CHINESE CHEMICAL LETTERS
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2024
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IF 9.4
Qinghong Pan,Huafang Zhang,Qiaoling Liu,Donghong Huang,Da-Peng Yang,Tianjia Jiang,Shuyang Sun,Xiangrong Chen
ABSTRACT Quantitative determination of tetracycline (TC) in environment and foods is of great importance, as excessive residues might have negative effects on human health and environmental risks. Herein, a self-powered molecularly imprinted photoelectrochemical (PEC) sensor based on the ZnO/C photoanode and the Fe-doped CuBi 2 O 4 (CBFO) photocathode is developed for the sensitive detection of TC. The photocathodic current can be amplified by the efficient electron transfer caused by the Fermi energy level gap between the photoanode and photocathode. Furthermore, molecularly imprinted polymers (MIPs) at photocathode can selectivity identify the TC templates and thus improve the specificity. Under the optimal conditions, the sensor has a linear range of 10 ‒2 -1.0 × 10 5 nmol/L, and a limit of detection (LOD) of 0.007 nmol/L (S/N = 3). More crucially, the milk sample detection is carried out using the as-prepared sensor, and the outcome is satisfactory. The research gives us a novel sensing platform for quick and accurate antibiotic (like TC) in environment and food monitoring.
研究领域:
环境科学
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食品科学
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分析化学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Junli Tian,Lianxue Wei,Jiaqi Hu,Jinfeng Lu
Given the limitations of conventional advanced oxidation processes (AOPs), a coupling system by integrating sulfate radical-based AOPs ( SO 4 - -AOPs) with photocatalysis for boosting the peroxymonosulfate (PMS) activation under visible light was established. Herein, we developed a novel 5 %Bi 3 O 4 Br/CuBi 2 O 4 catalyst for rapid and efficient degradation of tetracycline (TC). The rate constant (k) for degrading TC in 5 %Bi 3 O 4 Br/CuBi 2 O 4 + PMS + Vis system was 3.69 min −1 , which is 30.62, 2.18 times higher than that of photocatalysis and SO 4 - -AOPs alone, respectively. The quenching experiments verified that h + , OH, O 2 – and 1 O 2 were dominant contributors for the degradation of TC. EPR and quantitative analysis further implied illumination was favor in achieving mass production of OH and 1 O 2 . Moreover, O 2 – and SO 4 - might convert into 1 O 2 in the 5 %Bi 3 O 4 Br/CuBi 2 O 4 + PMS + Vis system. The degradation pathways of TC were proposed and the toxicity of intermediates was much lower than that of untreated TC. Besides, the 5 %Bi 3 O 4 Br/CuBi 2 O 4 + PMS + Vis system showed over 90% removal rate in a wide pH range (3–11) or different concentrations of inorganic anions. This work provided a worthy reference in developing an environmentally-friendly system for the high-efficiency degradation of antibiotics.
研究领域:
环境科学
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催化化学
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高影响因子
Journal of Energy Chemistry
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2025
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IF 14.9
Jing Gao,Qitao Liu,Haotian Wang,Muhammad Bilal Akbar,Zhihua Wu,Jiabo Le,Jianming Li,Qinglu Liu,Yongbo Kuang
CuBi 2 O 4 (CBO) photocathodes hold significant promise for efficient photoelectrochemical (PEC) water splitting due to their favorable band gap and theoretical onset potential. However, their practical application is hindered by poor charge separation efficiency. Herein, we introduce a characteristic in-situ solution Fe-doping strategy that markedly improves photoelectrochemical performance of CBO, doubling the photocurrent density and achieving an unprecedented 190 mV anodic shift in the onset potential. By integrating with an electrochemical oxidation post-treatment, a record incident photon-to-current efficiency (IPCE) exceeding 40% at 0.6 V vs. RHE under visible light illumination is achieved. The versatility of the doping strategy is demonstrated across CBO photocathodes synthesized by different methods with various morphologies, grain sizes, and crystallinities. Mechanistic studies reveal that the gradient distribution of Fe 3+ ions generates an internal electric field that facilitates efficient charge separation and increases acceptor density. The strong Fe–O bonding also enhances structural stability against photo-induced corrosion. Notably, our investigation uncovers the non-temperature-dependent nature of CBO photocurrent, indicating that PEC performance enhancement primarily depends on reducing carrier recombination rather than improving bulk conductivity. This work lays the groundwork for future advancements in water splitting performance of CBO photocathodes, offering a complementary strategy to conventional methods for enhancing charge separation efficiency.
