Journal of Materials Chemistry C
·
2024
·
IF 5.7
Yanyang Li,Huimin Du,Yue Ma,Meifang Liu,Jian Zou,Shentang Wang,Jun Yang,Shanshan Hu,Jun Lin
The existence of energy transfer channels from the self-trapped exciton (STE) emission to lanthanide (Ln3+) ions in double perovskites (DPs) opens up new possibilities for high security anti-counterfeiting applications. In the present investigation, we synthesized Sb3+/Ho3+/Er3+ doped Cs2NaGdCl6 rare-earth-based DPs using a simple solvothermal method, whose luminescence could be quenched by water and restored after drying. The efficient down-shifting (DS) red emission from the 4f–4f transition of Ho3+ was enhanced 8-fold due to the energy transfer of STEs → Ho3+ ions via Sb3+ sensitization. The DS and up-conversion (UC) dual-mode multicolor emissions were obtained by further introducing Er3+. Specifically, the DS luminescence of the tri-doped sample under the UV region and that under 448 nm irradiation were white and red, respectively; and the UC luminescence under 980 nm irradiation was green. In view of their stimulus response to water and dual-mode multicolor luminescence properties, advanced anti-counterfeiting materials based on the obtained samples were designed.
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Rui Jiao,Yiwan Si,Wenjie Fan,Hanxue Sun,Jiyan Li,Zhaoqi Zhu,An Li
Considering the dangers of radioactive elements to the human body and the environment, the efficient and rapid removal of radioactive ions in water is an urgent matter. In this paper, an efficient adsorption material based on kinetic quantum sieving (KQS) effect through skillfully molecular design with specific space structure conjugated microporous polymer hollow spheres (CMPs-1) for disposal of radioactive iodide/cesium ions is reported. The adsorption properties of iodide/cesium ions at different concentrations at 10℃ were investigated. Moreover, the test results show that the iodide ions adsorption capacity of the CMPs-1 will increase with the increase of iodine ions concentration when the temperature, volume, and other conditions are fixed. The CMPs-1 exhibited up to the highest 16.93 mg g −1 iodide adsorption capacity for the solution containing 0.10 mmol L -1 iodide ions within 6 h under static adsorption experiments at a low temperature of 10℃, and the adsorption rate fitted by the pseudo-second-order kinetic model was 0.11 g mg -1 h −1 . Besides, the CMPs-1 maintained an effective adsorption capacity of 16.93, 7.51 and 5.92 mg g -1 at pH = 7, 10 and 13, respectively. Furthermore, unexpectedly, the constructed CMPs-1 showed superior heat resistance with higher adsorption capacity (26.32 mg g -1 , 1.6 times) at 30℃ compared to 10℃. The improvement reason is that the expansion of pores (significantly increased at 4–20 nm), and the developed porosity can provide enough space to accelerate the diffusion rate of reactants and intermediates, exposing more active sites. And the π-conjugated system and hollow structure of CMPs materials can effectively solve the problem of low diffusion rate caused by low temperature and microporous structure in the transfer of iodide/cesium ions. Therefore, this work demonstrates the customizable potential of materials in the field of molecular adsorption applications and also provides a new idea for the design of unique hollow structure adsorption materials.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xi Zhang,Xudong Zheng,Tongtong Xu,GuoMeng Li,Jinfeng Mei,Zhongyu Li,Xiukun Ge
Cesium-137 (Cs(I)) is highly hazardous in low-level wastewater and is a major problem in low-level nuclear wastewater. Its effective removal from contaminated wastewater is crucial to ensuring environmental safety and public health. In this study, cesium ion-imprinted composite membranes (I-DBC) were developed for selective separation of Cs(I) using dopamine modification and ion-imprinting techniques. Bacterial cellulose (BC) was used as a carrier in the membrane matrix, and the adsorption capacity of the material was greatly improved after hydrophilic dopamine mimetic bonding and ion blotting techniques. Rapid and highly selective adsorption of cesium ions from low concentration nuclear energy wastewater was realized. The researchers conducted both static and dynamic adsorption experiments on Cs(I) to evaluate the performance of the I-DBC composite membranes. The results showed that the I-DBC composite membrane was more compatible with the Langmuir model and adsorbed Cs(I) mainly by chemical monolayer adsorption, with a maximum adsorption capacity of 50.016 mg g–1 under optimal conditions. In low concentration wastewater, the maximum adsorption capacity of the I-DBC was 4.093 mg g–1. Furthermore, during dynamic permeation experiments, the breakthrough point of the I-DBC was approximately 20 min. The membrane demonstrated good flux properties, which underscores its potential for practical application in the treatment of nuclear wastewater. The findings suggest that the I-DBC composite membrane holds promising prospects for the efficient removal of cesium ions from contaminated water, contributing to safer and more effective nuclear wastewater management.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2024
