APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Tong Liu,Yongjin Li,Zhiyuan Cheng,Yan Peng,Menghan Shen,Shenghong Yang,Yueli Zhang
Spontaneous polarization of ferroelectric is used to promote the separation of photogenerated electrons and holes, showing tremendous potentials of solar-light driven photocatalytic. However, designing a system of efficient response to visible light, remains a fundamental challenge due to rapid recombination of electrons-holes and weak absorption in visible region. Here, we synthetized Bi 4 Ti 3 O 12 /BiOI heterojunction , which BiOI nanosheets selectively deposited on (1 1 0) facets of Bi 4 Ti 3 O 12 by epitaxy growth. The synthetized heterojunction is characterized by phase structures, morphology, and surface chemical state. The results of ferroelectric phase curve illustrate that the construction of heterojunction enhances the ferroelectric properties, which is favorable to improve the separation and recombination processes of carriers. Furthermore, the sample Bi 4 Ti 3 O 12 /BiOI-3 reveals better photocatalytic kinetics in photodegradation of bisphenol A (BPA) under visible-light irradiation, which is about 74.16 and 1.83 times faster than that of pure Bi 4 Ti 3 O 12 and BiOI. This work provides an effective and scalable strategy for designing a system of efficient response to visible light.
研究领域:
材料科学
·
光催化
·
纳米材料
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环境化学
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铁电材料
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Hao Yang,Junbin Xie,Xiangyu Li,Zhao Liu,Guixiang Teng,Zhongli Zhao,Jie He,Chun Zhang
Given the accelerated pace of industrial development and the escalating issue of water pollution, the development of high-efficiency and energy-saving materials for the degradation of organic pollutants is imperative. Consequently, the development of heterojunction photocatalytic materials has emerged as one of the most promising strategies. In this study, n-type semiconductor ZnFe 2 O 4 nanorods and p-type semiconductor BiOI nanoflowers were utilized to construct a type p-n heterojunction ZnFe 2 O 4 /BiOI, exhibiting a significantly larger specific surface area of 38.72 m 2 /g, which is 4.6 times greater than that of ZnFe 2 O 4 (8.30 m 2 /g). The density functional theory calculations reveal that the formation of the heterojunction substantially improves the electron transport efficiency and markedly suppresses the recombination of photogenerated charge carriers, primarily due to the establishment of a p-n heterostructure. Moreover, the degradation efficiency of tetracycline achieved an impressive rate of 94.8 %. The degradation efficiency remained above 90 % following three photocatalytic reaction cycle tests.
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高影响因子
Nature Communications
·
2026
·
IF 18.1
Dongyang He,Kangning Zhang,Chuanhao Liu,Ya-nan Zhang,Hao Yang,Jingyuan Dong,Jiao Qu
Solar disinfection (SODIS), as a point-of-use (POU) water disinfection strategy for controlling waterborne microorganisms, serves millions of residents daily in over 50 low- to middle-income countries lacking basic drinking water services. However, SODIS is time consuming (6-48 h of sunlight exposure) due to its strong dependence on UV photons, which account for only ~4% of the solar energy. Thus, it is desirable to capture additional energy from visible-light photons (~50% of the solar energy) to accelerate the slow kinetics. Here, we use phosphorene nanoflakes (PNs) and BiOI nanosheets (BS) as model materials to construct a heterojunction photocatalyst, illustrating that simultaneously modulating the interfacial interaction and band alignment between the heterojunction components can achieve a dual optimization of the kinetic and thermodynamic constraints in photo-induced charge carriers, effectively enhancing the utilization of visible-spectrum energy for microbial inactivation. Notably, a subminute photocatalytic water disinfection performance is demonstrated by the PNs/BS heterojunction, completely inactivating 7 log of E. coli within 45 s under real sunlight. This results in a first-order disinfection rate ~221 times greater than that of commercial P25 TiO 2 . This work provides insights into the design of potent antimicrobial photocatalysts for POU water disinfection applications. The study demonstrates a phosphorene/BiOI heterojunction that achieves sub-minute water disinfection, offering insights into the design of efficient photocatalytic antimicrobial materials.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhiang Hou,Jinzhu Yue,Hao Chen,Jinnan Wang,Aimin Li,Philippe François-Xavier Corvini
Endocrine disrupting chemicals (EDCs) interfere with the normal secretion, transport and metabolism of human hormones, thus affecting neurological, reproductive and immune functions. Photocatalysis is regarded as a facile organic degradation technique. The construction of heterojunctions can modulate the reactive oxygen species and enhance the photocatalytic performance of semiconductors. However, poor contact interfaces still severely limit carrier separation and transfer. Herein, we have doped Co to modulate the band structure of Bi 2 O 2 CO 3 while facilitating the in situ growth of BiOI on its surface via shared Bi atoms. This approach led to the development of a 2D/2D Co-Bi 2 O 2 CO 3 /BiOI (Co-BOC/BiOI) S-scheme heterojunction characterized by atomically close contact interfaces. Furthermore, the photo-electrochemical characterization results indicate that the light adsorption capacity, carrier separation and transport efficiency of the optimized Co-BOC/BiOI-3 are greatly improved. This system demonstrates almost 100% removal rate for three typical EDCs within 60 min. The degradation kinetic constants show an improvement by an order of magnitude compared to single BiOI and Bi 2 O 2 CO 3 . More importantly, O 2 •﹣ , which is produced from O 2 reduction on high negative conduction band, can be subsequently oxidized into 1 O 2 by photogenerated hole. Electron paramagnetic resonance and quenching experiments indicate that the organics degradation process is dominated by 1 O 2 . This work offers new insights into the construction of high-quality S-scheme heterojunction interfaces for modulation of reactive oxygen species.
