JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Yulin Ling,Jianhong Zhou,Xiaoyue Peng,Ye Xiao,Qingliang Chen,Jiangpeng Shen,Yuanqi Huang,kaihong Mao,Xiangbo Tang
Three-dimensional BiOI/WO 3 composite photoelectrodes were synthesized using a solvothermal method. Material characterization showed good crystallinity and purity, with BiOI nanosheets interlaced and firmly attached to WO 3 nanorods to form a three-dimensional structure. Using 2-methoxyethanol as the solvent, ultra-thin BiOI nanosheets were successfully synthesized. These nanosheets were closely combined with WO 3 nanorods and formed a large number of interlaced pore structures on their surfaces. As a result, the specific surface area was larger and the active sites were more numerous. The photoelectrodes utilized light with wavelengths below approximately 540 nm for catalytic degradation. The photoelectrode with an appropriate BiOI loading ratio (BIW-1.2) exhibited the strongest photoelectric performance and photoelectrocatalytic (PEC) degradation activity. When a 1.2 V bias was applied, a 20 mg/L ciprofloxacin solution was degraded with an efficiency of 97.1% after 3 h. The catalyst also maintained good stability over five cycles. Analysis of the band structure and reactive species indicated that the Z-scheme charge-migration mechanism, together with the applied bias, promoted efficient separation of photogenerated charges. The interlaced three-dimensional structure provides strong adsorption capacity, abundant catalytic sites, and high light-utilization efficiency, which together increase radical generation and enhance PEC performance.
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高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2026
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IF 5.2
Ning Li,Yihui Qi,Shujie Zang,Tingna Shao,Jiaojiao Gao,Lina Lin,Yu Zhao
A novel TiO 2 –g-C 3 N 4 –BiOI (TCB) dual-heterojunction nanocomposite with a hierarchical nanoflower morphology was synthesized via a combined hydrothermal–calcination method. The TCB-2 sample, which contained 2.4% Bi, exhibited exceptional photocatalytic activity for methyl orange degradation, achieving 98.55% removal under xenon-lamp irradiation within 100 min. SEM characterization revealed a nanoflower architecture composed of interlaced nanosheets with abundant interspaces, providing increased active sites and facilitating reactant diffusion. UV–Vis DRS analysis confirmed the narrowed optical band gap and extended visible-light absorption range. The formation of intimate contact between components, which is a prerequisite for heterojunctions, was supported by XRD and XPS analyses, suggesting the possible establishment of dual heterojunctions (Type II and p-n). The catalyst maintained an 82.80% degradation efficiency after three cycles, demonstrating excellent stability. This work provides valuable insights for designing TiO 2 -based photocatalysts with enhanced visible-light utilization for environmental applications.
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DOI
高影响因子
ACS Applied Bio Materials
·
2018
·
IF 0
Yuping Yang,Haibo Yin,Huifan Li,Quan Zou,Ziping Zhang,Wenkai Pei,Liulin Luo,Yuning Huo,Hexing Li
The threat of environmental microbial contamination to the health of human beings has drawn particular attention. In order to explore the synergistic effect of photocatalytic and photothermal process to the antibacterial property, a stably combined BiOI-graphene oxide (GO) nanocomposite was constructed and prepared through a facile solvothermal method. BiOI crystals were uniformly distributed on the GO nanosheets by the formation of the Bi–C bond. On the basis of various characterizations, the great surface area, the high light harvesting with extension into NIR region, and the efficient transfer of photoinduced electrons by the conductivity of GO were demonstrated, all of which are beneficial for the photocatalytic antibacterial activity. More importantly, the photothermal effect of GO increased the temperature of the BiOI-GO composite with high photothermal conversion efficiency and induced the photogenerated electrons from BiOI crystals to obtain more energy and higher carrier mobility. Conversely, the temperature elevation of BiOI-GO composite improved its capability for light absorption and separation of photoinduced charges. As a result, the BiOI-GO composite enabled the synergistic photocatalytic-photothermal effect for the improvement of the antibacterial property for Acinetobacter baumannii with higher efficiency of TOC removal and leakage of K+ ions, in comparison with the individual photocatalytic process. Thus, the synergistic photocatalytic-photothermal contribution of BiOI-GO composite will provide significance for the potential application of environmental disinfection in the future.
