Chemosensors
·
2025
·Vol. 13
·期 9
·340
·
IF 3.7
Hongmei Gao,Yourong Zhao,Yuhong Xie,Yiying Wang,Jie Che,Daojiang Gao,Zhanglei Ning
In this study, a novel carbon quantum dots-functionalized UiO-66 composite was successfully prepared via the post-synthetic modification method and further developed into a ratiometric fluorescent probe for detecting uric acid. The composite demonstrates excellent structural and luminescent stability under challenging environmental conditions. As a ratiometric fluorescent probe, its recognition principle relies on the ratio of response signals from two different fluorescent emission centers in the composite. In the presence of uric acid, the fluorescence emission intensity at 430 nm from CDs did not change significantly. However, the fluorescence intensity at 545 nm from Tb3+ions decreased remarkably. This material was evaluated for its capacity to sense urinary components and was shown to specifically recognize uric acid over a wide concentration range (0~5 × 10−3M). Moreover, it exhibited strong resistance to interference and high sensitivity in uric acid detection. The detection limit (LOD) was determined to be 0.102 μM through quantitative analysis. The sensing mechanism was validated through spectral overlap and fluorescence lifetime analysis, which can be attributed to the fluorescence resonance energy transfer (FRET) process. This ratiometric fluorescent probe provides an efficient and reliable strategy for detecting the biomarker uric acid.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHIMICA ACTA
·
2025
·Vol. 192
·期 5
·1-11
·
IF 5.3
Tian Li,Li Huiling,Han Pengfei,Ma Guangping,Wang Wenzhuo,Jiang Hanyue,Lu Juan
An electrochemiluminescence (ECL) sensor was constructed based on Ru(bpy) 3 2+ @Au and GO@CdS for the detection of tartrazine (TTZ). In the presence of the co-reactant TPrA, Ru(bpy) 3 2+ and CdS quantum dots (QDs) were used as dual luminophores to synergistically amplify the ECL signal of the sensor. Gold nanoparticles (Au NPs) enhanced the electron transport capability of the system and thereby amplified the ECL intensity. Graphene oxide (GO), as a carrier, has a special wrinkle-like structure that not only adsorbed a substantial amount of CdS QDs but also prevented their agglomeration. Additionally, a more sensitive detection method was established based on the quenching of the ECL signal, which occurred due to the interaction between Ru(bpy) 3 2+ and TTZ. A low detection limit (1.3 × 10 –13 mol·L −1 , S/N = 3) was obtained for TTZ concentrations ranging from 4.0 × 10 –13 to 4.0 × 10 –8 mol·L −1 . Finally, actual measurement results from three beverage samples demonstrated that the prepared sensors possess excellent practical capabilities for TTZ detection. Graphical
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Shuhe Chen,Yufen Liu,Taiyu Huang,Tao Liu,Siyuan Yang,Xin Cai,Qiongzhi Gao,Xiaosong Zhou,Feng Peng,Shengsen Zhang
Molybdenum carbide (MoC) has attracted significant attention as a cocatalyst for photocatalytic hydrogen evolution. However, facile and scalable methods to synthesize hollow MoC materials with high specific surface areas remain limited. Herein, hollow-structured MoC/N-doped carbon (MCN) cocatalysts were innovatively synthesized via high-temperature calcination of MoO3-containing polydopamine (MoO3/PDA) precursors. These MCN materials were subsequently coupled with CdS through a solvothermal process to construct composite photocatalysts (MCN/CdS, denoted as MCS). Under simulated sunlight irradiation (AM 1.5G), the optimized MCS catalyst achieved an exceptional photocatalytic hydrogen evolution rate of 26.4 mmol·g–1·h–1, which is 10.8 times higher than that of the benchmark Pt/CdS catalyst. The MCS catalyst also demonstrated outstanding stability, maintaining efficient hydrogen production after 20 h of continuous illumination. The superior performance of MCS stems from two key advantages of the MCN cocatalyst: (i) its high specific surface area enhances CdS dispersion and provides abundant active sites for hydrogen evolution; (ii) the N-doped carbon matrix broadens light absorption and facilitates charge carrier transport. This work introduces an effective approach for the rapid and mild synthesis of ultrahigh surface area hollow nanospherical transition-metal carbons, providing valuable insights for advanced photocatalytic systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Peng Yu,Juan Tan,Ronghao Zhuang,Jing Tang,Zhiguo Wang,Chun Zhang,Qiongchao Wang,Xinxin Xiao,Wei Huang
