Journal of Materials Chemistry C
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2024
·Vol. 12
·期 27
·10096-10103
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IF 5.7
Shaohua Li,Yi Zhang,Zihan Song,Zida Zheng,Xiaowei Zhang,Xueyun Liu
Luminescent solar concentrators (LSCs) serving as potential energy-conversion units have received great attention in building-integrated photovoltaics (BIPVs). However, the main challenge for BIPV-used LSCs is to maintain a high transparency while improving its photo-electric performance. In this work, we fabricate a flexible LSC by incorporating Bi-doped Cs2Na0.6Ag0.4InCl6 double perovskite (DP) QDs into polydimethylsiloxane (PDMS). The as-synthesized QDs show a large Stokes shift and broadband orange emission originating from the recombination between the localized states of [BiCl6] and [AgCl6] octahedra. The resultant LSC based on the above QDs exhibits a high internal quantum efficiency of up to 34.42%, which is relatively higher than that of other reported QD-based LSCs. More attractively, the average visible transmittance of the LSC remains 91.55%. By attaching a Si PV cell along the edge of the LSC, the optimal power conversion efficiency (PCE) and optical efficiency (ηopt) of the LSCs of 2.56% and 2.57%, respectively, can be reached under the irradiation of a solar simulator. In addition, the LSC presents good photostability after 80 h of xenon lamp irradiation. Therefore, we anticipate that the lead-free DP QD-based LSCs may provide a promising direction for high-efficiency transparent LSCs.
研究领域:
材料科学
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太阳能
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纳米技术
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光电技术
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产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
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2023
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IF 7.3
Fang Wei,Ting Luo,Yan Wang,Lichun Kong,JiuJu Feng,Zhengquan Li,Ji-Qing Lu,Fa Yang
A novel electrocatalyst for CO 2 -to-formate conversion at low overpotentials with abundant bimetallic interfaces aroused from Pd nanoparticles anchoring in the underlying Bi nanosheet (Pd-BiNS) was developed. This unique synthesis procedure undergoes a continuous reconstruction of Pd-BiOINS to Pd-Bi 2 O 2 CO 3 NS to Pd-BiNS, which was confirmed by in situ Raman spectra combined with quasi- in - situ electron microscopy. The optimized Pd 1 -BiNS exhibits a high Faradaic efficiency of 95 % for formate at only − 0.4 V versus reversible hydrogen electrode over 30 h electrolysis, breaking the limitation that metallic Pd-site is easily poisoned by the generated CO at low overpotentials. The in situ infrared spectroscopy indicates that Pd-BiNS has much suppressed *CO binding and enhanced *OCHO adsorption to inhibit the competing hydrogen evolution reaction by repelling surface water molecules, moreover, a systematic CO 2 RR mechanism with HCO 3 − participating as pre-proton donor for formate generation is unveiled. This work provides new insight into the multisite synergistic regulation at the atomic scale.
研究领域:
电化学
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材料科学
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催化
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可持续能源
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
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2024
·
IF 7.7
Suo Wang,Changyu Li,Huanshun Yin,Bin Gao,Zhengkun Yu,Yunlei Zhou,Jun Wang,Hongxia Xu,Jichun Wu,Yuanyuan Sun
Currently, achieving dual applications of Bi 2 O 2 CO 3 -based photocatalysts in photocatalytic degradation and sterilization under visible-light conditions is challenging. In this study, a novel Ag/Bi/Bi 2 O 2 CO 3 visible-light photocatalyst with bimetallic doping and rich oxygen vacancies was successfully synthesized using a one-pot hydrothermal crystallization method. The existence of oxygen vacancies was verified by X-ray photoelectron spectroscopy (XPS) and Electron spin resonance (ESR) analysis. The experimental results showed that Ag/Bi/Bi 2 O 2 CO 3 killed ∼100% (log 7) of antibiotic-resistant Escherichia coli (AR- E. coli ) within 60 min and degraded 83.81% of tetracycline (TC) within 180 min under visible light irradiation. Moreover, Ag/Bi/Bi 2 O 2 CO 3 can still remove 61.07% of TC in water after 5 cycles, showing excellent photocatalytic cycle stability and reusability. The possible degradation pathway of TC was determined by liquid chromatography-mass spectrometry. It was found that the main active substances in the photocatalytic disinfection of AR- E. coli were 1 O 2 , h + , and ·OH, while 1 O 2 was the dominant active species in the photocatalytic degradation of TC. This study presents a promising Bi 2 O 2 CO 3 -based visible light photocatalyst for treating both antibiotics (TC) and antibiotic-resistant bacteria (AR- E. coli ) in water.
