CHEMICAL PHYSICS LETTERS
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2015
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IF 1.897
Yanyan Cao,Naidi Liu,Jie Tian,Yanxia Liu,Xiao Zhang
BiPO 4 /Yb 3+ samples were synthesized by the solvothermal method. The phase and morphology of BiPO 4 /Yb 3+ samples were characterized by XRD, FTIR, SEM and TEM. The XRD and FTIR results indicated that BiPO 4 /Yb 3+ samples have the pure hexagonal phase. The SEM and TEM images showed that BiPO 4 /Yb 3+ samples have the rod-like morphology. The doping Yb 3+ ions would not influence the phase and morphology of BiPO 4 /Yb 3+ samples, but had obvious influence on the optical absorption property and photocatalytic activity. The doping Yb 3+ ions could induce the blue shift of absorption edges and the enhancement of photocatalytic activity.
研究领域:
材料科学
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光催化
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纳米材料
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2011
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IF 3.068
Guangfang Li,Yao Ding,Yafang Zhang,Zhong Lu,Hongzhe Sun,Rong Chen
A facile and rapid microwave irradiation method was explored for the synthesis of bismuth phosphate (BiPO 4 ) nanostructures with various morphologies and phases in different solvents. The BiPO 4 products were characterized by powder X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), UV–vis diffuse reflection spectroscopy (DRS). The effect of the solvents on the formation of the BiPO 4 nanostructures was discussed on the basis of experimental results. The different BiPO 4 nanostructures exhibited different optical properties , BET surface areas and photocatalytic activities on the degradation of methyl orange (MO) under UV and visible light irradiation. The experimental results suggested that the photocatalytic activity was closely relative with the crystalline phase and band gap of BiPO 4 . Hexagonal BiPO 4 nanoparticles with narrow band gap showed the highest photocatalytic performance.
研究领域:
材料科学
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环境科学
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JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
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2020
·Vol. 20
·期 5
·2705-2712
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IF 1.134
Luk Hsiang-Ning,Chen Yi-Hsin,Hsieh Chia-Ying,Han Yan Wei,Wu Ren-Jang,Chavali Murthy
A novel sensing material of cobalt oxide-bismuth phosphate (Co3O4–BiPO4) was prepared by the hydrothermal method. Thus prepared sensing material was characterized by X-ray diffraction analysis (XRD) and transmission electron microscopy (TEM). The
sensor was used for the determination of epinephrine by using modified Co3O4–BiPO4 on glassy carbon electrode (GCE). The cyclic voltammetry (CV) and differential pulse voltammetry (DPV) methods showed a wide linear response to a concentration range, from
1.71 to 55.00 μM, and the epinephrine detection limit for this sensing system was found to be 1.334 μM. The Co3O4–BiPO4 electrode has very high selectivity towards the detection of epinephrine supported by an interference test. The
epinephrine sensor seems very advantageous for future clinical health and medical sectors.
研究领域:
分析化学
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生物医学工程
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PubMed
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
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2017
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IF 2.552
Peng Li,Linna Guo,Chenxi Liang,Tiesheng Li,Penglei Chen
A series of BiPO 4 :Yb 3+ /Er 3+ samples with different concentrations of Sc 3+ ions were prepared by two different methods: one is solvothermal synthesis process and subsequent calcination route, and the other is solid-state reaction method. On one hand, hexagonal and monoclinic phases of BiPO 4 :Yb 3+ /Er 3+ were successfully obtained by the above two synthesis methods, respectively, and the UC luminescence intensity depended a lot on the crystalline phases. On the other hand, the dual-wavelength sensitive UC emission properties of BiPO 4 :Yb 3+ /Er 3+ /Sc 3+ were firstly investigated. It was found the UC emission intensity was significantly enhanced by introducing appropriate Sc 3+ ions to the system whether under excitation at 980 nm or 1550 nm. Moreover, the UC emission mechanisms under the excitation at 980 as well as 1550 nm were also proposed on the base of experimental results.
