CERAMICS INTERNATIONAL
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2026
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IF 6
Xinyi Shan,Weiyi Ju,Qingyao Wang,Qian Zhu,Jiarui Chen,Na Liu,Chenchen Jia,Ran Geng,Junjie Qi,Shengwen Liao
Addressing the escalating contamination of aquatic ecosystems by industrial dyes and heavy metals such as Cr(VI), this study presents a novel TiO 2 NTs/Cu 2 O-CuO hybrid photoelectrocatalytic system. By integrating anodic oxidation with a controlled hydrothermal process, Cu 2 O-CuO dual-phase heterojunctions were successfully anchored onto TiO 2 nanotube arrays, establishing a cascade-like band alignment for efficient charge carrier separation. The characterization confirms that the energy band structure-comprising TiO 2 NTs (3.08 eV), Cu 2 O (2.11 eV), and CuO (1.77 eV)-significantly extends visible-light absorption and suppresses the recombination of photogenerated electron-hole pairs. Under combined visible-light irradiation and external bias, the system exhibits superior photoelectrocatalytic performance, achieving removal efficiencies of 96.92% for Congo red (CR), 74.87% for methylene blue (MB), and 93.64% for Cr(VI). Mechanistic insights reveal that the mineralization of pollutants is dominated by a synergistic pathway involving direct hole (h + ) oxidation and superoxide radicals (•O 2 − ) derived from O 2 reduction. Furthermore, an ecological toxicity assessment using Vigna angularis seedlings demonstrates that this photoelectrocatalytic process effectively detoxifies treated wastewater, promoting plant growth and restoring ecological safety. This work provides both a robust design principle for high-performance heterojunction photoanodes and a critical framework for evaluating the real-world environmental safety of water purification technologies.
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2016
·Vol. 73
·期 11
·2747-2753
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IF 1.064
Kong Wusong,Qu Hongxia,Chen Peng,Ma Weihua,Xie Huifang
In this study, Cu 2 O-CuO/ZSM-5 nanocomposite was synthesized by the impregnation method, and its catalytic performance for the destruction of AO7 in aqueous solutions was investigated. The morphology, structure and surface element valence state of Cu 2 O-CuO/ZSM-5 were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The operating conditions on the degradation of AO7 by Cu 2 O-CuO/ZSM-5, such as initial pH values, concentration of AO7 and catalyst dosage were investigated and optimized. The results showed that the sample had good catalytic activity for destruction of AO7 in the absence of a sacrificial agent (e.g. H 2 O 2 ): it could degrade 91% AO7 in 140 min at 25 °C and was not restricted by the initial pH of the AO7 aqueous solutions. Cu 2 O-CuO/ZSM-5 exhibited stable catalytic activity with little loss after three successive runs. The total organic carbon and chemical oxygen demand removal efficiencies increased rapidly to 69.36% and 67.3% after 120 min of treatment by Cu 2 O-CuO/ZSM-5, respectively.
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高影响因子
CRYSTENGCOMM
·
2020
·Vol. 22
·期 45
·7808-7815
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IF 3.117
Baolin Liu,Yizhao Li,Kun Wang,Yali Cao
Heterostructured Cu-based oxides have been widely used in many fields, such as energy storage, catalysis, and sensing. Conventional techniques for the synthesis of hybrid oxides are time-consuming and often result in low yields. The scalable preparation of heterostructured Cu-based oxides with adjustable phase composition remains a substantial challenge. We demonstrate a simple and efficient solid-state synthesis strategy for the in situ preparation of Cu2O/CuO heterostructured nanorods approximately 10 nm in width, without the use of solvents and post-calcining processing. Tuning the ratio of reactants enables optimization of the components of the Cu2O/CuO heterostructures and their catalytic activities for the carbon monoxide (CO) oxidation reaction. Benefiting from controllable composition, a synergistic effect, and surface-adsorbed oxygen, the resulting Cu2O/CuO heterostructures (Cu2O/CuO-5) show significantly improved catalytic performance in the CO oxidation reaction process. We provide a new and simple method for synthesizing various metal oxide heterostructures for wide-ranging applications.
