CATALYSIS COMMUNICATIONS
·
2015
·
IF 3.699
Feng Ding,Sizhao Zhang,Xuegang Luo,Xiaoyan Lin
A novel S/BiOCl thermocatalyst in response to heat excitation was successfully synthesized by a one-step method and then added into polymeric matrix to give corresponding films. The results obtained show that the surfaces of as-prepared films with S/BiOCl were truly degraded via thermocatalytic reactions at ambient conditions. The average molecular weights of experimental films have fallen dramatically, comparing to the comparisons. In addition, the changes of chemical groups were simultaneously observed in the process. Thus this thermocatalytic process maybe a very fascinating route to come true the degradation of polymeric films with lower temperature triggered.
研究领域:
材料科学
·
高分子化学
·
环境功能材料
·
催化化学
·
纳米材料
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DOI
高影响因子
ACS Applied Energy Materials
·
2026
·Vol. 9
·期 15
·10211-10218
·
IF 5.5
Bao Yunfeng,Liu Hailong,Zou Peng,Yuan MengZhu,Zheng Anmin,Zhang Fuxiang
The development of inorganic photocatalysts with broad visible-light response is crucial for achieving efficient solar-driven H 2 O 2 production. In this work, based on a high-entropy mixing strategy, a high-entropy metal oxychloride (Bi 2 R mix O 4 Cl, R mix = La, Nd, Sm, Gd, and Y) was designed and synthesized. This material exhibits a significantly red-shifted absorption edge extending to about 600 nm in the visible region, corresponding to a narrowed bandgap of 2.27 eV. By loading spatially separated 1 wt % Pd and 0.5 wt % CoO x dual cocatalysts via photodeposition, the optimized catalyst achieves efficient photocatalytic H 2 O 2 synthesis from O 2 and H 2 O in phosphate buffer solution (pH = 6). Under broad-spectrum visible light, including monochromatic irradiation near 600 nm, the catalyst shows excellent H 2 O 2 production activity (∼90 μM/h) and maintains good stability in cycling tests. In situ ATR-FTIR and open-circuit voltage decay (OCVD) analyses further reveal its effective charge carrier separation and O 2 activation pathway. This study offers a design strategy for developing inorganic photocatalysts with broad visible-light response and high stability.
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MOLECULES
·
2026
·Vol. 31
·期 8
·1361
·
IF 5.1
Weili Yu,Yan Tian,Mengyu Guo,Shuping Tong,Chengshuai Li,Bingjie Zhang,Yongqiang Ma
Imidazolinone herbicides such as imazethapyr (IMT) pose potential ecological risks due to their high mobility and ecotoxicity. This study synthesized the bismuth-based photocatalyst BiOIO3via a facile hydrothermal method and systematically characterized its physicochemical properties. BiOIO3features a 2D lamellar structure, pure phase composition, and a built-in internal polarization electric field that efficiently separates photogenerated electron–hole pairs. Photocatalytic experiments exhibited that BiOIO3achieved 84.5% elimination of IMT, with a rate constant 66 times higher than that of TiO2(Rutile). Mechanistic studies revealed that photogenerated electrons (e−), holes (h+), and superoxide radicals (·O2−) are the primary reactive species. HPLC-MS/MS identified key intermediates, and QSAR-based toxicity prediction showed reduced mutagenicity for most intermediates. Importantly, BiOIO3effectively eliminated five imidazolinone herbicides simultaneously. This work highlights BiOIO3as a promising photocatalyst for efficient and practical remediation of imidazolinone herbicide-contaminated water.
