CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Nian Liu,Jingcun Shao,Jiahan Zhu,Wenhui Fan,Yi Zhao,Zheng Li,Hezheng Sun,Yajie Tian,Xin Yu
Zirconium dioxide (ZrO 2 ) is extensively investigated for the remediation of antibiotic pollution in aquatic environments, owing to its environmental compatibility and favorable electronic structure. However, its ultrawide band gap energy severely restricts visible-light harvesting and visible-light photocatalysis. To overcome these limitations, visible-light-active Zn/Zr 3+ -ZrO 2 and AgI@Zn/Zr 3+ -ZrO 2 nanostructures were synthesized through a calcination-chemical deposition strategy for levofloxacin degradation. The obtained AgI@Zn/Zr 3+ -ZrO 2 composites demonstrated a high specific surface area of approximately 100.65 m 2 g −1 and enhanced visible-light absorption, featuring a red-shifted absorption edge extending to approximately 460 nm. The AgI@Zn/Zr 3+ -ZrO 2 -30% heterojunction exhibited the highest photocatalytic levofloxacin degradation efficiency under visible-light irradiation, achieving a remarkable 80.51% degradation within 18 min. The apparent rate constant was 0.10042 min −1 , which was 5.66 times and 31.28 times of AgI (0.01772 min −1 ) and Zn/Zr 3+ -ZrO 2 (0.00321 min −1 ), respectively. Additionally, the AgI@Zn/Zr 3+ -ZrO 2 composites demonstrated remarkable cycling stability for levofloxacin degradation, retaining 94.67% of the initial performance after three reuse cycles. Crucially, Zr 3+ doping and Step-scheme (S-scheme) heterostructure synergistically enhances interfacial charge dynamics and chemical stability of the AgI@Zn/Zr 3+ -ZrO 2 composites, offering a viable design strategy for high-performance photocatalysis.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Bolong Liang,Hongbin He,Xi Zhu,Shu-Xuan Liang
The residue of oxytetracycline hydrochloride (OTC) has emerged as a significant concern impacting both human health and the ecological environment. Photocatalysis has a good application prospect in the treatment of antibiotic pollution due to its advantages of lost cost, high efficiency and environmental friendliness, and the development of photocatalyst has become crucial for achieving effective photocatalytic degradation. The preparation of Z-scheme heterojunction is regarded as an effective strategy to enhance photocatalytic activity. Herein, double Z-scheme MIL-101(Fe)@AgI@TPA/TPB heterojunction materials were innovatively designed and successfully prepared. MIL-101(Fe)@AgI@TPA/TPB could achieve 95.09 % OTC removal efficiency under visible light irradiation in 70 min. The investigation of photoelectric properties and mechanisms revealed that MIL-101(Fe)@AgI@TPA/TPB had a broader range and enhanced ability for light absorption, along with a narrower band gap. It was determined that ·O 2 - and ·OH were the primary active species involved in the photocatalysis process. The mechanism of double Z-scheme heterojunction capable of facilitating efficient photocatalytic degradation was proposed, and the intermediate products and decomposition pathways of OTC in the photocatalytic degradation process were analyzed. This study provides innovative insights into practical application through the prepared double Z-scheme heterojunction photocatalyst aimed at remediating OTC contamination in water environments.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2019
·
IF 5.589
Jing Wang,Tianli Yang,Ren He,Kehui Xue,Renrui Sun,Wenlei Wang,Juntao Wang,Ting Yang,Yuanlan Wang
Ternary heterostructure nanotubes of In 2 S 3 -CdIn 2 S 4 @X(X = Ag, Ag 3 PO 4 , AgI) were synthesized with enhanced photocatalytic activity for efficiently degrading pollutants. Electron beam irradiation was employed to artificially introduce interface defects to the heterostructure nanotubes. The experimental results for degrading carmine and Cr 6+ under visible light irradiation showed that the photocatalytic efficiency of In 2 S 3 -CdIn 2 S 4 was improved to some extent by the introduction of silver compounds. DRS results confirmed that the band gaps of In 2 S 3 -CdIn 2 S 4 were reduced to 1.62 eV and 1.58 eV by introducing Ag 3 PO 4 and AgI, respectively. Interestingly, the band gap of In 2 S 3 -CdIn 2 S 4 @AgI after electron beam irradiation was further reduced to 1.56 eV, resulting in that the degradation time of both Cr 6+ and carmine by In 2 S 3 -CdIn 2 S 4 @AgI after high-energy electron beam irradiation was shortened to only 5 min. The XRD spectra of the photocatalysts after five cycles could maintain the original crystal form to a large extent. The O H stretching vibration peaks of In 2 S 3 -CdIn 2 S 4 @AgI after electron beam irradiation at 3387 cm −1 became wider and sharper, thus indicating that the number of free hydroxyl groups on the heterostructure surface significantly increased. PL results showed that electron beam irradiation could significantly reduce the PL emission peak and enhance the utilization of photogenerated charge carriers. EIS results further confirmed that In 2 S 3 -CdIn 2 S 4 @AgI processed by electron beam irradiation had higher photogenerated electron-hole separation efficiency. Based on the experimental results, a feasible reaction pathway and photocatalytic mechanism for the degradation of carmine was investigated. ESR results showed that the main active groups in the whole photocatalytic system were •O 2 – and h + .
