本文選題：鋅錳氧化物 + 納米粒子��； 參考：《渤海大學(xué)》2017年碩士論文

【摘要】：本論文以廢舊堿性鋅錳電池為原料,控制鋅投加量合成Zn_xMn_(1-x)O納米粒子,分析其對(duì)雙酚A的光催化降解性能,并使用Zn_xMn_(1-x)O納米粒子光催化降解水中的對(duì)苯二酚和間苯二酚。實(shí)驗(yàn)結(jié)果如下:1.將電池拆分成塑料、銅帽、鋅和粉末等,把搗碎的鋅和預(yù)處理的粉末依次加入H2SO4溶液溶解,然后加入NH3H2O共沉淀制成Zn_xMn_(1-x)O納米粒子,通過(guò)X射線粉末衍射儀(XRD)、能譜(EDS)、掃描電鏡(SEM)等表征手段分析合成的Zn_xMn_(1-x) O納米粒子,結(jié)果顯示合成的Zn0.5Mn0.5O納米粒子是直徑為60 nm的圓柱體,產(chǎn)率為57.1%。2.研究分析了不同鋅錳比例的Zn_xMn_(1-x)O納米粒子對(duì)雙酚A的吸附能力以及在模擬太陽(yáng)光源下的光催化降解效率。Zn_xMn_(1-x)O納米粒子對(duì)雙酚A的吸附平衡時(shí)間為40 min;在模擬太陽(yáng)光照射180 min后,雙酚A光解了21.7±1.6%,而Zn0.1Mn0.9O、Zn0.3Mn0.7O、Zn0.5Mn0.5O納米粒子對(duì)雙酚A的光催化降解效率分別為59.41±4.32%、83.43±2.73%和71.22±4.79%。結(jié)果表明Zn0.3Mn0.7O納米粒子的光催化降解性能要優(yōu)于Zn0.1Mn0.9O、Zn0.5Mn0.5O納米粒子。3.分析探討了Zn_xMn_(1-x)O納米粒子對(duì)對(duì)苯二酚光催化降解的最優(yōu)條件:初始濃度為20 mg/L,Znx Mn1-xO投加量為0.16 g/L,初始pH為7.0,H2O2添加量為0.2%,經(jīng)過(guò)光照180 min,降解率可達(dá)到98%。4.分析探討了Zn_xMn_(1-x)O納米粒子對(duì)間苯二酚光催化降解的最優(yōu)條件:初始濃度為10 mg/L,Znx Mn1-xO投加量為0.12 g/L,初始pH為6.5,H2O2添加量為0.2%,經(jīng)過(guò)光照180 min,降解率可以達(dá)到80%以上。實(shí)驗(yàn)發(fā)現(xiàn)利用廢舊鋅錳電池為原料制備Zn_xMn_(1-x)O納米粒子,一方面可以解決廢棄電池的回收利用問(wèn)題,降低催化劑的成本,另一方面還可以解決水污染問(wèn)題,達(dá)到以“廢”治“污”的目的。
[Abstract]:In this paper, Zn_xMn_(1-x)O nanoparticles were synthesized by controlling the dosage of zinc in waste alkaline Zn-Mn batteries, and the photocatalytic degradation of bisphenol A was analyzed. Zn_xMn_(1-x)O nanoparticles were used to photocatalytic degradation of hydroquinone and resorcinol in water. The results of the experiment are as follows: 1. The battery was separated into plastic, copper cap, zinc and powder. The crushed zinc and the pretreated powder were dissolved in H2SO4 solution, then co-precipitated with NH3H2O to form Zn_xMn_(1-x)O nanoparticles. The synthesized Zn0.5Mn0.5O nanoparticles were characterized by X-ray powder diffractometer, EDS, SEM and SEM. The results showed that the synthesized Zn0.5Mn0.5O nanoparticles were cylindrical with diameter of 60 nm and the yield was 57.1 and 0.2. The adsorption capacity of Zn_xMn_(1-x)O nanoparticles with different ratios of zinc and manganese to bisphenol A and the photocatalytic degradation efficiency under simulated solar light source. The adsorption equilibrium time for bisphenol A was 40 minutes. After simulated solar irradiation for 180 min, the adsorption equilibrium time for bisphenol A was 40 mins. The photocatalytic degradation efficiency of bisphenol A was 59.41 鹵4.320.43 鹵2.73% and 71.22 鹵4.79%, respectively. The results show that the photocatalytic degradation of Zn0.3Mn0.7O nanoparticles is superior to that of Zn0.1Mn0.9O- Zn0.5Mn0.5O nanoparticles. The optimum conditions for photocatalytic degradation of hydroquinone by Zn_xMn_(1-x)O nanoparticles were analyzed and discussed. The initial concentration of 20 mg / L Znx Mn1-xO was 0.16 g / L, the initial pH was 7.0% H _ 2O _ 2 was 0.2 and the degradation rate was 98.4 after 180 mins of illumination. The optimum conditions for photocatalytic degradation of resorcinol by Zn_xMn_(1-x)O nanoparticles were discussed. The initial concentration of 10 mg / L Znx Mn1-xO was 0.12 g / L, and the initial pH of 6.5% H _ 2O _ 2 was 0.2%. After irradiation for 180 min, the degradation rate could reach more than 80%. It is found that the preparation of Zn_xMn_(1-x)O nanoparticles using waste Zn / mn batteries as raw materials can solve the problem of recycling waste batteries and reduce the cost of catalyst, on the other hand, it can also solve the problem of water pollution. To achieve the purpose of "waste" to deal with "pollution".
【學(xué)位授予單位】：渤海大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：X703;TB383.1

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