CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yuzhen Zheng,Huijun Xie,Bo Sun,Jian Zhang,Wenxing Wang
A significant loss of the treatment efficiency induced by Cl − is a well-recognized drawback of the SO 4 ·− -based AOPs and various mathematical model have been established to achieve quantitative prediction of the treatment efficiency of SO 4 ·− -based AOPs at different levels of Cl − . However, the background water constituents (e.g., ammonia and dissolved organic matter (DOM)) complicate the chemistry of Cl − /SO 4 ·− system and disable these models. This study shows that the degradation of sulfamethoxazole and bisphenol A by Co 2+ /PMS process decreased with dosing Cl − at fresh water level, due to the shifted distribution of reactive species from SO 4 ·− to Cl 2 ·− , ClO · and HOCl. Besides quenching radicals, HOCl also contributed to pollutant degradation. Though ammonia alone negligibly influence the Co 2+ /PMS process, ammonia reacts with the in situ formed HOCl in the Cl − /SO 4 ·− process rapidly along with the generation of chloramine which mainly severed as radical scavenger rather than oxidant. Consequently, more severe efficiency loss of the SO 4 ·− -based AOPs occur in the copresence of ammonia and Cl − . Unexpectedly, the efficiency loss was alleviated after dosing DOM, which was attributed to the suppressed formation of chloramine. The occurrence of chlorate and disinfection by-products are not concerns in the Co 2+ /PMS process when Cl − coexists with ammonia and DOM, because of the decreased formation of HOCl. These results enhance our understanding of the complex chemistry of SO 4 ·− -based AOPs in real water and promote the progress of SO 4 ·− -based AOPs towards the niche applications in water treatment.
研究领域:
环境科学
·
水处理
·
化学工程
·
环境化学
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2025
·
IF 20.2
Yong Li,Qiming Xiao,Yun Zhao,Shu Zhao,Bin Liu
Alluaudite-type Na 2+2x Fe 2-2x (SO 4 ) 3 (NFS) compounds, as a promising polyanionic cathode material for sodium-ion batteries (SIBs), have attracted considerable attention owing to their cost-effectiveness and elevated operating voltage. Nevertheless, practical implementation of NFS has been hindered by inherent limitations including insufficient crystallinity and compromised electronic/ionic conductivity. Herein, we propose a pioneering dual-strategy integrating cation substitution with crystal engineering to synthesize Mg 2+ -doped single-crystalline NFS enveloped by flash graphene (denoted as [email protected] ). Through synchrotron radiation characterization complemented by density functional theory (DFT) simulations, we verified the preferential occupation of magnesium at the target iron site. Notably, while preserving the fundamental alluaudite framework, this strategic doping induced a band structure modulation with reduced bandgap and diminished Na⁺ diffusion barriers, synergistically enhancing charge transfer kinetics. The optimized [email protected] cathode delivers remarkable rate performance (63 mAh g -1 at 100C vs 21 mAh g -1 for the undoped counterpart) and unprecedented cyclability, retaining 92.8 % capacity after 7,000 cycles at 50C. In addition, the pillar effect of Mg 2+ in the crystal, as evidenced by in-situ XRD results, greatly inhibited the migration of Fe 3+ during cycling, maintaining the stable structure and resulting in outstanding cycling stability under drastic conditions. These findings establish a universal crystal engineering paradigm for developing high-performance polyanionic cathodes in energy storage systems.
研究领域:
材料科学
·
电化学
·
储能技术
·
纳米技术
·
固态化学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2019
·
IF 4.85
Ya-Ping Gong,Yun-Xiang Ma,Shao-Ming Ying,Jiang-Gao Mao,Fang Kong
Two new indium sulfate tellurites, namely, In2(SO4)(TeO3)(OH)2(H2O) and In3(SO4)(TeO3)2F3(H2O), were synthesized by hydrothermal method in a one-pot reaction. Their pure phase yields have been successfully optimized to 76% and 21%, respectively. In2(SO4)(TeO3)(OH)2(H2O) crystallized in centrosymmetric (CS) space group P21/n, while In3(SO4)(TeO3)2F3(H2O) formed a non-centrosymmetric (NCS) and chiral space group P212121. The CS compound features a 2D layered structure composed of 2D indium oxide layers decorated by sulfate tetrahedra and tellurite groups. The NCS compound displays a 3D network consisting of indium tellurite layers bridged by sulfate tetrahedra. Powder second harmonic generation measurements disclosed that In3(SO4)(TeO3)2F3(H2O) exhibits a weak frequency-doubling efficiency about 11% of the commercial KDP. Its powder laser damage threshold quantity was estimated to be 79.6 MW/cm2, which is about 36 times that of AGS. The two samples present wide optical band gaps of 4.86 and 4.10 eV, respectively, which were determined by Te, In, and O atoms based on density functional theory calculations.