研究领域:
环境科学
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材料科学
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化学
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水处理
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光催化
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Meixin Li,Pengfei Yu,Shanshan Li,Mati Ullah Khan,Shun Wang,Jiaqi Tian,Shuang Liu,Ling Kong,Zhiwei Chen
Aflatoxin B 1 (AFB 1 ) and ochratoxin A (OTA) are highly toxic mycotoxins prevalent in food and feed, posing severe threats to human and animal health. This work presents an innovative photoelectrochemical aptamer sensor for the detection of AFB 1 and OTA, leveraging a ternary BiOBr/Bi/BiOI heterojunction and Ag 2 S quantum dot-mediated signal amplification. The BiOBr/Bi/BiOI composite was synthesized via a one-step hydrothermal reduction using l -ascorbic acid (AA), exhibiting a high specific surface area to enhance biorecognition efficiency. In situ-assembled Ag 2 S quantum dots amplified photocurrent responses, while a single aptamer probe enabled specific dual-target recognition. Under optimized conditions, the sensor achieved exceptional sensitivity: linear ranges of 0.001–100 ng·mL −1 for both mycotoxins, with detection limits of 4.34 fg·mL −1 (AFB 1 ) and 13.54 fg·mL −1 (OTA). Validation in complex food matrices confirmed high accuracy and robustness. This platform not only provides a reliable method for mycotoxin monitoring but also establishes a versatile design paradigm for multiplexed detection of food contaminants.
研究领域:
分析化学
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食品科学
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生物传感器
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纳米技术
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环境监测
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Yanyu Song,Xianbo Sun,Long D. Nghiem,Jun Duan,Wen Liu,Yongdi Liu,Zhengqing Cai
Building a heterojunction is a fascinating option to guarantee sufficient carrier separation and transfer efficiency, but the mechanism of charge migration at the heterojunction interface has not been thoroughly studied. Herein, MIL-53(Fe)/Bi 4 O 5 I 2 photocatalyst with a Z-scheme heterojunction structure is constructed, which achieves efficient photocatalytic decontamination under solar light. Driven by the newly-built internal electric field (IEF), the formation of Fe-O-Bi electron migration channel allows for rapid separation and transfer of charge carriers at the heterojunction interface, confirmed by the material characterization and density functional theory (DFT) calculation. The narrower band gap and improved visible light response also contribute to the enhanced photocatalytic activity of composite materials. With levofloxacin as the target pollutant, the optimal MIL-53(Fe)/Bi 4 O 5 I 2 achieves complete removal of pollutant within 150 min, the photocatalysis rate of which is ca. 4.4 and 26.0 times that of pure Bi 4 O 5 I 2 and MIL-53(Fe), respectively. Simultaneously, the optimal composite material exhibits satisfactory photodegradation of seven fluoroquinolones, and the photocatalysis rates are as follows: lomefloxacin > ciprofloxacin > enrofloxacin > norfloxacin > pefloxacin > levofloxacin > marbofloxacin. DFT calculations reveal a positive relationship between degradation rate and Fukui index (ƒ 0 ) of main carbon atoms in seven fluoroquinolones. This study sheds light on the existence of electron migration channels at Z-scheme heterojunction interface to ensure sufficient photoinduced carrier transfer, and reveals the influence of pollutant structure on photolysis rate.