·
IF 8.2
Guohui Wang,Qixin Zhang,Lailai Qin,Kaixuan Tan,Chunguang Li,Lianshun Li,Tinggui Yang,Xiaojuan Liu
A novel metal-organic framework (MOF) material, MIL-100(Fe)-DMA, was synthesized using the solvothermal method. The structure of the MOF was characterized using scanning electron microscopy-energy dispersive X-ray spectroscopy, N 2 adsorption–desorption isotherms, X-ray diffraction analysis, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, and Mössbauer spectroscopy. Batch adsorption experiments were performed to investigate the effects of initial Sr 2+ and Cs + concentrations, adsorption time, pH, and coexisting cations on the adsorption performance of the material. The adsorption mechanism was further elucidated using adsorption kinetics and isotherm models. The results indicated that the adsorption of Sr 2+ and Cs + does not significantly affect the MOF material structure. As reaction time and initial ion concentration increased, the adsorption capacity of MIL-100(Fe)-DMA for Sr 2+ and Cs + increased rapidly and then gradually reached equilibrium. Optimal adsorption occurred under alkaline conditions, with maximum adsorption capacity observed at pH = 8. The adsorption process for Sr 2+ and Cs + was well described by the pseudo-second-order kinetic model, the Weber–Morris model, and the Langmuir adsorption isothermal model. The adsorption process was mainly identified as monolayer chemical adsorption, influenced by multiple factors. Characterization combined with density functional theory calculations revealed that the unsaturated carboxylic acid groups on the surface of the MOFs play a crucial role in the interaction with Sr 2+ and Cs + .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Pei Jiang,Hao Liang,Jie Sun,Yinhua Wang,Yi Zhang,Meng Zhou,Gang Yang,Yongsheng Zhu
Inorganic lead-free halide double perovskites are attracting significant attention for light-emitting diodes (LEDs), owing to their broad-band emission of self-trapped excitons (STEs) and exceptional environmental friendliness. However, it remains a challenge to modulate their spectra and enhance the photoluminescence quantum yield (PLQY) to meet different application requirements. Herein, a doping route was adopted to incorporate Sb 3+ ions into the Cs 2 NaInCl 6 for enhancing STEs density, and the highest PLQY of Cs 2 NaInCl 6 :3 %Sb 3+ single crystals (SCs) was up to about 84 %. By introducing Mn 2+ ions the emission color was flexibly modulated from blue to red. Especially, white light emission with high color rendering index and tunable correlated color temperature for Sb 3+ , Mn 2+ co-doped Cs 2 NaInCl 6 SCs were realized by high pressure treatment as well as doping commercial green phosphor. These findings provide new inspiration and strategies for the design and synthesis of novel inorganic halide double perovskites with enhanced optoelectronic properties.
✓ 已验证
产品关联
DOI
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Xiaolong Dong,Xin Zhao,Yuhang Zhang,Maosen Hu,Lifan Shen,Edwin Yue Bun Pun,Hai Lin
Driven by the escalating demand for cutting-edge materials in interactive encryption and customized display, the optimization of excitonic coupling mechanisms in perovskite-based luminescent systems has emerged as a pivotal focus in advanced materials research. Inspired by synergistic doping (SD), a photoswitchable energy transfer channel is realized utilizing the UV-responsive Cs 2 NaInCl 6 : Sb 3+ -Ho 3+ (CNIC: Sb-Ho) phosphor. Benefiting from the self-trapped exciton of Sb 3+ , the visible blue luminescence of Ho 3+ achieves excitation reconstruction through SD, with a sensitization coefficient from Sb 3+ to Ho 3+ in CNIC reaching two orders of magnitude. Notably, CNIC: Sb-Ho quantum dot is embedded into polyacrylonitrile (PAN) and polymethyl methacrylate (PMMA) fibers, respectively, and distinct color coordinate channels are created by altering the doping concentration and fiber matrix, thereby enabling the personalization and the customization of the desired colors with enhanced precision. Furthermore, excellent read-in performance under UV irradiation is achieved by screen-printing CNIC: Sb-Ho microcrystal on nanofibers and combining it with ACSII code, which endows nanofibers with UV-induced controllable shape programming behavior for interactive multidimensional information encryption. This work establishes an enhanced visual interaction framework through effectively integrating perovskite fluorescence tunability and nanofiber adaptive structures, thus opening new possibilities for the smart application of next-generation optical encryption technology.
