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Adsorption and electro-assisted method removal of boron in aqueous solution by nickel hydroxide
Tao Song,Qinglong Luo,Fengfeng Gao,Bing Zhao,Xiaogang Hao,Zhong Liu 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.118 No.-
Technical research on electrochemical acid-free desorption of boron is imminent, and layered nickelhydroxide is a potential boron-responsive active electrode material. In this paper, nickel hydroxidewas used to remove boron from aqueous resources by electro-assisted and conventional adsorptionmethods. The option of conditions by nickel hydroxide adsorption for boron is mild (pH: 7 9) withan exothermic process. Interestingly, the synergistic effect of physical and chemical adsorption improvesthe adsorption rate and adsorption capacity of nickel hydroxide for boron under the action of the electricfield, and the adsorption performance is better at low voltage (0.2 0.4 V). The equilibrium time of theelectro-assisted method is 4 times shorter than conventional adsorption methods, and the maximumadsorption capacity can reach 57.5 mg/g than conventional adsorption (45.4 mg/g). In addition, the nickelhydroxide has selectivity in high-concentration anion solutions and can be easily regenerated by an alkalinesolution. Therefore, it is expected that nickel hydroxide with the electro-assisted method could be apotential approach for the high-efficiency and eco-friendly removal of boron.
INEQUALITIES FOR CHORD POWER INTEGRALS
Xiong, Ge,Song, Xiaogang Korean Mathematical Society 2008 대한수학회지 Vol.45 No.2
For convex bodies, chord power integrals were introduced and studied in several papers (see [3], [6], [14], [15], etc.). The aim of this article is to study them further, that is, we establish the Brunn-Minkowski-type inequalities and get the upper bound for chord power integrals of convex bodies. Finally, we get the famous Zhang projection inequality as a corollary. Here, it is deserved to mention that we make use of a completely distinct method, that is using the theory of inclusion measure, to establish the inequality.
Inequalities for Chord power integrals
Ge Xiong,Xiaogang Song 대한수학회 2008 대한수학회지 Vol.45 No.2
For convex bodies, chord power integrals were introduced and studied in several papers (see [3], [6], [14], [15], etc.). The aim of this article is to study them further, that is, we establish the Brunn- Minkowski-type inequalities and get the upper bound for chord power integrals of convex bodies. Finally, we get the famous Zhang projection inequality as a corollary. Here, it is deserved to mention that we make use of a completely distinct method, that is using the theory of inclusion measure, to establish the inequality. For convex bodies, chord power integrals were introduced and studied in several papers (see [3], [6], [14], [15], etc.). The aim of this article is to study them further, that is, we establish the Brunn- Minkowski-type inequalities and get the upper bound for chord power integrals of convex bodies. Finally, we get the famous Zhang projection inequality as a corollary. Here, it is deserved to mention that we make use of a completely distinct method, that is using the theory of inclusion measure, to establish the inequality.
Flash-induced reduced graphene oxide as a Sn anode host for high performance sodium ion batteries
Jeon, Yeryung,Han, Xiaogang,Fu, Kun,Dai, Jiaqi,Kim, Joo Hyun,Hu, Liangbing,Song, Taeseup,Paik, Ungyu The Royal Society of Chemistry 2016 Journal of materials chemistry. A, Materials for e Vol.4 No.47
<P>Sn is a promising anode material for sodium ion batteries due to its high capacity. However, the fast capacity fading caused by large volume changes limits the employment of Sn anodes. Graphene has been considered as a host for Sn anode materials to improve the cycle performance. However, graphene scaffold preparation with large free spaces is challenging due to the need for a sacrificial template and etching process. Here, we prepared a porous scaffold composed of both reduced graphene oxide and graphene<I>via</I>a camera flash reduction as the host for Sn. The camera flash induces the reduction of the graphene oxide and pores generated by the<I>c</I>-axis popping of the graphene. The mechanical strength of the scaffold is also achieved by adjusting the concentration of graphene which does not react with the flash light. The porosity and mechanical properties of the reduced graphene oxide-graphene scaffold could be controlled by flash irradiation conditions and the mixing ratio between the graphene oxide and graphene. The porous scaffold enables a uniform Sn loading and an improvement in the sodium ion battery performance due to a sufficient free space for accommodating the Sn volume change and mechanical stability.</P>