APPLIED ORGANOMETALLIC CHEMISTRY
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2025
·Vol. 39
·期 11
·e70410
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IF 0
Li-Li Xue,Qing He,Zhuang-Zhuang Li,Jia-Qi Wu,Si-Wen Li,Jian-She Zhao
The global demand for sustainable and cleaner energy sources has driven more research on advanced desulfurization technologies from fossil fuels, in which oxidative deep desulfurization has become a hotspot. In this paper, the nucleation-controlled method was used to realize the uniform growth of porous amino metal–organic framework (MOF) on green-friendly cotton fibers (CF), and the pore structure and amino functional groups on MOF were beneficial to firmly anchor of P-Mo-W polyoxometalate (POM) active species. Thus, a kind of new supported P-Mo-W POM composite catalyst (POM@MIL-101@CF) has been obtained and exhibited excellent oxidative desulfurization performance for fuels. Under the optimal reaction conditions: T = 60°C, O/S = 7, two pieces of catalyst, the ODS efficiency of 0.5-POM@MIL-101@CF for DBT could reach 99.57%, with slight changes after more than 5 reuse times. Meanwhile, EPR experiments proved that ·O 2 − and ·OH radicals were both the main reactive substances, which promoted the remarkable catalytic desulfurization performance of POM@MIL-101@CF. Therefore, this kind of supported POM catalyst is simple to prepare and green-friendly in raw materials, as well as the strong binding between POM and CF with the bridging effects of MIL-101 makes it better adapt to the needs of actual industrial production and has a broad application prospect in practical desulfurization applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2016
·
IF 3.014
Wei Chen,Ting Huang,Tian-Yu Liu,Guo-Rong Duan,Xu-Jie Yang,Xiao-Heng Liu
Highly-efficient visible light driven Zn 0.2 Cd 0.8 S/P-C 3 N 4 heterostructure were successfully synthesized via ultrasound-assisted growth route. The as-prepared Zn 0.2 Cd 0.8 S/P-C 3 N 4 nanocomposites consist of mesoporous P-C 3 N 4 nanosheets immobilized with homogeneously dispersed Zn 0.2 Cd 0.8 S NPs. The photocatalytic applications including photoreduction of 4-nitroaniline (4-NA) and water splitting were employed to evaluate their photocatalytic activities of prepared samples. The intimate interfacial contact between the Zn 0.2 Cd 0.8 S nanoparticles and the P-C 3 N 4 nanosheets endows these nanocomposite photocatalysts with superior visible light photocatalytic activity for both the 4-NA reduction and water splitting in comparison with pure Zn 0.2 Cd 0.8 S NPs and bare P-C 3 N 4 NSs, especially Zn 0.2 Cd 0.8 S/P-C 3 N 4 -80. In addition, we found that Zn 0.2 Cd 0.8 S/P-C 3 N 4 -80 sample possesses excellent stability towards selective reduction of 4-NA to 4-phenylenediamine (4-PDA) during the photocatalytic running experiments. We hope that our current research on the facile fabrication and applications of Zn 0.2 Cd 0.8 S/P-C 3 N 4 samples can provide some new insights in the design, synthesis and application of P-C 3 N 4 based nanocomposites.
