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Plasmonic tandem heterojunctions enable high-efficiency charge transfer for broad spectrum photocatalytic hydrogen production

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Journal of Energy Chemistry 2025年第1期100卷 710-720页

作者： Wenxuan Chen Xiu-Qing Qiao Guo Hui Bojing Sun Dongfang Hou Meidi Wang Xueqian Wu Tao Wu Dong-Sheng Li college of Materials and chemical Engineering Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials China Three Gorges University Hubei Three Gorges Laboratory college of Chemistry and Materials Science and Guangdong Provincial Key Laboratory of Supramolecular Coordination Chemistry Jinan University

Rational engineering of semiconductor photocatalysts for efficient hydrogen production is of great significance but still challenging,primarily due to the limitations in charge transfer ***,a fascinating plasmonic tandem heterojunction with the hc-CdS/Mo2C@C heterostructure is aimfully prepared for effectively promoting the charge separation kinetics of the CdS photocatalyst via the synergistic strategy of phase junction,Schottky junction,and photothermal *** difference in atomic configuration between cubic-CdS （c-CdS） and hexagonal-CdS （h-CdS） leads to effective charge separation through a typical Ⅱ charge transfer mechanism,and plasmonic Schottky junction further extracts the electrons in the hc-CdS phase junction to realize gradient charge ***,the photothermal effect of Mo2C@C helps to expand the light absorption,accelerate charge transfer kinetics,and reduce the hydrogen evolution energy *** carbon layer provides a fast channel for charge transfer and protects the photocatalyst from *** a result,the optimized hc-CMC photocatalyst exhibits a significantly high photocatalytic H2production activity of 28.63 mmol/g/h and apparent quantum efficiency of 61.8%,surpassing most of the reported *** study provides a feasible strategy to enhance the charge transfer kinetics and photocatalytic activity of CdS by constructing plasmonic tandem heterogeneous junctions.

关键词： Cadmium sulfide

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Triboelectric properties of ilmenite and quartz minerals and investigation of triboelectric separation of ilmenite ore

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International Journal of Mining Science and Technology 2018年第2期28卷 223-230页

作者： Yang Xing Wang Haifeng Peng Zhen Hao Juan Zhang Guangwen Xie Weining He Yaqun Key Laboratory of coal Processing and Efficient Utilization China University of Mining and TechnologyMinistry of EducationXuzhou 221116China School of chemical Engineering and Technology China University of Mining&TechnologyXuzhou 221116China jinan yuxing chemical co.ltd. Jinan 250119China Advanced Analysis&computation Center China University of Mining&TechnologyXuzhou 221116China

Triboelectric separation, as an entirely dry technology, is a prospective method to process fine *** aim of this paper is to investigate the performance of triboelectric separation of ilmenite and quartz minerals in a lab unit and to get ready for the separation of ilmenite ore. A tribocharge measurement system was used to test the triboelectric properties of ilmenite and quartz particles with tribochargers respectively made of PVC, PPR, PMMA, Teflon, copper, stainless steel and quartz glass. The results show that the ilmenite particles charged positively while quartz charged negatively when tribocharged with PVC tribocharger. The mixture of 12% ilmenite and 88% quartz was prepared for the triboelectric separation. The recovery of ilmenite increases with the increase of airflow rate, decreases with the increasing feed rate, and grows up firstly and then decreases with the increasing voltage. A maximum ilmenite recovery of 51.71% with ilmenite content 32.72% was obtained at 40 m^3/h airflow rate, 6 g/s feed rate and 20 kV voltage. According to the optimal parameters of the separation of ilmenite and quartz mixture,fine ilmenite ore with 7.55% Ti content was beneficiated using the unit and the Ti content increased to 12.32% in concentrate product.

关键词： Triboelectric separation Tribocharge Ilmenite Quartz Ilmenite ore

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Reinforcement of the two-stage leaching of laterite ores using surfactants

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Frontiers of chemical Science and Engineering 2021年第3期15卷 562-570页

作者： Peiyu Zhang Hairui Wang Jingcheng Hao Jiwei Cui School of Chemistry and chemical Engineering Shandong UniversityJinan 250100China Key Laboratory of colloid and Interface Chemistry of the Ministry of Education Shandong UniversityJinan 250100China Shandong Environmental Protection Industry Group co.ltd. Jinan 250000China

A two-stage leaching process,namely,highpressure acid leaching-atmospheric acid leaching,was used to treat laterite ores under mild *** leaching ratio of Ni was low because of adsorption and incomplete *** this work,surfactants were used as additives to boost the leaching ratio of *** effect of surfactant type(cationic,anionic,and nonionic surfactants)on the leaching ratio of Ni was *** results showed that stearyl trimethyl ammonium chloride(STAC)apparently increased the leaching ratios of valuable *** variation in the physicochemical properties of the lixiviant and the residue improved the leaching ratio of Ni in the presence of *** analysis indicated that the leaching process was controlled by chemical reaction.