Reutilizing heavy metal enriched adsorbents into efficient photocatalysts for antibiotic removal is of great economic value. Herein, spent alkali-lignin biochar (ALB) with enriched Zn 2+ /Cd 2+ ions is valorized into ZnS-CdS/C photocatalyst via a simple vulcanization method. ZnS-CdS/C (3:1) exhibits a superior photocatalytic removal efficiency of 98.6 % for levofloxacin (LEV), with about 60 % of the initial value remained after four cycles. It also shows good photocatalytic removal efficiencies of 92.1 %, 95.4 % and 84.0 % for enrofloxacin, ciprofloxacin and tetracycline, respectively. Electron paramagnetic resonance (ESR) shows that the introduction of ZnS and CdS in ALB promotes the generation of oxygen vacancies and persistent free radicals (PFRs). The photocatalytic LEV removal mechanism of ZnS-CdS/C indicates that both the abundant PFRs and photogenerated electrons serve as electron donors, efficiently reducing dioxygen to superoxide free radicals (·O 2 - ). The ·O 2 - formed in the above two ways continuously degrade the LEV molecules. Finally, the biotoxicity and developmental toxicity of LEV degradation intermediates confirms that the ZnS-CdS/C degradation system can remove LEV effectively with reduced harm to the ecological environment.
✓ 已验证
DOI
高影响因子
NANO
·
2022
·
IF 1.438
Canguo Li,Qiying Zhu,Meng Jiang,Huiqin Chang,Liguo Zhao,Ling Kong,Zhiwei Chen,Jun Wang,Hongyun Tian
Cow milk is an important source of protein, but it is also a food that can cause allergies. In this research, a novel photoelectrochemical immunosensor based on CdWO 4 –CdS type-II heterojunction was constructed for the detection of allergen α -lactalbumin ( α -Lac) in milk. CdWO 4 –CdS heterojunction was synthesized by one-step hydrothermal method. Compared with pure CdWO 4 , the CdWO 4 –CdS heterojunction significantly improved the photocurrent intensity. The polydopamine (PDA) was used as a crosslinking agent to couple basis materials and biomolecules. Ascorbic acid was used as an efficient electron donor to eliminate the photo-generated holes and inhibit the recombination of photo-generated electrons and holes. Under the optimum experimental conditions, the photocurrent intensity reduced linearly with the logarithm of α -Lac concentration ranging from 0.001 ng ⋅ mL − 1 to 10 ng ⋅ mL − 1 and the limit of detection was 0.17 pg ⋅ mL − 1 . The constructed photoelectrochemical immunosensor exhibited excellent stability, selectivity and reproducibility, which provided a novel ideal for sensitive detection of α -Lac and shed light on monitoring of other allergenic proteins in foods.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Xu Jia,Zhiqi Song,Jiaqi Zhang,Jiaolong Qiao,Liuxue Zhang,Xiulian Wang,Shuyan Jiao,Guomin Yu
To enhance the hydrogen production efficiency and stability in photocatalysis, a ternary heterojunction composite CdS@Ce-MOF/g-C 3 N 4 was developed by in-situ growth of Ce-MOF and CdS on graphitic carbon nitride (g-C 3 N 4 ). The synthesized composite not only mitigated the photocorrosion of sulfides but also established a stepwise energy-level alignment and built-in electric field within the heterojunction. These structural advantages effectively facilitated the separation of photogenerated electron-hole pairs and suppress their recombination, thereby significantly improving photocatalytic hydrogen evolution performance. Under simulated sunlight irradiation, the composite exhibited a hydrogen production rate of 4953.125 μmol g −1 , which is 7 times higher than that of pristine g-C 3 N 4 . Moreover, the hydrogen evolution rate remained stable with negligible degradation after multiple cycling tests, demonstrating excellent durability. The CdS@Ce-MOF/g-C 3 N 4 composite, with its superior hydrogen generation capacity and robust stability in photocatalytic water splitting, provides a promising alternative for advancing research on high-performance photocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2025
·
IF 4.8
Yonggang Lei,Yongchun Tong,Qingyun Wang,Yuqi Han,Xiaojuan Feng,Zhen Li,Shoubo Li,Kim Hoong Ng