研究领域:
环境科学
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材料科学
·
生物学
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DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 21
·16799
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IF 4.6
Yijian Zhou,Mengting Ji,Shengqian Liang,Jiahang Song,Haotian Wu,Enzhou Liu,Bing Wang,Chen Wang,Bo Zhou,Zhuo Li
Constructing S-scheme heterojunctions is an effective strategy to enhance charge separation efficiency. In this study, for the first time, boron subphthalocyanine bromide (SubPc-Br) was formed by self-assembly on the surface of layer BiOI to form an S-scheme heterojunction (SubPc-Br/BiOI) through halogen bonding and π–π stacking interactions. Experimental results demonstrate that the SubPc-Br/BiOI composite enhances tetracycline removal efficiency by a factor of 1.6 compared to pure BiOI. Notably, after five cycles, the composite still maintains a high tetracycline removal rate, which is 2.62 times that of pure BiOI. DFT and TDDFT theoretical calculations, combined with synchrotron X-ray photoelectron spectroscopy (XPS) under simultaneous illumination, indicate that the internal electric field generated between the [Bi 2 O 2 ] layer and the SubPc-Br macrocycle plays a dominant role in charge separation, while interfacial electron transfer contributes to the constitution of the S-scheme heterojunction. Moreover, the combination of molecular dynamics simulations (MD), Fukui function calculations, and HPLC-MS detection reveals the mechanism of pollutant degradation. This study introduces an innovative strategy for the construction of BiOI-based S-scheme heterojunctions. Constructing S-scheme heterojunctions is an effective strategy to enhance charge separation efficiency.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Hongxia Liu,Hui Mei,Shiping Li,Longkai Pan,Zhipeng Jin,Gangqiang Zhu,Laifei Cheng,Litong Zhang
Bismuth titanate (Bi 12 TiO 20 ) with unique sillenite structure has been shown to be an excellent photocatalyst for environmental remediation. However, the narrow light-responsive range and rapid recombination of photoinduced electrons-holes limit the photocatalytic performance of Bi 12 TiO 20 . To overcome the limitations, a practical and feasible way is to fabricate heterojunctions by combining Bi 12 TiO 20 with suitable photocatalysts. Here, using a facile chemical precipitation method, a novel and hierarchical core–shell structure of n-Bi 12 TiO 20 @p-BiOI (BTO@BiOI) heterojunction was rationally designed and synthesized by loading BiOI nanosheets on BTO nanofibers. The constructed BTO@BiOI composites exhibited significant charge transfer ability due to the synergistic effects of the built-in electric field between BTO and BiOI as well as close interfacial contacts. In addition, the narrow bandgap characteristics of the BiOI led to wide light absorption ranges. Therefore, the BTO@BiOI heterojunction exhibited an improved photocatalytic performance under visible light irradiation. The NO removal efficiency of optimal BTO@BiOI was 45.7%, which was significantly higher compared to that of pure BTO (3.6%) or BiOI (23.1%). Moreover, the cycling experiment revealed that BTO@BiOI composite has a good stability and reusability. The possible mechanism of photocatalytic NO oxidation over BTO@BiOI was investigated in detail.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2023
·
IF 7
Junhui Yi,Runkun Xie,Ruilong Liu,Minghao Li,Haoxian Zeng,Qingqing Chen,Linxuan Cai,Ning Li,Changlin Yu,Zhenghui Liu,Dehao Li
The problem of environmental pollution caused by the frequent use of antibiotics has attracted extensive attention. The heterojunction composed of various bismuth oxyiodide (such as BiOI, Bi 4 O 5 I 2 , Bi 5 O 7 I, etc.) were widely used in the treatment of antibiotic wastewater. Herein, a hollow BiOI/Bi 5 O 7 I hierarchical microsphere was constructed in-situ by annealing BiOI precursors synthesized by the solvothermal method. The phase transition temperature for the formation of heterojunctions has been investigated in detail. The obtained products were characterized by various technologies including transmission electron microscope (TEM), X-ray photon-electron spectroscopy (XPS), and so on. Experimental results suggested that 390-BiOI/Bi 5 O 7 I microsphere with hollow structure exhibits the optimal performance and maximum photocurrent response under visible light irradiation. The efficiency for degradation of tetracycline hydrochloride (TH) was up to 83 % in 100 min. The value still maintained at 95 % after the catalyst has been reused for four times. The capture experiment indicates that produced ·O 2 − played the most important role. But formed h + and ·OH played a secondary role. The degradation intermediates were analyzed by Liquid Chromatography-Mass Spectrometry (LC-MS). Accordingly, the possible degradation pathways are proposed. An S-scheme based heterostructure photocatalytic mechanism is proposed aiming to explain the enhanced catalytic performance. The BiOI/Bi 5 O 7 I heterojunction with exceptional activity and stability is bound to expand applications in the field of water treatment .
