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Cover Illustration
2017, Vol.3  No.3
The cover picture shows that the separation of oil-water via a hybrid forward osmosis-post-treatment process. The oily wastewater was treated through a hydroacid complex facilitated FO system, followed by post-treatment to re-concentrate the dilute draw solution of hydroacid complex and collect product water. Hydroacid complexes have great potentials as draw solutes for FO due to their superior performance in terms of high FO water fluxes and negligible reverse solute diffusion and are widely used in the FO process for wastewater reclamation, seawater desalination, osmotic power generation and pharmaceutical enrichment. More details are discussed in the article by Ge and coworkers on page 148—154.
Online ISSN: 2414-3421
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  • Table of Content
      24 September 2017, Volume 3 Issue 3 Previous Issue    Next Issue
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    Contents: Gen. Chem. 3/2017
    General Chemistry. 2017, 3 (3): 140-141.  
    Abstract   PDF (194KB) ( )
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    Application of Luminescent Metal-Organic Frameworks for Chemical Sensing
    Xinhui Zhou, Yali Zhu
    General Chemistry. 2017, 3 (3): 142-147.   DOI: 10.21127/yaoyigc20170012
    Abstract   HTML   PDF (785KB) ( )

    Nowadays, there has been an enormous demand for chemical sensors to detect a variety of analytes for a range of applications, including homeland security guarding, exploration of mineral resources, meteorological observation and telemetry, industrial automation, agricultural fresh preservation, environment monitoring and food quality controlling. Metal-organic frameworks are a new class of porous materials, which are formed by the assembly of metal ions with functional organic ligands. They have attracted great attention in chemical sensing owing to their suitable porosity, specific functional groups, higher quantum yield and tunable luminescent properties. This review summarizes some examples of the application of luminescent metal-organic frameworks for sensing of nitro explosives, metal ions, small molecules, pH value and temperature.

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    Progress in Forward Osmosis Membrane Separation Process
    Qiaozhen Chen, Wenxuan Xu, Qingchun Ge
    General Chemistry. 2017, 3 (3): 148-154.   DOI: 10.21127/yaoyigc20170009
    Abstract   HTML   PDF (537KB) ( )

    Forward osmosis (FO) has been extensively investigated and demonstrated its advantages in a range of FO applications over the past decade. However, challenges still remain in terms of the lack of both efficient FO membranes and appropriate draw solutes for practical FO applications. To promote the advancement of FO technology, considerable efforts have been made in exploring novel FO membranes and draw solutes in recent years. This paper will provide a short review on the progress of both FO membranes and draw solutes. First of all, a brief overview on FO principle is given. Then the progress in FO technology related to FO membrane and draw solute is presented with specific examples. Finally, challenges and future directions of FO technology in exploring efficient FO membranes and promising draw solutes are also highlighted. This article may provide new insights into the future development of FO technology and promote practical FO applications.

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    Converting Waste Plastics into High Yield and Quality Carbon-Based Materials
    Qinghong Kong, Ling Yang, Junhao Zhang, Yibing Cai
    General Chemistry. 2017, 3 (3): 155-158.   DOI: 10.21127/yaoyigc20170010
    Abstract   HTML   PDF (563KB) ( )

    Recycling waste plastics including polypropylene, polyethylene, polyethylene terephthalate, polystyrene, etc, is a very important scientific, social and economic topic. Despite significant advances in recent years, approximately 400 million tons of waste plastics are still disposed by landfill. This is obviously not an effective solution due to plastic’s non-biodegradable character. Aside from mechanical recycling, which turns waste plastics into new products, and thermal recycling, which releases the thermal energy through combustion of waste plastics, chemical recycling converts waste plastics into feedstock for chemicals/materials/fuels production. This article reviews previous work on the pyrolysis and catalytic decomposition route that converted plastics into carbon-based materials, which exhibited extraordinary physical and chemical properties. However, their production processes are both resource and energy-intensive. Therefore, recycling technologies for waste plastics are still at an early stage and more innovation in waste plastic recycling is needed.

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    Orginal Reports
    Acetic Acid Assisted to Prepare Bi2MoO6 with Visible-Light-Induced Activity
    Xiangchao Meng, Zisheng Zhang
    General Chemistry. 2017, 3 (3): 159-163.   DOI: 10.21127/yaoyigc20170008
    Abstract   HTML   PDF (995KB) ( )

    Photocatalysis has been extensively studied and developed. To overcome the visible-light irresponsive hindrance, developing novel materials has become a significant promise. Bismuth-based semiconductors were promising candidates with suitable band gaps, and various bismuth-based semiconductors can be prepared via facile methods. Herein, we report a modified hydrothermal method assisted by adding acetic acid in the precursor to prepare Bi2MoO6 with enhanced photocatalytic activity in the degradation of RhB under visible light irradiation. This work provides a new approach to improve photocatalytic activity via adding chemicals in the precursors during the preparation.

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    Research on Photocatalytic Degradation of Methyl Orange by a β-Cyclodextrin/Titanium Dioxide Composite
    Shuting Lu, Nan Sun, Ting Wang
    General Chemistry. 2017, 3 (3): 164-169.   DOI: 10.21127/yaoyigc20170007
    Abstract   HTML   PDF (578KB) ( )

    A photocatalytic composite of β-cyclodextrin/titanium dioxide (β-CD/TiO2) was synthesized via the photoinduced assembly method in this work. The morphology of the composite was characterized by scanning electron microscope (SEM) and transmission electron microscopy (TEM), respectively. The chemical composition was detected by fourier transform infrared spectroscopy (FTIR). By means of phenolphthalein probe technique and back titration method, the contents of active β-CD (2.0%) and TiO2 (0.0971±0.0006 g/0.1 g) in the prepared β-CD/TiO2 composite were obtained. In order to investigate deeply the role of β-CD in TiO2 photocatalytic system, 100 mL of 0.1 mmol L-1 methyl orange (MO) aqueous solution was used as the organic pollutant, the photocatalytic activity of β-CD/TiO2 and pure TiO2 were assessed under the same conditions. The results showed that the degradation time of β-CD/TiO2 was 43% shorter than that degraded by the aqueous solution containing only TiO2. β-CD/TiO2 demonstrated a better photocatalytic activity. The kinetics of photocatalytic degradation of MO by β-CD/TiO2 and pure TiO2 was studied. In addition, the degradation efficiency of MO by β-CD/TiO2 was still above 85% after recycling for 5 times.

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