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2021
·
IF 10.618
Keqin Deng,Jing Xiao,Zhang Liu,Chunxiang Li,Jinglun Wang,Qingfeng Yi,Haowen Huang,Hu Zhou
ABSTRCT Photocathode-based assay is anti-interference for real sample detection . Photocathode produces low photocurrent signal and gives rise to poor sensitivity. Herein, a novel cathode photoelectrochemical (CPEC) sensing platform based on Ag-AgI-CNTs as photocathode material and K 3 [Fe(CN) 6 ] as photoelectron acceptor was established. Since [Fe(CN) 6 ] 3- effectively accepted photoelectrons from Ag-AgI-CNTs, it greatly enhanced the CPEC response. Combining a surface multisite strand displacement amplification (SMSDA) strategy, the CPEC platform was applied for the activity assay of terminal deoxynucleotidyl transferase (TdT). In this proposal, oligo dT primer tethered on CPEC platform was in-situ extended to generate a polyA tail. Then the polyA tail formed a stable multi-point hybrid structure with the adjacent oligo dT. After launching the SMSDA, the CPEC platform was covered by more elongated polynucleotide chains and network, which acutely hampered the photoelectron transfer (eT) between photocathode and electron acceptor and caused a reduced photocurrent. The CPEC sensor possessed a satisfactory linear response from 6 × 10 -5 -0.1 U and a low detection limit of 1.1 × 10 -5 U. The strategy offered a more specific and sensitive method for TdT activity assay . It was feasible in the field of TdT-based biochemical research, drug screening, and disease diagnosis.
研究领域:
生物化学
·
分析化学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2022
·
IF 5.141
Qianshu Xia,Yun Hao,Suimin Deng,Lina Yang,Ruoxin Wang,Xiangfeng Wang,Yuan Liu,Hailing Liu,Mengxia Xie
s Water pollution induced by the productive process of organic dyes would lead to various diseases, and so treatment of the wastewater is an urgent task for protecting human health and ecological environment. In this work, visible light responsive heterojunction material based on silver iodide and carbon dots (CDs) doped ZIF-8 metal organic frameworks ( [email protected] @AgI) has been prepared by a green solvent-free strategy and in-situ ion deposition method. The [email protected] @AgI composites have high photocatalytic performance for degradation of acridine orange (AO) dye under visible light, and the maximum degradation percentage can reach to 96.0%, which was estimated by the UV–visible spectroscopy. The porous structure and large surface area of the photocatalyst were favorable to absorption of the target dye on the catalyst, which can promote the kinetic degradation rate for low level concentration of the dye. The introduction of CDs into the AgI heterojunction can improve the electron transport efficiency and visible light absorption capacity, and thus significantly enhancing the photocatalytic activity of the catalyst. The photocatalytic mechanism was proposed as indirect Z-scheme heterojunction type based on the energy band structure of the catalyst. This work provides a visible light photocatalyst for removal of the AO dye in wastewater and offers a promising strategy for developing photocatalyst for treatment of organic pollutants in the environment using solar energy.
研究领域:
环境科学
·
材料科学
·
化学工程
·
光化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Boran Xu,Yandong Li,Yangqin Gao,Shuang Liu,Da Lv,Sujun Zhao,Hang Gao,Guoqing Yang,Ning Li,Lei Ge
A novel plasmonic photocatalysts of Ag-AgI/Bi 3 O 4 Cl was successfully synthesized via a simple and mild wet-chemical process. The 30 wt% Ag-AgI/Bi 3 O 4 Cl photocatalyst showed the highest photocatalytic activity for degradation of methyl orange (MO) under visible light (5 W LED lamp), which represents a 3.2 and 7.4 times enhancement in the photocatalytic degradation efficiency as compared to pure Bi 3 O 4 Cl and Ag-AgI, respectively. The surface plasmon resonance (SPR) effect of Ag nanoparticles (NPs) was detected by the UV–vis diffusion reflectance spectroscopy (DRS) and surface photovoltage (SPV) measurement, finding that the SPR effect of Ag extends the absorption and photo-response range in the Ag-AgI/Bi 3 O 4 Cl composite photocatalyst. Based on the analysis of electron spin resonance (ESR), linear sweeping voltammetry (LSV) characterization results, three electron transfer processes were proposed: AgI CB → Bi 3 O 4 Cl CB , AgI CB → Ag and methyl orange → Ag. Such electron transfer paths can not only effectively improve the separation efficiency of photo-generated carriers, but also ensure the stability of the catalyst. This study can provide a novel insight for modification of other desirable semiconductor materials to achieve high photocatalytic activity.