关键词： laterite ore Ni surfactant acid leaching

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Synthesis,Crystal Structure and Antibacterial Activity of(E)-N^1,N^4-Bis(2,3,4-trimethoxy-6-methylbenzylidene)butane-1,4-diamine

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Chinese Journal of Structural Chemistry 2009年第5期28卷 628-630页

作者：梁足培李建孔凡亭林翠花台西市 Department of Chemistry and chemical Engineering Weifang UniversityWeifang 261061 China jinan chemical Fertilizer Plant co. LtdJinan 250101 China

The title compound （E）-N1,N4-bis（2,3,4-trimethoxy-6-methylbenzylidene） butane- 1,4- diamine （C26H36N2O6, Mr = 472.57） was synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The crystal belongs to triclinic, space group C2/c with a = 36.102（4）, b = 5.6620（11）, c = 13.015（2）A,β = 105.491 （2）°, V = 2563.7（7）A3, Z = 4, Dc = 1.224 g/cm3, 2 = 0.71073 A,μ（MoKα） = 0.087 mm^-1, F（000） = 1016, the final R = 0.0456 and wR = 0.1257 for 2255 observed reflections with I 〉 2σ（I）. X-ray diffraction analysis reveals that the molecule adopts an E configuration about the central C=N functional bond. The phenyl rings of two 2,3,4-trimethoxy-6-methylbenzaldehyde groups are parallel by symmetry. The molecules are linked through π-π and C-H…π stacking interactions and C-H…O hydrogen bonding interactions. The title compound possesses moderate antibacterial activity.

关键词： synthesis crystal structure antibacterial activity

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Synthesis,Crystal Structure and Antibacterial Activity of (2E,3E)-N^1,N^2-Bis(2,3,4-trimethoxy-6-methylbenzylidene)ethane-1,2-diamine

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Chinese Journal of Structural Chemistry 2009年第5期28卷 577-579页

作者：李建梁足培孔凡亭张慧台西市 Department of Chemistry and chemical Engineering Weifang UniversityWeifang 261061 China jinan chemical Fertilizer Plant co. Ltd.Jinan 250101 China

The title compound （2E,3E）-N1,N2-bis（2,3,4-trimethoxy-6-methylbenzylidene）- ethane-l,2-diamine （C24H32N2O6, Mr = 444.52） was synthesized and characterized by elemental analysis, IR spectra and single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P2/c, with a = 8.5480（10）, b = 9.3710（12）, c = 15.280（2）A, β = 90.780（2）°, V= 1223.9（3）A3, Z = 2, Dc= 1.206 g/cm3, 2 = 0.71073A,μ（MoKa） = 0.087 mm^-1, F（000） = 476, the final R = 0.0680 and wR = 0.1450 for 2144 observed reflections with I 〉 2σ（I）. X-ray diffraction analysis reveals that the molecule adopts an E configuration about the central C=N functional bond. The phenyl rings of two 2,3,4-trimethoxy-6-methylbenzaldehyde groups are symmetrically parallel. The molecules are linked through C-H…O hydrogen bonding interactions. The title compound possesses moderate antibacterial activity.

关键词： synthesis crystal structure antibacterial activity

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Application of Rare Earth Oxides in Diesel Exhaust Purification Catalysts

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Journal of Rare Earths 2004年第Z1期22卷 194-196页

作者： Zhang Zhaoliang Yu Pengfei Wang Shilong Li Chunfeng Dai Hua college of Chemistry and chemical Engineering Jinan University Jinan 250022 China Hainan Liuhe Enviromental Protection Catalysts co. ltd. Jinpan Industrial Development Zone Haikou 570216 China College of Chemistry and Chemical Engineering Jinan University Jinan 250022 China College of Chemistry and Chemical Engineering Jinan University Jinan 250022 China College of Chemistry and Chemical Engineering Jinan University Jinan 250022 China Hainan Liuhe Enviromental Protection Catalysts Co. Ltd.Jinpan Industrial Development Zone Haikou 570216 China

Diesel oxide catalysts and soot combustion catalysts were reported in this *** former was manufactured in mass last year, and enhanced performance is under development *** later is screened out and further research is under *** best soot combustion catalyst could ignite soot combustion even at 350 ℃, which is within the range of temperatures reached in diesel exhaust, and shows the catalytic combustion velocity nearly one time faster compared with non-catalytic combustion of soot, which is of benefit to rapid regeneration of diesel particulate filter, thus it might be an excellent practicable catalyst.

关键词： diesel oxidation catalyst soot combustion catalyst perovskite rare earths

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Recent Progress and Regulation Strategies of Layered Materials as Cathode of Aqueous Zinc-Ion Batteries

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Energy & Environmental Materials 2024年第3期7卷 14-31页

作者： Yuan Yuan Si Wu Xiaoxue Song Jin Yong Lee Baotao Kang School of Chemistry and chemical Engineering University of JinanJinan 250022China Department of Chemistry Sungkyunkwan UniversitySuwon 16419Korea Shandong Hi-Speed Engineering Test co. Ltd.Jinan 250022China

Aqueous zinc-ion batteries(ZIBs)have shown great potential in the fields of wearable devices,consumer electronics,and electric vehicles due to their high level of safety,low cost,and multiple electron *** layered cathode materials of ZIBs hold a stable structure during charge and discharge reactions owing to the ultrafast and straightforward(de)intercalation-type storage mechanism of Zn^(2+)ions in their tunable interlayer spacing and their abilities to accommodate other guest ions or ***,the challenges of inadequate energy density,dissolution of active materials,uncontrollable byproducts,increased internal pressure,and a large de-solvation penalty have been deemed an obstacle to the development of *** this review,recent strategies on the structure regulation of layered materials for aqueous zinc-ion energy storage devices are systematically ***,critical science challenges and future outlooks are proposed to guide and promote the development of advanced cathode materials for ZIBs.

