SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Shuhe Hu,Yanwei Xiao,Ao Zhang,Zhen Lin,Feng Li,Bingxue Zhang,Guibin Wang,Fengdong Qu,Dong Yao,Hao Zhang
Two-dimensional (2D) BiVO 4 nanosheets (NSs), featuring distinctive chemical properties and dangling-bond-rich surfaces, are promising for developing high-performance gas sensors. However, the previously reported 2D BiVO 4 NSs-based devices suffer from a low responsivity and poor selectivity. In this work, we introduce RuO 2 nanoparticles to boost the gas sensing properties of 2D BiVO 4 NSs-based sensor. Intriguingly, the RuO 2 -decoration changes the selectivity of the corresponding gas sensor from acetone to xylene. Compared to the pristine BiVO 4 sensor, the RuO 2 -BiVO 4 sensor displays a reduced optimal operating temperature of 260℃ and exhibits a response of 19.0–5 ppm xylene, reaching a five-fold enhancement. Simultaneously, the RuO 2 -BiVO 4 sensor also exhibits a rapid response and recovery time of 10 and 25 s respectively, as well as robust long-term stability with less than 5 % variation in response after a storage of 60 days. The improvement in sensing performance can be attributed to the RuO 2 -decoration from three aspects: heterojunction construction, surface state modulation and gas oxidation catalysis on the surface. This work not only provides a high-performance xylene sensing material but also provides insightful comprehension regarding the modification effects of RuO 2 .
研究领域:
材料科学
·
化学工程
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2023
·Vol. 52
·期 17
·5760-5770
·
IF 4
Shouli Bai,Shiyu Jia,Yingying Zhao,Yongjun Feng,Ruixian Luo,Dianqing Li,Aifan Chen
Photoelectrochemical (PEC) water splitting has been recognized as the most promising approach for directly converting solar energy into chemical energy, and substantial efforts have been made to develop a highly efficient and low-cost photoanode for enhancement of PEC water splitting efficiency due to sluggish water oxidation reaction kinetics. A ternary NiFePB-modified ZnO/BiVO4 heterojunction photoanode was simply assembled by low-temperature hydrothermal, metal–organic decomposition and electrodeposition methods to improve the water splitting efficiency; its photocurrent density for water oxidation reached 1.66 mA cm−2 at 1.23 V (vs. RHE); in comparison, that of ZnO is only 0.4 mA cm−2. The onset potential manifests a cathodic shift of ∼283 mV compared to ZnO. The IPCE and the ABPE respectively are 3.1 and 6.4 times those of ZnO, respectively. This improvement is ascribed to the efficient separation of photogenerated electrons and holes by the formation of a heterojunction between ZnO and BiVO4 and the enhancement in the oxygen evolution reaction kinetics by the decoration of the co-catalyst NiFePB as a hole acceptor.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PHYSICA B-CONDENSED MATTER
·
2026
·
IF 3.2
Bangxing Li,Wei Li,Guojie Zhang,Yanghua Wang,Xiaolin Hu
In this study, cobalt copper co-doped bismuth vanadate (CuCo-BiVO 4 ) was firstly used for tetracycline (TC) degradation. The doped BiVO 4 with different Co/Cu ratio was systematically synthesized by the hydrothermal method. The results of the photocatalytic degradation shown that Co 0.02 Cu 0.01 Bi 0.97 VO 4 exhibited the optimal degradation activity, which may attribute to the smallest grain size (338 nm) of Co 0.02 Cu 0.01 Bi 0.97 VO 4 . The elemental distribution analysis confirms the coexistence of Cu 2+ and Co 2+ dopants. XRD and XPS analysis indicate that Cu 2+ or Co 2+ dopants replaced Bi 3+ in BiVO 4 . The band gap of Co 0.02 Cu 0.01 Bi 0.97 VO 4 was 2.35 eV, smaller than pure BiVO 4 , as calculated from the Tauc diagram. The highest degradation efficiency of 81.7% can be reached within 2 h. The rest degradation efficiency can reach about 70% of fifth recycling experiment, which shows good degradation stability of Co 0.02 Cu 0.01 Bi 0.97 VO 4 . Therefore, Co-Cu co-doped BiVO 4 stratage is a promising method for TC degradation.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2017