研究领域:
材料科学
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能源化学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yingying Zhang,Shuai Dong,Chong Wan,Yuqi Zhu,Suhang Chen,Fengqi Zhao,Kangzhen Xu
Ammonium perchlorate (AP), cyclotrimethylenetrinitramine (RDX) and 1,1’-dihydroxy-5,5’-ditetrazolium dihydroxyl ammonium (TKX-50) play a vital role in aerospace and military applications. However, improving their thermal decomposition performance remains a critical technical bottleneck. In this study, CuBi 2 O 4 (CBO) was selected as combustion catalyst due to its superior thermal stability and structural tunability, and Fe doping strategy was introduced to modulate its electronic band structure. The effective incorporation of Fe in CBO not only induces lattice distortion, but also stabilizes the thermodynamic nonequilibrium state, thereby reducing the energy barrier for electron transfer and effectively suppressing carrier recombination. Fe-CBO exhibits narrow band gap (1.73 eV), excellent electron transport properties and abundant active sites, which can significantly improve catalytic performance. Systematic optimization of Fe-doping contents reveals that 15 %Fe-CBO has optimal catalytic performance, reducing thermal decomposition peak temperatures of AP, RDX, and TKX-50 by 76.3, 5.7 and 36.3 °C respectively, while lowering apparent activation energies to 125.26, 182.34 and 164.60 kJ·mol −1 . Laser ignition experiments further demonstrates that 15 %Fe-CBO can enhance flame brightness, expand the flame propagation area of AP, RDX and TKX-50, and reduce the time to achieve stable combustion. Moreover, the burning rate of the AP-based composite solid propellant is increased by 1.95 times after the introduction of 15 %Fe-CBO. The decomposition mechanism of AP, RDX, and TKX-50 catalyzed by 15 %Fe-CBO was proposed based on valence band theory and comprehensive experimental characterization. Fe-doping strategy provides a novel approach for the design of efficient combustion catalysts.
研究领域:
材料科学
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催化
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应用化学
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含能材料
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固体推进剂
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电子结构调控
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Feng Zhang,Yingting Sun,Miao Li,Qingyao Wang,Wenqing Song,Jingui Ma,Junwei Hou
Ternary oxide semiconductor could effectively adjust the energy band gap and location by changing the elemental ratio, which remarkably benefits the electron transfer and photoelectrocatalytic H 2 generation. In this paper, hydrangea-like CuBi 2 O 4 sensitizers were prepared on TiO 2 nanotube arrays (TiO 2 NTAs) by one-pot solvothermal deposition. The alkali kind showed vital influences on the microstructure and photoelectrocatalytic performance of CuBi 2 O 4 /TiO 2 NTAs, and the excellent pollutant remediation, photoelectric conversion and photoelectrocatalytic water splitting were achieved by the sample prepared by C 6 H 12 N 4 . Under visible light irradiation, the optimized sample displayed the higher photoelectrocatalytic H 2 generation rate (87.42 μmol·cm −2 ·h −1 ) than that of samples prepared using other alkali kinds. Moreover, the CuBi 2 O 4 /TiO 2 NTAs also exhibited high organic dye and Cr(VI) removal performance, and the outstanding photoelectrocatalytic activity indicates the novel strategy for the construction of CuBi 2 O 4 /TiO 2 NTAs photocatalyst for H 2 generation by effective photocatalytic water splitting .
