Photocatalysts for Water Treatment Applications

Ndewo na ajụjụ anyị! Anyị na-enwe ekele maka ikwenye gị na ịkekọrịta nghọta na nka gị.

Nkwado: Ka anyị na-eme nnyocha na ụwa mara mma nke photocatalysts maka mmelite mmiri, nghọta gị bụ ihe dị oke mkpa. Anyị na-achọ ịnakọta ozi zuru ezu banyere ngwaahịa photocatalytic dị iche iche, arụmọrụ ha, na ngwa pụrụ iche na ọrụ mmiri. Azịza gị ga-enyere aka ịhazi nghọta miri emi banyere otu teknụzụ ndị a nwere ike isi nyere aka dozie nsogbu dị mkpa nke mma mmiri.

Ọkpọ: Anyị na-akpọ gị ka ị sonye na ajụjụ a iji kọrọ akwụkwọ akụkọ banyere photocatalysts ị rụrụ ọrụ na ya. N'ozuzu, anyị nwere mmasị na: titanium dioxide na zinc oxide

Nghọta gị ga-enyere anyị na ndị ọzọ ghọta ikike na ikike photocatalysts na ịkwalite mma mmiri. Daalụ maka oge gị na onyinye bara uru!

Ọgwụgwọ Titanium (TiO2)

Kedu ụdị photocatalysts ị na-enye maka ngwa ọgwụgwọ mmiri?

Kedu ụdị photocatalysts ị na-enye maka ngwa nhazi mmiri?

Enwere m ike ịkọwa ihe ndị bụ isi nke photocatalysts gị?

  1. titanium dioxide (tio₂): dị na ụdị anatase (nke kachasị arụ ọrụ maka photocatalysis) ma ọ bụ rutile, mgbe ụfọdụ na-etinye ihe dịka nitrogen (n) ma ọ bụ tungsten (w) iji melite ịnakwere ìhè na-ahụ anya.
  2. zinc oxide (zno) photocatalysts bụ nke e ji zn na o mee, nwere usoro wurtzite na bandgap nke dị gburugburu 3.2 ev. ịtinye metal (fe, cu, ce) ma ọ bụ non-metal (n, s), ịmepụta ngwakọta (dịka, zno/tio₂, zno/graphene), ma ọ bụ mgbanwe elu (dịka, itinye metal dị mma) nwere ike imeziwanye arụmọrụ ha. ndụmọdụ ndị a na-eme ka absorption ọkụ, ịkekọrịta ụgwọ, na arụmọrụ catalytic ka mma.

Ihe Mbipụta Ndị Ọgwụ

Others

  1. ngwa ọgwụ.

Olee otú ihe ndị na-eme photocatalysts gị si dị irè n'ịhichapụ pollutants organic?

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Kedu ihe pụrụ iche photocatalysts gị nwere maka ngwa ọgwụgwọ mmiri?

  1. tio₂: nchekwa kemịkal dị elu, na-adịghị emerụ ahụ, na-arụ ọrụ nke ọma n'okpuru uv. zno: na-emeghachi omume nke ọma na anyanwụ, nwere ezigbo ọrụ antibacterial karịa tio₂. doping dị elu: na-emeziwanye ịnakwere ọkụ nke a na-ahụ.
  2. ike oxidation siri ike na-enye ohere maka mineralization zuru ezu nke mmetọ organic.

Ịdị mma photocatalysts gị na-enweta nke ọma n'okpuru ìhè UV, ìhè doro anya, ma ọ bụ ma abụọ?

Gịnị bụ arụmọrụ nke photocatalysts gị na ọnọdụ ọkụ dị iche iche?

  1. n'okpuru uv siri ike (lamp 365 nm, 10-50 mw/cm²): ncheta ngwa ngwa (90% nke mmetọ n'ime 2-3 awa). n'okpuru anyanwụ eke: zno na-eme nke ọma karịa tio₂. n'okpuru led na-ahụ anya (450-600 nm): ọrụ ka mma site na doping (dịka, n-tio₂, ag-zno).
  2. ọtụtụ elu (n'ozuzu > 90% mmebi nke ihe na-emebi n'ime awa)

Ee

Ọ bụrụ na ee, ị nwere ike ịkekọrịta akwụkwọ ọmụmụ ma ọ bụ akwụkwọ ndị na-egosi arụmọrụ ha?

