Scientific Reports
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2025
·Vol. 15
·期 1
·1-16
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IF 3.9
Dong Yuqi,Qiao Qing-an,Wang Ruping,Yang Yueyue,Cai Honglan,Gao Hongwei
Environmental pollution caused by industrial waste is an increasing concern, and the design and development of efficient photocatalysts offer promising approaches to address this issue. A series of novel Zn 0.6 Cd 0.4 S/ZnO/g-C 3 N 4 composites were prepared through a calcination‒hydrothermal method. Under visible light, these materials demonstrated exceptional performance in the photodegradation of methylene blue (MB), rhodamine B (RhB), and tetracycline (TC). Among the composite materials, Z 0.6 C 0.4 S/ZnO/CN-35% exhibited the highest degradation efficiencies for MB (98.52%), RhB (99.45%), and TC (98.20%), demonstrating excellent reusability as well. The photocatalytic performance of the catalysts was assessed across various water sources and different pH conditions. The findings revealed that the degradation efficiency for contaminants in seawater, lake water, and tap water closely mirrored that observed in deionized water, suggesting wide adaptability among different aqueous solutions. The exceptional photocatalytic performance of the composite materials can be attributed primarily to the efficient separation and migration of holes (h + ) and electrons (e − ) via well-contacted interfaces. Free radical capture experiments confirmed that hydroxyl radicals (·OH) and superoxide ion radicals (·O 2 - ) play crucial roles in the reaction process. The photocatalytic mechanism was also revealed via density functional theory (DFT) calculations. This work introduced an innovative strategy to design and fabricate novel photocatalysts, emphasizing their extensive applications from both theoretical and experimental aspects.
研究领域:
环境科学
·
材料科学
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DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Jiping Shi,Liuqing Hua,Lu Ruan,Xingjian Zhang,Zhengdao Li,Fengyun Su,Xin Li,Haiquan Xie,Yong Zhou
The ZnIn 2 S 4 nanosheets were successfully synthesized on the surface of compacted stainless steel mesh using a simple solvothermal method, and further modified with Cu x O nanoparticles to form ZnIn 2 S 4 /Cu x O heterojunction photocatalyst via a wet chemistry approach. These photocatalysts were then utilized for photothermal catalytic CO 2 reduction under full spectrum solar light. The experimental results demonstrated that the deposition of the photocatalyst on the flexible substrate effectively prevented the aggregation of ZnIn 2 S 4 nanosheets. The incorporation of Cu x O nanoparticles enhanced the specific surface area of the photocatalyst, and created a Z-scheme heterojunction with ZnIn 2 S 4 to improve the utilization efficiency of photogenerated electrons. It was noteworthy that the dark red Cu x O exhibited a full spectrum response and excellent photothermal effect, thereby facilitating carrier migration and reducing CO 2 catalytic reaction barriers. Consequently, the optimized ZnIn 2 S 4 /Cu x O exhibited significantly enhanced CO 2 to CO yield of 1515.8 μmol m -2 h −1 and CH 4 yield of 1579.4 μmol m -2 h −1 , which was about 7.5 and 7.6 times higher than those achieved by pure ZnIn 2 S 4 , respectively. Furthermore, this study provided detailed insights into the mechanism of photocatalytic CO 2 reduction over composite material as well as valuable guidance for designing immobilized photocatalysts with high activity for CO 2 reduction.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Jianing Li,Juan Chen,Yanhui Ao,Xin Gao,Huinan Che,Peifang Wang
The construction of dual Z-scheme photocatalysts is an effective way to promote the separation and migration of electrons-holes as well as retain their high redox abilities. Herein, a distinctive dual Z-scheme photocatalyst based on phase junction WO 3 and CdS (CW) was successfully fabricated via hydrothermal method and in-situ precipitation process. The as-prepared materials showed the advantages of both phase junction and dual Z-scheme mechanism (promoted utilization of carriers and improved redox potential). As a result, the k app value of 75CW (0.05237 min −1 ) was 29.8 times that of phase junction WO 3 (0.00176 min −1 ) and 2.9 times that of CdS (0.01799 min −1 ) in terms of imidacloprid (IMD) degradation. Trapping experiment and electron spin resonance (ESR) proved the dual Z-scheme mechanism, the key to significantly improve photocatalytic degradation efficiency of WO 3 /CdS nanocomposites. Combined the analysis of liquid chromatography-mass spectrometry (LC-MS) with density functional theory (DFT) calculation, rational degradation pathways of IMD were put forward in detail. This work is excepted to provide new horizons for the construction of dual Z-scheme system with phase junction and the photodegradation of IMD.
研究领域:
环境科学
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材料科学
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化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2021
·
IF 8.067
Zeming Gu,Qi Wang,Xiaoqin Sun,Lingwei Lu,Yuwei Zhang,Ran Wang,Shu Jin,Yinlin Shao,Jun Qian,Xiaoxiang Xu
P-type semiconductivity has been observed in solid solution series (SrTiO 3 ) 1- x (CaCr 0.5 Nb 0.5 O 3 ) x (0.0 ≤ x ≤ 0.15), which all adopt cubic symmetry and own intense absorption in the visible light region. These solid solutions are superior H 2 evolution photocatalysts under visible light illumination (λ ≥ 400 nm). An AQE as high as 1.02 % at 420 ± 20 nm has been achieved at optimal composition (SrTiO 3 ) 0.85 (CaCr 0.5 Nb 0.5 O 3 ) 0.15 which significantly surpasses the parent compounds. Stoichiometric H 2 /O 2 production under visible light illumination has been successfully realized using Z-scheme system containing (SrTiO 3 ) 0.85 (CaCr 0.5 Nb 0.5 O 3 ) 0.15 , WO 3 and I − /IO 3 − redox couple.