研究领域:
材料科学
·
环境化学
·
物理化学
·
纳米催化
·
半导体光催化
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2023
·
IF 3.9
Yuwei Sun,Xin Qi,Chou Chen,Wenyu Liu,Qian Tang,Honghui Teng,Baixiang Ren
In this work, AgI nanoparticles were anchored on decahedron-like MIL-125(Ti) through wet precipitation method, and the photocatalytic activities were analyzed by tetracycline (TC) degradation rates under simulated sunlight. The structures, morphologies, valence bonds, optical absorption properties, charge separation efficiencies of the prepared samples were tested by XRD , SEM, EDS , XPS, UV–Vis DRS and PL spectroscopy. Compared with pure MIL-125(Ti), AgI@MIL-125(Ti) displayed excellent photocatalytic performance on TC degradation. When the mass fraction of AgI in AgI@MIL-125(Ti) was 10 %, AgI@MIL-125(Ti)-10 % displayed the best photocatalytic efficiency, which 96.9 % of TC was removed under simulated sunlight for 30 min. The results of active species trapping experiments and ESR tests showed that the Z-Scheme heterojunction between AgI and MIL-125(Ti) promoted the separation of photogenerated charges. Furthermore, a part of Ag + were reduced to Ag NPs in the process of photocatalytic reaction, which constructed a cross-linking bridge for the charges at the interface of AgI and MIL-125(Ti) and further accelerated the electron transmission. The intermediate toxicity experiments proved that the toxic structures are destroyed in TC solution after MIL-125(Ti)-10 % photocatalytic degradation, and the toxicity of the reaction system was reduced effectively.
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Ahsan Nazir,Ameena Tur Rasool,Chuntao Chen,Otabek Mukhitdinov,Doniyor Jumanazarov,Dongping Sun
In this study, novel Z-scheme AgI@PbBiO 2 Br heterojunctions were prepared using a simple in situ precipitation approach to effectively degrade organic pollutants and inactivate gram-negative Escherichia coli (E. coli) and gram-positive Staphylococcus aureus (S. aureus) bacteria when exposed to visible light. The prepared materials were comprehensively evaluated using several analytical procedures. The 20 %-AgI@PbBiO 2 Br presented the best photocatalytic performance of all the catalysts prepared. The rhodamine B (RhB) molecules were significantly reduced within 70 min (98.72 %), showing a much higher degradation efficiency than bare AgI (73.58 %) and PbBiO 2 Br (46.77 %) under the same conditions. The degradation of methyl orange (MO), neutral red (NR), and tetracycline (TC) by 20 %-AgI@PbBiO 2 Br was also examined, resulting in nearly total elimination of MO, NR, and TC pollutants, respectively. In addition, the antibacterial efficacy of 20 %-AgI@PbBiO 2 Br against E. coli and S. aureus reaches about 99.99 %. The improved photodegradation efficacy of AgI@PbBiO 2 Br is owing to the construction of a heterojunction between AgI and PbBiO 2 Br, which increases effective charge separation and visible light absorption, thus enabling the decomposition of pollutants. Cycling experiments confirmed the stability and reusability of the material, demonstrating exceptional photocatalytic durability. The photocatalytic mechanism was thoroughly examined by reactive species capture assays and ESR analysis, confirming that holes and superoxide radicals are crucial in the photodegradation system. Additionally, the density functional theory (DFT) simulations and liquid chromatography-mass spectrometry (LC-MS) helped to clarify the susceptible active sites and possible degradation pathways of RhB. Overall, this work underlines the considerable ability of AgI@PbBiO 2 Br heterojunctions to effectively remove persistent pollutants from wastewater.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2020
·
IF 7.1
Huizhu Ren,Qing Han,Shupei Zhang,Yitian Huang,Yanjie Chen,Hong Dai,Jianying Yan,Yanyu Lin
Herein, a photothermal in-situ amplified electrochemical immunoassay based on multifunctional probe for detecting autoimmune hepatitis marker was constructed. The immunoassay followed a sandwich protocol, helical carbon nanotubes (HCNTs) and polyaniline (PANI) composite provided a desirable substrate for the immobilization of massive primary antibody (Ab 1 ). Subsequently, the multifunctional probe, by utilizing Chitosan (CS) modified AgI nanohybrids (AgI NHs) labeled secondary antibody (Ab 2 ), were simply designed for the first time. To be specific, AgI NHs were not only directly served as signal readout, but also as amplifier further enhanced electrochemical signal. Under the near-infrared (NIR) laser irradiation, electrochemical reaction was significantly accelerated on electrode in situ due to the extraordinary photothermal conversion capability of AgI NHs. Therefore, the evidently improved sensitivity together with enhanced signal-to-noise ratio of immunoassay was achieved in the short time by precise-controlling of NIR laser irradiation. Under the optimal conditions, the developed electrochemical immunoassay realized sensitive and specific detection of autoimmune hepatitis marker from 10 −4 ng/mL to 1 ng/mL with low detection limit of 3.3 × 10 -5 ng/mL. Importantly, this work provided a promising prospect for the application of photothermal effect coupled with electrochemical immunoassay and opened up a new pathway for signal amplification.