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
·
2024
·
IF 15.7
Weijie Ren,Ning Li,Qing Chang,Jie Wu,Jinlong Yang,Shengliang Hu,Zhenhui Kang
ABSTRACT Owing to the rapid recombination of photogenerated electron-hole pairs with strong Coulomb interactions, the photocatalytic activity of metal-free conjugated polymers is often unsatisfactory. This article reports a simple method for incorporating carbon dots (CDs) into highly crystalline covalent triazine frameworks (CTFs) by directly heating a pretreated mixture of 1,4-dicyanobenzene, CDs, and alkali metal salts in air. The resultant photocatalyst exhibits a H 2 O 2 production rate, solar-to-chemical conversion efficiency, and apparent quantum yield of 2464 μmol h –1 g –1 , 0.9% at full spectrum, and 13% at 500 nm, respectively, surpassing most reported photocatalysts. The results of this study reveal that CDs can serve as hole extractors to efficiently drive exciton dissociation and can offer active sites for water oxidation reactions. This study is also the first to observe that alkali metal ions can interact with the carboxylic acid groups on the surface of CDs during synthesis to enhance the hole-extraction ability of CTFs, thereby accelerating photocatalytic H 2 O 2 production. This study provides insights into the rational design of highly efficient CDs-based photocatalysts.
✓ 已验证
产品关联
DOI
高影响因子
Small Methods
·
2024
·
IF 10.7
Ran An,Pengye Du,Yuan Liang,Shuyu Liu,Yi Wei,Pengpeng Lei,Hongjie Zhang
Optical encryption shows great potential in meeting the growing demand for advanced anti-counterfeiting in the information age. The development of upconversion luminescence (UCL) materials capable of emitting different colors of light in response to different external stimuli holds great promise in this field. However, the effective realization of multicolor UCL materials usually requires complex structural designs. In this work, orthogonal UCL is achieved in crystals with a simple structure simply by introducing modulator Tm 3+ ions to control the photon transition processes between different energy levels of activator Er 3+ ions. The obtained crystals emit red and green UCL when excited by 980 nm and 808 nm lasers, respectively. The orthogonal excitation-emission properties of crystals are shown to be very suitable for high-level optical encryption, which is important for information security and anti-counterfeiting. This work provides an effective strategy for obtaining orthogonal UCL in simple structural materials, which will encourage researchers to further explore novel orthogonal UCL materials and their applications, and has important implications for the development of the frontier photonic upconversion fields.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APL Materials
·
2024
·Vol. 12
·期 6
·
IF 5.3
Li Cheng,Yu Yang,Han Peigeng,Zhou Wei,Li Hui,Lu Ruifeng
Lead-free halide double perovskites (DPs) have been regarded as a class of environmentally friendly and promising optoelectronic materials. Herein, we report the synthesis, luminescence properties, and optoelectronic applications of lanthanide (Ln = Yb 3+ /Er 3+ )/M (M = Bi 3+ /Sb 3+ /Mn 2+ ) codoped Cs 2 NaInCl 6 single crystals (SCs). The Yb/Er codoped Cs 2 NaInCl 6 SCs show upconversion and downshifting visible/short-wave infrared (SWIR) photoluminescence emission. After further introduction of Sb 3+ /Mn 2+ ions into the host, bright blue and red emissions are observed with the PLQYs of 96.28% and 21.58%, respectively. With the incorporation of Bi 3+ ions, the upconversion and visible/SWIR luminescence intensities of Yb/Er/Bi codoped Cs 2 NaInCl 6 SCs are significantly enhanced. The incorporation of Bi 3+ dopant in the DP host can construct a more efficient energy transfer process, resulting in excellent luminescence efficiency. The multi-ion codoped DP system exhibits great potential for optoelectronic applications in the fields of anticounterfeiting, photodetector, and x-ray imaging. This work will help guide the design and development of environmentally friendly multi-functional materials.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Tonghui Zhao,Yuqing Zhang,Lifei Wu,Qitong Zhong,Wei Xie,Bo Li,Dongling Geng,Haibo Zeng
