ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Zhanxiang Yin,Zhongyuan Liu,Yuan Yu,Cunyin Zhang,Peng Chen,Jianxun Zhao,Pan He,Xin Guo
Polycrystalline BiCuSeO is considered as a promising thermoelectric material due to its intrinsically low thermal conductivity and moderate Seebeck coefficient. However, its low electrical conductivity and coupled electron–phonon transport properties restrict the further improvement of the thermoelectric performance. In this work, Pb and Yb dopants are incorporated into BiCuSeO to substitute for Bi sites via ball milling and high-pressure and high-temperature sintering, leading to a synergistic optimization of the electron and phonon transport and improved thermoelectric performance. The carrier concentration exhibits an enhancement with increasing Pb&Yb co-doping contents. Meanwhile, the decreased carrier mobility is suppressed appropriately by coordinating with the interplay of Pb and Yb dopants on the electronic structure. Besides, Pb&Yb co-doping combined with high-pressure and high-temperature sintering introduces abundant grain boundaries, dislocations, and point defects to effectively decrease the lattice thermal conductivity by scattering phonons in a broad frequency range. Coupled with the synergistic optimization of the electrical and thermal properties, a maximum zT of 1.2 is achieved in Bi0.88Pb0.06Yb0.06CuSeO at 850 K, which significantly outperforms the majority of oxygen-containing thermoelectric materials. Our study suggests that dual doping of bivalent ions and rare-earth elements at Bi sites is an effective strategy for improving the thermoelectric performance of BiCuSeO.
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MATERIALS CHEMISTRY AND PHYSICS
·
2021
·
IF 4.094
Guangfei Qu,Junhong Zhou,Shuaiyu Liang,Yingli Li,Ping Ning,Keheng Pan,Wei Ji,Huimin Tang
In this study, thiol-functionalized multi-walled carbon nanotubes (MWCNT-SH) was synthesised using carboxy-functionalized multi-walled carbon nanotubes (MWCNT-COOH) as a precursor and 2-mercaptoethanol as a sulfur source. It was an effective adsorbent for Pb(II) removal. The SEM , TEM, FTIR, XPS , EDS , TGA and zeta potential analysis were used to characterize this adsorbent. The adsorption of Pb(II) mainly depends on the abundant functional groups on the surface of MWCNT-SH. Pb(II) adsorption experiments using MWCNT-SH and MWCNT-COOH showed that the adsorption capacity of the former was increased by approximately 30.5% compared to the latter at pH = 5. The increase in adsorption capacity was attributed to the higher adsorption activity of –SH compared to –COOH for Pb(II). The adsorption kinetics data is described well by the pseudo-second-order model, and this implies that the chemical adsorption process mainly determined the adsorption rate. The Pb(II) equilibrium data were highly consistent with the Langmuir adsorption isotherm , and the maximum adsorption capacity for Pb(II) was 144.9 mg g −1 . In addition, the adsorption was a thermonegative and spontaneous reaction. It can be verified by thermodynamic research (ΔG < 0, ΔH > 0, ΔS > 0). Finally, Pb (II) removal apply to three kinds of natural wastewater demonstrated the potential of MWCNT-SH. All the results showed that MWCNT-SH has broad application prospects in water treatment.
