NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 26
·12482-12487
·
IF 3.925
Wenjuan Ma,Jianlong Huang,Bin Dai,Feng Yu
A new metal iodate, BaI3O9H, has been successfully synthesized by the hydrothermal method. It crystallizes in the monoclinic space group P21/c with the lattice parameters: a = 7.777(3) Å, b = 8.000(3) Å, c = 13.7905(5) Å, β = 92.803(4)°, Z = 4. The structure contains both isolated [IO3] group and [I2O6H] dimer, which is obtained by introducing hydroxyl groups into the iodate. We investigated the crystal structure, optical properties and thermal stability of the title compound, which indicates that BaI3O9H is a good candidate as a UV birefringence material. In addition, the relationship between structure and property is analyzed by first-principles calculations.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2023
·Vol. 20
·期 3
·2306459
·
IF 13.3
Shuoxing Yang,Hongping Wu,Zhanggui Hu,Jiyang Wang,Yicheng Wu,Hongwei Yu
Nonlinear optical (NLO) crystals are indispensable for the solid-state lasers for their ability to expand wavelength spectral to the regions where the directing lasing is difficult or even impossible, yet the rational design of a high-performance NLO crystal remains a great challenge owing to the severe structural and properties’ requirements. Herein, a new noncentrosymmetric (NCS) and polar gallium iodate, LiGa(IO 3 ) 4 , with a novel 2D anionic layer, is successfully designed and synthesized by the aliovalent substitution strategy based on classic α-LiIO 3 . The 2D [Ga(IO 3 ) 4 ] ∞ − layer in LiGa(IO 3 ) 4 is built from the GaO 6 octahedra and highly polarizable units IO 3 . Compared with its parent compound, the partial replacement of A-site Li + cation with main group Ga 3+ cation facilitates LiGa(IO 3 ) 4 to possess excellent NLO properties, including the large second-harmonic generation (SHG) response (14 × KH 2 PO 4 (KDP) @ 1064 nm), wide bandgap (4.25 eV), large birefringence (0.23 @ 1064 nm), and wide optical transparency from UV to mid-IR. These reveal that LiGa(IO 3 ) 4 will be a promising NLO crystal.
研究领域:
材料科学
·
晶体工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Jin Chen,Chun-Li Hu,Yi-Lin Li,Qian-Qian Chen,Bing-Xuan Li,Jiang-Gao Mao
Herein, we reported two alkali metal molybdenum(VI) iodates, namely, NaMoO 3 (IO 3 ) and γ-KMoO 3 (IO 3 ) with 1D and 3D [MoO 3 (IO 3 )] − anionic architectures, respectively. The novel 1D chain in NaMoO 3 (IO 3 ) and the 3D network in γ-KMoO 3 (IO 3 ) are constructed by the 0D Λ-shaped cis -[MoO 4 (IO 3 ) 2 ] 4− building units interconnected by bridging IO 3 − anions as well as the corner-sharing of oxo anions. Importantly, the polar γ-KMoO 3 (IO 3 ) exhibits a very large second-harmonic generation (SHG) effect of 12 × KH 2 PO 4 (KDP) under 1064 nm laser radiation, a high laser-Induced damage threshold value (52 × AgGaS 2 ), and a moderate birefringence of 0.087@1064 nm, whereas the centrosymmetric NaMoO 3 (IO 3 ) has a large birefringence of 0.208@1064 nm. This study further proves the useful route of exploring promising optical materials via assembling the 0D basic building units into higher dimensional anionic architectures.