·
IF 0.963
Min-Jie Zhou,Mang Lu,Guo-Xiang Wang,Li-Chao Liu,Hu Wu,Wen-Yuan Xu
In this study, reduced grapheme oxide (RGO)/BiVO4 composite was prepared and characterized by FT-IR, XRD, and UV spectrum. Photo-chemically-mediated atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) was successfully performed at 25°C in N,N-dimethylformamide (DMF) with RGO/BiVO4 as photoinitiator, FeCl3·6H2O/triphenylphosphine (PPh3) as catalyst, and ethyl 2-bromoisobutyrate as ATRP initiator. MMAs were polymerized in a controlled manner under ultraviolet (UV) light and sunlight conditions. The results show that a first-order kinetics model was obeyed up to higher conversion. The reaction gave well-controlled PMMA with Mn,GPC close to the theoretical value and a narrow MWD (Mw/Mn<1.5). The experiments of light on and off reveal the photoredox cycle between Fe(III) and Fe(II) species. The living character was further verified by the chain extension experiments.
研究领域:
高分子化学
·
光氧化还原催化
·
材料科学
·
纳米复合材料
·
可控自由基聚合
✓ 已验证
DOI
高影响因子
SURFACE REVIEW AND LETTERS
·
2021
·
IF 1.152
HENGXIN REN,YUSHAN QIN,YUGUANG LV
A new type of poly pyrrole/graphene oxide/bismuth vanadate (PPy/GO/BiVO 4 ) ternary nanocomposite with excellent visible light-driven photocatalytic degradation performance was prepared by the traditional hydrothermal method. The photocatalyst samples were characterized and analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR) and UV-vis diffuse reflectance spectroscopy (UV-vis DRS). Under visible light irradiation, the photocatalytic activity of the samples in the degradation of Rhodamine B (RhB), which was used to simulate organic dye pollutants in the real natural environment, was detected. The experimental results demonstrated that the photocatalytic degradation performance of PPy/GO/BiVO 4 was reinforced after loading GO and PPy. Among all the photocatalyst samples with different PPy content, the PPy/GO/BiVO 4 nanocomposite containing 5% PPy showed the highest photocatalytic activity. The stability test suggested that the nanocomposite remained stable even after four cycles of photocatalytic degradation of RhB. As a novel type of visible light-driven photocatalyst, PPy/GO/BiVO 4 can be utilized to degrade pollutants in waste water.
研究领域:
材料科学
·
环境化学
·
纳米技术
·
光催化
✓ 已验证
DOI
高影响因子
Cell Reports Physical Science
·
2026
·
IF 6.9
Lan Wen,Kaijian Zhu,Xinyi Zhang,Hoi Ying Chung,Songying Qu,Hao Wu,Fatwa F. Abdi
The photoelectrochemical (PEC) glycerol oxidation reaction (GOR) provides a sustainable route to convert biomass waste into value-added chemicals, but controlling product selectivity remains a key challenge. In this study, we show that light intensity influences PEC GOR selectivity on BiVO 4 photoanodes. Increasing illumination from 5 to 100 mW/cm 2 shifts the reaction from partial oxidation products—glyceraldehyde (GLAD), glycolaldehyde (GCAD), and dihydroxyacetone (DHA)—toward the deeply oxidized product formic acid (FA). Frequency-resolved measurements, including intensity-modulated photocurrent spectroscopy and PEC impedance spectroscopy, reveal that higher light intensities enhance surface hole accumulation and interfacial charge transfer, enabling multi-electron oxidation pathways. Control experiments further elucidated the reaction mechanism, identifying GLAD as the primary precursor to FA and GCAD as a secondary intermediate that is further oxidized under higher illumination. These findings provide important insights into the selective control of the PEC GOR, offering a potential strategy for optimizing product distribution in solar-driven biomass valorization and chemical synthesis.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2024
·Vol. 14
·期 23
·1870
·
IF 4.4
Hongru Zhao,Xinkong Wei,Yue Pei,Weihua Han