研究领域:
材料科学
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环境科学
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化学
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光化学
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产品关联
DOI
PubMed
高影响因子
Nanoscale
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2020
·Vol. 12
·期 37
·19293-19307
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IF 6.895
Fangmei Zhang,Shikai Liu,Na Zhang,Ye Kuang,Wenting Li,Shili Gai,Fei He,Arif Gulzar,Piaoping Yang
Hypoxia in tumor cells is regarded as the most crucial cause of clinical drug resistance and radio-resistance; thus, relieving hypoxia of tumor cells is the key to enhancing the efficacy of anticancer therapy. As a gas signal molecule of vasodilatation factors, nitric oxide (NO) can relieve the hypoxia status of tumor cells, thereby, enhancing the sensitivity of tumor cells to radiotherapy. However, considering complications of vascular activity, the level of NO required for radiotherapy sensitization cannot be obtained in vivo. In view of this, we design and fabricate a multifunctional bismuth-based nanotheranostic agent, which is functionalized with S-nitrosothiol and termed Bi–SNO NPs. X-rays break down the S–N bond and simultaneously trigger large amount of NO-releasing (over 60 μM). Moreover, the as-prepared Bi–SNO NPs not only possess the capability of absorbing and converting 808 nm NIR photons into heat for photothermal therapy, but also have the ability to increase X-ray absorption and CT imaging sensitivity. In addition, the collaborative radio-, photothermal-, and gas-therapy of Bi–SNO in vivo was further investigated and remarkable synergistic tumor inhibition was realized. Finally, no obvious toxicity of Bi–SNO NPs was observed in the treated mice within 14 days. Therefore, the Bi–SNO developed in this work is an effective nano-agent for cancer theranostics with well-controlled morphology and uniform size (36 nm), which could serve as a versatile CT imaging-guided combined radio-, photothermal- and gas-therapy nanocomposite with negligible side effects.
研究领域:
癌症治疗
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纳米技术
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放射学
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诊疗一体化
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Bo Fang,Jie Xie,Dazhao Yu,Xinyue Zhang,Chaojie Jing,Hui Guo,Yuzhu Li,Wenzuo Li,Jie Liu
The hydrophilic benzimidazole@ZIF-8@tannic acid (ZBT) nanoparticles and the pH-responsive modified epoxy (EP) coatings based on ZBT were prepared innovatively. The result exhibited that the ZBT had excellent compatibility with the EP coatings, and the addition of ZBT improved the protective properties of the EP coatings, which were attributed to the formation of the Zn(OH) 2 deposition film, the inhibitor adsorption film and the ferric tannate film on the steel substrate. Meanwhile, the original adhesion and wet adhesion strengths of the ZBT/EP coatings were both enhanced, which was mainly attributed to the enhanced interaction between the ZBT/EP coatings and the carbon steel, and the crosslinking density and the degree of curing of the coatings were also improved. After 173 days of immersion, the impedance value of the ZBT coatings remained at 7.89 × 10 7 Ω·cm 2 , while the EP coatings decreased to 3.94 × 10 3 Ω·cm 2 . The wet adhesion loss of EP and ZBT/EP coatings was 63.6 % and 27.1 %, respectively. In the end, the protective mechanism of the ZBT/EP coatings was first proposed.