研究领域:
无机化学
·
材料科学
·
光学
✓ 已验证
DOI
高影响因子
SOLID STATE SCIENCES
·
2022
·
IF 3.752
Bao Jiang,Kewang Zhang,Yuchen Yan,Yanhui Zhang,Zhi Su
The single crystal of Pb 2 IO 3 Br 3 was successfully synthesized by the hydrothermal method , which is the first case of bromine-containing iodate. The polycrystalline powder of the compound was synthesized and its purity was characterized by X-ray single crystal diffraction. Pb 2 IO 3 Br 3 crystallized in the space group P 1 ( — ) (No. 2). In the structure of Pb 2 IO 3 Br 3 , the isolated [IO 3 ] - groups are in a reverse arrangement to fill in the tunnels of the three-dimensional network that is composed of [PbBr n ] polyhedra. In addition, first-principle calculations have been performed to investigate the relationship between the crystal structure and the optical properties . The result indicates Pb 2 IO 3 Br 3 possesses a moderate birefringence (Δn = 0.064, λ = 1064 nm), which is mainly originated from the umbrella-like [IO 3 ] groups and the [PbOBr] polyhedra.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Chen-Yan Hu,Zi-Yi Dong,Zheng-Yu Dong,Yi-Hui Wu,Sheng-Jie Ji,Li-Li Hu,Xin-Yu Yang,Hao Liu,Bin Xu
The present study investigated the mechanism of manganese ion (Mn(II))-activated periodate (PI) for rapid removal of sulfadiazine (SDZ). The Mn(II)/PI system showed excellent SDZ degradation results with 99.8 % degradation efficiency within 2 min at pH = 5.5. Mechanism study reveals that the degradation of SDZ in the Mn(II)/PI system takes place mainly through an electron transfer process. Mn(II) can be oxidized by PI to formed the in-situ MnO 2 , followed by the generation of MnO 2 -PI complex. Electrochemical methods have confirmed that the generated MnO 2 -PI complex significantly contributes to the degradation of pollutants. MnO 2 -PI mediates the transfer of electrons from SDZ to PI surface through surface vacancies, thereby achieving efficient degradation of pollutants. p -methoxyphenyl sulfone (PMSO) is used as a probe compound, and almost 90 % of PMSO is converted into PMSO 2 in the Mn(II)/PI/SDZ system, manifesting that excessive PI may oxidize active Mn(IV) to Mn(V). And the generated Mn(V) also contributes to the SDZ degradation. The SDZ degradation pathway is proposed and the transformation of iodine species is detected. The final iodine species in the system are iodate. The chloride culture experiment has confirmed that the production of organic iodine is very low, indicating no significant health risks. This study reveals mechanism of periodate-based process, providing theoretical and technical implementation guidelines of periodate in water treatment.
研究领域:
环境科学
·
化学工程
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2021
·Vol. 24
·期 1
·77-82
·
IF 3.545
Dandan Wang,Xiaoqing Jiang,Pifu Gong,Xinyuan Zhang,Zheshuai Lin,Zhanggui Hu,Yicheng Wu
An alkali metal gallium iodate, Cs3[Ga2O(I3O9)(IO3)4(HIO3)] (CGIO), was synthesized by the traditional hydrothermal method. Interestingly, CGIO revealed a novel I3O93− fundamental building block (FBB) constituted by two IO3 tetrahedrons and one IO5 polyhedron through sharing O atoms. The new I3O93− trimer forms a 0D [Ga2O(I3O9)(IO3)4(HIO3)]3− anion cluster together with the [Ga2O11]16− dimer and isolated IO3− units. The UV-vis-NIR diffuse reflectance spectrum of CGIO shows a wide bandgap of 4.05 eV, and the thermal stability could reach above 400 °C. First-principles calculations explicated that the optical properties of CGIO mainly originated from the iodate anion units with a calculated birefringence of 0.04 at 1064 nm.
研究领域:
无机化学
·
材料科学
·
晶体学
·
物理化学
·
光学材料
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Jianlong Huang,Fengjiao Guo,Zhiyong Guo,Jianbang Chen,Bin Dai,Feng Yu
A series of ammonium-containing fluoroiodates, NH4IO2F2 and (NH4)3(IO2F2)3·H2O, with isolated [IO2F2] units have been fabricated by a fluorine-oxygen substitution strategy from NH4IO3. The two compounds crystallize in the orthorhombic system, but in different space groups, noncentrosymmetric Pca21 for NH4IO2F2 and centrosymmetric Pnma for (NH4)3(IO2F2)3·H2O, and show wide band gaps of 4.53 eV for (NH4IO2F2) and 4.55 eV for ((NH4)3(IO2F2)3·H2O). In addition, NH4IO2F2 exhibits a 1.2 × KDP second harmonic generation response, a short ultraviolet cutoff edge in iodates, and a good crystal growth habit. The crystal of NH4IO2F2 with a size of 11 × 5 × 2 mm3 was obtained by the aqueous solution method. The results enrich the structural diversity of iodate and supply a greater understanding of the design of new functional materials based on the fluoroiodates.
研究领域:
无机化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 4
·1193-1202
·
IF 1.6
Zhao Yuting,Li Jie,Chen Long,Guo Qi,Li Lingyi,Chai Zhifang,Wang Shuao
Efficient removal of iodide (I − ) and iodate (IO 3 − ) from aqueous solution is highly desirable for waste disposal and remediation of radioiodine contamination. We report here a bifunctional anion exchange resin Purolite A530E for the effective I − /IO 3 − adsorption, which shows a priority anion-exchange affinity for I − (99%) over IO 3 − (9.7%). The maximum adsorption capacity for I − is 275.16 mg·g −1 fitted by the Langmuir isotherm model, much higher than most adsorbents. Furthermore, Purolite A530E exhibits great selectivity for I − over competing anions, which endows the resin with promising I − remediation that over 99% I − can be removed from simulated Hanford groundwater (HGW).
