COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
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IF 4.539
Jinsheng Zhou,Yugui Sun,Zixiang Huang,Zhongkuan Luo,Bin Yu,Xianghui Zou,Huiyuan Hu
A novel g-C 3 N 4 @InVO 4 semiconductor catalyzed surface-initiated photo atom transfer radical polymerization without catalysts residues problem has been developed. This method proceeded in N-methyl pyrrolidone/aqueous under atmospheric conditions. To verify the versatility of this method and enhance the antifouling properties of polyvinyl alcohol (PVA) hydrogel, two types of fluorinated polymer brushes (p6F/p13F) were successfully constructed on PVA hydrogel surface instead of the subsurface. The chemical bonds between PVA matrix and fluorinated polymer brushes (p6F/p13F) enhanced the surface cross link density and resulted in an increase of thermal stability and mechanical properties. All fluorinated PVA hydrogels with excellent antifouling properties was able to tackle the biofouling problem in complex environment of the human body. In addition, all fluorinated PVA hydrogels was no cytotoxicity for L929 and NDHF according to ISO 10993.5:2009. g-C 3 N 4 @InVO 4 catalyzed SI-photoATRP provides a novel surface modification technology for various biological or medical materials in the industrial-scale application.
研究领域:
材料科学
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聚合物化学
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生物医学工程
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表面科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Ling Yu,Hui Wang,Qi Huang,Hainan Liu,Qingkong Chen,Bojie Yuan,Qi Li,Xiaofei Zhao,Junwang Tang,Deqiang Zhao
A series of BiVO 4 /InVO 4 composites were synthesized by one-pot microwave method based on the ratio regulation of Bi/In. Consequently, the as-fabricated BiVO 4 /InVO 4 photocatalysts performed higher photocatalytic activities (100%) than pure InVO 4 and BiVO 4 . The prepared photocatalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), UV–vis diffuse reflection spectroscopy (UV–vis DRS) and Fourier transform infrared spectra (FTIR). The results indicate the formation of BiVO 4 /InVO 4 and it possesses enhanced solar light absorption. The enhanced reduction rate is ascribed to the efficient separation of photogenerated charge carriers due to the heterojunction formed between BiVO 4 and InVO 4 . The possible photocatalytic mechanism of BiVO 4 /InVO 4 composite was also discussed in detail.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
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2019
·Vol. 19
·期 12
·7840-7845
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IF 1.093
Cheng Zi-Qiang,Yu Ping,Shi Hai-Quan,Liu Zhi-Min,Cheng Guang-Ling,Cheng Hong-Bo,Liang Shan
In this study, In(OH)3 nanocrystals with three morphologies including rods, cubes and spheres were synthesized through a hydrothermal method. The morphology and crystalline were manipulated by controlling the growth speed and the addition of ascorbic acid. The InVO4
nanocrystals were obtained by a process sacrificing In(OH)3 templates. The phase transformation of rods and cubes generated size-controllable products, whereas that of nanospheres formed hollow micro-spheres. InVO4 nanocrystals display a brilliant yellow emission band
with the peak at 517 nm. Intriguingly, luminescent rare-earth Eu ions with red emission could be doped into InVO4 nanocrystals during the phase transformation. Excitation and the emission spectra indicated an excitation energy transfer from the vanadate to the rare-earth ions.
研究领域:
材料科学
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化学
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DOI
PubMed
高影响因子
Inorganic Chemistry Frontiers
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2025
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IF 6.4
Qianyu Chu,Guangmin Ren,Jingdan Zhao,Xiangchao Meng,Jie Meng,Zizhen Li
The photocatalytic nitrogen reduction reaction (NRR) is a sustainable green alternative to the Haber–Bosch process for ammonia production. However, due to the inert properties of dinitrogen, the photocatalytic activity in N2 reduction is still pretty low. Based on density functional theory calculations, this study finds that the formation energy of oxygen vacancies around the V site in InVO4 was significantly lower than that around the In site. This indicated that the V–O bond was thermodynamically less stable and tends to break preferentially. Therefore, selective cleavage of the V–O bond was achieved by subjecting InVO4 to transient high-temperature treatment via rapid Joule heating technology. This resulted in the directed construction of an InVO4-JH catalyst enriched with oxygen vacancies and exposing coordination-unsaturated V sites. The resulting InVO4-JH catalyst delivered a photocatalytic ammonia production rate of up to 35.28 μmol g−1 h−1 under ambient conditions without any sacrificial agent, while exhibiting excellent stability and reaction selectivity. Mechanistic studies and structural characterization confirmed that the formation of oxygen vacancies via V–O bond cleavage releases electrons, which reduce adjacent V5+ to V4+. This created localized electron-rich regions at exposed V sites. Theoretical calculations further confirmed that these exposed V sites act as the active centers of the reaction, not only significantly enhancing nitrogen adsorption but also substantially lowering the energy barrier of the hydrogenation step through alternative reaction pathways. This work provides a novel strategy for the rational design of highly efficient defect-engineered catalysts via targeted bond cleavage.