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高影响因子
Journal of Environmental Chemical Engineering
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2025
·Vol. 14
·期 1
·120546
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IF 7.2
JinCheng Dai,Shuyue He,Xiyu Song,Hongjuan Zhang,Ruyi Xie
The construction of heterojunction photo-Fenton catalysts to activate hydrogen peroxide for the efficient degradation of organic pollutants in water has attracted considerable attention. Herein, a CuBi 2 O 4 @MIL-53(Fe) Z-scheme heterojunction catalyst was successfully prepared by solvothermal method for tetracycline (TC) degradation. In this catalytic system, the heterogeneous photocatalytic reaction and the Fenton reaction form a strong synergistic effect in the degradation of organic pollutants through the transfer of photogenerated electrons. The results indicate that in the presence of trace concentrations of H 2 O 2 (2.60 mM), 0.20 g/L of MC-15 (with CuBi 2 O 4 accounting for 15 % of the mass of MIL-53(Fe)) exhibited the highest catalytic activity, with a TC (150 mg/L) removal rate of 94.0 % after 50 min of visible light irradiation. Interestingly, the MC-15 catalyst can still achieve a removal rate of 62.1 % of TC even under dark conditions. Furthermore, in degradation experiments, MC-15 exhibited high environmental stability and applicability in different natural water system. The excellent catalytic performance of the light/MC-15/H 2 O 2 system is attributed to the quick separation of photogenerated electron-hole pairs from Z-scheme heterojunction CuBi 2 O 4 @MIL-53(Fe) and the accelerated bimetallic ions cycle. A possible photo-Fenton catalytic mechanism of MC-15 catalyst is proposed based photoelectrochemical tests, free radical capture experiment and electron paramagnetic resonance (EPR) analysis. This study provides a reference for the development of iron-based metal-organic framework composite photo-Fenton catalysts.
研究领域:
环境催化
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材料科学
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水处理技术
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高级氧化过程
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多相催化
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高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.2
Rui Xu,Qin Wei,Dan Li
A self-powered PEC sensor was developed for sensitivity glyphosate detection. • Cs 3 BiBr 6 -AgInS 2 was used as photoanode to provide photo electrons transmission. • CuBi 2 O 4 used as photocathode for providing electric energy for target detection. • The proposed glyphosate sensor showed a wide linear range of 1 × 10 −10 - 5 × 10 −4 mol/L. A self-powered photoelectrochemical (PEC) sensor was developed for the ultrasensitive and rapid detection of glyphosate, a widely used herbicide and potential contaminant in fruits and vegetables. The sensor integrates a Cs 3 BiBr 6 /AgInS 2 composite photoanode with a CuBi 2 O 4 -based photocathode. As a lead-free halide perovskite, Cs 3 BiBr 6 exhibits broad light absorption and prolonged carrier lifetime, while AgInS 2 modification markedly enhances the photoelectric conversion efficiency and optical stability of the photoanode. Meanwhile, CuBi 2 O 4 possesses excellent biocompatibility and abundant active sites, enabling efficient aptamer immobilization for the selective recognition of glyphosate. Under optimized conditions, the photocurrent response decreased linearly with increasing glyphosate concentrations over the range of 1.0 × 10 −10 –5.0 × 10 −4 mol/L, with a low limit of detection (LOD) of 4.6 × 10 −11 mol/L. In addition, the proposed PEC sensor demonstrated excellent stability, reproducibility, and accuracy in the analysis of real food samples, including soybean and corn, highlighting its considerable potential as a reliable analytical platform for on-site monitoring of pesticide residues in agricultural products. Download: Download high-res image (144KB) Download: Download full-size image
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高影响因子
APPLIED SURFACE SCIENCE
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2023
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IF 6.7
Yuting Xie,Haifeng Yang,Zhiqiang Qiao,Anqi Li,Miao He,Wenjing Yang,Yunhuai Zhang,Guangcheng Yang,Xueming Li
Physical destruction of microchips for data security based on thermite cannot simultaneously fulfill the demands of energy release and pressure output. Here, we have successfully assembled microchips based on Al/bimetallic oxide (CuBi 2 O 4 ) energetic films through electrophoretic deposition. Al/CuBi 2 O 4 exhibits excellent energy release and pressure output, the heat release of Al/CuBi 2 O 4 is more concentrated, as extensive heat released by Al/CuO triggered the reaction of Al and Bi 2 O 3 , which will be conducive to the destructive behavior. The effects of fuel and oxide with different ratios on exothermic performance were systematically investigated, including heat release, ignition threshold energy, ignition mass loss rate and pressure release. The best fuel/oxide ratio on Al/CuBi 2 O 4 energetic films is found to be 5.06:1 through inductively coupled plasma atomic emission spectrometry. The distribution between Al fuel and CuBi 2 O 4 rods is the most uniform at this ratio, hence it possesses the maximum heat release (926.4 J/g), lower ignition threshold (0.25 mJ), and faster pressurization rate (179.80 MPa/s). Importantly, high-speed photography results show that the intense reaction destroyed the energetic microchip (the thickness is about 0.3 mm) in only 10 ms.