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CHEMICAL ENGINEERING JOURNAL
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2020
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IF 10.652
Junfeng Yang,He Su,Yuyang Wu,Daguang Li,Dan Zhang,Hang Sun,Shengyan Yin
Many studies have been devoted to enhancing photocatalytic activity of hydrogen generation by water splitting in recent years. Herein, a well-defined 3D flowerlike mesoporous photocatalyst (kermesinus BiOI, K-BiOI) was successfully prepared through UV–Vis-Light driving method. The X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR) and surface photovoltage (SPV) tests confirmed that the oxygen vacancies (OVs) were introduced onto the surface of BiOI, which resulted that the color of BiOI changed from normal orange to kermesinus. The successful introduction of OVs led to the absorption range of K-BiOI stretched. Although the OVs are introduced on the surface, the main body of the material is still BiOI. Furthermore, K-BiOI exhibited a remarkably improved hydrogen production rate of 6.51 mmol g −1 h −1 under UV–Vis-light irradiation, which was 21-fold higher than that of BiOI under UV light irradiation. The OVs on the K-BiOI surface could form a defect state lying near the conduction band minimum of the photocatalyst and act as an electron scavenger delaying the photogenerated carrier recombination during the photoreaction process. The present work provides a new approach to introduce OVs on the surface of BiOI, which can provide a new strategy of catalyst preparation for the efficient H 2 production.
研究领域:
材料科学
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能源化学
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DOI
高影响因子
DALTON TRANSACTIONS
·
2018
·Vol. 47
·期 35
·12130-12137
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IF 4.099
Xiaofei Guo,Chuanxiang Qin,Mingyue Zhu,Jian-jun Wang,Jun Sun,Lixing Dai
A composite photocatalyst, with a BiOI/TiO2 heterojunction supported on carboxyl polystyrene spheres, was prepared using a two step hydrothermal reaction method. The products were characterized by X-ray diffraction, scanning electron microscopy and energy-dispersive X-ray spectroscopy. The results show that the polystyrene microspheres were covered with smaller-sized BiOI microspheres, while nano-sized TiO2 particles were deposited on the surface of the flower-like BiOI microspheres. As an internal electric field exists when BiOI is hybridized with TiO2, the photogenerated carriers could be separated effectively and the resulting composite photocatalyst PS/BiOI/TiO2 had better performance for degrading rhodamine B in aqueous solution under visible-light irradiation with a 40 W incandescent lamp than that of PS/BiOI. Meaningfully, the composite photocatalyst can be recycled easily by filtering.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
RSC Advances
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2015
·Vol. 5
·期 20
·15469-15478
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IF 3.84
Tingting Wang,Hui Meng,Xiang Yu,Yizhu Liu,Hongbin Chen,Yi Zhu,Jinpeng Tang,Yexiang Tong,Yuanming Zhang
A BiOI/SnS2 p–n junction is prepared by depositing BiOI particles on flowerlike SnS2 flakes. The heterojunction formed between p-type BiOI and n-type SnS2 brings greatly improved photocatalytic activity compared with pure SnS2 or BiOI in the degradation of Rhodamine B dye under visible light and sunlight irradiation. The improved photocatalytic performance is explained by the synergetic effects of the formation of a p–n junction between BiOI and SnS2. The migration of photogenerated carriers can be promoted by the electric field established at the heterojunction interfaces, leading to effective separation of the photogenerated electron–hole pairs and reduced electron–hole recombination. The BiOI/SnS2 heterojunction will find promising applications in photocatalysis and solar energy conversion.