研究领域:
分析化学
·
生物化学
·
纳米技术
·
免疫学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Yi Wang,Xinyan Xiao,Tingting Ding,Mingli Lu
The transition-metal dichalcogenides (TMDs) with 1T phase structure holds great promise for providing abundant active sites and superior conductivity, while the achievement of highly efficient degradation activity over bare TMDs and TMDs-based photocatalysts is still challenges. In this work, a flower-like mixed 1T-2H phase MoSe 2 was synthesized via a sodium borohydride (NaBH 4 )-assisted solvothermal method, and then was selected as a “charge-transfer-bridge” to fabricate a dual Z-scheme AgI/1T-2H MoSe 2 /Bi 4 O 5 Br 2 composite with a 0D/3D hierarchical structure. The optimal AgI/1T-2H MoSe 2 /Bi 4 O 5 Br 2 composite exhibited the superior photocatalytic activity towards degrading RhB and TC relative to AgI/2H MoSe 2 /Bi 4 O 5 Br 2 and AgI/Bi 4 O 5 Br 2 . The enhancement is attributed to its better light absorption, abundant active sites, and superior charge carrier mobility and separation efficiency, resulted from synergetic effect of 0D/3D structural coupling and energy band matching. Moreover, the important energy band alignments and mixed 1T-2H phase MoSe 2 boosting photocatalytic mechanism of as-prepared AgI/1T-2H MoSe 2 /Bi 4 O 5 Br 2 heterojunction were investigated. This work describes a competitive design and fabrication technique for constructing novel mixed phase TMDs-based Z-scheme heterojunctions to address environmental issues.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Hao Huang,Hui-Long Wang,Shao-Bo Shi,Wen-Feng Jiang
The degree of molybdate polymerization significantly affects the photocatalytic properties of molybdate-based photocatalysts. However, few studies have focused on this aspect. Herein, novel AgI/Ag n Mo x O 3x+n/2 /g-C 3 N 4 ternary composites were constructed via a facile two-step in - situ synthesis approach. Photocatalytic activity of AgI/Ag n Mo x O 3x+n/2 /g-C 3 N 4 was tested for the degradation of benzotriazole (BTA) in aqueous solution. We illustrated the intrinsic dependence of the band structure, dual built-in electric field, charge transfer mechanism and photocatalytic activity of AgI/Ag n Mo x O 3x+n/2 /g-C 3 N 4 on the degree of molybdate polymerization. Tuning the polymerization degree of molybdate constituent in AgI/Ag n Mo x O 3x+n/2 /g-C 3 N 4 can produce more advantageous band structures and dual built-in electric fields with different directions at the intimate contact interface. The charge transfer mechanism of undergoes a transition from dual type-II to a hybrid of type-II and Z-scheme and then to dual direct Z-scheme with the increase of the degree of molybdate polymerization, which can simultaneously enhance the photocatalytic activity and photostability of the AgI/Ag n Mo x O 3x+n/2 /g-C 3 N 4 ternary heterojunction photocatalysts, achieving the effect of killing two birds with one stone. It was confirmed that AgI/Ag n Mo x O 3x+n/2 /g-C 3 N 4 can be activated by visible light and employed as effective photocatalyst in photocatalytic degradation of BTA.
研究领域:
材料科学
·
环境科学
✓ 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）