Bismuth Vanadate (BiVO4) is a promising photoanode material due to its stability and suitable bandgap, making it effective for visible light absorption. However, its photoelectrocatalytic efficiency is often limited by the poor transport dynamics of photogenerated carriers. Recent research found that varying the atomic arrangement in crystals and Fermi levels across different crystal orientations can lead to significant differences in carrier mobility, charge recombination rates, and overall performance. In this work, we optimized the atomic arrangement by controlling the crystal growth direction to improve carrier separation efficiency using a wet chemical method. Systematic investigations revealed that the preferential [010]-oriented BiVO4film exhibits the highest carrier mobility and photocurrent density. Under an applied bias of 1.21 V (vs. RHE) in a 0.5 M Na2SO4electrolyte, it achieved a photocurrent density of 0.2 mA cm−2under AM 1.5 G illumination, significantly higher than that of the [121]-oriented (0.056 mA cm−2) and randomly oriented films (0.11 mA cm−2). This study provides a deeper understanding of the role of crystal orientation in enhancing photoelectrocatalytic efficiency.
研究领域:
材料科学
·
电化学
·
可再生能源研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Cheng-bin Zheng,Ze-chen Du,Jia-ke Li,He-dong Jiang,Xin Liu,Ping-chun Guo,Hua Zhu,Yan-xiang Wang
The development of industrialization has increased the prominence of the gradual consumption of non-renewable resources and the environmental problems due to fossil fuels , gradually increasing the use of solar energy. Therefore, converting solar energy into electric energy through energy collection and storage systems and its applications have become a research hotspot in recent years. This study constructed a novel all-in-one photorechargeable supercapacitor using bismuth vanadate (BiVO 4 ), reduced graphene oxide hydrogel (rGH), and Zn (CF 3 SO 3 ) 2 as photoanode , cathode, and electrolyte, respectively. Consequently, the device exhibits a 309.3 F/g high capacitance at 0.1 A g −1 under illumination with 95 mW cm −2 light intensity , 26.3 % higher than normal electric charging, and the supercapacitor has a 100 % capacity retention rate after 10,000 testing cycles under photoelectric synergistic charging and discharging. The as-constructed supercapacitor integrated with solar energy collection and electrochemical energy storage has potential applications in wearable electronic products and other fields.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2016
·
IF 3.782
Ying Wang,Fuyang Liu,Yingjie Hua,Chongtai Wang,Xudong Zhao,Xiaoyang Liu,Hongdong Li
Tb 3+ doped BiVO 4 has been successfully synthesized by a simple microwave-assisted hydrothermal method at 140 °C for 30 min. The structure, morphology and optical property of the Tb 3+ doped BiVO 4 products have been systematically investigated. This study indicates that the incorporation of Tb 3+ could induce the conversion of structure from monoclinic to tetragonal for BiVO 4 . Furthermore, the as-obtained Tb 3+ doped BiVO 4 samples showed an obvious morphological change: the hollow square rod-like BiVO 4 crystal gradually changed to spindle-like crystal. The Tb 3+ doped BiVO 4 products exhibited extraordinary photocatalytic activity for Methylene Blue (MB) degradation under visible light irradiation. The doped BiVO 4 at a molar ratio of 2 at% (Tb and Bi) with a mixture of monoclinic and tetragonal phases showed and prominent photocatalytic degradation rate, which reached 99.9% in 120 min. The results suggest that the differences in the photocatalytic activity of these BiVO 4 crystals with different Tb 3+ doping concentrations can be attributed to the change of crystalline phases, and the coexistence of the monoclinic/tetragonal phases in BiVO 4 products, which improve the efficient charge separation and transportation.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
·
2023
·
IF 2.6
Lili Miao,Zheng Li,Yu Chen,Yiming Gao,Junwei Di