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Journal of Materials Chemistry C
·
2025
·
IF 5.1
Runji Yang,Weiqing Guo,Qingxi Jin,Yaohua Xu,Feng Wei,Jiliang Zhang
Sensitive, selective and low-cost sensors for nitric oxide (NO) detection are significant due to its toxicity. This report investigates the tunable sensing behavior in chemiresistive NO sensors using α-Fe2O3 nanoparticles as sensing materials. The sensor exhibits a distinctive sensing characteristic with a reversible transition from p- to n-type sensing behavior, which is regulated by working temperature. The temperature-modulated (200–400 °C) and concentration-dependent (100–1000 ppm) p–n transition diagrams are constructed, while the gas sensing behaviors can be well described using a two-isotherm model based on Langmuir adsorption theory. Detailed reactions between NO and α-Fe2O3 at each temperature are proposed, and the corresponding activation energy is calculated. It is demonstrated that the p–n transition mechanism during NO detection is modulated by the dynamic variations in the α-Fe2O3–NO interaction. The p–n transition observed as a specific behavior in NO gas sensing can provide a novel approach to enhance the recognition capability for NO gas.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Chunmu Wang,Chenxi Pang,Jiahua Lu,Jie Zhu,Jujun Ruan
Decapsulation is the first step of recycling waste crystalline silicon photovoltaic (PV) panels. Nowadays, wet decapsulation has been a mainstream decapsulation method. It delivers high-purity decapsulation products and enables full-component recycling of laminates. However, current wet decapsulation technologies suffer from several limitations, including excessively high solvent concentrations and significant environmental risks. Moreover, critical issues such as ineffective decapsulation at low solvent concentrations, undefined waste liquid treatment methods, and uncontrollable decapsulation effect remain to be resolved. In order to solve these problems, this study used p-toluene sulfonic acid (PTSA) and hydrogen peroxide (H 2 O 2 ) to strengthen terpinolene efficiently decapsulating waste crystalline silicon PV laminates. PTSA and H₂O₂ were shown to strengthen terpinolene's decapsulation efficiency, achieving 100 % decapsulation rates even at low terpinolene concentrations. A positive correlation was observed between terpinolene concentration and the degree of silicon layer fragmentation. This paper analyzed the characteristics of the decapsulated waste liquid, such as high calorific value and low metal dissolution capacity. The feasibility of waste liquid combustion treatment was evaluated for the first time from the perspective of environmental impact. Meanwhile, the mechanism by which auxiliary reagents (PTSA and H 2 O 2 ) work in synergy to strengthen the decapsulation of terpinolene was deeply analyzed: PTSA provided acidic conditions, and H 2 O 2 act as a free radical initiator. The two worked together to activate terpinolene to generate more terpinolene free radicals (Terp·). Terp· attacked the main chain and bridging of ethylene-vinyl acetate polymer (EVA), leading to chain breaks and the decapsulation effect. This research provides a theoretical basis for the wet decapsulation of waste crystalline silicon PV laminates, links laboratory innovation with practical application, and offers a sustainable approach for industrial-scale PV recycling. Synopsis The synergistic effect of PTSA and H 2 O 2 strengthens the terpinolene to completely decapsulate the waste crystalline silicon photovoltaic laminates.
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Solar RRL
·
2023
·Vol. 7
·期 10
·2300023
·
IF 7.9
Yaju Wei,Guoqiang Yu,Guohui Luo,Wang Fu,Wuqi Liu,Tao Wang,Haonan Xu,Xiaoping Wu,Lingbo Xu,Ping Lin,Xiaodong Zhu,Xuegong Yu,Peng Wang,Can Cui
Molybdenum oxide (MoO 3− x , x < 3) has been successfully used as an efficient hole-selective contact material for crystalline silicon heterojunction solar cells. The carrier transport capability strongly depends on its work function, that is, oxygen vacancies; however, there are lack of effective methods to modulate the multiple oxidation states. Herein, the oxidation states of solution-processed MoO 3− x by doping Nb 5+ to improve its hole-selective contact performance with silicon are tuned. With the optimum doping concentration of 5%, both the reduced Mo 5+ and oxygen vacancies increase, resulting in a decrease in the contact resistivity between the MoO 3− x film and p -type silicon from 161.1 to 62.9 mΩ·cm 2 and an increase of the effective carrier lifetime from 165.4 to 391.0 μs simultaneously. Similarly, the doping of Ta 5+ or V 5+ in MoO 3− x improves the passivated contact performance with silicon, while the former increases the concentration of oxygen vacancies and the latter reduces it. The solar cell with the structure of Ag/MoO 3− x :Nb/ p -Si exhibits a conversion efficiency of 18.37%, which is the highest so far reported for the solution-processed MoO 3− x /silicon heterojunction. This work demonstrates a feasible strategy of tuning hole selectivity in MoO 3− x by doping for high-efficiency solar cells and other optoelectronic device applications.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yuan-li Wang,Tong-hui Yang,Song Yue,Hang-bo Zheng,Xiao-pan Liu,Peng-zhao Gao,Hang Qin,Han-ning Xiao
Composition optimization, structural design, and introduction of external magnetic fields into the catalytic process can remarkably improve the oxygen evolution reaction (OER) performance of a catalyst. NiFe2O4@(Ni, Fe)S/P materials with a heterogeneous core–shell structure were prepared by the sulfide/phosphorus method based on spinel-structured NiFe2O4 nanomicrospheres. After the sulfide/phosphorus treatment, not only the intrinsic activity of the material and the active surface area were increased but also the charge transfer resistance was reduced due to the internal electric field. The overpotential of NiFe2O4@(Ni, Fe)P at 10 mA cm–2 (iR correction), Tafel slope, and charge transfer resistance were 261 mV, 42 mV dec–1, and 3.163 Ω, respectively. With an alternating magnetic field, the overpotential of NiFe2O4@(Ni, Fe)P at 10 mA cm–2 (without iR correction) declined by 45.5% from 323 mV (0 mT) to 176 mV (4.320 mT). Such enhancement of performance is primarily accounted for the enrichment of the reactive ion OH– on the electrode surface induced by the inductive electric potential derived from the Faraday induction effect of the AMF. This condition increased the electrode potential and thus the charge transfer rate on the one hand and weakened the diffusion of the active substance from the electrolyte to the electrode surface on the other hand. The OER process was dominantly controlled by the charge transfer process under low current conditions. A fast charge transfer rate boosted the OER performance of the catalyst. At high currents, diffusion exerted a significant effect on the OER process and low OH– diffusion rates would lead to a decrease in the OER performance of the catalyst.
