APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Lingtun Hao,Maofeng Ding,Song Song,Yong You,Xingang Li
Photocatalytic amino acid synthesis from biomass is a promising and renewable method, yet the synthesis efficiency remains suboptimal. Here, we report a novel strategy for synthesizing 2D/2D CdS/1T-MoS 2 heterojunctions by leveraging 1T-phase MoS 2 with distorted octahedral coordination and sulfur-rich edges to promote the formation of large contact areas and abundant interfacial sulfur vacancies in combination with CdS. CdS/1T-MoS 2 displays exceptional photocatalytic performance for amination of biomass-derived α-hydroxy acids to α-amino acids, achieving an alanine formation rate of 23.3 mmol·g -1 ·h -1 from lactic acid, which is 4.4 and 1.6 times higher than those of CdS and CdS/2H-MoS 2 , respectively. Detailed characterizations reveal that CdS/1T-MoS 2 possesses abundant interfacial sulfur vacancies at the 2D/2D heterojunction interface compared to CdS and CdS/2H-MoS 2 . These vacancies create numerous Lewis acids sites, significantly enhancing the adsorption and activation of hydroxyl groups in lactic acid, thereby promoting the dehydrogenation step. Moreover, CdS/1T-MoS 2 facilitates the condensation of pyruvic acid with ammonia and promotes the desorption of alanine from the catalyst surface, effectively improving the reductive amination step. Additionally, CdS/1T-MoS 2 exhibits superior charge carrier separation and migration efficiency, further boosting its photocatalytic amination activity. This study provides a novel strategy for synthesizing 2D/2D heterojunctions with abundant interfacial vacancies for efficient photocatalytic biomass valorization.
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高影响因子
APPLIED SURFACE SCIENCE
·
2016
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IF 3.15
Shuo Li,Dedong Meng,Libo Hou,Dejun Wang,Tengfeng Xie
Cationic surfactant (CTAB) and anionic surfactant (sodium oleate) were used to modify CdS nanocrystals with different surface states. The surfactant CTAB led to surface states of hole traps, while sodium oleate induced surface states of electron traps on the surface of CdS. The photodegradation of rhodamine B (RhB) over these modified CdS nanocrystals was investigated under visible light irradiation. An efficient cycloreversion degradation of RhB occurred over the E-CdS nanocrystals. However, for H-CdS nanocrystals, an efficient N-deethylation reaction concomitant with a subsequent slow cycloreversion reaction of RhB was observed. The E-CdS sample showed a first-order kinetic rate for the cycloreversion degradation of RhB. By contrast, H-CdS sample shows a zero-order kinetic rate for the N-deethylation reaction of RhB followed by a first-order kinetic rate for the cycloreversion degradation. It is revealed that the different kinds of surface traps could significantly affect the dynamic properties of photogenerated charge carriers, which leads to different degradation mechanism of RhB. These findings demonstrate an alternative solution towards developing efficient photocatalysts with high selectivity by constructing different surface trap states.
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高影响因子
ANALYTICAL CHEMISTRY
·
2026
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IF 7.3
Qianqian Jiang,Renlong Chen,Tong Zhang,Hao Shen,Cheng Zhang,Kui Zhang,Zhongping Zhang
Lateral flow immunochromatographic assay (LFIA) features advantages such as a rapid analysis process, interpretable detection results, and low cost, making it an effective method for on-site detection of pesticides. However, the existing LFIA technologies still face bottleneck issues, including strong background fluorescence interference from the substrate and insufficient detection sensitivity for low pesticide residue levels. Here, long-lived room-temperature phosphorescent carbon dots embedded in silica (CDs@SiO2) were developed to overcome background fluorescence interference. Fe3O4 coated with dopamine (Fe3O4@PDA) was utilized for the enrichment of target pesticide molecules. Meanwhile, by virtue of the quenching effect of Fe3O4@PDA on CDs@SiO2, colorimetric and phosphorescent dual-mode LFIA technology was designed for the detection of the pesticide acetamiprid. Through the integration of the advantages of CDs@SiO2 and Fe3O4@PDA, the limit of detection (LOD) for acetamiprid was as low as 0.271 ng/mL, and satisfactory recoveries were achieved in real samples. This research breaks through the millisecond-level lifetime limitation in traditional time-resolved fluorescence immunoassays, providing novel insight for the development of labeling materials for LFIA.