研究领域:
无机化学
·
材料科学
·
光学
✓ 已验证
DOI
PubMed
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2021
·Vol. 647
·期 12
·1269-1276
·
IF 1.492
Jiayuan Zhang,Xiao Zhao,Yuandong Wu,Dajiang Mei,Shaoguo Wen,Thomas Doert
Two new antimony (III) tellurite sulfates [Sb 2 (TeO 4 )](SO 4 ) ( 1 ) and [Sb 2 (TeO 3 ) 2 ](SO 4 ) ( 2 ) were successfully synthesized through a conventional hydrothermal method and their crystal structures were determined by X-ray single crystal analysis. [Sb 2 (TeO 4 )](SO 4 ) crystallizes in the triclinic space group P ī (No. 2) with lattice parameters a=5.572(2), b=7.247(2), c=9.540(3) Å, V=358.5(2) Å 3 , and Z=2, while [Sb 2 (TeO 3 ) 2 ](SO 4 ) crystallizes in the orthorhombic space group Pbca (No. 61) with lattice parameters a=7.368(2), b=14.571(3), c=16.521(3) Å, V=1773.7(6) Å 3 , and Z=8. The structure of [Sb 2 (TeO 4 )](SO 4 ) features a three-dimensional framework, composed of [SbO 4 ] trigonal bipyramids and [TeO 4 ] polyhedra to form a cationic 2 ∞[Sb 2 (TeO 4 )] 2+ corrugated cationic layers along [100], linked by SO 4 2− anions. [Sb 2 (TeO 3 ) 2 ](SO 4 ) forms a three-dimensional framework consisting of two dimensional wrinkled layers of 2 ∞[Sb 2 (TeO 3 ) 2 ] 2+ that are linked by SO 4 2− anions. The band gaps of 4.16 eV and 3.72 eV for [Sb 2 (TeO 4 )](SO 4 ) and [Sb 2 (TeO 3 ) 2 ](SO 4 ) respectively are estimated from the solid state UV-vis-NIR diffuse reflectance spectra. Thermal analysis indicated that both compounds are thermally stable up to about 500 °C. The electrochemical specific capacity of [Sb 2 (TeO 4 )](SO 4 ) was determined to 245 mA h g −1 on the first cycle in a Li-ion half-cell, the capacity remains at about 106 mA h g −1 after 500 cycles.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2019
·Vol. 645
·期 10
·745-751
·
IF 1.337
Xiaofang Li,Yuandong Wu,Dajiang Mei,Thomas Doert
Three new alkali metal transition metal sulfate-oxalates, RbFe(SO 4 )(C 2 O 4 ) 0.5 · H 2 O and Cs M (SO 4 )(C 2 O 4 ) 0.5 · H 2 O ( M = Mn, Fe) were prepared through hydrothermal reactions and characterized by single-crystal X-ray diffraction, solid state UV/Vis/NIR diffuse reflectance spectroscopy, infrared spectra, thermogravimetric analysis, and powder X-ray diffraction. The title compounds all crystallize in the monoclinic space group P 2 1 / c (no. 14) with lattice parameters: a = 7.9193(5), b = 9.4907(6), c = 8.8090(6) Å, β = 95.180(2)°, Z = 4 for RbFe(SO 4 )(C 2 O 4 ) 0.5 · H 2 O; a = 8.0654(11), b = 9.6103(13), c = 9.2189(13) Å, β = 94.564(4)°, Z = 4 for CsMn(SO 4 )(C 2 O 4 ) 0.5 · H 2 O; and a = 7.9377(3), b = 9.5757(4), c = 9.1474(4) Å, β = 96.1040(10)°, Z = 4 for CsFe(SO 4 )(C 2 O 4 ) 0.5 · H 2 O. All compounds exhibit three-dimensional frameworks composed of [ M O 6 ] octahedra, [SO 4 ] 2– tetrahedra, and [C 2 O 4 ] 2– anions. The alkali cations are located in one-dimensional tunnels.
研究领域:
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2023
·
IF 4.1
Ning Shi,Tianlang Zhu,Hongyan Zhang,Hongsheng Huang,Liang Zhou,Ying Liu,Riyang Shu
Catalytic conversion of cellulose into the novel platform molecule 2,5-hexanedione (HXD) is regarded as one feasible approach for high-value utilization of biomass resources. Here, we reported one efficient way of one-pot conversion of cellulose into HXD with high yield of 80.3% in H2O and tetrahydrofuran (THF) mixture within Al2(SO4)3 combined with Pd/C as a catalyst. In the catalytic reaction system, Al2(SO4)3 could catalyze the conversion of cellulose into 5-hydroxymethylfurfural (HMF), and Pd/C combined with Al2(SO4)3 could catalyze the hydrogenolysis of HMF into furanic intermediates such as 5-methylfurfuryl alcohol and 2,5-dimethylfuran (DMF) without causing over-hydrogenation of these furanic intermediates. These furanic intermediates were finally transformed into HXD catalyzed by Al2(SO4)3. Besides, the H2O/THF ratio could significantly influence the reactivity of the hydrolytic furanic ring-opening of the furanic intermediates. The catalytic system also showed excellent performance on the conversion of other carbohydrates (glucose and sucrose) into HXD.