关键词： layered cathode materials modifying strategies structure regulation zinc-ion batteries

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PREAPARATION OF CATIONIC LATEXES OF POLY(STYRENE-co-BUTYL ACRYLATE) AND THEIR PROPERTIES EVOLUTION IN LATEX DILUTION

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Chinese Journal of Polymer Science 2012年第2期30卷 278-286页

作者：孔祥正 college of Chemistry and chemical Engineering University of JinanJinan 250022China

Cationic latexes were prepared through emulsion copolymerization of styrene （St） and butyl acrylate （BA） with a cationic surfactant, cetyl trimethyl ammonium bromide （CTAB）. Latex properties, including particle size, size distribution, （ potential, surface tension and monomer conversion, were determined for latexes prepared with different CTAB amounts. Evolution of these properties during emulsion polymerization was followed in order to understand the mechanism of the particles formation. Results showed that both particle size and 6＂ potential were function of polymerization time and latex solids. Parallel emulsion polymerizations with cationic, anionic charged initiator and charge-free initiators were also carried out, the latex properties were determined at different polymerization time. All these results were attentively interpreted based on the mechanisms of emulsion polymerization, surfactant adsorption and latex particle stabilization.

关键词： Cationic latex Styrene Butyl acrylate Cetyl trimethyl ammonium bromide Particle size evolution.

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Enhanced visible light photoactivity of TiO_(2)/SnO_(2) films by tridoping with Y/F/Ag ions

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Journal of Rare Earths 2022年第4期40卷 616-625,I0004页

作者： Lizhu Zhao Guobao Li Fang Li Mingming Yao School of Chemistry and chemical Engineering University of JinanJinan 250022China

The Y,F,and Ag tridoped TiO_(2)/SnO_(2) composite nanocrystalline film(YFAg–TS)with prominent photocatalytic performance was prepared by the modified sol–gel method and was characterized by utilizing X-ray diffraction(XRD),differential thermal and thermogravimetric(DTA–TG)analysis,scanning electron microscopy(SEM),transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),Brunauer–Emmett–Teller(BET)method,ultraviolet–visible diffuse reflectance spectroscopy(UV–vis DRS),and photoluminescence(PL).The XRD and DTA–TG results expose that the YFAg–TS catalyst is a mixed phase consisting of anatase,rutile,and chlorargyrite,which is beneficial to improving the photocatalytic performance of TiO_(2).The SEM,TEM,and BET results disclose that the YFAg–TS film has smaller nanoparticles,higher specific surface area,and narrower pore size compared with pure TiO_(2) *** XRD and TEM results exhibit that a part of yttrium can enter the TiO_(2) lattice to induce lattice *** XPS results confirm the presence of Y^(3+)state in the YFAg–TS sample,and Y^(3+)ions can act as the trapping site of electrons to expedite the separation of electrons and *** UV–vis DRS results reveal that the YFAg–TS film has an obvious absorption edge shift and a narrower bandgap(2.70 eV)compared with pure TiO_(2) *** PL results show that the YFAg–TS film has the highest photogenerated electrons and holes separation efficiency and charges transfer efficiency among all *** photocatalytic activity of the YFAg–TS was assessed by monitoring the degradation of methyl green and formaldehyde *** results manifest that the YFAg–TS film has high stability and excellent photocatalytic *** possible synergistic photocatalytic mechanism of YFAg–TS films has been discussed in this paper.

关键词： TiO_(2)film Y/F/Ag tridoping SnO_(2)coupling Photoactivity Rare earths

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Flotation of niobite,fersmite,and ilmenorutile

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International Journal of Minerals,Metallurgy and Materials 2009年第3期16卷 249-254页

作者： Hao Ren Gui-lan Song Fei-fei Ji School of Chemistry and chemical Engineering University of Jinan Jinan 250022 China

The flotation ofniobite, fersmite, and ilmenorutile was studied using 3 collectors with various concentration and pulp pH. The collecting property of different representative collectors was investigated. Experimental results show that diphosphonic acid is an effective collector for valuable niobium-containing minerals. A flotation recovery of 90.87%-91.7% is obtained with 75 mg/L diphosphonic acid at pH 2-4. The chemical adsorption of diphosphonic acid on these 3 minerals＇ surface might lead to the high recovery efficiency of the minerals, which is proved by IR and X-ray photoelectron spectroscopy spectra.

关键词： flotation collector diphosphonic acid niobite fersmite ilmenorutile

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