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Guiyang Yu,Ke Gong,Chuanwang Xing,Lan Hu,Haibin Huang,Lejie Gao,Debao Wang,Xiyou Li
Organic semiconductor under photoexcitation could generate abundant strong-binding Frenkel excitons and inevitably suffer from low dissociation efficiency (<1%) and poor mobility ability, which severely suppresses the efficient utilization of photogenerated charges and corresponding activity. Herein, a dual P-doping strategy is proposed in bay and corner sites implanted polymeric carbon nitride (PCN-D) for visible-driven H 2 O 2 production. The dual P doping breaks localized electron state around original symmetric heptazine units and weakens the binding energy between electrons and holes, increasing dissociation efficiency to reach 11.9% with 20-fold improvement. In addition, the conductivity ability of PCN-D, including formed carrier charge concentration and mobility, achieves 13-fold and 7-fold improvement, which facilitates the charge transfer and separation. The proposed dual doped-P-site strategy, with the blessing of porous structure, provides plentiful active center for effective adsorption and activation of O 2 molecule, further accelerating reaction progress and achieving six-times increase of photocatalytic H 2 O 2 production rate. This work provides in-depth insight into the importance of dual P-doping to optimize kinetic behavior of photogenerated charges and opens an avenue to the multiscale doping-modulation of semiconductor with high efficiency solar energy conversion.
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Energy Storage Materials
·
2023
·
IF 20.4
Chengyao Zhao,Yiming Lin,Qiaoyan Lin,Qi Liu,Yujing Liu,Zhongqiu Liu,Anguo Ying
Aqueous zinc-ion hybrid capacitors (ZIHCs) are a promising new type of energy storage device, but there is a plight that the unsatisfactory Zn 2+ storage capability of carbonaceous cathodes limits further application. To address this issue, desolvation strategy is employed to tailor the solvation sheath of Zn 2+ in the ultra-micropores (0.59 nm) nanospheres , where H 3 PO 4 acts as phosphorus source for forming C-P bonds and enhancing C=O bonds to further reduce the desolvation energy barrier. In practical application, a quasi-solid-state flexible ZIHC is constructed, which provides a battery-level energy density (293.4 Wh kg −1 ) at a power density (180 W kg − 1 ) and a remarkable capacity retention of 93.4 % after 10 000 cycles. Electrochemical analyses, DFT calculations and structural characterization reveal that ultra-microporous is proved to be a prerequisite for C-P/C=O that are expected to further deplete solvent molecules within a Zn 2+ solvation sheath. Also, the coupling effect between the strong adsorption of Zn 2+ by C-P/C=O and the hydrophobic effect of C-P play an important role in facilitating desolvation process. This work creates a precedent for the application of ultra-microporous carbon materials in ZHICs and provides a brand-new approach for breaking the bottleneck of the low energy density and poor lifespan of ZHICs.
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OPTICAL MATERIALS
·
2023
·
IF 3.9
Jia Li,Jianfeng Zheng,Xingmin Liu,Yatao Yang,Xiaojin Han,Zhanggen Huang
Photoelectrochemical reduction of CO 2 with H 2 O into syngas (H 2 /CO) is considered as an important platform to organic chemicals, which can effectively alleviate the greenhouse effect and energy dependence. We synthesized SnO/g-C 3 N 4 p-n junction catalyst with matched energy band, which shows enhanced light absorption performance and photogenerated charge separation efficiency. The M − S plots verified the successful construction of p-n type heterojunctions , and the investigations of LSV , EIS , PL and transient photocurrents test indicate that the recombination rate of charge is well inhibited by the design of p-n heterojunction. In this work, the syngas derived from PEC reduction of CO 2 and H 2 O is achieved by the SnO/g-C 3 N 4 photocathode with a total FE of 70% at an external bias of −1.5 V. In addition, the H 2 /CO molar ratio can be tuned from 1.5 to 10 by controlling the applied voltage. The study may inspire a new thought for the design of high-performance photoelectric catalyst and a promising strategy for PEC CO 2 reduction to valuable carbon-based compounds.