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PubMed
高影响因子
DESALINATION
·
2026
·
IF 9.9
Yufan Zhao,Yu Wang,Hong Cao,Peng Wu,Yuchen Zhang,Cong Yin,Ning Liu,Yuanyou Yang,Tu Lan
A novel direct Z -scheme heterojunction of 0.25-pCOF/CdS with rich S-vacancy defects was successfully fabricated. • 0.25-pCOF/CdS enabled efficient photocatalytic extraction of U(VI) under air without sacrificial agents. • 0.25-pCOF/CdS showed a consistent photocatalytic extraction ratio of over 98% for U(VI) in a range of 5–100 mg/L. • 0.25-pCOF/CdS achieved an ultrahigh extraction ratio of 99.68% for U(VI) when treating real uranium mine wastewater. • The dual strategy of combining S-vacancy defects and heterojunction engineering effectively enhanced charge separation. Photocatalysis is considered as an attractive approach for treating uranium-containing wastewater. Herein, through in-situ growth of a porphyrin covalent organic framework (pCOF) on CdS nanospheres, a novel direct Z -scheme heterojunction of 0.25-pCOF/CdS with rich S-vacancy defects was successfully prepared for visible-light-driven photocatalytic extraction of U(VI) under an aerobic atmosphere without hole scavengers. The optimized 0.25-pCOF/CdS exhibited a consistent photocatalytic extraction ratio of over 98% for U(VI) in a wide range of 5 to 100 mg/L, with excellent anti-interference ability. Notably, 0.25-pCOF/CdS achieved an ultrahigh extraction ratio of 99.68% for U(VI) when treating real uranium-containing wastewater, accompanied by the substantial removal of Fe 3+ , which contributed to the deep purification of wastewater. The reduced uranium mainly accumulated on the CdS surface as U 3 O 8 , while the ·O 2 − and e − were identified as the dominant active species for U(VI) photocatalytic extraction. The dual strategy reported here combines vacancy defects and heterojunction engineering, effectively enhancing charge separation and accelerating directional charge transfer, thereby improving U(VI) photocatalytic extraction performance, and offers a feasible guideline for designing efficient photocatalysts for uranium extraction from radioactive wastewater. Download: Download high-res image (347KB) Download: Download full-size image
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·122081
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IF 7.5
Yongming Zhong,Yangting Liao,Rongni Dou,Xiaolong Yu,Jin Tang,Hang Liu,Dan Liu,Yuming Fang,Yilun Luo,Jianteng Sun
The synthesis of novel film-like photocatalysts is an effective strategy for reducing Cr(VI). Herein, a Z-scheme ZnIn 2 S 4 –CdS heterojunction photocatalyst was fabricated on a self-assembled graphene-based substrate via hydrothermal and solvothermal methods. By controlling the ethanol:water ratio during solvothermal synthesis, differently sized CdS nanoparticles were grown on the ZnIn 2 S 4 nanosheets surface for regulating the photocatalytic activity of ZnIn 2 S 4 –CdS heterojunction. The three-dimensional layered structure of the graphene film provided abundant active sites for material loading and its excellent conductivity rapidly transferred photogenerated electrons. Compared to the ZnIn 2 S 4 –CdS heterojunction samples with other controlled structure, graphene-based film-like photocatalyst bring advantage in enrich photocatalysts for bursting out better activity. Under visible light irradiation, the synthesized RZC-40 sample exhibited a photocatalytic efficiency of 91.02% in photoreducing 20 mg L −1 Cr(VI) within 50 min, highlighting the feasibility and promising practical application prospects of synergistic film-like photocatalysts and laying a theoretical foundation for the further development of photocatalysts with improved activity.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Ning Qi,Hongchao Qi,Tianrong Xiong,Youzhou He,Qinghong Cai,Zhuoqi Liu,Panyin Wang,Yongcheng Feng,Lin Chen,Bowen Lei,Xingyan Liu
