CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Xiaofei Fu,Chenyang Zhu,Jitao Yan,Xinru Lu,Zuming He,Yongmei Xia,Wenqian Lian,Qiangshun Wu,Jiali Chen,Jiameng Pu,Tinghai Yang,Yong Gao
The rational design of heterostructure photocatalysts is of great significance for maximizing the synergistic effects from individual material characteristics during photocatalytic processes. Herein, a triple-engineered Bi 4 O 5 Br 2 /FeS 2 heterojunction was successfully developed via a combined calcination–hydrothermal method. The optimized heterojunction (BOB/FS-21) demonstrated a cefalexin degradation rate of 98.6 % within 60 min, and exhibited exceptional performance in the treatment of real pharmaceutical wastewater, effectively reducing the COD from 7852 mg/L to 1987 mg/L. The superior performance was attributed to the following benefits, either directly or indirectly: i) interfacial S − O bonds built specific charge transfer channels, ii) Z -scheme mode optimized the charge transfer path, iii) photothermal-assisted effect accelerated reaction kinetics and suppressed carrier recombination. Experiments, characterizations, and calculations collectively validated these synergistic benefits driving the efficient and active charge transfer process, realizing a unified “three-in-one” functional system. Besides, the breakdown mechanism of cefalexin was investigated by employing mass spectrometry and DFT methods, and a toxicity evaluation of the intermediate products during degradation was carried out using toxicological assessments. Overall, this work establishes a triple-synergy paradigm for the design of advanced heterogeneous photocatalysts toward sustainable antibiotic remediation.
研究领域:
环境催化
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光催化
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水污染控制
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环境功能材料
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分子生物学
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药物代谢
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毒理学评估
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可持续修复技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Haoyi Wang,Ye Zhou,Jinnan Wang,Aimin Li,Philippe François-Xavier Corvini
To remove endocrine disrupting chemicals (EDCs), visible-light response photocatalyst BiOBr/Bi 4 O 5 Br 2 /perylene diimide (PDI) with bi-heterojunction was constructed. Under visible-light irradiation, BiOBr/Bi 4 O 5 Br 2 /PDI could degrade 90% Bisphenol A (BPA) within 75 min, while degrade 100% 17α-ethynyl estradiol (EE2) and 17β-estradiol (E2) within 15 min. Radicals quenching experiment and EPR indicated both •O 2 – and holes were the main substances for EDCs degradation, and the possible degradation pathway of EDCs are proposed based on the LC-MS analysis results. In the composite of BiOBr/Bi 4 O 5 Br 2 /PDI, the matching energy band structure between Bi 4 O 5 Br 2 and BiOBr facilitated the formation of heterojunction for strengthening the space charge separation. Meanwhile, PDI with strong photosensitivity combined with BiOBr/Bi 4 O 5 Br 2 not only enhanced visible-light photocatalytic activity but also broadened the light-harvesting range. Owning to the unique one-dimensional conjugated structure and internal electric field effect, PDI could also promote the photo-carriers transfer and separation. With the bi-heterojunction effect, photo-generated electrons were transferred to BiOBr conduction band while holes were accumulated on PDI valence band. Simultaneously, holes could oxidize water with the production of oxygen following being reduced to •O 2 – by photo-generated electrons. Even under oxygen-poor conditions, the production of •O 2 – can reach 32.7 × 10 -5 mol•g −1 •h −1 , resulting in more than 85% BPA degradation within 75 min.