A well-engineered heterojunction cocatalysts play a pivotal role in enabling efficient H 2 evolution over semiconductor materials. Herein, an effective cocatalyst derived from MoP/Mo 2 N heterostructure was proposed and incorporated to CdS for a drastically enhanced H 2 production from water under visible light irradiation. By optimizing catalytic formulation, the best-performing CdS@MoP/Mo 2 N(3 wt%) demonstrates a remarkable H 2 production rate of 10653 μmol h⁻¹g⁻¹ , representing an 18-fold enhancement compared to bare CdS. This remarkably high activity outperforms CdS enhanced by conventional noble metal cocatalysts (e.g., Ag, Au, Pt) and MoS x -based materials, underscoring the outstanding cocatalytic effect promised by MoP/Mo 2 N. In parallel, the optimized photocatalyst also achieved a remarkable stability for H 2 production over 9 consecutive cycles with a total irradiation time of 45 h, alongside a noticeably high apparent quantum efficiency (AQE) of 13.5 % upon irradiated by 420 nm-light. According to analysis, these enhanced performances are ascribed to the promoted interfacial charge transfer kinetics and significantly reduced hydrogen evolution overpotential of CdS@MoP/Mo 2 N(3 wt%), both of which contribute to the superior catalytic activity. Theoretical investigation also suggested a much-facilitated electron shuttling and proton desorption with MoP/Mo 2 N attached to CdS photocatalyst. Overall, this work demonstrates that our developed MoP/Mo 2 N heterostructure cocatalysts can effectively serve as alternatives to noble metals(Ag, Au, Pt) in solar-driven photocatalytic hydrogen production.
✓ 已验证
产品关联
DOI
高影响因子
ANALYST
·
2022
·Vol. 147
·期 14
·3258-3265
·
IF 5.227
Siyu Chen,Shu-Na Yun,Yujiao Liu,Ruijin Yu,Qin Tu,Jinyi Wang,Mao-Sen Yuan
The abuse of pesticides has introduced a large number of residues in soil and drinking water, which can then enter the food chain and the human body. Monitoring pesticide residues and developing simple and fast detection systems for pesticide residues is urgently needed. In this study, we presented one-pot prepared CdS fluorescent quantum dots (QDs) and explored their sensing application for organic pesticides. The CdS QDs can sensitively and selectively detect three different pesticides, dichlorvos (DDVP), paraquat, and glufosinate-ammonium, through different fluorescence responses. Paraquat can effectively quench the fluorescence of the QDs and DDVP can cause remarkable fluorescent enhancement. Glufosinate-ammonium can induce both 150 nm fluorescent blueshifting and 30-fold fluorescent enhancement. The probe exhibited low detection limits for the three pesticides: 1.44 μM for paraquat, 0.23 mM for DDVP, and 49.8 μM for glufosinate-ammonium. Furthermore, based on the results, we utilized the powerful functions of smartphones to establish a concentration-gray value standard curve through RGB values and gray values to realize the qualitative detection and quantitative analysis of DDVP. It is believed that this work presents a new platform for the simultaneous detection of multiple pesticides using a single QDs probe. The present on-site method using a smartphone is of great potential for water monitoring in rural areas.
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Siqi Liu,Wandi Kuang,Xiangjian Meng,Weiliang Qi,Samira Adimi,Haichuan Guo,Xuyun Guo,Erum Pervaiz,Ye Zhu,Dongfeng Xue,Minghui Yang
Low solar-to-fuel conversion in conventional semiconductor-based photocatalysts limits their commercial applications. Searching for highly efficient cost-effective co-catalysts is desirable for the development of artificial photosynthesis systems. In this work, we report a simple yet efficient electrostatic self-assembly process to synthesize one-dimensional Co 4 N-WN x -CdS composites for visible light-driven hydrogen evolution in pure water. Biphasic transition metal nitrides Co 4 N-WN x with high conductivity and enriched active sites leads to multi-level electrons transfer and lower over-potential for hydrogen production. Co 4 N-WN x -CdS composite, with optimized wt%, exhibits the highest rate of photocatalytic hydrogen evolution (14.42 mmol g −1 h −1 ) under vacuum condition. This rate is ~ 8 times higher than that of the Pt-CdS composite (1.78 mmol g −1 h −1 ).