研究领域:
材料科学
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光催化
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纳米材料
·
能量转换
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Fengyi You,Jingyu Sun,Liangjun Zhou,Yuan Fang,Rui Fan,Xiang Cao,Tianyou Xu,Jun Chai,Haixiang Cheng
Ultrathin flower-like BiOI was constructed with confinement-enriched oxygen vacancies. • Geometric confinement lowered the oxygen vacancy formation energy from 3.96 to 3.73 eV. • Oxygen vacancy enrichment reduced the work function and promoted interfacial charge transfer. • The optimized BiOI showed 137-fold faster TC-HCl oxidation under visible light. Geometric confinement, defect thermodynamics, and interfacial charge utilization are closely coupled in layered semiconductors, yet their relationship remains insufficiently understood. Here, we show that reducing the thickness of BiOI lowers the oxygen-vacancy formation energy and is associated with enhanced vacancy enrichment, thereby reconstructing the surface electronic structure and improving visible-light oxidation. The optimized BOI-F consists of hierarchical flower-like assemblies built from ultrathin nanosheets with an average thickness of about 2.4 nm, whereas BOI-S shows a compact bulk-like morphology. Relative to BOI-S, BOI-F exhibits a wider band gap, a longer carrier lifetime, a stronger photocurrent response, and a lower charge-transfer resistance. As a result, its apparent oxidation rate for tetracycline hydrochloride (100 mg L −1 ) reaches 0.0434 ± 0.0004 min −1 , which is about 145 times that of BOI-S (0.0003 min −1 ). DFT calculations show that the oxygen-vacancy formation energy decreases from 2.63 eV for the monolayer to 3.73 eV for the bilayer, 3.77 eV for the four-layer, and 3.95 eV for the bulk, indicating that geometric confinement thermodynamically favors vacancy formation in the ultrathin limit. The enriched oxygen vacancies lower the work function, facilitate O 2 adsorption and activation, and strengthen the adsorption and interfacial charge coupling of organic pollutants. Reactive-species trapping experiments identify photogenerated holes as the dominant oxidative species, with singlet oxygen serving as a secondary pathway. This work links thickness confinement to defect thermodynamics and interfacial charge utilization in layered BiOI, and provides a practical strategy for designing efficient layered photocatalysts. Download: Download high-res image (492KB) Download: Download full-size image
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高影响因子
Nanoscale
·
2025
·
IF 5.1
Hao Wang,Weilong Qin,Qitao Liu,Neway Belachew,Jianming Li,Qinglu Liu,Jiabo Le,Yongbo Kuang
Bismuth oxyiodide (BiOI) has emerged as a prominent oxide semiconductor for applications in optoelectronic conversion and energy catalysis. However, the fabrication of uniform, tunable, and large-sized BiOI thin films remains challenging, limiting their versatility across diverse application scenarios. Ultrasonic spray pyrolysis (USP) deposition offers inherent scalability for thin-film production, yet its practical application is hindered by a limited mechanistic understanding and the absence of multidimensional control strategies. In this study, we elucidate the deposition mechanism of BiOI via USP and develop comprehensive methods for its multidimensional control, achieving modulation of the growth orientation, size and thickness of the BiOI nanoflakes and the uniformity of BiOI films. Notably, BiOI photoelectrodes with a (102) orientation exhibited exceptional photoelectrochemical performance. Through optimized spraying conditions, we successfully fabricated a uniform large-area BiOI film measuring 25 × 25 cm2 for the first time. Furthermore, utilizing BiOI as an intermediate template, we transformed its morphology into Bi2O3 and BiFeO3, paving the way for intermediate conversion methods of bismuth-based materials. This study advances the mechanistic understanding of BiOI growth via USP and establishes a multidimensional approach for the scalable synthesis of BiOI, thereby expanding the potential applications of large-area bismuth-based materials in energy and optoelectronic technologies.
研究领域:
材料科学
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能源技术
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光电子学
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2019
·
IF 6.361
Qi Wang,Hong Wu,Qiaoyuan Gao,Dagang Lin,Yongjie Fan,Ran Duan,Yanqing Cong,Yi Zhang
Plasmonic Bi 0 modified BiOI-Bi 2 O 3 composite (Bi/BiOI-Bi 2 O 3 ) was prepared via in situ UV reduction method. X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) techniques were carried out to identify the formation of semimetal Bi 0 . The results indicated that the dot-like bismuth particles were originated from the partial reduction of lattice Bi 3+ to Bi 0 by accumulated conduction band electrons in BiOI-Bi 2 O 3 . The as-prepared ternary composite exhibited enhanced visible-light-response, decreased charge transfer impedance and higher charge carrier density relative to unmodified BiOI-Bi 2 O 3 . Due to synergistic effect between plasmonic Bi 0 and BiOI-Bi 2 O 3 heterojunction , dramatically enhanced photocatalytic activity for phenol degradation can be achieved. After 3.5 h visible light irradiation, the value for phenol removal efficiency was ca. 60% and 100% on BiOI-Bi 2 O 3 and Bi/BiOI-Bi 2 O 3 , respectively. The calculated zero-order rate constant on Bi/BiOI-Bi 2 O 3 was 1.7 and 3.9 times that on BiOI-Bi 2 O 3 and Bi 2 O 3 , respectively. In addition to phenol, organic dyes (zwitterionic RhB , cationic MB and anionic Org II) were also used as model pollutants. Pronounced photocatalytic degradation by Bi/BiOI-Bi 2 O 3 can be observed, further confirming the importance of Bi 0 . Trapping experiments using different scavengers indicated that photogenerated holes were major active species during the degradation of phenol. Furthermore, good stability was also observed in 5 successive cyclic runs. This study opens a new strategy for in situ preparation of plasmonic Bi 0 modified composite.