A sensitive photoelectrochemical biosensor was constructed for the detection of chlorpyrifos. The sensor was prepared on indium tin oxide (ITO) electrode using photoelectric material bismuth vanadate (BiVO4) and acetylcholinesterase (AChE). It is found that the photocurrent of ITO/BiVO4 electrode was largely dependent on its treatment temperature. The highest anodic photocurrent response of the ITO/BiVO4 photoelectrode was obtained after the treatment at 300°C. The thiocholine, produced in the catalytic reaction at ITO/BiVO4/AChE electrode surface, can greatly enhanced the anodic photocurrent. In addition, the adsorption of chlorpyrifos on the surface of the AChE caused a decrease in the intensity of the photocurrent. Under the optimisation of experimental conditions, the decrease of the photocurrent showed a good linear range from 1 pM to 10 nM under irradiation of visible light. The detection limit is calculated as 0.25 pM with a 10% inhibition rate. The ITO/BiVO4/AChE photoelectrode exhibited high sensitivity, acceptable stability and good reproducibility. The biosensor can be provided to the potential applications for detection of pesticide residues in food.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2022
·
IF 2.719
Zuxing Zhang,Liying Zhai,Mingqing Li,Jiahui Wu,Li Li
The obtained RGO/BiVO 4 composites were first applied to tetracycline hydrochloride (TCH) photoelectrochemical (PEC) monitoring platform. The RGO/BiVO 4 nanocomposites exhibited higher PEC activity, which benefited from the accelerated electron transfer induced by loading of RGO. The RGO/BiVO 4 electrode exhibited a linear response in the concentration range of 0.1 μM – 1 mM with a sensitivity of 45 μA mM cm −2 and a detection limit of 0.922 μM. Furthermore, the designed RGO/BiVO 4 PEC sensor exhibits good reproducibility, long-term stability and selectivity. In summary, the designed materials have outstanding electrochemical properties, which provide ideal candidates for PEC detection of TCH.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Hewei Yuan,Yaozhong Zhang,Yanjie Su,Nantao Hu,Jianhua Yang,Min Zeng,Zhi Yang,Yafei Zhang
Photoelectrochemical (PEC) water splitting is a promising technology to produce renewable hydrogen, which still faces problems of low photoelectric efficiency and instability. This work introduces a novel Type II heterojunction consisting of BiVO 4 thin film and diamond-like carbon (DLC) to the PEC system as a photoanode and achieves an increased PEC water-splitting activity. Compared to the pure BiVO 4 , the BiVO 4 /DLC heterojunction has an increased photocurrent density from 0.79 mA cm −2 to 2.39 mA cm −2 at 1.23 V vs RHE, and the IPCE from 4.8 % to 23.4 %. After 120 min (180 cycles) of PEC water splitting, the BiVO 4 /DLC heterojunction retains up to 82.3 % of the initial photocurrent density value, while the pure BiVO 4 has only 33.99 % remaining under the same conditions. Furthermore, the PEC system of BiVO 4 /DLC reaches the evolution rate of hydrogen of over 0.32 mmol h −1 cm −2 , which is much higher than that of its counterparts. We ascribe the enhancement in PEC performance to the Type II heterojunction photoanodes that greatly promote carrier mobility and reduce the recombination rate of electron-hole pairs. We also identify that the band bending and depletion layer are the main reasons for the decrease in charge transfer and interface resistance. It is demonstrated that the sp 2 carbon phase in DLC acts as a conductive channel to improve the separation and migration efficiency of free carriers, while the sp 3 carbon phase provides stable support and passivation effect to the photoanode, thereby leading to an enhancement for both PEC water splitting performance and the long-time stability. This work provides an effective way to improve the BiVO 4 photoanode-based PEC water-splitting systems.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）