key factor for improving their efficiency. In this study, the CdS-CeO 2 hybrids in core-satellite and core-shell structures were successfully synthesized via accurate kinetic control in a seed-mediated growth process. Due to the Z -scheme charge transfer mechanism, excellent photocatalytic activity was observed in photocatalytic degradation of methylene blue (MB) and CO 2 reduction reactions (CO 2 RR). Notably, the Janus-type core-satellite structure exhibited significantly higher photocatalytic activity than the core-shell structure. Mechanistic analysis revealed that the spatial separation of the CdS and CeO 2 domains in core-satellite structure led to continuous fast separation and transfer of the photogenerated holes and electrons (h + and e − ) to different exposed domains, whereby can be depleted immediately, resembling the electron sink effect. While in core-shell structure, the transfer of the excited carriers to different domain would inevitably cause charge accumulation at the inner core, which obstruct the further charge separation and transfer. Our study provides an effective general way for promoting the charge separation efficiency in hybrid photocatalyst, which is helpful for the rational design and synthesis of advanced photocatalyst.
✓ 已验证
DOI
高影响因子
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