The interfacial agglomeration in photocatalysts synthesized via high-temperature methods leads to hindered charge carrier mobility, severely limiting their photocatalytic performance. Herein, we introduced a room-temperature sulfidation strategy for the fabrication of CdS/CuS heterojunctions utilizing Cu-BTC. The optimized CdS/CuS composite demonstrated an exceptional hydrogen evolution rate of 14.07 mmol·h −1 ·g −1 , which was 7.5 times greater than that of pristine CdS. The slow release of Cu 2+ from Cu-BTC at room temperature effectively inhibited interfacial agglomeration. This was further confirmed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Furthermore, the formation of a CdS/CuS type-II heterojunction was confirmed by Mott-Schottky measurements, Tauc analysis, and valence band X-ray photoelectron spectroscopy (VB-XPS) analysis. Owing to the interfacial electronic coupling of CdS/CuS, charge carrier recombination is suppressed while carrier migration and separation are accelerated, leading to a significant enhancement in the hydrogen evolution activity. This work therefore proposes a feasible room-temperature synthesis strategy for fabricating high-quality heterojunctions, which effectively suppresses interfacial agglomeration and accelerates charge carrier transfer, resulting in enhanced photocatalytic performance.
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高影响因子
Surfaces and Interfaces
·
2026
·
IF 6
Jiyuan Zhang,Yifan Yang,Zhengtong Zhu,Rui Cao,Mengchao Feng,Qiang Li,Guojun Ji,Jianbin Zhang
A g-C 3 N 4 @(H/C-CdS) photocatalyst via a microinjection titration-stirring strategy. • g-C 3 N 4 suppressed H/C-CdS nanoparticle agglomeration enhancing active site exposure. • CS 2 SM-modified CdS crystallization improved charge transfer and defect regulation. • To achieve 78.37 % TC degradation in 60 min under sunlight. The development of efficient photocatalysts for visible-light and solar-driven degradation of wastewater treatment containing antibiotics remains a significant challenge. Here, this work reports a novel g-C 3 N 4 @(H/C-CdS) catalyst synthesized via a facile microinjection titration-stirring strategy based on a dual-interface design. Through comprehensive morphological and structural characterization, the catalyst demonstrated optimized two-dimensional layered structures, enlarged specific surface areas, and narrower band gaps, which were essential for its superior photocatalytic activity. The system simultaneously established a semiconductor heterojunction between g-C 3 N 4 and CdS as well as a Z-scheme interphase junction between hexagonal and cubic CdS, effectively facilitating charge separation and transfer. Notably, the incorporation of CS 2 -storage material (CS 2 SM) as a crystallization modifier precisely controlled CdS crystal phases and defect states. Benefiting from these structural and electronic properties, the composite achieved efficient cycling stability and remarkable photocatalytic degradation efficiency for 150 mg/L tetracycline, achieving degradation rates of 76.08% under visible light and 78.37% under natural sunlight within 60 min. This work provides detailed insights and a solid foundation for designing advanced dual-interface photocatalysts for solar-driven wastewater treatment. Download: Download high-res image (270KB) Download: Download full-size image
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高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121573
·
IF 7.5
Meijuan Ding,Mei Li,Qingyang Yu,Ziyu Li,Jingyi Nie,Aohui Ping,Chaoqi Ding,Hongbo Li,Bing Yang,Zhiliang Jin