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
高影响因子
JOURNAL OF RARE EARTHS
·
2026
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IF 9.6
Dan Wu,Yanni Lang,Junhao Li,Qiu Fu,Yugeng Wen,Dacheng Zhou,Yong Yang,Yongjin Li,Zhiguo Song,Jin Han,Jianbei Qiu
Upconversion luminescent materials can convert near-infrared excitation into higher-energy emissions, showing great potential in applications such as temperature sensing and optical anti-counterfeiting. However, it remains challenging to simultaneously achieve high thermal stability, sensitive temperature response, and circularly polarized luminescence within a single system. In this work, chiral Bi 4 O 5 Br 2 : Yb 3+ /Er 3+ nanosheets were synthesized via a hydrothermal method combined with chiral modification and pH regulation, and their structural and luminescent properties were systematically investigated. The results indicate that pH regulation during precursor synthesis facilitates the optimization of the Bi 4 O 5 Br 2 morphology and improves its crystallinity, thereby promoting a more ordered crystal growth process. Subsequently, chiral induction introduces local lattice distortion while suppressing defect formation. The synergistic effect of both helps to significantly enhance upconversion luminescence performance. Under variable-temperature conditions, the 849 nm near-infrared emission ( 4 I 9/2 - 4 I 15/2 ) exhibits negligible thermal quenching over the temperature range of 293−533 K, in sharp contrast to the thermally quenched behavior of visible emissions. Based on this feature, a fluorescence intensity ratio (FIR) thermometry strategy was established, achieving high sensitivity with an absolute sensitivity ( S a ) of 20.73%/K and a relative sensitivity ( S r ) of 3.45%/K. Furthermore, the material exhibits pronounced emission intensity differences under circularly polarized excitation and detection. This enables the construction of a polarization-color synergistically tunable luminescent anti-counterfeiting system. This work provides a new strategy for designing multifunctional upconversion materials that integrate optical thermometry and polarization-based anti-counterfeiting capabilities.
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Yi Wang,Xinyan Xiao,Tingting Ding,Mingli Lu
The transition-metal dichalcogenides (TMDs) with 1T phase structure holds great promise for providing abundant active sites and superior conductivity, while the achievement of highly efficient degradation activity over bare TMDs and TMDs-based photocatalysts is still challenges. In this work, a flower-like mixed 1T-2H phase MoSe 2 was synthesized via a sodium borohydride (NaBH 4 )-assisted solvothermal method, and then was selected as a “charge-transfer-bridge” to fabricate a dual Z-scheme AgI/1T-2H MoSe 2 /Bi 4 O 5 Br 2 composite with a 0D/3D hierarchical structure. The optimal AgI/1T-2H MoSe 2 /Bi 4 O 5 Br 2 composite exhibited the superior photocatalytic activity towards degrading RhB and TC relative to AgI/2H MoSe 2 /Bi 4 O 5 Br 2 and AgI/Bi 4 O 5 Br 2 . The enhancement is attributed to its better light absorption, abundant active sites, and superior charge carrier mobility and separation efficiency, resulted from synergetic effect of 0D/3D structural coupling and energy band matching. Moreover, the important energy band alignments and mixed 1T-2H phase MoSe 2 boosting photocatalytic mechanism of as-prepared AgI/1T-2H MoSe 2 /Bi 4 O 5 Br 2 heterojunction were investigated. This work describes a competitive design and fabrication technique for constructing novel mixed phase TMDs-based Z-scheme heterojunctions to address environmental issues.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
Small
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2023
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IF 13.3
LuLu Cao,Yunlei Zhou,Lanlan Gao,Huanshun Yin,Miao Zhang,Haowei Zhang,Peng Ju,Kunpeng Dou,Shiyun Ai
Oxygen vacancy defects (OVs) are one of the main strategies for nanomaterials modification to improve the photoactivity, but current methods for fabricating OVs are usually complicated and harsh. It is important to develop simple, rapid, safe, and mild methods to fabricate OVs. By studying the effects of different weak reducing agents, the concentration of the reducing agent and the reaction time on fabrication of OVs, it is found that L -ascorbic acid (AA) gently and rapidly induces the increase of OVs in Bi 4 O 5 Br 2 at room temperature. The increased OVs not only improve the adsorption of visible light, but also enhance the photocurrent response. Based on this, the preparation of OVs in Bi 4 O 5 Br 2 is employed to the development of a photoelectrochemical biosensor for the detection of DNA demethylase of methyl-CpG binding domain protein 2 (MBD2). The biosensor shows a wide linear range of 0.1–400 ng mL −1 and a detection limit as low as 0.03 ng mL −1 (3σ). In addition, the effect of plasticizers on MBD2 activity is evaluated using this sensor. This work not only provides a novel method to prepare OVs in bismuth rich materials, but also explores a new novel evaluation tool for studying the ecotoxicological effects of contaminants.
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产品关联
DOI
PubMed
高影响因子
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