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CERAMICS INTERNATIONAL
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2018
·Vol. 44
·期 6
·6918-6925
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IF 3.057
Fan Yang,Ximiao Zhu,Jianzhang Fang,Dongdong Chen,Weihua Feng,Zhanqiang Fang
In this work, a plasmonic metallic Bi deposited BiPO 4 /BiWO 6 heterostructure with surface oxygen vacancies was synthesized through one-step solvothermal method. The successful synthesis of material was confirmed by a series of characterization techniques such as X-ray diffraction, X-ray photoelectron spectroscopy, UV–vis diffuse reflection spectroscopy, electron paramagnetic resonance, transmission electron microscope , photoluminescence spectroscopy. The characterization results showed that the surface oxygen vacancies were concentrated on the surface of BiPO 4 . The photocatalytic activity of Bi/BiPO 4 /Bi 2 WO 6 was evaluated by photocatalytic decomposition of methylene blue and 2,4-Dichlorophenol under simulated sunlight irradiation. Meanwhile, with the addition of hydrogen peroxide , the photocatalytic efficiency would be further improved. The presence of rich surface oxygen vacancies and photo-induced electron were beneficial to produce hydroxyl radicals. The enhanced photocatalytic activity of Bi/BiPO 4 /Bi 2 WO 6 heterostructure was ascribed to high separation efficiency of photo-generated electron–hole pairs, which aroused by the synergistic effects of heterojunction among different components, surface plasmonic resonance effect of Bi, and the surface oxygen vacancies.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Zhinian Liu,Guojun Li,Mingjia Zhang,Chen Zhang,Wangsheng Zheng,Xiangting You,Shule Zhang,Qin Zhong
The lack of compactness in heterojunction interfaces and poor charge separation is a great challenge in developing high-efficiency heterojunction photocatalysts . Herein, a novel Bi 4 Ti 3 O 12 -BiPO 4 heterojunction was successfully prepared for the first time by epitaxial growth of BiPO 4 on the surface of Bi 4 Ti 3 O 12 nanosheets . The optimized Bi 4 Ti 3 O 12 -BiPO 4 -0.5 increased the NO oxidation efficiency to 73.05%, surpassing pure Bi 4 Ti 3 O 12 (63.45%) and BiPO 4 (8.35%). Experiments and theoretical calculations indicated that the closely contacted heterointerface between BTO and BPO promoted the generation of the built-in electric field, which led to the formation of the Z- scheme transfer pathway for the photogenerated carriers . Therefore, the separation of photogenerated carriers was facilitated while retaining high redox potential , generating more ·O 2 – and ·OH to participate in NO oxidation. Furthermore, the adsorption of NO and O 2 was enhanced by introducing BiPO 4 , further improving the photocatalytic NO oxidation performance. This work emphasizes the critical role of heterointerface in accelerating charge transfer, providing a basis for the design and construction of tightly contacted heterojunction photocatalysts .
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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PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
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2021
·
IF 3.927
Hongjun Fang,Yusong Pan,Haixian Yan,Linfeng Xu,Chengling Pan
Novel plasmonic photocatalysts have been extensively investigated because of their advantages in efficient light absorption and surface plasmon resonance effect (SPR). Herein, plasmon-induced BiPO 4 /Ag/Ag 3 VO 4 heterostructures were constructed by in-situ partially reduction along with hydrothermal approach. Photo-degradation results revealed that BiPO 4 /Ag/Ag 3 VO 4 -1.2 (abbreviation as Bi/Ag-1.2) product presented a significant enhancement of photoactivity for Methyl orange-MO, Congo red-CR and tetracycline-TC degradation under visible light irradiation, which was higher than that of pristine BiPO 4 and Ag/Ag 3 VO 4 , respectively. Moreover, this excellent performance of Bi/Ag-1.2 was mainly ascribed to the synergistic effect consisting of intimate heterostructure between BiPO 4 and Ag/Ag 3 VO 4 and SPR effect of Ag, thus ensuring an accelerated separation and transfer of photo-generated carriers and promoting the absorbance of visible light. The trapping test and electron spin resonance further demonstrated that h + and ·O 2 − species are the vital active species in the photocatalytic reaction. Meanwhile, a plausible photocatalytic mechanism induced by plasmon-based heterojunctions was systematically proposed.