研究领域:
生物质化学
·
催化反应工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2020
·Vol. 646
·期 20
·1688-1695
·
IF 1.24
Shuangsheng Cheng,YuanDong Wu,Dajiang Mei,Shaoguo Wen,Thomas Doert
Four alkali metal bismuth sulfates, NaBi(SO 4 ) 2 · H 2 O ( 1 ) and ABi(SO 4 ) 2 [A = K ( 2 ), Rb ( 3 ), Cs ( 4 )], were successfully synthesized by hydrothermal methods. The crystal structure of 1 features a three-dimensional tunnel framework constructed by BiO 9 tri-capped trigonal prisms and SO 4 tetrahedra interconnected via common corners and edges. Compound 2 exhibits a two-dimensional 2 ∞ [Bi(SO 4 ) 2 ] – double-layered structure, assembled by one-dimensional 1 ∞ [BiS(1)O 4 ] + chains which are linked via S(2)O 4 2– tetrahedra. The isostructural compounds 3 and 4 possess a two-dimensional layered structure, and the layers being composed by BiO 8 square antiprism and SO 4 tetrahedra. The alkali metal cations are located between the layers or in the tunnels of the structures, respectively. The differences in the crystal structures of the title compounds can mainly be attributed to the different sizes of the alkali metal cations and their different coordination environments. Thermogravimetric analysis evidence that compound 1 losses one equivalent of water at 120 °C whereas the anhydrous compounds 2 – 4 are stable up to about 450, 575, and 578 °C, respectively. The solid-state UV/Vis/NIR diffuse reflectance spectra indicate bandgaps of approximately 4.48, 4.43, 3.98, and 3.96 eV for compounds 1 – 4 , respectively.
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE SCIENCES
·
2015
·
IF 1.839
Xiao Zhao,Dajiang Mei,Jingli Xu,Yuandong Wu
The reactions of A 2 SO 4 ( A = K, Cs) and Sb 2 O 3 with H 2 SO 4 (98%) yielded single crystals of A Sb(SO 4 ) 2 ( A = K, Cs). The crystal structures were investigated by single crystal X-ray diffraction. KSb(SO 4 ) 2 crystallizes in the monoclinic space group P 2 1 / c (No. 14) with lattice parameters a = 10.6745(18), b = 7.1579(12), c = 8.7597(15) Å, β = 91.466(3) ° , V = 669.1(2) Å 3 , Z = 4. CsSb(SO 4 ) 2 crystallizes in the orthorhombic space group P 2 1 2 1 2 1 (No.19) with lattice parameters of a = 5.2429(8), b = 9.5942(16), c = 14.850(2) Å, V = 746.98(20) Å 3 , Z = 4. Both compounds show the Sb 3+ cations in same seesaw-type coordination of oxygen atoms from different SO 4 2 − anions, but exhibit complex two-dimensionally and one-dimensionally linked anionic structures. The alkali cations are located between the layers or chains. The compounds were characterized with FT-IR spectra and solid state UV–vis–NIR diffuse reflectance spectroscopy . The band gaps were estimated at 4.64 eV for KSb(SO 4 ) 2 and 4.68 eV for CsSb(SO 4 ) 2 .
研究领域:
化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Tiezheng Niu,Junzhuo Cai,Penghui Shi,Guohua Zhao
Sulfate-based electrochemical advanced oxidation is of rising importance for pollutant removal , however, adscititious sulfate has adverse effects on water salinity . A novel electrochemical system which could exploit the existed SO 4 2− for in situ generation of SO 4 − was successfully constructed with boron doped diamond (BDD) anode and hierarchical 1D Co 3 O 4 nanowire array cathode. The in situ electrochemical electron paramagnetic spectroscopy and titration were used to study the positive correlation between the increase of sulfate radicals (SRs) and the efficient activation of peroxydisulfate (PDS) by hierarchical 1D Co 3 O 4 nanowire array cathode. Electrochemical impedance and X-ray photoelectron spectroscopy revealed that the efficient activation of PDS by the Co 3 O 4 cathode was derived from the excellent electron transport capability of the 1D nanostructure , and the electric field accelerates the reduction of Co(III). The novel hierarchical 1D Co 3 O 4 nanowire array cathode can completely degrade dibutyl phthalate in 45% less time with 38% less energy compared to a traditional graphite cathode without the requirement of extra chemicals. The possible mechanism of anodic PDS accumulation and cathodic SRs generation was firstly revealed, and this advanced electrochemical oxidation system provides a good reference for the in situ sustainable remediation in sulfate-containing water.