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Shufang Chang,Li Shi,Jinxing Yu,Ran Wang,Xiaoxiang Xu,Gang Liu
We have identified a facet-assisted mechanism for photocarrier separation in flux-treated Bi 4 TaO 8 Cl crystals that expose mainly {001} and {110} facets. These two crystal facets have different energy states that provide an internal electric field to split photocarriers towards different crystal facets. We have further leveraged the phenomenon by facet-selective deposition of CoO x cocatalyst at {001} crystal facets where holes are accumulated to expedite interfacial charge transfer reactions. The coupling of these two facet-engineering techniques brings exquisite control over the flow of photocarriers which cascade continuously from bulk to the surface for catalytic reactions . Under optimal conditions, the CoO x -deposited Bi 4 TaO 8 Cl achieves an unprecedentedly high apparent quantum efficiency of 27% at 420 ± 20 nm for water oxidation into O 2 . Stable overall water splitting into H 2 and O 2 (molar ratio 2:1) under visible light irradiation has also been realized in a Z-scheme system employing the CoO x -deposited Bi 4 TaO 8 Cl as the O 2 -evolution moiety.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Anjli Sharma,Sanjeev Kumar Kanth,Shishi Xu,Ni Han,Lei Zhu,Lele Fan,Chao Liu,Qinfang Zhang
A highly potential visible light active g-C 3 N 4 /Bi 4 NbO 8 X (Cl, Br) heterojunction photocatalysts were constructed at the interface of the coupling between Bi 4 NbO 8 X (Cl, Br) and g-C 3 N 4 . The band gap value of heterojunctions g-C 3 N 4 /Bi 4 NbO 8 Br-20% (CNBNB-3), g-C 3 N 4 /Bi 4 NbO 8 Cl-20% (CNBNC-3), and pristine materials g-C 3 N 4 (CN), Bi 4 NbO 8 Cl and Bi 4 NbO 8 Br were analyzed to be 2.68 eV, 2.69 eV and 2.74 eV, 2.46 eV and 2.48 eV, respectively. The degradation performance of optimized CNBNC-3 and CNBNB-3 photocatalysts revealed much superior removal efficiency of 97% and 84% than the pristine material for rhodamine B. The synthesized photocatalysts maintained good recyclable stability after five consecutive cycles and potentially capable of pollutant degradation. The electrochemical impedance and photoluminescence spectroscopy revealed that the migration and separation efficiency of photogenerated charge carriers of photocatalyst were boosted, while reduced recombination rate was observed. The photocatalytic reaction mechanism also revealed the superoxide ·O 2 − and • OH radicals are the main active species responsible for the pollutant degradation.
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MOLECULES
·
2023
·Vol. 28
·期 19
·6949
·
IF 4.6
Heng Guo,Yangzhou Deng,Haoyong Yin,Juanjuan Liu,Shihui Zou
Fabricating heterostructures with abundant interfaces and delicate nanoarchitectures is an attractive approach for optimizing photocatalysts. Herein, we report the facile synthesis of BiOCl nanoflake/FeOCl nanospindle heterostructures through a solution chemistry method at room temperature. Characterizations, including XRD, SEM, TEM, EDS, and XPS, were employed to investigate the synthesized materials. The results demonstrate that the in situ reaction between the Bi precursors and the surface Cl−of FeOCl enabled the bounded nucleation and growth of BiOCl on the surface of FeOCl nanospindles. Stable interfacial structures were established between BiOCl nanoflakes and FeOCl nanospindles using Cl−as the bridge. Regulating the Bi-to-Fe ratios allowed for the optimization of the BiOCl/FeOCl interface, thereby facilitating the separation of photogenerated carriers and accelerating the photocatalytic degradation of RhB. The BiOCl/FeOCl heterostructures with an optimal composition of 15% BiOCl exhibited ~90 times higher visible-light photocatalytic activity than FeOCl. Based on an analysis of the band structures and reactive oxygen species, we propose an S-scheme mechanism to elucidate the significantly enhanced photocatalytic performance observed in the BiOCl/FeOCl heterostructures.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2021
·
IF 7.46
Jia Ding,Fei Liu,Chunling Qi,Yunlei Zhou,Huanshun Yin,Shiyun Ai