研究领域:
材料科学
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环境科学
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Catalysts
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2022
·Vol. 12
·期 7
·774
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IF 4.501
Wei Qian,Wangtong Hu,Zhifei Jiang,Yongyi Wu,Zihuan Li,Zenghui Diao,Mingyu Li
In recent years, with the large-scale use of antibiotics, the pollution of antibiotics in the environment has become increasingly serious and has attracted widespread attention. In this study, a novel CDs/g-C3N4/BiPO4(CDBPC) composite was successfully synthesized by a hydrothermal method for the removal of the antibiotic tetracycline hydrochloride (TC) in water. The experimental results showed that the synthesized photocatalyst was crystalline rods and cotton balls, accompanied by overlapping layered nanosheet structures, and the specific surface area was as high as 518.50 m2/g. This photocatalyst contains g-C3N4and bismuth phosphate (BiPO4) phases, as well as abundant surface functional groups such as C=N, C-O, and P-O. When the optimal conditions were pH 4, CDBPC dosage of 1 g/L, and TC concentration of 10 mg/L, the degradation rate of TC reached 75.50%. Active species capture experiments showed that the main active species in this photocatalytic system were holes (h+), hydroxyl radicals, and superoxide anion radicals. The reaction mechanism for the removal of TC by CDBPC was also proposed. The removal of TC was mainly achieved by the synergy between the adsorption of CDBPC and the oxidation of both holes and hydroxyl radicals. In this system, TC was adsorbed on the surface of CDBPC, and then the adsorbed TC was degraded into small molecular products by an attack with holes and hydroxyl radicals and finally mineralized into carbon dioxide and water. This study indicated that this novel photocatalyst CDBPC has a huge potential for antibiotic removal, which provides a new strategy for antibiotic treatment of wastewater.Keywords:carbon dots;photocatalysis;graphitic carbon nitride;bismuth phosphate;tetracycline hydrochloride
研究领域:
环境科学
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材料科学
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JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2026
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IF 4.4
Yuwei Wang,Jing Liu,Liquan Fan,Zhehui Fan,Boyu Lv,Jiannan Liu
To solve the problems of narrow light absorption range and relatively fast photogenerated carrier recombination of traditional photocatalysts, this paper synthesizes a new core-shell polydopamine/bismuth phosphate (PDA/BiPO 4 ) composite material, which has an S-scheme heterojunction structure. The two – step solvothermal method is adopted, and then in-situ self-polymerization of dopamine is carried out. Adding polydopamine (PDA) not only broadens the light response range of the material but also greatly improves photothermal conversion efficiency. The experimental results demonstrated that the optimized 10% PDA/BiPO 4 composite achieved a degradation efficiency of 92% for Methylene Blue (MB) in 150 min under simulated solar irradiation. The kinetic rate constant (0.01612 min −1 ) was approximately 7 times that of pure BiPO 4 . The wide light absorption of PDA and the S-scheme heterojunction make the composite material have excellent photothermal properties, and the surface temperature rises to 108.3 °C within 120 s. Mechanism analysis shows that the S-scheme charge transfer pathway suppresses the recombination of electron-hole pairs, and the synergistic photothermal effect accelerates the interface catalysis. This study provides a multifunctional strategy integrating enhanced light absorption, efficient charge separation, and photothermal conversion, and provides new insights for designing high-performance full-spectrum responsive photocatalysts.
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Journal of Water Process Engineering
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2025
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IF 6.7
Ning Liu,Pengxiao Liu,Zhen Du,Zhenxing Zeng,Yongqiu Zheng,Chenyang Xue,Jing Lu
Advancing novel photocatalytic systems for efficient antibiotic removal is a key strategy for sustainable water purification. However, it remains technically challenging to balance high charge separation efficiency with broad-spectrum light absorption. Herein, the g-C 3 N 4 /Bi/BiPO 4 composite photocatalyst featuring a Z -scheme heterojunction mediated by Bi nanoparticles was synthesized and systematically evaluated. This unique structure integrates surface plasmon resonance (SPR) to simultaneously enhance charge separation and visible light absorption, addressing limitations of traditional g-C 3 N 4 -based systems. Photoelectrochemical characterization confirmed its superior charge separation and rapid electron transfer. Energy band analyses via UV–Vis DRS, XPS valence, and Mott-Schottky tests revealed that the Z -Scheme heterojunction, formed through an internal electric field and mediated by Bi, effectively enhanced the processes of charge separation and light absorption synchronously. Under simulated solar light irradiation, the composite exhibited a 97.5 % tetracycline degradation rate within 90 min, with a reaction rate constant of 4.00 × 10 −2 min −1 , significantly outperforming individual g-C 3 N 4 and BiPO 4 catalysts. Reactive species trapping experiments identified ·OH, ·O 2 − , 1 O 2 and h + as the dominant reactive species in tetracycline degradation. Overall, this study provides a solid theoretical foundation and experimental support for the practical application of photocatalytic technology in wastewater treatment.