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ChemistrySelect
·
2023
·Vol. 8
·期 16
·e202300902
·
IF 2.1
Panli Liu,Shengbin Shi,Ruiping Wei,Lijing Gao,Jin Zhang,Guomin Xiao
Graphical P-Zr-SBA-15 catalyst with bifunctional acidity was synthesized by introducing Zr 4+ into the mesoporous material SBA-15 structure for intra skeleton modification, and then impregnated with phosphoric acid solution to modify the outer skeleton. The catalyst exhibits excellent catalytic activity, good thermal stability, and recoverability in the preparation of furfural. A series of bifunctional P-Zr-SBA-15 catalysts with Lewis acid and Brønsted acid sites were prepared by modifying mesoporous material SBA-15 with Zr 4+ and phosphate group, which were used in the conversion of xylose and xylan into furfural. The structure and acidic characteristics of the catalyst were analyzed by X-ray diffraction, Fourier transform infrared spectroscopy, N 2 adsorption desorption, scanning/transmission electron microscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis, NH 3 temperature programmed desorption, and pyridine adsorption infrared spectroscopy. The effects of different process parameters on the catalytic performance of the catalyst were studied. when using the xylose and xylan as substrates, the furfural yield were 80.3 % and 68.8 % under the optimal conditions in the H 2 O (NaCl) /toluene (3/3 mL) biphasic solvent system, respectively, and 52.5 % furfural yield was obtained using xylose as substrate in aqueous system. In addition, the catalyst has good thermal stability and easy recovery in the recycling experiment.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 32
·e54261
·
IF 3
Wei Wang,Bingnan Cheng,Wuwei Feng,Bin He,Shuo Liu
With the energy shortage and the increasing awareness of environmental protection, piezoelectric nanogenerator (PENG) has been widely studied in recent years. Polyvinylidene fluoride hexafluoropropylene (P(VDF-HFP)) is an ideal matrix material because of its piezoelectricity, flexibility, and toughness. Herein, a composite film of carbon nanotubes (CNTs), Ba 0.85 Ca 0.15 Zr 0.10 Ti 0.90 O 3 (BCZT), and P(VDF-HFP) (CNTs/BCZT/P(VDF-HFP)) were prepared via the tape casting method. Adding BCZT increased the polar β-phase in P(VDF-HFP), reaching a maximum when 40 wt% BCZT was incorporated. Adding CNTs to the matrix provides a conductive path inside the composite. The CNTs/BCZT/P(VDF-HFP) composite film demonstrated optimal electrical properties when 0.3 wt% CNTs is doped, with the open circuit voltage increased from 22 to 30 V and the short circuit current increased from 3 to 5.9 μA compared with the undoped sample. The output performance of the PENG was further improved with a three-layer folded structure, achieving an open circuit voltage of 40 V and a maximum power density of 31.5 mW m −2 , which easily lit six light-emitting diodes.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yangyang Shi,Fengyi Yang,Li Tao
Developing electrocatalysts based on transition-metal carbides that can be utilized for commercial water splitting is a challenging endeavor. To address this challenge, we employed a novel approach that merged phase-inversion tape-casting and sintering, subsequently implementing a simple and efficient electrodeposition process, to synthesize Ni-activated and Ni–P-activated titanium carbide (Ni/TiC, Ni–P/TiC) ceramic electrodes as water splitting catalytic cathodes and anodes. These self-supported Ni/TiC and Ni–P/TiC electrodes are binder-free with abundant finger-like pores, which contribute to the formation of highly conductive skeleton and more exposed active sites for direct water splitting. These catalysts exhibit outstanding performance, superior to many reported bifunctional nickel-based catalysts supported on other substrates. Moreover, the exceptional electrocatalytic performance of the Ni/TiC and Ni–P/TiC catalysts is attributed to the synergistic effect between Ni oxides (phosphides) and TiC, as revealed by density functional theory (DFT) calculations. This self-template strategy paves the way for fabricating industrially applicable electrodes to generate hydrogen and oxygen through water splitting.
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高影响因子
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