A novel photoelectrochemical (PEC) biosensor was constructed for DNA hydroxymethylation detection based on Bi 4 NbO 8 Cl/PTC-NH 2 heterojunction and Fe-MIL-88NH 2 , where Bi 4 NbO 8 Cl/PTC-NH 2 was employed as photoactive material and Fe-MIL-88NH 2 was adopted as artificial hydrogen peroxide mimic enzyme. Based on the structure of hydroxymethylated cytosine in DNA sequence, 5-hydroxymethyl-2’-deoxycytidine (5hmdC) was employed as detected target molecule for the first time using PEC technique. After Bi 4 NbO 8 Cl/PTC-NH 2 heterojunction was modified on the substrate electrode, thioglycolic acid (TGA) was captured by forming amide bond, where the sulfhydryl group (-SH) of TGA was employed as the specific recognition of 5hmdC. Under M. HhaI catalysis, the −CH 2 OH of 5hmdC reacted selectively with the –SH. Finally, Fe-MIL-88NH 2 was modified on the electrode based on the crosslinker of 4-formylphenylboronic acid (FPBA), where FPBA possessed two active groups of formyl and boronic acid group, reacting with glycosyl of 5hmdC and amino of Fe-MIL-88NH 2 . Under the catalysis effect of Fe-MIL-88NH 2 , the insoluble substance was produced on the surface of electrodes, resulting in distinct lessening of PEC response. Under optimal conditions, the photocurrent shows a linear relationship with the logarithm value of 5hmdC concentration from 0.01-100 nM with a low detection limit of 6.48 pM. More importantly, this method can be applied to investigate the influence of exogenous phytohormone on 5hmdC content in the genomic DNA of rice seedling roots and leaves.
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ACS Nano
·
2021
·
IF 15.881
Shufang Chang,Jinxing Yu,Ran Wang,Qingyang Fu,Xiaoxiang Xu
LaTaON2 porous single crystals (PSCs), integrating structural coherence and porous microstructures, will warrant promising photocatalytic performance. The absence of grain boundaries in PSCs ensures rapid photocarrier transportation from bulk to the surface, thereby mitigating photocarriers’ recombination. Porous microstructures not only provide ample reachable surface to host photochemical reactions but also reinforce photon-matter interactions by additional photon reflection/scattering. Here, we have synthesized LaTaON2 PSCs via a topotactic route and show significantly improved photocatalytic performance. Efficient water oxidation into O2 has been realized by LaTaON2 PSCs with an apparent quantum efficiency as high as 5.7% at 420 ± 20 nm. Stable overall water splitting into stoichiometric H2 and O2 has also been achieved in a Z-scheme setup using LaTaON2 PSCs as the O2 evolution photocatalyst. These results not only prove that PSCs facilitate photocarrier migrations, which in turn deliver exceptional photocatalytic performance, but also imply that PSCs are useful to reinvigorate conventional semiconductor photocatalysts toward efficient solar energy conversions.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Yixue Xu,Xiaoli Jin,Teng Ge,Haiquan Xie,Ruixue Sun,Fengyun Su,Xin Li,Liqun Ye
The van der Waals (vdW) heterojunction formed between two-dimensional materials can break the anisotropy of the electron beam and is an effective method to improve the photocatalytic performance. Herein, vdW heterostructure is successfully constructed between layered Bi 3 O 4 Cl and 2D g-C 3 N 4 for photocatalytic CO 2 reduction. The weak vdW interaction enables Bi 3 O 4 Cl/g-C 3 N 4 with desirable moderate bandgap and built-in electronic field, which can efficiently separate the electron-hole pairs. As a result, Bi 3 O 4 Cl/g-C 3 N 4 heterostructures exhibit better photocatalytic CO 2 reduction activity compared with pure Bi 3 O 4 Cl and g-C 3 N 4 . The optimized Bi 3 O 4 Cl/20%g-C 3 N 4 possesses the highest CO 2 conversion efficiency with CO and CH 4 generation rate of 6.6 and 1.9 μmol g −1 h −1 , respectively. This work not only reports an effective reference for vdW heterojunction system based on Bi-based and g-C 3 N 4 semiconductors, but also contributes to engineering vdW heterojunctions for satisfactory solar energy conversion performance.