研究领域:
环境科学
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材料科学
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DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
Yan Chen,Yunlei Zhou,Huanshun Yin,Fei Li,Hui Li,Runze Guo,Yihao Han,Shiyun Ai
Histone acetylation is a very important post-transcriptional modification, which is catalyzed by histone acetyltransferase with acetyl group donor of acetyl coenzyme A (Ac-CoA). Abnormal histone acetylation is associated with many diseases, so it is important to develop a sensitive and efficient method for detecting histone acetyltransferase (HAT). In this paper, a simple and sensitive photoelectrochemical biosensor was established for indirect detection of HAT using the acetylation reaction by-product of coenzyme A (CoA) as target molecule. To construct the biosensor, BiOI nanoflower was employed as photoactive material, Fe 3 O 4 -NH 2 and 3-maleimidopropionic acid were used as “bridge” reagents for immobilizing CoA, and ZnO quantum dots were adopted as photocurrent inhibitor. Under optimal experimental conditions, the photocurrent decreased with changing HAT concentration from 0.01 to 500 nM. The linear relationship between the photocurrent and the logarithm value of HAT concentration can be constructed with this concentration range and the detection limit was 3 pM (S/N = 3). The sensor has excellent detection specificity, good stability and reproducibility. Based on the current situation of serious antibiotic contamination, the effect of antibiotics on HAT activity was investigated using this photoelectrochemical biosensor.
研究领域:
生物化学
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分析化学
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分子生物学
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医学诊断
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
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2021
·
IF 6.498
Xueqian Yan,Jin Qian,Xiangjun Pei,Lihong Zhou,Rui Ma,Mingkuan Zhang,Yufei Du,Linqin Bai
In this study, a magnetic NiFe 2 O 4 /MWCNTs/BiOI composite were fabricated and applied for enhanced and sustainable photocatalytic degradation of doxycycline (DOX) under UV light irradiation. The as-synthesized material was characterized by a series of techniques and its photocatalytic property was assessed via a couple of batch tests. With the pH at 3.0 and NiFe 2 O 4 /MWCNTs/BiOI loading of 1.5 g L −1 , the DOX degradation (at 45 mg L −1 ) efficiency could achieve 92.18% with the reaction rate constant k of 0.0072 min −1 . The high mineralization of DOX suggests the strong oxidation of both the parent pollutant and the intermediary products in the ternary catalyst system. DRS spectra indicated that compared with BiOI , the introduction of NiFe 2 O 4 and MWCNTs reduces the band gap energy of the NiFe 2 O 4 /MWCNTs/BiOI. The quenching test illustrates that h + , OH and O 2 − all functioned in the developed photocatalytic system, where O 2 − and h + play the dominant roles in DOX degradation. The more efficient electron-h + separation and more oxidizing species induced by UV light resulted in the significant improvement of DOX abatement in the developed coupling system compared with that on either BiOI or NiFe 2 O 4 /MWCNTs. The magnetic property of NiFe 2 O 4 /MWCNTs/BiOI enables its easy separation of the solid catalyst from the reaction solution and the sustainable application in the photocatalysis . Based on the intermediates of DOX decomposition identified by UPLC-MS, the possible degradation routes were proposed accordingly.