研究领域:
材料科学
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化学工程
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2023
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IF 6
Cheng Peng,Xinyu Chen,Yu Yang,Feiyang Luo,Xuehui He,Yan Yu,Qiao Deng,Tianding Hu,Shaoyun Shan,Yunfei Zhi,Lihong Jiang,Hongying Su
The development of advanced strategy to activate persulfate for wastewater treatment is an ever-hot research topic. Herein, a high-performance composite catalyst MIL-68(Fe)/CuBi 2 O 4 (30 %) (M-CBO-30) was prepared by in-situ synthesizing MIL-68(Fe) in the CuBi 2 O 4 . The catalytic performances of M-CBO-30 as heterogeneous catalyst to activate PDS for the Rhodamine B (RhB) degradation were systematically studied. It was shown that the M-CBO-30/PDS system presented an ultrahigh RhB degradation efficiency which could remove 100 % RhB within 5 min only using 0.4 g L − 1 catalyst and 0.4 mM PDS. In addition, the M-CBO-30 could remove RhB at a wide pH range (2–10). One should note that the M-CBO-30 exhibited outstanding reusability which afforded high degradation efficiency after 5 successive recycles. And the catalyst structure remained still after being used for 5 catalytic cycles. Heavy metal ions leaching experiment indicated that Cu 2+ leaching concentration of M-CBO-30 was far lower than that of the city water criterion in Europe. The RhB degradation mechanism by M-CBO-30/PDS system was proposed based on the result of electrochemical experiment, radical quenching test, electron paramagnetic resonance and XPS analysis. The RhB degradation was attributed to the oxidization of reactive oxygen species (i.e., SO 4 •− , •OH and 1 O 2 ). The synergistic effect of redox cycle of surface Fe, Bi and Cu were responsible for the high-efficient PDS activation. The excellent recyclability, outstanding structural stability, wide pH application range, less heavy metal leaching and superhigh RhB degradation efficiency highlights the light application prospect of M-CBO-30 in SR-AOPs-driven RhB decontamination.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Xueying Wang,Jun Luo,Qiaozhi Yan,Yu Shen,Zhuo Liu,Shuai Lu,Changyu Lu,Weilong Shi
The photothermal effect, interfacial bond and internal electric field can effectively regulate the charge transfer of the heterojunction, improving the photocatalytic activity of the catalyst. Herein, we prepared the 1D/2D core–shell CuBi 2 O 4 @Cu 2 WS 4 heterojunction with the photothermal effect of “1 + 1 > 2”, which can effectively degrade tetracycline (TC) and levofloxacin (LVF) through the photothermal synergistic peroxydisulfate (PDS) activation process. Density functional theory (DFT) calculation femtosecond transient (fs-TAS) spectral and temperature control experiment analysis showed that the photothermal effect, S-Cu–O bonding and the internal electric field promoted the transport of photogenerated carriers. Visible light irradiation enables a degradation rate of 81.8 % for TC and 67.6 % for LVF in the photothermal-PDS system using Cu 2 WS 4 /CuBi 2 O 4 , which is 43.8 % and 26.9 % higher than that at 10℃, respectively. In addition, the vulnerable sites of TC molecules were determined by calculating the Fukui index. The ecological risk of TC degradation products was predicted based on the Ecological Structure Activity Relationships (ECOSAR) model, and the bean sprout cultivation experiment further verified the lower environmental risk of TC degradation products. This study provides a novel and feasible strategy for designing and developing photocatalysts for photothermal synergy PDS advanced oxidation process and organic pollutant degradation.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Zhengkun Yu,Yunlei Zhou,Haowei Zhang,Miao Zhang,Rongyu Zhang,Huanshun Yin,Jun Wang