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高影响因子
BIOSENSORS & BIOELECTRONICS
·
2021
·
IF 10.618
Jia Ding,Yunlei Zhou,Qian Wang,Shiyun Ai
As an important epigenetic modification , 5-hydroxymethylcytosine (5hmC) aroused wide concern about the distribution and the function. Due to the necessity of 5hmC detection, a novel photoelectrochemical (PEC) biosensor was established based on the in-situ generated heterojunction of Bi 4 NbO 8 [email protected] 2 S 3 , which was employed as the substrate material with excellent photoelectric property . The specific recognition of 5hmC relied on the covalent reaction between –CH 2 OH of 5hmC and –SH on the substrate electrode under the catalysis of M.HhaI methyltransferase . Afterwards, ZrO 2 was used as signal amplification unit capturing by the specific reaction of Zr with the phosphate group of 5hmC. The experimental results demonstrated well specificity and sensitivity of this biosensor. Under optimal conditions, the linear relationship between the photocurrent and the logarithm value of 5hmC concentration was constructed with the range from 0.3 to 300 nM and the detection limit of 0.0779 nM (S/N = 3). The procedures of constructing this biosensor were compact and convenient, and this biosensor realized actual detection of 5hmC level in wheat sample. Significantly, this biosensor was applied to a preliminary study that the heavy metal Pb 2+ and the perfluorooctanoic acid influence the expression of 5hmC in the genomic DNA of wheat seedling roots and leaves.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2014
·Vol. 39
·期 2
·1274-1280
·
IF 3.159
Fan Tian,Yafang Zhang,Guangfang Li,Yunling Liu,Rong Chen
Bismuth oxychloride (BiOCl) nanosheets with tunable thickness were synthesized via a facile solvothermal method. The obtained BiOCl products were characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and nitrogen adsorption. It was found that the metal ions (Fe3+, Co2+ and Na+) played a significant role in modulating the thickness of two-dimensional (2D) BiOCl nanostructures. Compared with commercial P25 and commercial BiOCl, the as-prepared BiOCl nanosheets exhibited superior activity for photosensitization degradation of organic dyes upon visible light irradiation. Furthermore, the photosensitization degradation activities were strongly correlated with the thickness of BiOCl nanosheets. The thinner nanosheets demonstrated a relatively high activity for the degradation of Rhodamine B (RhB). The enhanced photosensitization activities were ascribed to its low electron injection barrier and high electron mobility on the surface of BiOCl nanosheets, which was confirmed by transient photocurrent responses and electron impedance spectra of the samples.
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TALANTA
·
2024
·
IF 5.6
Haoran Cheng,Yifan Wang,Yirui Zhao,Hongman Hou,Gongliang Zhang,Jingran Bi,Shuang Yan,Hongshun Hao
Salmonella enteritidis ( SE ) is a food-borne pathogens that can cause acute gastroenteritis. With the increasing social attention to food safety, the detection method of SE has attracted wide attention. In response to the demand for efficient detection methods of SE , this study constructed a novel dual-mode photoelectrochemical-electrochemical (PEC-EC) aptamer-based biosensor. The sensor was constructed using Bi 4 NbO 8 Cl/In 2 S 3 heterojunction as the electrode substrate material, the hybridization chain reaction (HCR) and dye sensitization were used as the signal amplification strategies. Bi 4 NbO 8 Cl/In 2 S 3 heterojunction could provide an excellent initial photocurrent response for the sensing platform, and the HCR was opened by the end of complementary DNA (cDNA) and generated an ultra-long DNA double-stranded (dsDNA) “super structure” on the surface of the electrode, which could be embedded with a large number of methylene blue (MB) as the bifunctional probes. Thus, dual-mode output was achieved via the PEC and EC activity of MB. Under the optimized conditions, the PEC and EC signal responses of the system were linear to the logarithm of SE concentration in a range from 1.5 × 10 2 CFU/mL to 1.5 × 10 7 CFU/mL. The detection limits were found to be 12.9 CFU/mL and 12.3 CFU/mL using the PEC and EC methods, respectively. The constructed dual-mode biosensor exhibited good performance for real sample analysis, and demonstrated great application potential in the field of SE rapid detection. Moreover, this dual-mode detection strategy provided more accurate and reliable results than the single-mode output.
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高影响因子
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