研究领域:
材料科学
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腐蚀防护
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涂料技术
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Zhanjun Zhang,Liyuan Wen,Siying Liao,Xingye Zeng,Rujin Zhou,Ying Zeng
The deep removal of sulfide from fuel oil is the key to the production of clean energy using Bi 2 O 3 -MoO 3 binary semiconductor materials that effectively improve the activity of the catalytic reaction. In this study, the controllable synthesis of Bi 2 O 3 -MoO 3 binary metal composite oxides with different crystalline phases (α, β, and γ) was realized via microwave hydrothermal method at the pH of 1 through the variation of the theoretical Bi/Mo molar ratio. The catalytic oxidative desulfurization (ODS) experiments revealed that γ-Bi 2 MoO 6 catalyst had higher catalytic activity than α-Bi 2 Mo 3 O 12 and β-Bi 2 Mo 2 O 9 . At 65℃, γ-Bi 2 MoO 6 catalyst exhibited the outstanding deep catalytic oxidation ability for dibenzothiophene (DBT), benzo thiophene (BT), and 4,6-dimethyldibenzothiophene (4,6-DMDBT). After 7 times of recycling, the removal rate of DBT still reached 99.11%. According to the kinetic fitting data, the catalytic oxidative desulfurization of DBT in model oil by γ-Bi 2 MoO 6 conformed to the first-order kinetic equation with the reaction activation energy of 51.05 kJ/mol. Moreover, the possible mechanisms of ODS were explored. The ultrafast oxidation was concluded to be due to peroxo species produced through the action of composite metal oxides.
研究领域:
材料科学
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催化化学
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产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
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2023
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IF 3.8
Caiyun Liu,Huihui Niu,Dexin Wang,Yanshu Liu,Amir Said,Guo Wang,Chen-Ho Tung,Yifeng Wang
Selective oxidation utilizing sunlight and O2 is a cost-effective technique for converting organic raw materials into value-added products. We present a novel Bi-doped Ti-oxide cluster (TOC), Ti19Bi2, for the selective conversion of benzyl alcohols to benzaldehydes under sunlight irradiation. It is prepared as single crystals and precisely characterized by single-crystal X-ray diffraction. A structure–activity study is performed by combining experiments and density functional theory. Bi mainly contributes to the LUMO + 1 of Ti19Bi2, with a minor effect on the band gap energy. Bi doping causes the accumulation of photogenerated electrons at Bi sites, resulting in potent reducing power and high O2 activation ability, promoting charge separation and interfacial charge transfer. The Ti19Bi2 solar system showed good activity, selectivity, substrate scope, and catalyst recyclability in the selective oxidation of benzyl alcohols. It outperforms reference TOCs free of Bi, such as Ti8O8Bz16 (Bz = benzoate) and commercial TiO2 P25. Additionally, Ti19Bi2 is effective in photocatalytic CO2/epoxide cycloaddition and dye degradation reactions.
研究领域:
光催化
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材料科学
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化学工程
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环境科学
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产品关联
DOI
高影响因子
CHEMOSPHERE
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2023
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IF 8.8
Kexue Liu,Chunliu Liang,Huijuan Lv,Xiangfeng Yao,Xianxu Li,Jia Ding,Na Chen,Suo Wang,Wenrong Liu,Xue Hu,Jun Wang,Huanshun Yin
As a kind of plasticizer , butyl benzyl phthalate (BBP) presents a serious hazard to the ecosystem. Therefore, there is a strong need for an effective technique to eliminate the risk of BBP. In this work, a new photocatalyst of Bi/Bi 2 O 2 CO 3 /Bi 2 S 3 with an S-scheme heterojunction was synthesized using Bi(NO 3 ) 3 as the Bi source, Na 2 S as the S source, and DMF as the carbon source and reductant. Numerous techniques have been used to characterize Bi/Bi 2 O 2 CO 3 /Bi 2 S 3, such as scanning electron microscopy, high-resolution transmission electron microscopy , X-ray diffraction, and X-ray photoelectron spectroscopy. The improved photoactivity of Bi/Bi 2 O 2 CO 3 /Bi 2 S 3 was evaluated by photoelectrochemical response, electrochemical impedance spectroscopy, photoluminescence , UV–Vis diffuse reflectance spectroscopy, and electrochemical Mott Schottky spectroscopy. The enhanced photocatalytic activity of this composite for BBP degradation under simulated sunlight irradiation could be attributed to the surface plasmon resonance effect of Bi metal and the heterojunction structure of Bi 2 O 2 CO 3 and Bi 2 S 3 . The degradation rate of Bi/Bi 2 O 2 CO 3 /Bi 2 S 3 was 85%, which was 4.52 and 1.52 times that of Bi 2 O 2 CO 3 and Bi 2 S 3 , respectively. The prepared photocatalyst possessed good stability and reproducibility in eliminating BBP. The improved photocatalytic activity of Bi/Bi 2 O 2 CO 3 /Bi 2 S 3 was demonstrated with the formation of an S-scheme heterojunction, and the degradation mechanism was discussed with a liquid chromatograph mass spectrometer .