研究领域:
材料化学
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光催化
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无机化学
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能源化学
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环境催化
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纳米材料
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表面科学
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产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 5.2
Wenzhi Zhou,Mingkun Wu,Yuelong Liang,Zhenghai Yang,Jindong Yang,Mengkui Tian
Constructing heterojunctions is an effective strategy to enhance charge carrier separation and photocatalytic performance. In this study, a Bi 4 O 5 Br 2 /InVO 4 S-scheme heterojunction composite was prepared by a solvothermal method. The physicochemical properties were thoroughly investigated using various characterization techniques. Visible-light degradation experiments of ciprofloxacin (CIP) showed that the optimal sample, 5% Bi 4 O 5 Br 2 /InVO 4 (BI-5), exhibited the highest degradation activity (92.77%) along with excellent cycling stability. The effects of different environmental factors on the degradation performance were also systematically studied. The enhanced activity is attributed to the synergistic effect of the S-scheme heterojunction and increased oxygen vacancies. The S-scheme charge transfer, driven by the IEF at the heterointerface, enables spatial separation of photogenerated electrons and holes while preserving strong redox potentials, with reductive electrons accumulating in Bi 4 O 5 Br 2 and oxidative holes remaining in InVO 4 . Meanwhile, the introduction of InVO 4 creates abundant oxygen vacancies. These vacancies act as electron capture centers to suppress bulk recombination, introduce in-gap states that facilitate interfacial charge transfer, and provide additional active sites for surface reactions. Consequently, the S-scheme junction and oxygen vacancies jointly promote the separation, migration, and surface utilization of charge carriers, leading to significantly improved photocatalytic performance.
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2023
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IF 8.4
Hui Chen,Xin Yang,Min Lin,Dongmiao Li,Bing Wang,Jinni Shen,Jinlin Long,Wenxin Dai,Xuxu Wang,Zizhong Zhang
Mimicking natural photosynthesis to convert CO2 and H2O into highly valuable solar fuels is one of the ideal ways to alleviate the energy shortage and environmental pollution. However, the low mobility of photogenerated holes and sluggish H2O oxidation half reaction seriously retard the reduction efficiency of CO2 by photocatalysis. In this paper, we reported that the visible light-active SiC photocatalyst was inserted into the InVO4 nanoflower framework to form the dual Z-scheme heterojunction composited photocatalyst. The composited photocatalysts can not only neutralize the low mobility of photogenerated holes on SiC but also improve the H2O oxidation on InVO4 nanoflowers. This leads to an effective conversion of CO2 to CO without sacrificial agents under visible light irradiation as well as a good separation of photogenerated charge carriers in the composited photocatalyst for the subsequent reaction. In comparison to the parent InVO4 and SiC, the optimum CO yields over InVO4/SiC were 9.41 and 11.54 times, respectively. Under 3 h visible light irradiation, the yields of CO reach up to 142.6 μmol·g–1 and stability of O2 release over InVO4/SiC. This research offers a practical approach to developing an efficient photocatalyst for the conversion of CO2 with H2O.
研究领域:
材料科学
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环境科学
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化学工程
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能源科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
·
IF 8.6
Jingwen Wei,Ting Liang,Shiming Zhang,Jinhang Yang,Zhihong Li,Zuji Li,Songyu Fan,Zebin Yu,Yanping Hou
In this work, the Z-scheme layered double hydroxide (LDH)/reduced graphene oxide (RGO)/indium vanadate (InVO 4 ) heterojunction was synthesized by a simple hydrothermal synthesis. RGO , with excellent electron mobility, endowed rapid charge migration and separation between the CoAl-LDH and InVO 4 . Various characterizations and tests showed that the LDH/RGO/InVO 4 heterojunction exhibited superior optical properties, and its carriers’ transfer pathway conformed to Z-scheme mechanism. Under visible light illumination, CO was observed to be the main product during photocatalytic CO 2 reduction, and the LDH/RGO/InVO 4 -15 exhibited the highest CO yield of 204.86 μmol g −1 within 2 h, approximately 2.62 times of pristine CoAl-LDH (78.2 μmol g −1 ). In addition, LDH/RGO/InVO 4 -15 showed favorable structure stability and performance stability. In situ fourier infrared spectroscopy (ISFT-IR) analysis demonstrated that the predominant intermediates of CO 2 reduction process were carboxylate (COOH*) and bicarbonate (HCO 3 *). Accordingly, possible pathways of CO 2 reduction to CO were deduced. This work can advance the development of efficient Z-scheme heterojunction photocatalysts for CO 2 reduction.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2015
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IF 6.723
Bo Hu,Fanpeng Cai,Tianjun Chen,Mingshan Fan,Chengjie Song,Xu Yan,Weidong Shi
We synthesized g-C3N4/nano-InVO4 heterojunction-type photocatalyts by in situ growth of InVO4 nanoparticles onto the surface of g-C3N4 sheets via a hydrothermal process. The results of SEM and TEM showed that the obtained InVO4 nanoparticles 20 nm in size dispersed uniformly on the surface of g-C3N4 sheets, which revealed that g-C3N4 sheets was probably a promising support for in situ growth of nanosize materials. The achieved intimate interface promoted the charge transfer and inhibited the recombination rate of photogenerated electron–hole pairs, which significantly improved the photocatalytic activity. A possible growth process of g-C3N4/nano-InVO4 nanocomposites was proposed based on different mass fraction of g-C3N4 content. The obtained g-C3N4/nano-InVO4 nanocomposites could achieve effective separation of charge-hole pairs and stronger reducing power, which caused enhanced H2 evolution from water-splitting compared with bare g-C3N4 sheets and g-C3N4/micro-InVO4 composites, respectively. As a result, the g-C3N4/nano-InVO4 nanocomposite with a mass ratio of 80:20 possessed the maximum photocatalytic activity for hydrogen production under visible-light irradiation.
研究领域:
材料科学
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光催化
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纳米技术
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氢能
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环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）