In the photocatalytic water-splitting hydrogen evolution reaction, synthesizing an electron-rich photocatalyst and achieving effective solid-liquid separation are of paramount importance. In this study, CoTiO 3 nanoparticles (CTO) were synthesized using a combination of hydrothermal and calcination methods. Hexagonal CdS (CS) was prepared via the urea-thermal method, and CTO/CS composites were successfully fabricated in a single step through a physical stirring technique. Following the preparation of chitosan hydrogel beads (CHB), they were modified by incorporating ε-polylysine to form CHBL catalysts with a particle diameter of 2 mm. In situ growth of CTO/CS composite materials was conducted while preparing CHBL and performing photocatalytic hydrogen evolution experiments with the newly prepared composite catalyst. The results indicate that the novel composite photocatalyst CTO/CS-15@CHBL has strong hydrogen evolution performance. Under a 10 W LED, the hydrogen evolution rate is 26.2 mmol‧g −1 ‧h −1 , and at a wavelength of 450 nm, the AQY was measured at 1.17 %. Meanwhile, after seven cycles of use (a total of 35 h), there was no significant decline in hydrogen evolution activity, demonstrating that CTO/CS-15@CHBL has good stability for hydrogen evolution. Based on DFT, XPS and KPFM characterization, it is proposed that a Z-scheme heterojunction is established between CTO and CS. The synthesis of CTO/CS-15@CHBL can effectively enhance reaction performance, helping to address issues such as difficulties in solid-liquid separation after the reaction. This research offers new insights into enhancing photocatalytic hydrogen evolution activity and improving catalyst recovery.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Xinyue Zhang,Yuandong Lin,Qijun Wang,Jun-Hu Cheng
Carbon dots endowed MIL-53(Fe) with four synergistic functions. • A dual-mode aptasensor enabled accurate pathogen detection. • A closed-loop strategy integrated detection with safe pathogen elimination. • A paper-based assay achieved rapid visual food safety screening. The increasing prevalence of foodborne pathogens has created an urgent need for integrated strategies on combining rapid on-site detection with safe inactivation. In this study, a multifunctional aptamer-modified CDs@MIL-53(Fe) nanocomposite was developed to construct a closed-loop management platform integrating target recognition, dual-mode signal transduction, and in situ photothermal-chemodynamic sterilization. This nanocomposite uniquely combined four functionalities within a single material: fluorescence emission, oxidase/peroxidase-mimicking activity, photocatalytic reactive oxygen species generation, and efficient photothermal conversion. After aptamer functionalization, the platform enabled both colorimetric and fluorescence dual-mode detection. Using Listeria monocytogenes as a proof-of-concept model, detection limits of 6.01 CFU/mL (colorimetric) and 61.38 CFU/mL (fluorescence) were obtained with the proposed method, within a linear range of 10 1 –10 6 CFU/mL. Importantly, the sensing mechanism allowed easy adaptation to other pathogens by simply replacing the aptamer. After detection, the same platform achieved in situ synergistic sterilization (>99.5%), and the used test strips could be safely discarded. Validation in chicken breast and milk samples, along with successful translation to a paper-based device, demonstrated the practical application potential of this universal pathogen management strategy in food safety supervision and disease prevention.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Yulin Tan,Yanghao Wu,Yanfang He,Ying Yang,Huimin Zhang,Yufang Xie,Chenglin Zhang,Yuan Liu,Mingming Chen,Dawei Cao
Simultaneously strengthening interfacial electronic interaction and charge-separation driving force remains a central challenge in photocatalytic heterojunction design. Herein, a chemically matched control platform is established by coupling CdS with ferroelectric tetragonal BaTiO 3 (T-BTO) and non-ferroelectric cubic BaTiO 3 (C-BTO), enabling direct identification of the ferroelectric contribution. Ferroelectric polarization in T-BTO promotes preferential Cd 2+ anchoring, more uniform CdS growth, and tighter interfacial contact, ultimately achieving stronger electronic coupling than in C-BTO/CdS. More importantly, the ferroelectric polarization field cooperates with the built-in electric field of the type-II heterojunction, thereby providing an enhanced driving force for charge separation and transfer. Consequently, T-BTO/CdS delivers a hydrogen evolution rate of 13.28 mmol g −1 h −1 under Xe lamp irradiation, outperforming pure CdS (0.95 mmol g −1 h −1 ) and C-BTO/CdS (5.23 mmol g −1 h −1 ) by factors of 13.9 and 2.5, respectively. This work identifies ferroelectric polarization engineering as an effective strategy for concurrently optimizing interface coupling and charge separation driving force in photocatalytic heterojunctions.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 15