研究领域:
环境科学
·
放射化学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2021
·Vol. 11
·期 17
·10309-10315
·
IF 3.361
Kaitong Liu,Jian Han,Junben Huang,Zhonglei Wei,Zhihua Yang,Shilie Pan
Three new iodates SrTi(IO3)6·2H2O, (H3O)2Ti(IO3)6, and SrSn(IO3)6 have been synthesized via a facile hydrothermal method. The three compounds have zero-dimensional crystal structures composed of one [MO6]8− (M = Ti, Sn) octahedron connected with six [IO3]− trigonal pyramids. However, the particular coordination of Sr2+ cations results in distinct arrangements of lone pair electrons in an [IO3]− trigonal pyramid, which leads to large birefringences. More importantly, this work enriches the species crystal chemistry for [M(IO3)6]2− (M = Ti, Sn) clusters-containing iodates.
研究领域:
材料科学
·
晶体化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Water Process Engineering
·
2024
·
IF 6.3
Da Wang,Yuyue Huang,Sisi Xiao,Qingjie Xie,Bianbadrolma,Huijuan Wang
This study applied the advanced oxidation process of simulated sunlight-induced periodate activation (SSL/PI) to degrade antibiotics. In order to enhance degradation, TiO 2 was also added to the SSL/PI system to create a synergistic effect (SSL/PI/TiO 2 ) and boost the degradation process. Sulfadiazine (SDZ) was selected as the target pollutant to investigate the enhancement from TiO 2 addition and the influential parameters on degradation. The obtained results showed that PI concentration was the most important parameter affecting SDZ degradation, while TiO 2 dosage and solution pH had less impact. Adding Fe 2+ and CO 3 2− inhibited SDZ degradation, while Cu 2+ and Cl − had minimal effect. DFT analysis indicated that the C4, C5, N23, N26, and N27 sites of the SDZ molecule were susceptible to be attacked by the formed reactive species. The key reactive species responsible for SDZ degradation in the SSL/PI/TiO 2 system were •O 2 − , 1 O 2 , IO 3 •, and •OH. LC-MS analysis identified 10 main byproducts during SDZ degradation, then three possible degradation pathways were predicted. The concentration detection of I 2 , I 3 − , and HOI, along with lettuce seed germination experiments, verified that the toxicity of the SDZ solution reduced after treatment with the SSL/PI/TiO 2 process.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2017
·
IF 4.217
Qian Wen Cao,Yi Fan Zheng,Xu Chun Song
The efficient visible-light-driven AgIO 3 /AgBr photocatalyst was successfully synthesized by an in-situ anion-exchange method at room temperature. The scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and UV–vis diffuse reflection spectroscopy (DRS) were used to characterize the obtained samples. The photocatalytic activities of the as-prepared heterojunctions were estimated by decomposing the organic dye RhB under visible-light irradiation ( λ > 420 nm). Compared with pure AgBr and AgIO 3 , the AgIO 3 /AgBr compounds showed dramatically improved visible-light photocatalytic activity. Besides, the results also revealed that 20% AgIO 3 /AgBr exhibited the best photocatalytic activity, which could decompose the RhB completely in 24 min. The enhanced photocatalytic activity of the composites could be ascribed to the high separation rate of the photoinduced electron–hole pairs in the heterojunction structure. Moreover, the radical trap experiments were also carried out which confirmed that h + played the major role in RhB photodegradation . The possible mechanism of RhB degradation on the AgIO 3 /AgBr composite was also discussed according to the results of the experiments and the performance of the obtained photocatalysts.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2021
·
IF 4.076
Xiaoqing Jiang,Hongping Wu,Hongwei Yu,Zhanggui Hu,Jiyang Wang,Yicheng Wu
Iodates capable of exhibiting large second-harmonic-generation (SHG) response, wide transparent windows, and ease in crystal growth are an ideal materials class for the design of mid-infrared (IR) nonlinear optical (NLO) crystals. In previous research, we have presented a new strategy for effectively designing noncentrosymmetric iodates on the basis of the structure-directing properties of d0 transition-metal (TM) oxide fluoride anions. However, due to the d–d electronic transition of TM cations, the band gaps of these TM-containing iodates are relatively small. In this study, we substituted TM cations of β-Ba[VFO2(IO3)2] (BVIF) with In3+ cations and successfully synthesized the first F–-containing indium iodate, Ba[InF3(IO3)2]. It has a similar structure and exhibits an SHG response equivalent with that of BVIF. Remarkably, however, the band gap of Ba[InF3(IO3)2] is larger than that of BVIF. The analysis of the structure–property relationship indicates that the enlarged band gap mainly originates from the removal of TM cations. In addition, due to the strong anisotropic polarization of the [IO3]− groups, Ba[InF3(IO3)2] can also exhibit a large birefringence (0.172@1064 nm), which not only is helpful for the phase-matching ability of Ba[InF3(IO3)2] in a wide wavelength range but also suggests that Ba[InF3(IO3)2] may be a potential birefringent crystal.
研究领域:
材料科学
·
晶体学
✓ 已验证
产品关联
DOI
高影响因子
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