四川环境
四川環境
사천배경
2011年
4期
9-12
,共4页
纸载P-TiO2%甲醛%光催化%影响因素
紙載P-TiO2%甲醛%光催化%影響因素
지재P-TiO2%갑철%광최화%영향인소
Papers dipped with P-TiO2%formaldehyde%photocatalysis%affecting factors
本文以牛皮纸作载体,用浸渍法制备了具有光催化作用的纳米P-TiO2光催化剂,对室内一定浓度的甲醛气体进行了降解实验研究。通过实验探讨了甲醛的初始浓度、催化剂的用量、湿度条件、溶胶pH值和金属离子的掺杂5个影响甲醛降解率的因素,结果采用美国interscan公司生产的4160型甲醛分析仪进行表征。实验结果表明,当甲醛的初始浓度约为1.53mg/m3,P-TiO2用量为11.94g,湿度约为52%,溶胶pH=5.01,掺杂6.00mL 0.20 mol/L Cu2＋离子时,甲醛的降解效果最好,最高可达93.50%,甲醛浓度降至0.0994mg/m3,达到了GB/T 18883—2002标准中规定的0.10 mg/m3。
本文以牛皮紙作載體,用浸漬法製備瞭具有光催化作用的納米P-TiO2光催化劑,對室內一定濃度的甲醛氣體進行瞭降解實驗研究。通過實驗探討瞭甲醛的初始濃度、催化劑的用量、濕度條件、溶膠pH值和金屬離子的摻雜5箇影響甲醛降解率的因素,結果採用美國interscan公司生產的4160型甲醛分析儀進行錶徵。實驗結果錶明,噹甲醛的初始濃度約為1.53mg/m3,P-TiO2用量為11.94g,濕度約為52%,溶膠pH=5.01,摻雜6.00mL 0.20 mol/L Cu2＋離子時,甲醛的降解效果最好,最高可達93.50%,甲醛濃度降至0.0994mg/m3,達到瞭GB/T 18883—2002標準中規定的0.10 mg/m3。
본문이우피지작재체,용침지법제비료구유광최화작용적납미P-TiO2광최화제,대실내일정농도적갑철기체진행료강해실험연구。통과실험탐토료갑철적초시농도、최화제적용량、습도조건、용효pH치화금속리자적참잡5개영향갑철강해솔적인소,결과채용미국interscan공사생산적4160형갑철분석의진행표정。실험결과표명,당갑철적초시농도약위1.53mg/m3,P-TiO2용량위11.94g,습도약위52%,용효pH=5.01,참잡6.00mL 0.20 mol/L Cu2＋리자시,갑철적강해효과최호,최고가체93.50%,갑철농도강지0.0994mg/m3,체도료GB/T 18883—2002표준중규정적0.10 mg/m3。
Nano-P-TiO2 photocatalyst was prepared by dipping on carrier kraft paper,and the photocatalyst was used to degrade indoor formaldehyde gas.The factors affecting the degradation rate of formaldehyde gas such as the initial concentration of formaldehyde gas,the photocatalyst demand,the humidity,the pH value and metal ions doping were discussed.The results were expressed by 4160 type formaldehyde analyzer made by American Interscan Company.The experimental results showed that the best degradation rate of formaldehyde gas could reach up to 93.50%,when the initial concentration of formaldehyde gas was about 1.53 mg/m3,the P-TiO2 demand was about 11.94 g,the humidity was about 52%,the pH value was 5.01 and 6.00 mL 0.20 mol/L Cu2＋ were doped.The concentration of formaldehyde gas was degraded to 0.0994 mg/m3,reaching the standard 0.10 mg/m3 according to GB/T 18883-2002.