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
PubMed
高影响因子
Surfaces and Interfaces
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2023
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IF 6.2
Suo Wang,Huanshun Yin,Jia Ding,Haodong Chen,Lingsong Wang,Yunlei Zhou,Kexue Liu,Jun Wang
Bi/BiOBr/Bi 2 O 2 CO 3 heterojunction was synthesized by one-pot hydrothermal method using DMF as carbon source for Bi 2 O 2 CO 3 and reducing agent for Bi 3+ , NaBr as bromine source and Bi(NO 3 ) 3 as bismuth source. The photocatalytic properties were evaluated with photodegradation of rhodamine B, tetracycline and oxytetracycline under visible light with the degradation efficiency of 99.83% ( k = 0.5843 min −1 , 9 min), 81.75% ( k = 0.0247 min −1 , 60 min) and 70.23% ( k = 0.0225 min −1 , 60 min), respectively. The enhanced photoactivity is ascribed to the increased separation efficiency of photogenerated electron-hole pair and improved electron migration rate, causing by strong visible-light adsorption, surface plasmon resonance of Bi nanoparticles and the matched energy band between BiOBr and Bi 2 O 2 CO 3 . In addition, as nitrogen-containing organic pollutants of rhodamine B, tetracycline and oxytetracycline, N element was proved to form ammonium under photocatalysis with indoxyl blue method. More importantly, this work also evaluated the ecotoxicological effects of pollutant, indicating the decreased ecotoxicological effects of pollutant after degradation.
研究领域:
环境科学
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材料科学
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化学工程
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毒理学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Yanfang Li,Kang Xu,Huilin Hu,Lixia Jia,Yizhong Zhang,Ciren Zhuoga,Pengli Yang,Xin Tan,Wanqian Guo,Weichang Hao,Tao Yu,Jinhua Ye
Constructing atomic-level cation vacancies is an effective strategy to modulate the electronic properties of host materials, thus promoting charge transfer and redox reaction kinetics. Herein, ultrathin Bi 24 O 31 Br 10 nanosheets with cationic vacancy was synthesized via an inventive precipitation strategy by adding appropriate arginine. The difunctional arginine can changes the pH of the synthetic system and selectively deprive Bi atoms on the surface to form Bi vacancies through strong affinity between functional groups and cations. The abundant Bi vacancy decrease the Gibbs free energy change and provide channels to promote bulk adsorption of Cr(VI), thus effectively reduces the carrier migration distance during in situ bulk photocatalytic reduction of Cr(VI) and induces the formation of new impurity states to improve the utilization of visible light. Bi vacancy mitigates strong excitonic effects confined by significantly reducing exciton binding energies, thus effectively promote the separation of photo-generated charges and suppress reorganization of photon-generated carrier. Benefiting from these merits, these exclusive V Bi -Bi 24 O 31 Br 10 ultra-thin nanosheets exhibit superior reduction performance for Cr(VI), and the removal rate was more than 90% at universal pH (2–10). This work provides a new idea for the construction of cation vacancies and a feasible method for the removal of Cr(VI) under alkaline conditions.
研究领域:
材料科学
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环境科学
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化学
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纳米技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）