研究领域:
环境化学
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材料科学
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光催化
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水污染治理
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纳米复合材料
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药物降解
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
JiCheng Liu,ZhaoYang Yao,Shun Gao,Xue Zou
BiOI/Bi 2 WO 6 /MXene composite was successfully synthesized via a solvothermal method, confirmed by XPS/XRD. • Optimal composite degraded 89.3% ranitidine and mineralized 56.0% in 2 h. • EPR analysis indicated that superoxide radicals (•O₂ − ) dominate the degradation process. Ranitidine, a widely used acid-suppressing drug, can undergo nitrosation in aquatic environments to generate N -nitrosodimethylamine (NDMA), a potent carcinogen that poses a serious threat to aquatic ecosystems. To address its persistence against natural degradation, a ternary BiOI/Bi₂WO₆/MXene composite was fabricated via a one-pot solvothermal synthesis. Heterojunction construction effectively broadened its visible-light harvesting capacity. Characterizations by SEM, TEM, XRD, and UV–Vis DRS confirmed the successful formation of the heterojunction with markedly enhanced visible-light absorption. Combined with band structure analysis and radical trapping experiments, a Z -scheme charge transfer mechanism was proposed. Visible-light photocatalytic tests showed that the optimal sample exhibits a high degradation efficiency of 89.3% for RAN, with a 47% relative enhancement compared with pristine BiOI. Radical identification revealed that superoxide radicals (·O₂ − ) were the dominant reactive species. The synergistic effect between the electron-conductive MXene and the interfacial heterojunction accelerated photogenerated carrier separation and ·O₂ − production. Moreover, the composite retained 72.35% of its degradation efficiency after three cycles, demonstrating good stability. This work provides a novel material design strategy for visible-light-driven ranitidine degradation and offers a theoretical basis for mitigating NDMA formation risks.
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高影响因子
MICROCHIMICA ACTA
·
2026
·Vol. 193
·期 8
·511
·
IF 5.4
Yan Yuting,Qiu Yu,Chen Yun,Wang Qirui,Wang Yafei,Du Xiaoxue,Mao Hanping,Li Henan
A photoelectrochemical (PEC) aptasensor based on bismuth oxyiodide (BiOI) nanoflower/biomass carbon (BiOI@BC) was fabricated for in-situ detecting abscisic acid (ABA) in tomato leaves under salt stress. Shrimp shells-derived biomass carbon acted as an enhanced carrier, and the biomass carbon improves the PEC performance of BiOI by extending the visible light absorption range and promoting the charge transfer of pure BiOI nanoflower. The BiOI@BC exhibited high photocurrent, which was about 19 times in contrast to pristine BiOI, attributing to the synergistic effects of biomass carbon self-doped with N, P, and S atoms. Furthermore, a PEC aptasensing platform was developed for the sensitive and selective determination of ABA, with a wide linear range from 0.1 to 1000 pM and a remarkably low detection limit of 0.03 pM. The practical applicability of the device was further validated by on-site monitoring of ABA levels in tomato leaves under salt stress, demonstrating good stability and accuracy. This work provides a robust strategy for real-time phytohormone detection, facilitating precise crop regulation in plant biology and agriculture. Graphical
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PubMed
高影响因子
Advanced Energy Materials
·
2026
·
IF 25.5
Changxi Yu,Zhikang Chen,Li Xiang,Kailing Sun,Tongye Wei,Wangping Xu,Xiaolin Wei
Achieving reversible insertion/extraction in most cathodes for aqueous aluminum ion batteries (AAIBs) is a significant challenge due to the high charge density of Al 3+ and strong electrostatic interactions. Herein, we reported the first integration of a hydrangea−like BiOI cathode with zinc anode in a 1 м Al 2 (SO 4 ) 3 + 0.1 м NaCl electrolyte for aqueous rechargeable battery application. Experimental combined with density function theory (DFT) analyses reveal that chloride ion (Cl − ) partially substitutes iodide (I − ) in the BiOI lattice, forming interfaces that facilitate rapid Al 3+ ion deintercalation and intercalation kinetics. The resultant Lewis−acidic environment suppresses parasitic side reaction and mitigates anode passivation. Consequently, the fabricated Zn/AC10/BiOI cell provides a high specific capacity of 203 mAh g −1 at a high current density of 5 A g −1 , with a capacity retention rate of 94.1% and coulomb efficiency of nearly 100% even after 1500 cycles. Furthermore, leveraging the strong visible−light absorption of BiOI, the proposed photo-rechargeable AAIBs exhibits a 23.1% increase in discharge capacity (from 242 mAh g −1 to 298 mAh g −1 at 0.5 A g −1 ) under illumination.
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高影响因子
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