Bi 2 SiO 5 /CuBi 2 O 4 Z-Scheme heterojunction enriched with oxygen vacancies were prepared by a simple one-pot hydrothermal method. The photocatalytic activity of Bi 2 SiO 5 /CuBi 2 O 4 nanocomposites was evaluated under visible light irradiation using tetracycline, antibiotic-resistant Escherichia coli (AR E. coli ), and tetracycline-resistant genes as the target pollutants. The results showed that Bi 2 SiO 5 /CuBi 2 O 4 nanocomposites had the best photocatalytic activity, which could degrade 83.3 % of tetracycline within 2 h, completely inactivate AR E. coli within 2.5 h, and almost completely destroy tetracycline-resistant genes within 3 h. In addition, the scavenging experiments and ESR experiments not only showed that the active substances of O 2 - , h + and OH played a dominant role and 1 O 2 played a secondary role in the photocatalytic system of Bi 2 SiO 5 /CuBi 2 O 4 nanocomposites, but also confirmed that the Z-Scheme heterojunction was successfully constructed between Bi 2 SiO 5 and CuBi 2 O 4 . Oxygen vacancies were detected by EPR experiments. The formation of oxygen vacancies and Z-Scheme heterojunction enhanced the light absorption properties of the Bi 2 SiO 5 /CuBi 2 O 4 nanocomposites and improved the separation efficiency of the photogenerated electron-hole pairs compared to the single Bi 2 SiO 5 and CuBi 2 O 4 materials. This work showed that Bi 2 SiO 5 /CuBi 2 O 4 was a new and efficient photocatalyst for the removal of tetracycline, AR E. coli and tetracycline-resistant genes, which provided a feasible idea for the management of water environment pollution.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.7
Zeyun Yang,Hao Guo,Yanrui Hao,Yu Yan,Wenting Niu,Jianpeng Ma,Ruixue Yan,Wu Yang
Although caffeic acid (CA) has important physiological effects, such as antioxidant and antibacterial properties, high concentrations of CA can increase the risk of cancer. Therefore, it is very necessary to establish a simple and sensitive detection method for it. Herein, a novel CA electrochemical sensing interface was constructed by in-situ growing NH 2 -UiO-66, a zirconium-based metal-organic framework (MOF), on semiconductor cupric bismuthate CuBi 2 O 4 (CBO) and further loading acidified multi-walled carbon nanotubes (MWCNTs). The obtained nanocomposite fully leverages the respective advantage of each component, including the excellent electrocatalytic activity of CBO, the selective adsorption ability of MOF, and the high conductivity and signal amplification effect of MWCNTs. Particularly, the acid-functionalized MWCNTs possess sufficient surface electroactive groups (sp 2 -C-OH), which can generate a stable electrochemical response through the reversible transformation between hydroxyl and quinone groups, thereby providing an important guarantee for constructing a self-referencing ratiometric electrochemical sensor. The electrochemical sensor was prepared by modifying the composite CBO@NH 2 -UiO-66/MWCNTs on glassy carbon electrode (GCE) to realize CA detection in wide range of 0.2–150 μM with a low detection limit (LOD = 0.052 μM) and excellent reproducibility, stability and selectivity. The analysis of actual beverages including red wine, green tea and coffee also achieved satisfactory recovery results and precision.
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PubMed
高影响因子
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