研究领域:
材料科学
·
催化化学
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
·
IF 3.9
Zheng Meiru,Liu Ying,Qiao Peng,Wang Xueqin,Guo Xin,Zhang Mei,Zhang Jiaojing,Zhang Jianwei,Feng Fuping
Photocatalysis technologies for degrading organic pollutants have emerged as a promising strategy for environmental remediation. This study aimed to develop efficient photocatalysts by synthesizing TiO 2 -loaded composites derived from CuZnAl layered double hydroxides (LDHs) and assessed their performance in the decomposition of rhodamine B (RhB). CuZnAl-LDH nanosheets were synthesized via coprecipitation and then calcined at high temperatures to obtain CuZnAl layered double oxides (CZA-LDO). By varying the amount of ascorbic acid, the CuO in CZA-LDO was reduced to different extents, thereby varying the ratio of Cu, Cu 2 O and CuO. TiO 2 was then deposited on the surface. The morphology, crystal structure, bonding state, and photocatalytic performance of the composite materials were assessed. When exposed to UV light, the optimized TiO 2 /Cu–Cu 2 O–CuO–0.7 composite material achieved a degradation rate of 96.0% for RhB within 110 min, which was significantly better than TiO 2 /CZA-LDO (46.0%) and other Cu-modified samples (66.2%–77.9%). The enhanced photocatalytic properties of the prepared nanocomposite were ascribed to doping with Cu, Cu 2 O and CuO, which effectively enhanced the electron–hole pair separation efficiency. These findings demonstrate the potential of Cu-Cu 2 O-CuO-LDO-based photocatalysts as effective materials for degrading organic contaminants in environmental remediation. Graphical abstract
研究领域:
环境科学
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材料化学
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光催化
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纳米材料
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污染修复
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高影响因子
ACS Sensors
·
2025
·
IF 9.1
Yaming Hu,Wenshuo Xie,Zhizhi Wang,Jinlong Ma,Linlin Hou,Qi Wang,Feng Xiong,Guanglan Liao,Tielin Shi,Hu Long
The introduction of oxygen vacancies (OVs) into metal oxide micro/nanostructures significantly enhances both catalytic performance and electrical conductivity, thereby boosting their gas-sensing capabilities. However, conventional approaches for engineering oxygen vacancies typically require specialized equipment (e.g., autoclave reactors) and extreme operational conditions (e.g., high temperature and high vacuum), posing substantial challenges for practical applications. Herein, a novel single-step laser-induced technique is developed for fabricating CuOx-based room-temperature acetone sensors under ambient conditions. The technique enables mask-free fabrication of tunable sensing films spanning morphologies from porous networks to nanospheres by precisely modulating the film thickness. Furthermore, oxygen-vacancy self-doping is inherently coupled with the micro/nanostructure growth mechanism, bypassing conventional postsynthesis treatments while preserving process simplicity. The as-prepared CuOx gas sensors with distinct morphologies manifest exceptional room-temperature acetone sensing with a wide response range spanning 0.1–10 ppm. Comparative analysis of nanosphere-based gas sensors conclusively demonstrates that oxygen vacancies constitute a key structural determinant, enabling room-temperature sensing capability in CuOx-based sensors. Moreover, both gas sensors exhibit outstanding selectivity toward acetone against common interferents (NO2, H2, CO2, and CO) and a low detection limit, highlighting their potential for trace acetone gas detection applications.
研究领域:
材料科学
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气体传感技术
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纳米制造
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光学加工
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环境监测
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Haoheng Wu,Yanyan Yu,Ying He,Yun Liu
The development of high-performance, multifunctional catalysts capable of effectively addressing nitroarene hydrogenation remains a significant challenge. In this study, we present a novel approach to catalyst design through the controlled carbonization of a copper–furan dicarboxylate metal–organic framework (Cu-FDCA MOF), resulting in two distinct nanocomposites: oxygen-vacancy-rich Cu/Cu 2 O/CuO@C (synthesized in an argon atmosphere) and conventional CuO (prepared by air calcination). Advanced characterizations, including TEM, XPS, EPR, and BET, reveal that Cu/Cu 2 O/CuO@C possesses 2.3 times more oxygen vacancies and a surface area 97 times greater (106.21 m 2 /g vs. 1.09 m 2 /g) than CuO, which directly correlates with its superior catalytic performance. In the context of nitroarene hydrogenation, Cu/Cu 2 O/CuO@C demonstrates an exceptionally high rate constant (k app = 25.33 × 10 -2 s -1 ), outperforming CuO by a factor of 40. Furthermore, Cu/Cu 2 O/CuO@C maintains 90 % of its catalytic activity after five reaction cycles and can be fully regenerated upon treatment at 400 °C. Through a combination of experimental studies and density functional theory (DFT) calculations, we propose a novel water-derived hydrogen transfer mechanism that challenges conventional understanding of the role of NaBH 4 . Notably, Cu/Cu 2 O/CuO@C also exhibits impressive versatility, efficiently degrading organic dye (Congo red/methylene blue/methyl blue) within three minutes. This work establishes MOF-derived oxygen-deficient nanocomposites as promising platforms for both amine synthesis and environmental decontamination.
研究领域:
材料科学
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催化化学
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环境科学
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2016
·
IF 4.758
Yingchun Li,Minggang Zhao,Jing Chen,Sisi Fan,Jingjing Liang,Longjiang Ding,Shougang Chen
A novel 3D chitosan/multiwalled carbon nanotubes (CNTs) aerogel with snubby CNTs tips emerged on the surface of soft nanosheets was synthesized by ice-templating method. The ideal cooperative effect of phragmoid CS and electrical CNTs offered synthetical properties, such as low density (about 6.3 mg cm −3 ), flexibility, absorption, catalysis capacities, improved electrochemical characteristics and novel applications. This unique architecture showed good specificity to dopamine with ultralow detection limit of 0.3 nM in biosensing applications. Meanwhile, the unique surface of soft nanosheets with snubby CNTs tips makes it an incubative bed for in situ adsorbed growth of nanostructures. Cu 2 O@CuO chipped core-shell nanoparticles were in situ grown onto the soft nanosheets by simple adsorption of Cu 2+ and used for non-enzymatic detection.
研究领域:
材料科学
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纳米技术
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生物传感器
·
电化学
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高影响因子
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