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iScience
·
2023
·
IF 5.8
Xuan Ding,Jiayi Liu,Hui Shi,Zhou Yi,Lei Zhou,Wei Ren,Penghui Shao,Liming Yang,Derun Zhao,Yun Wei,Xubiao Luo
Efficient and selective removal of Pb(II) from wastewater with complex matrix remains a challenging task. Porous aromatic frameworks (PAFs) with predesigned functional building blocks provide a favorable platform for the selective separation of Pb(II). Herein, the bifunctional SPAFs with the introduction of -OH and -SO 3 H were synthesized through rationally optimizing their steric hindrance. As a result, the SPAF-0.75 exhibits favorable adsorption capacity of Pb(II) (212.34 mg g −1 ), which is 22 times larger than pristine framework. Competition experiment indicates that SPAF-0.75 possess the selective removal of Pb(II) without interfering from co-existing metal ions. The removal rate of SPAF-0.75 still retain at 100% after six successive cycles. The DFT calculation illustrates that -OH and -SO 3 H are co-participate in the process of capturing Pb(II), revealing SPAF-0.75 preferred removal of Pb(II) owing to the lowest adsorption energy (Δ E ab = −3.99 eV). This study extend the understanding of the structure-property relationship and facilitate new possibilities for PAFs.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 31
·42824-42836
·
IF 7.8
Zhao Quan,Huang Tao,Xu Ou,Fu Jiali,Huang Jiaren,Zhao Yongqiang,Wang Suihao,Liu Dongxi,Chen Weixing,Zou Bingsuo
Organic–inorganic hybrid multimetal halides possess rich photophysical properties and great potential for multicolor emission and multifunctional optoelectronic applications, but their development is limited by phase separation and the difficulty of integrating multiple luminescent functions. Herein, we report a zero-dimensional Pb-In bimetallic halide, (C 9 H 20 N) 7 [InCl 4 ] 2 [Pb 3 Cl 11 ] (C 9 H 20 N + = 1-butyl-1-methylpyrrolidinium), as a structurally well-defined multimetallic crystalline platform. Under 340 nm excitation, the compound exhibits bright green emission at 518 nm with a high PLQY of 96.4%, originating from the [Pb 3 Cl 11 ] 5– cluster tri-polaron formed through phonon-assisted coupling among three [PbCl 6 ] 4– octahedra. Upon Sb 3+ introduction, an additional broadband red emission at 675 nm appears, associated with Sb 3+ -related triplet self-trapped exciton (STE) and Sb 3+ -In 3+ donor–acceptor pair (DAP), enabling excitation-dependent tunable emission from green to red. More importantly, under 365 nm excitation, the undoped crystal shows pronounced anti-thermal-quenching behavior, while the Sb 3+ -doped system exhibits temperature-responsive luminescence regulation and reversible red-orange-green thermochromism over 80–460 K. This work thus integrates efficient cluster-based green emission, Sb 3+ -induced red emission, antithermal-quenching behavior, and reversible thermochromic response in a single Pb-In multimetallic zero-dimensional crystalline platform, showing promise for solid-state lighting, optical anticounterfeiting, and information encryption.
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DOI
PubMed
高影响因子
Nature Communications
·
2026
·
IF 18.1
Xu Yuyan,Zhang Xinyue,Wan Yangyang,Qin Bingchao,Pei Jun,Liu Hong,Song Xiaoxue,Jiang Shutong,Sun Zhongti,Zhang Yuqiao,Zhang Long,Liu Yong,Yu Qian,Zhao Li-Dong,Li Shun,Zhang Jianming
Hydrogen peroxide (H 2 O 2 ) plays a crucial role in environmental remediation, chemical synthesis, and energy storage. Nevertheless, its industrial production is energy consuming with significant environmental burdens. Here we show a proof-of-concept thermoelectrocatalytic strategy for H 2 O 2 production directly from seawater, driven solely by low-grade waste heat. A low-temperature thermoelectric (TE) material, Na- and Pb-codoped SnSe, is designed as a catalyst that enables efficient H 2 O 2 generation under a moderate temperature gradient (Δ T ). This system achieves an H 2 O 2 production rate of 6.1 mmol g −1 h −1 from seawater under Δ T = 120 K, which is competitive with the representative photocatalytic systems. Experimental and theoretical analyses reveal that Na/Pb-codoping improves the TE properties, promotes charge carrier migration under Δ T , and promotes the oxygen reduction reaction toward H 2 O 2 formation. The naturally formed strong electric layer at the catalyst-seawater interface further promotes both reaction kinetics and thermodynamic driving forces. Our finding provides a sustainable route for H 2 O 2 production from seawater using waste heat and demonstrates great potential of TE-catalysis for waste heat utilization.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xiaotong Lu,Xiaojiao Hou,Peining Han,Yuhang Li,Zhicheng Pan,Tieqiang Wang,Fanbao Meng,Yu Fu