研究领域:
材料科学
·
光化学
✓ 已验证
DOI
高影响因子
Advanced Materials Interfaces
·
2021
·Vol. 9
·期 1
·2101678
·
IF 6.147
Chen Pan,Jinyu Chao,Fushuang Niu,Songhai Xie,Haoyang Gu,Tianhui Su,Ke Hu,Dan-Wei Zhang,Ke Liu,Guangfeng Liu,Tengfeng Xie,Zhan-Ting Li,Liming Zhang
Solar-to-hydrogen conversion is a sustainable way of producing renewable fuels, yet the efficiency is limited by the poor photo-induced charge-carrier separation on electrode surface. Developing active and stable hydrogen evolution photocatalysts is challenging and entails intelligent material structure design and tailoring. Here, a novel water dispersible supramolecular metal organic framework (SMOF) is employed as a general and high-performance platform to encapsulate CdS quantum dots (QDs) for achieving highly improved solar-induced H 2 -production activity. Particularly, the CdS QDs@SMOF heterostructure exhibits an excellent H 2 generation activity of 49.4 µ mol h −1 (TOF = 47.0/h), exceeding those of most reported heterogeneous metal organic frameworks-based photocatalytic systems. Advanced characterizations disclose that the strong electrostatic interaction and light-induced charge transfer between SMOF and CdS QDs, combined with the high surface area, water dispersible nature, and abundant reactive centers synergistically contribute to this distinguished photocatalytic performance. The work not only demonstrates the water dispersible SMOF can serve as a versatile and effective platform supporting semiconductor to boost the photocatalytic H 2 -production performance without co-catalysts, but also paves avenues to the design and synthesis of SMOF-based heterostructures for general catalysis applications.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2016
·
IF 8.328
Chao Wang,Li Wang,Jun Jin,Jing Liu,Yu Li,Min Wu,Lihua Chen,Binjie Wang,Xiaoyu Yang,Bao-Lian Su
CdS is a very good visible-light responsive photocatalyst for hydrogen production. However, the fast recombination of photogenerated electron-hole pairs and quick photocorrosion limit its application in photocatalysis. To address these problems, we herein have designed and synthesized monodisperse polyaniline@cadmium sulfide (PANI@CdS) core-shell nanospheres to probe the mechanisms of photocorrosion inhibition and photocatalytic H 2 production. All the PANI@CdS core-shell nanospheres demonstrate highly enhanced photocorrosion inhibition and photocatalytic hydrogen production comparing to the pure CdS nanospheres. Particularly, the PANI@CdS core-shell nanospheres with the thinnest PANI shell possess the highest hydrogen production rate of 310 μmol h −1 g −1 in 30 h without deactivation. Our results reveal that the newly formed C S and/or N Cd bonds in PANI@CdS prevent the reduction of the surface sulfide ions to sulphur, leading to effective photocorrosion inhibition. Our results also verify that the photogenerated holes migrating from valence band (VB) of CdS to the highest occupied molecular orbital (HOMO) of PANI leads to the enhanced photocatalytic hydrogen production. This work can shed some light on the mechanism of conducting polymers modifying metal sulfides for effective photocorrosion inhibition and highly enhanced photocatalytic activities.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2015
·Vol. 75
·期 1
·198-205
·
IF 1.532
Liu H. F.,Dai W. B.,Wang H.,Zeng L. K.,Wang Y. M.
Abstract The color of the CdS
x
Se 1− x
@ZrSiO 4 red ceramic pigment is associated with the condensed CdS
x
Se 1− x
particles, which is incorporated into zirconium silicate microcrystals as a robust inclusion body. The pigments were prepared via the gel co-precipitation method. The as-prepared pigments were characterized by X-ray diffraction, CIE-L*a*b* color measurement, scanning electron microscopy, acoustic particle sizer, dynamic laser scattering particle size analysis and polarized optical microscopy, respectively. The results indicate that the pigments prepared in ethanolamine solution show a more intensive tinting capacity, superior thermal stability and the finer particle size than those prepared in prevailing pure water. The prepared red pigments can be potential applied as a promising ink material for inkjet printing. Graphical Abstract Diagram of acid picking pores on pigment encapsulation
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）