研究领域:
环境科学
·
电化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2018
·
IF 3.972
Fangfang He,Qian Wang,Cuifang Hu,Wen He,Xueying Luo,Ling Huang,Daojiang Gao,Jian Bi,Xin Wang,Guohong Zou
Two new antimony sulfate chlorides named (NH4)2SbCl(SO4)2 and (NH4)SbCl2(SO4) were successfully synthesized through solvent-free synthesis method. (NH4)2SbCl(SO4)2 exhibits a three-dimensional framework constructed of [SbCl(SO4)2]2– chains and NH4+ ions. And the NH4+ cations play the role of charge balance and provide the hydrogen bond constructed with oxygen atoms. (NH4)SbCl2(SO4) shows a two-dimensional layer structure that is composed of the regularly stacked [SbCl2(SO4)]− chains via hydrogen-bonding interactions. Both of the titled compounds possess the same chemical composition and the similar Sb–Cl–SO4 chains, while hydrogen-bonding interactions and lone-pair cations play the synergistic effect on the framework structures and macroscopic centricities resulting in that the (NH4)2SbCl(SO4)2 is centrosymmetric and the (NH4)SbCl2(SO4) is non-centrosymmetric (NCS). Powder second harmonic generation (SHG) measurements indicated that the NCS compound (NH4)SbCl2(SO4) is type I phase-matchable and exhibits SHG responses of ∼1.7 times that of KH2PO4.
研究领域:
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
TURKISH JOURNAL OF CHEMISTRY
·
2022
·Vol. 45
·期 4
·1133-1145
·
IF 1.151
WANG DING-KAI,ZHAO WEI,CUI MING-YU,GUO TIAN-TIAN,FU SHUI-YUAN,LI WEI-GANG
A series of Zr(SO4)2/SiO2 solid acid catalysts with different Zr(SO4)2 loadings were prepared by water-soluble-impregnation method at room temperature. Then, the prepared catalysts were characterized by Fourier transform infrared spectroscopy, transmission electron microscopy and energy-dispersive X-ray spectrum, X-ray diffraction, adsorption/desorption of N2, and temperature-programmed desorption of NH3. The results showed that the active component Zr(SO4)2 was successfully adhered to the mesoporous SiO2, and the acid amount of Zr(SO4)2/SiO2 increased with the increasing of the Zr(SO4)2 loadings. Finally, the wheat stalk was used as raw material and depolymerized over Zr(SO4)2/SiO2 to produce ethyl levulinate (EL). The reaction mixture was separated and purified by filtration and vacuum distillation. The kinetic characteristics and the reaction pathway were also studied. A comparative study showed that 20 wt.% Zr(SO4)2/SiO2 exhibited higher catalytic activity. When reaction temperature, time, catalyst dosage and Zr(SO4)2 loadings were 190 °C, 50 min, 20 wt.% and 30 wt.%, the EL yield reached a maximum of 17.14%. The relative content of EL exceeded 90% after three steps of distillation.
✓ 已验证
DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
·
2020
·Vol. 2020
·期 10
·854-858
·
IF 2.529
Yaoguo Shen,Xiaoling Xue,Wenyuan Tu,Zhiqun Liu,Renwen Yan,Hong Zhang,Junrong Jia
Graphical An ultraviolet-transparent sulfate Cs 2 Ca 2 (SO 4 ) 3 has been synthesized. It exhibits a moderate second harmonic generation efficiency and has good thermal stability higher than those of most nonlinear optical sulfates reported recently. The noncentrosymmetric structure is one prerequisite of a nonlinear optical (NLO) material. Here, a sulfate Cs 2 Ca 2 (SO 4 ) 3 with a noncentrosymmetric structure was synthesized by high-temperature solid-state reaction, and its crystals were grown by spontaneous crystallization. Single-crystal X-ray diffraction indicates that Cs 2 Ca 2 (SO 4 ) 3 features a three-dimensional framework constituted by corner-sharing CaO 6 octahedra and SO 4 tetrahedra. Optical characterizations suggest that Cs 2 Ca 2 (SO 4 ) 3 is transparent down to 200 nm and exhibits a moderate second-order NLO response of about 0.6 × KH 2 PO 4 . Electronic band structure calculations were performed to elucidate the optical origin. Furthermore, the title compound has good thermal stability of up to about 1000 K, which is greatly higher than those of NLO sulfates reported recently. This work may shed useful light on the development of new NLO sulfates with high thermal stability.
研究领域:
材料科学
·
晶体学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）