Fe 3+ -dual-driven interfacial synthesis grows PB and PmPD simultaneously • Soft spraying enables one-step and eco-friendly MMM fabrication • PB/PmPD MMM combines photothermal evaporation and membrane separation • MMM realizes molecular-level integration for scalable fabrication A strategy combining soft spraying with Fe 3+ -dual-driven interfacial synthesis is developed to fabricate PB/PmPD mixed matrix membranes (MMMs). Fe 3+ serves dual roles as a coordination center for Prussian blue formation and an oxidant to initiate m -phenylenediamine polymerization (mPD), enabling synchronous generation and in-situ compositing of PB nanoparticles and PmPD matrix at the gas–liquid interface. This synergy enhances structural integrity and interfacial compatibility. The PB/PmPD MMM exhibits excellent performance in both photothermal evaporation and permeation separation. Under solar irradiation, it achieves an evaporation rate of 2.16 kg·m −2 ·h −1 and effectively purifies seawater and wastewater with removal rates exceeding 99%. In terms of membrane separation, it demonstrates over 98% rejection for various dyes, along with water permeance ranging from 89.41 to 117.17 LMH/bar, while exhibiting excellent antifouling and antibacterial properties. This work offers a versatile strategy for constructing multifunctional MMMs integrating evaporation and separation. Download: Download high-res image (153KB) Download: Download full-size image
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MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Han Zhang,Xuefeng Bai,Hua Ji,Xiaochuan Yu,Rui Li,Sijia Sun,Guocheng Lv,Hao Ding
Lead ions (Pb(Ⅱ)) cause serious environmental pollution and endanger human health and it is urgent to carry out efficient treatment. Herein, a strategy was proposed to enhance the immobilization and removal of Pb(Ⅱ) (including trace Pb(Ⅱ)) from water by coating SiO 2 on the surface of CaCO 3 to prepare CaCO 3 @SiO 2 composites using the carbonation method. The findings revealed that SiO 2 coating exhibits strong activation effects on CaCO 3 . The SiO 2 coating (loaded at 8.62 wt%) increased CaCO 3 specific surface area by over 20-fold, confirming its activating effect. The maximum immobilization amount of Pb(Ⅱ) by CaCO 3 @SiO 2 reached 3354 mg/g (over twice that of CaCO 3 ), and the removal rate of trace Pb(Ⅱ) (100 μg/L) was 99.5 %. The residual Pb(Ⅱ) concentration (5.5 μg/L) complies with WHO drinking water standard. Furthermore, CaCO 3 @SiO 2 showed selective removal of Pb(II), maintaining an 87 % percentage removal after 5 cycles of recycling. This study quantified dual mechanisms: surface adsorption-complexation dominated at low concentrations (100 % at 10 mg/L), while dissolution-precipitation plays the primary role at high concentrations (99.39 % at 500 mg/L), the removal mechanism of CaCO 3 @SiO 2 was greatly affected by the initial concentration of Pb(Ⅱ), therefore, the accurate contribution rate of each mechanism at different concentrations was calculated. The synergistic effect of CaCO 3 , its surface coated SiO 2, and the rate of increase in the system pH value was found to be the fundamental reason for the significant increase in the immobilization of Pb(Ⅱ) by CaCO 3 @SiO 2 .
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高影响因子
CERAMICS INTERNATIONAL
·
2015
·Vol. 41
·期 5
·6676-6682
·
IF 2.605
Pei Peng,Ya-Ya Hu,Yong Liu,Shi Chen,Jing Shi,Rui Xiong,Yue Zhang
Magnetoelectric (ME) ceramic composites of CoFe 2 O 4 (CFO) and Pb(Zr,Ti)O 3 (PZT) with varied composition ratios were sintered using a spark plasma sintering (SPS) method. The characterization of the ceramic compositions and morphologies revealed an even distribution of the CFO and PZT phases. Physical property measurements showed that when the CFO mass percent increased from 8% to 15%, the piezoelectric constant and dielectric constant decreased monotonously, while the saturation magnetization and dielectric loss were enhanced. It was determined that a CFO mass percent of 10% or less resulted in a significant change of the polarization behaviour and a clear enhancement of the ME conversion voltage coefficient ( α E ) with an applied magnetic field . In contrast, CFO mass percentages greater than 10% had a reduced α E , and their polarization behaviour was not influenced by an applied magnetic field. With an increasing proportion of CFO in the composite, the α E first increased and then decreased. The maximum value of the α E indicated an optimal proportion of CFO (10%), which is attributed to a competition between the improved magnetostriction and deteriorating electric behaviour in the composite with the addition of CFO.
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Desalination and Water Treatment
·
2024
·
IF 1
Xin Wen,Zhanfang Cao,Jing Wang,Shuai Wang,Hong Zhong
A novel tri-isopropanolamine functionalized graphene oxide (TI-GO) adsorbent was synthesized by one-step reaction at 358K. Then the prepared TI-GO was characterized by SEM-EDS, FTIR, Raman spectra, TG, BET and XPS. The characterization results indicated the TI-GO has been synthesized successfully and it interact with Pb(II) ions through its nitrogen and oxygen-containing functional groups. Batch adsorption experiments were applied to evaluate the optimized conditions of adsorption. The results indicated that the TI-GO can reach equilibrium adsorption in 30 min and get maximum adsorption capacity at 293 K, pH 5.0. Besides, the adsorption kinetic and adsorption isotherm research indicated that the adsorption of TI-GO fit pseudo-second-order (PSO) kinetic and Langmuir adsorption isotherm model. In addition, the maximum adsorption capacity evaluated by Langmuir adsorption isotherm equation is 1478 mg/g.