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高影响因子
Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 26
·13671-13678
·
IF 7.443
Jing Qian,Zhenting Yang,Chengquan Wang,Kan Wang,Qian Liu,Ding Jiang,Yuting Yan,Kun Wang
The design and exploitation of photoelectrochemical (PEC) sensors with advanced nanomaterials is of great importance to achieving the goal of sensitive and inexpensive detection. In this paper, a series of bismuth phosphate (BiPO4) functionalized reduced graphene oxide (BiPO4–rGO) nanocomposites (NCs) were prepared using a one-step solvothermal method. Compared with the pure BiPO4 nanoparticles (NPs), all of the as-prepared BiPO4–rGO NCs with different starting mass ratios of graphene oxide (GO) to BiPO4 showed an enhanced PEC response. On this basis, the BiPO4–rGO0.03 NCs (the starting mass ratio of GO to BiPO4 = 0.03) with the best PEC response were used for the PEC determination of chlorpyrifos. With the addition of chlorpyrifos, the formation of a Bi–chlorpyrifos complex on the BiPO4 NPs gave rise to an increase in steric hindrance which caused the electron transfer of BiPO4 NPs to trail off towards the electrode surface, and consequently resulted in an obvious decrease in photocurrent. The designed PEC sensor displayed a linear response for chlorpyrifos in the range from 0.05 to 80 ng mL−1 with a low detection limit of 0.02 ng mL−1 (S/N = 3). The common interferents such as methyl parathion, pentachlorophenol, and carbaryl had no obvious influence on the detection of chlorpyrifos, although these substances were reported to influence the PEC sensing of chlorpyrifos to some extent. The applicability of this method was also investigated by the determination of chlorpyrifos in wastewater samples with satisfactory results. Thus, it is expected that the resulting BiPO4–rGO NCs can serve as a potential photoactive material for PEC sensing related applications.
研究领域:
分析化学
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环境科学
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Lei Jin,Yunlong Chen,Hailin Tian,Xiang Liu,Yingping Huang,Ruiping Li,Chuncheng Chen,Zhongxu Dai,Di Huang
The selective cleavage-bond of glyphosate is still a major challenge, especially in biodegradation and chemical degradation like advanced oxidation process (AOP). In this work, we found that the BiVO 4 and BiVO 4 /BiPO 4 heterogeneous photocatalysts generated different intermediates during the photocatalytic degradation of glyphosate. The main intermediate product by the BiVO 4 photocatalyst was aminomethylphosphonic acid (AMPA, reaching to 81%) with high biological toxicity, which means glyphosate was degraded through the AMPA pathway. While the BiVO 4 /BiPO 4 heterogeneous photocatalysts showed a significant inhibition of the accumulated AMPA (31%) at pH = 4, leading to the generation of benign products, such as sarcosine, acetic acid and PO 4 3- . More importantly, the BiVO 4 /BiPO 4 -2 photocatalyst barely generated AMPA (less than 5%) at pH = 10. The lower AMPA concentration in our experiments was not attributed to its rapid degradation rate because AMPA could not be degraded from acidic (pH = 4) to alkaline (pH = 10). It indicated that glyphosate suffered from two cleavage-bond pathways between the BiVO 4 and BiVO 4 /BiPO 4 heterogeneous photocatalysts, which had been proved by mass spectrometry (MS) results. The attenuated total reflectance Fourier transforms infrared (ATR-FTIR) spectrum and density function theory (DFT) demonstrated that the adsorption sites of the BiVO 4 /BiPO 4 -2 photocatalyst occurred on the phosphate group of glyphosate molecules at pH = 10, which facilitated the C–P bond cleavage and inhibited the formation of AMPA. We found that pH-mediated BiVO 4 /BiPO 4 dipole controlled and changed glyphosate electron cloud distribution, played an important role in the selective cleavage-bond of glyphosate. These results revealed both scientific and environmental significance for the efficient degradation of glyphosate through benign intermediates in soil and water.
研究领域:
环境科学
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光催化技术
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化学工程
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高影响因子
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