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2021
·
IF 5.909
Haibo Li,Haojun Li,Zhennan Zhou,Hua Tong,Bei Long,Wei Liu,Weihua Li
The improvements of light absorption , charge separation and conductivity are the most common methods to enhance the degradation performance of photocatalysts. But the enhancement of hydrophily of photocatalyst is equally important and the designed approach is rarely reported. Here, a simple method to introduce hydrophilic hydroxyl (-OH) on BiOI is proposed by adding citric acid into the reactive system. Further, the conductive metal Bi is grown on BiOI by in-situ reduction. Benefiting from the elevated hydrophily, specific surface area, conductivity and photoinduced carrier separation efficiency, the optimized catalyst shows the outstanding photodegradation of methyl blue and tetracycline hydrochloride (both >90% removal ratio in 15 min). This work opens up a new way to design the high-performance photocatalyst.
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
JOURNAL OF POWER SOURCES
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2021
·
IF 9.127
Jiwu Zhao,Lan Xue,Zhenjie Niu,Liang Huang,Yidong Hou,Zizhong Zhang,Rusheng Yuan,Zhengxin Ding,Xianzhi Fu,Xu Lu,Jinlin Long
Sunlight-driven valorization of CO 2 into fuels is a promising solution to renewable energy storage , but the design of an integrated and efficient solar-to-chemical conversion system remains challenging. Herein, an all-solar-driven artificial photosynthetic system (APS) by tailoring photovoltaic-photoelectrochemical cell which can efficiently produce formic acid fuel from CO 2 and H 2 O with bias-free illumination is demonstrated. Guided by density functional theory (DFT) calculations, a BiOI–Bi (BOI–Bi) cathode catalyst is synthesized, which is highly selective for CO 2 to HCOOH conversion, and coupled with a single crystalline argon-treated TiO 2 (TiO 2 -Ar) photoanode, whose valence band edge is beneficial for the oxidation of H 2 O to O 2 . The APS exhibits high product selectivity, robust activity and good durability. A solar-to-HCOOH selectivity of 96.5% is obtained with a HCOOH yield of 108.2 mmol g −1 h −1 under bias-free illumination of AM1.5G. The device can operate stably for at least 12 h. In particular, an apparent photon quantum efficiency of 7.5% and a solar-to-chemical conversion efficiency (η SCC ) of 8.3% are recorded, rivaling all the incumbent precious-metal-free all-solar-driven components for CO 2 -to-HCOOH conversion. This study highlights the potential of BOI-Bi for CO 2 to HCOOH conversion with high selectivity and its integration into APS system to realize carbon-negative solar-to-chemical conversion with industrial relevance.
研究领域:
能源化学
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环境科学
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材料科学
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DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2025
·
IF 5.1
Xinyuan Li,Yuehui Liu,Jiaxin Li,Xia Li
The g-C 3 N 4 /BiOI composite photocatalysts were synthesized by a mechanically mixing method using BiOI with carbon nitride (g-C 3 N 4 ) as raw materials at room temperature. The crystal phase and micro-morphology of as prepared samples were characterized by XRD, TEM, XPS, UV–Vis, PL techniques, and so on. The efficiency of the prepared photocatalysts were evaluated by RhB degradation under visible light irradiation. Photocatalytic tests revealed that the g-C 3 N 4 -20 %/BiOI composite has the highest photocatalytic activity with a 97 % RhB degradation for 2.5 h. This attributed to efficient charge separation at the heterojunction interface: photogenerated electrons from BiOI's conduction band recombined with holes from g-C 3 N 4 's valence band as well as the remaining holes (BiOI) and electrons (g-C 3 N 4 ) drove redox reactions. These results provide a foundation for further exploration of bismuth iodide-based composites in wastewater treatment.
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高影响因子
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