研究领域:
材料科学
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能源化学
✓ 已验证
DOI
高影响因子
CATALYSIS TODAY
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2020
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IF 5.825
Zhen-Hong He,Chong-Shan Jiang,Kuan Wang,Zhong-Yu Wang,Na Li,Wei-Tao Wang,Zhao-Tie Liu
Catalytic conversion of CO 2 into methanol is of particular interest as it does not only provide valuable methanol, but also utilize the waste CO 2 . In the present work, a CoO/Co/TiO 2 catalyst was developed and utilized in catalyzing CO 2 to methanol under photothermal conditions. From the results of characterization, the supported Co nanoparticles (NPs) were composed of Co 0 in the bulk, CoO film formed from air oxidation on the surface, and Co 0 at Co NPs-TiO 2 interfaces. This structure provided the possibility for a Z scheme photothermal catalytic system, which revealed a high activity for methanol formation in aqueous media under atmosphere pressure. It was proposed that the light excited electrons from the valence band (VB) of TiO 2 , and the excited electrons could enhance the Co 0 catalytic activity under thermal conditions. The present approach will offer a new strategy to design Co based Z scheme catalysts and further improve the conversion efficiency from CO 2 to fuels.
研究领域:
化学
·
环境科学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 52
·79184-79198
·
IF 5.19
Zhao Yajuan,Dang Pu,Gao Yaqian,Li Yan,Xie Huidong,Yang Chang
Co 3 O 4 /Bi 4 O 7 /Bi 2 O 3 (CBB) composites were prepared, in which Co 3 O 4 was synthesized from Co-MOF as precursor. The peroxymonosulfate (PMS) activated by CBB catalyst under visible light was used to degrade tetracycline (TC). Owing to the synergistic effect of photocatalysis and PMS activation, 98.4% of TC was removed within 60 min. The optimal loading of Co 3 O 4 was determined, and the influence of PMS dosage, initial pH, and disturbing anions on the degradation effect were investigated. The “CBB + Vis + PMS” system showed good reusability, and the degradation was only reduced by 1.7% after 5 cycles. This system also had a good degradation of other five pollutants. The quenching experiment showed that holes (h + ), superoxide radicals (·O 2 − ), and singlet oxygen ( 1 O 2 ) were the main active species. The degradation products of TC were determined by liquid chromatography-mass spectrometry, and the degradation pathway was proposed. Finally, a double Z-scheme degradation mechanism was proposed in the “CBB + Vis + PMS” system. The peroxymonosulfate activated by CBB under visible light to degrade organic pollutants has widespread application prospects in environmental remediation. Graphical abstract
研究领域:
环境科学
·
催化化学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Yi Wang,Jixiang Xu,Jun Wan,Jing Wang,Lei Wang
Developing a photocatalyst for efficient reduction of carbon dioxide (CO 2 ) is a long-term goal to address global climate change. In this work, a tube-like indium oxide@indium phosphide/cuprous oxide ( In 2 O 3 @InP/Cu 2 O) photocatalyst was prepared by annealing-phosphidation of In-Materials of Institute Lavoisier-68 (In-MIL-68) followed by electrodeposition of Cu 2 O, which was used to reduce CO 2 with water under light irradiation . Partial phosphidation of In 2 O 3 endowed In 2 O 3 @InP/Cu 2 O with strong light-harvesting ability. The In 2 O 3 @InP heterojunction combined with in situ loaded Cu 2 O provided a dual Z-scheme heterojunction for efficient electrons-holes separation. Under the synergisms of each component, the optimized In 2 O 3 @InP 60 /Cu 2 O-1 exhibited strong adsorption of CO 2 and excellent photocatalytic performance in CO 2 reduction. The yields of CO and CH 4 were 13.7 and 38.8 μmol g −1 , respectively, after 5 h simulated light illumination, higher than the corresponding yields with In 2 O 3 (CO: 7.2 μmol g −1 , CH 4 : 13.2 μmol g −1 ). This study may provide some insights into the design of specific ternary photocatalysts with dual Z-scheme charge transfer mode for CO 2 reduction.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2023
·
IF 4.5
Dong Liu,Qingfa Gong,Xixi Xu,Shuyun Meng,Yuye Li,Tianyan You
Photoelectrochemical (PEC) aptasensing has been extensively studied for hazardous material (e.g., pesticide residue) detection, with investigation on photoactive materials being their main focus of study. Herein, a cascade Z-scheme [email protected] 2 ( [email protected] 2 ) heterostructure was designed to fabricate a PEC aptasensor for carbendazim (CBZ) detection in tomato. The [email protected] 2 heterostructure was prepared by taking advantage of electrostatic adsorption between components. The cascade Z-scheme electron transfer was verified in [email protected] 2 , resulting in a significantly enlarged photocurrent (e.g., 2.7-fold higher of that at CdTe/MoS 2 ) for the efficient separation of electron-hole pair. The PEC aptasensor was developed based on the principle that the specific binding of aptamer to target on the surface of [email protected] 2 increased the steric hindrance for electron transfer, facilitating a “signal-off” detection mode for CBZ. The fabricated aptasensor offered a linear range of 0.523–5230 nM (0.1–100 ng mL −1 ) with a detection limit of 1.74 × 10 -10 M (0.033 ng mL −1 ) for CBZ detection, and it was successfully applied to tomato sample analysis. This work will stimulate exploration of cascade Z-scheme materials for sensing, and provides a high-performance PEC sensing platform for the detection of various species.
研究领域:
分析化学
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环境科学
·
食品科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）