·7195-7201
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IF 3.925
Huan Liu,Jingzhe Li,Yue Chen,Xuting Sun,Xun Xu,Lingfang Qiu,Shuwang Duo,Ping Li
One of the feasible strategies to enhance the photocatalytic properties of TiO2 is to broaden the visible light response range and accelerate the separation rate of photo-induced electron–hole (e−–h+) pairs by designing and synthesizing heterostructures using narrow-band-gap semiconductors. In this study, a ternary heterostructure based on MOF-derived TiO2 was first fabricated via the self-sacrificing template method followed by a two-step chemical bath process. The as-obtained CdS/ZnIn2S4/TiO2 ternary heterostructures exhibited better visible-light photocatalytic properties for the degradation of Rhodamine B (RhB) and tetracycline (TC) than single-component and dual-component systems. Among the ternary heterostructures, it was found that the CdS/ZnIn2S4/TiO2-II showed the highest photoreactivity of 95.3% for RhB removal and 91.8% for TC removal within 40 min. In addition, CdS/ZnIn2S4/TiO2-II could maintain its photocatalytic properties during the stability test. The improvement in photocatalytic properties is attributed to the reasonable construction of a ternary heterostructure, which significantly accelerates the separation and transport of photogenerated e−–h+ pairs, improves the specific surface area, and broadens the visible light response range. This study demonstrates a promising strategy for developing ternary heterostructures as effective photocatalysts for the degradation of organic pollutants.
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高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Qiaozhen Bao,Dan Lin,Yaoran Gao,Lina Wu,Jinhua Fu,Khuslen Galaa,Xinhua Lin,Liqing Lin
Herein we develop a novel “off–on-off” fluorescent nanosensor for the ultra-sensitive detection of protamine and trypsin based on the as-prepared nitrogen and sulphur doped carbon dots (N,S-CDs) and gold nanoparticles (AuNPs). N,S-CDs were treated as fluorophore, while AuNPs were treated as fluorescence absorber. By experimental studies, the fluorescence quenching mechanism of N,S-CDs by AuNPs was inner-filter effect (IFE). Upon addition of protamine to the mixed aqueous of N,S-CDs/AuNPs, the electrostatic interaction and Au-N bond between protamine and AuNPs resulted in AuNPs aggregation, and the quenched fluorescence of N,S-CDs could be recovered. Protamine is rich in arginine and can be specifically hydrolyzed by trypsin, resulting in the deaggregation of AuNPs and further quenching the fluorescence of N,S-CDs. Thus, we can determine the concentration of protamine and trypsin by measuring fluorescence intensity of N,S-CDs. Under the optimized conditions, the fluorescence intensity showed a good linear relationship with protamine concentration of 20–260 ng/mL with the detection limit of 4.7 ng/mL. Meanwhile, quantitative determination of trypsin in a range from 10 to 140 ng/mL with the detection limit of 4.3 ng/mL can be achieved in this fluorescent nanosensor. This fluorescent nanosensor also showed excellent selectivity, and we successfully applied it for the detection of protamine and trypsin in human urine samples. Based on the above findings, we conclude that this novel “off–on-off” fluorescent nanosensor has great potential in clinical diagnosis.
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高影响因子
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