研究领域:
环境科学
·
材料科学
·
化学工程
·
环境污染治理
·
吸附材料
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2019
·
IF 4.561
Guoli Chen,Kun Song,Xiaoming Huang,Wenbo Wang
Titanium dioxide (TiO 2 ) colloid was synthesized by using tetrabutyl titanate . TiO 2 (KH-570) intermediate was prepared by etherification reaction of TiO 2 colloid and KH-570. The CS-GMA intermediate was prepared by ring-opening reaction of chitosan (CS) and glycidyl methacrylate (GMA). Finally, copolymerization two intermediates obtain a new adsorbent, TiO 2 (KH-570)-g-(CS-GMA). The results manifest that the maximum adsorption amounts of toluene and Pb(II) are 56.62 mg/g and 623.56 mg/g, respectively. The adsorption of TiO 2 (KH-570)-g-(CS-GMA) adsorbent for toluene and Pb(II) accord with the pseudo-second-order kinetics mechanism and Langmuir equation, indicate that the TiO 2 (KH-570)-g-(CS-GMA) adsorbent has better adsorption effect on toluene and Pb(II).
研究领域:
环境科学
·
材料科学
·
化学工程
·
污染控制
·
吸附技术
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Yanfei Liu,Juan Li,Shaowen Huang,Dingbo Shu,Yanru Shan,Zhuohao Qiao,Xiaogang Yin
To address the heavy metal water pollution caused by industrial wastewater discharge, a novel hydrogel adsorbent was prepared using organic matter derived from distiller's grains (DGS), a by-product of the brewing industry, as the main raw material and carboxymethyl chitosan (CMCS) as the modifier. Characterization results revealed that CMCS converted the adsorbent into a three-dimensional macroporous structure while enhancing its highly selective adsorption performance for Pb(II) and Cd(II), with adsorption capacities reaching as high as 825.3 mg·g −1 and 644.3 mg·g −1 , respectively, and removal efficiencies up to 99.4% and 95.2% within 10 min. The adsorption process fitted well with the pseudo-second-order adsorption kinetic model (R 2 > 0.996) and the Langmuir isotherm model, indicating that the adsorption was dominated by chemical adsorption. Mechanistic analysis revealed that the hydrogel formed complexation and coordination with Pb(II) and Cd(II) via the lone pair electrons of O and N atoms, and combined with hydrogen bonding and electrostatic attraction to achieve synergistic adsorption. Furthermore, adsorption experiments on industrial wastewater using this adsorbent demonstrated that it maintained excellent adsorption performance even after six adsorption-desorption cycles, and achieved a degradation rate of 51.3% after 28 days. The synthesis of this highly efficient adsorbent not only realizes the functional modification and high-value utilization of DGS but also provides a green solution for wastewater remediation, exhibiting great application potential.
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PubMed
高影响因子
CRYSTENGCOMM
·
2019
·Vol. 21
·期 27
·4085-4091
·
IF 3.382
Xiaohua Cheng,Lin Jing,Ye Yuan,Songjie Du,Qing Yao,Jie Zhang,Jianxu Ding,Tianliang Zhou
Due to their excellent luminescent properties such as high stability, narrow band emission, and strong luminescence, hybrid organic–inorganic lead perovskites have great potential for application in optoelectronic devices. Compared to their conventional 3D counterparts, 2D perovskites exhibit enhanced moisture stability. Moreover, with the enhancement of exciton binding energy and limitation of charge carriers, 2D layered perovskites are considered ideal candidate materials for efficient light-emitting diodes (LEDs). However, hybrid organic–inorganic lead perovskites contain highly toxic Pb, which is considered as a major environmental pollutant and health hazard. Therefore, the further larger-scale applications are limited. Thus, exploiting the impressive properties and practical applications of 2D layered structure Pb-free hybrid organic–inorganic perovskites in the LED field is necessary. In the present work, a centimeter-size square 2D layered Pb-free (CH3NH3)2MnCl4 single crystal was grown successfully with diverse crystal morphologies from two different solutions. This material could be excited by light in different wavelength bands. The main peak in its emission spectrum is located at 608 nm and the full width at half maximum (FWHM) is 72 nm. Furthermore, we prepared an LED using the (CH3NH3)2MnCl4 single crystal, which exhibited good luminescence properties, emitting obvious red light with a QE of 2.4% upon excitation at 417 nm and used for white light illumination.
研究领域:
材料科学
·
光电子学
·
无机化学
·
晶体生长
·
发光二极管
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