In this research, we present an innovative, environmentally friendly, and cost-effective alcohothermal method for synthesizing Mn2+ and Mn2+–Cu+ doped 0D Cs3ZnCl5, a green luminescent material, marking the first time this approach has been reported. An exhaustive analysis of the luminescence properties of both undoped and doped Cs3ZnCl5 was conducted, with a particular emphasis on the energy transfer mechanisms in the Mn2+ mono-doped and Mn2+–Cu+ co-doped systems. The results demonstrate the successful construction of an efficient energy transfer pathway that significantly enhances the luminescence efficiency of Cs3ZnCl5:Mn2+. Specifically, the photoluminescence quantum yield of Mn2+ within the Cs3ZnCl5 matrix has been improved from 51.6% to 71.1%, thanks to the Cu+ codopant acting as an effective energy transfer mediator. A mechanism for the luminescence and energy transfer phenomena observed in the Mn2+–Cu+ co-doped Cs3ZnCl5 system has been also proposed. Furthermore, to assess the practical applicability of the synthesized materials, their structural and photoluminescent stability were evaluated. In essence, our study presents a promising solution to current challenges in the synthesis of advanced luminescent materials and opens up new possibilities for harnessing the potential of Mn2+-activated 0D metal halides in optoelectronic applications.
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Zhongyuan Li,Mengdi Xu,Wuqi Liu,Xuesong Wang,Ye Li,Xianju Zhou,Zhen Fang,Lixin Ning
Broadband near-infrared (NIR) luminescent materials hold the key to next-generation, smart, NIR light sources. The emerging halide perovskite materials are regarded as promising candidates for optoelectronics because of their superior optical properties and easy solution processability. However, it remains a major challenge to realize efficient and thermally stable broadband NIR luminescence in these materials. Herein, we report a novel strategy to achieve broadband NIR luminescence by utilizing the transitions from the lowest 1T2 level of Mo4+ to the components of its 3T1 ground state in the soft Cs2Zr(Cl,Br)6 lattice. The multiple transitions, each occurring within the (4d2) t22 crystal-field configuration and containing zero-phonon and vibronic contributions, superimpose on each other to generate the broadband NIR emission. The emission spectrum encompasses the long wavelength region from 800 to 1400 nm centered at 970 nm with a full width at half-maximum of 170 nm. More importantly, the title NIR phosphor shows an exceptional quantum efficiency (66.9%) and thermal stability (67%@150 °C). The as-fabricated NIR phosphor-converted light-emitting diode shows great potential as an NIR lighting source. This research opens a new horizon for realizing high-performance broadband NIR luminescence by exploiting multiple electronic transitions of activators in the soft lattice.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·
IF 14.3
Yijun Zhao,Xingru Yang,Lun Yang,Fangjian Xing,Cihui Liu,Yunsong Di,Guiyuan Cao,Shibiao Wei,Xifeng Yang,Xiaowei Zhang,Yushen Liu,Zhixing Gan
The smart materials with multi-color and stimuli-responsive luminescence are very promising for next generation of optical information encryption and anti-counterfeiting, but these materials are still scarce. Herein, a multi-level information encryption strategy is developed based on the polychromatic emission of Sb-doped double perovskite powders (SDPPs). Cs 2 NaInCl 6 :Sb, Cs 2 KInCl 6 :Sb, and Cs 2 AgInCl 6 :Sb synthesized through coprecipitation methods exhibit broadband emissions with bright blue, cyan, and orange colors, respectively. The information transmitted by specific SDPP is encrypted when different SDPPs are mixed. The confidential information can be decrypted by selecting the corresponding narrowband filter. Then, an encrypted quick response (QR) code with improved security is demonstrated based on this multi-channel selection strategy. Moreover, the three types of SDPPs exhibit three different water-triggered luminescence switching behaviors. The confidential information represented by Cs 2 NaInCl 6 :Sb can be erased/recovered through a simple water spray/drying. Whereas, the information collected from the green channel is permanently erased by moisture, which fundamentally avoids information leakage. Therefore, different encryption schemes can be designed to meet a variety of encryption requirements. The multicolor and stimuli-responsive luminescence greatly enrich the flexibility of optical information encryption, which leaps the level of security and confidentiality.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）