  1. ee, akwụkwọ sayensị e bipụtara na akwụkwọ akụkọ dịka applied catalysis b: environmental na journal of hazardous materials na-akọwa arụmọrụ nke tio₂ na zno photocatalysts.
  2. nnone

Kedu ihe achọrọ iji jiri photocatalysts anyị na usoro nchịkọta mmiri?

  1. isi ọkụ: uv (lamp hg, uv led) ma ọ bụ anyanwụ. mpụta kọntaktị: emebere ka ọ bụrụ nke kachasị site na mmiri site na membranes ma ọ bụ nanoparticles na-ejide. okpomọkụ kacha mma: 20-40°c. ph: kacha mma n'etiti 5 na 9, dabere na photocatalyst.
  2. isi iyi ọkụ nha nke catalyst oge mmeghachi omume ph nhazi reactor nha nke mmetọ ike iji ya mee ọzọ

Kedu mmefu ego a na-akwado nke photocatalyst kwa lita mmiri maka ọgwụgwọ dị irè?

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Kedu ka ọnọdụ gburugburu (dịka pH, okpomọkụ, na turbidity) si emetụta arụmọrụ photocatalyst?

  1. ph: zno adịghịkwa njikere na gburugburu acidic (ihe ize ndụ nke ịda). okpomọkụ: ọrụ na-arị elu n'etiti 25-40°c. turbidity: ihe ndị a na-ejide nwere ike igbochi ìhè ma belata arụmọrụ.
  2. ike mmiri na-eme ka ìhè ghara ịbanye, na-eme ka mmeghachi omume nke catalysts belata. ọ na-eme ka mmepụta hydroxyl radicals ka mma, mana ọ nwere ike belata ụfọdụ mmekọrịta pollutants.

Ee

Gịnị bụ ndụ ọdụm nke photocatalysts gị n'oge eji ya na-adịgide adịgide?

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Enwere ike iji fotokatalysts gị meegharịa ma ọ bụ jiri ya ọzọ? Ọ dị otú a, gịnị ka e mere?

  1. ee, site na: nchacha na ihicha (maka nanoparticles na-ejide). ike na 400-500°c (nchekwa elu). nchekwa kemịkal site na h₂o₂ ma ọ bụ acid dị nro.
  2. ee. nlekọta ọkụ: ikwu ọkụ na 300-500°c iji wepụ ihe na-emebi organic. ihicha kemịkal: iji acid dị ntakịrị (hcl, hno₃) ma ọ bụ ngwọta alkaline iji kpochapụ ihe na-emebi elu. nlekọta ultrasonic: sonication iji kesaa mkpụrụ ihe jikọtara ọnụ. nkwado elu: iji kpuchie na ihe dịka tio₂ ma ọ bụ itinye metal.

Kedu ihe nchekwa kwesịrị inwe mgbe ị na-eji photocatalysts gị?

  1. jiri akpụkpọ ụkwụ na mask rụọ ọrụ na nanoparticles. zere inwe ikuku na ntụ ntụ tio₂/zno gbawara. chekwaa n'ebe na-enweghị mmiri na ọkụ.
  2. jiri akpụkpọ ụkwụ, mkpuchi ihu, na anya nchedo mgbe ị na-emekọrịta zno nanoparticles. zere inwe ikuku ma ọ bụ mmetụ n'ahụ, n'ihi na obere zno na-eme ka irighiri.

Ee

Kedu ka ndị ọrụ si kwupụta banyere ahụmịhe ha na photocatalysts gị na ọgwụgwọ mmiri?

  1. uru: ọrụ dị elu, ọnụ ahịa dị ala, nkwado na ọtụtụ isi mmalite ọkụ. ọnwụ: mkpa maka ịsacha mgbe eji na nkwụsị, belata arụmọrụ na mmiri na-adịghị ọcha.
  2. ogologo arụmọrụ na ịkpụpụ ihe na-emebi emebi dịka agba na ọgwụ. na-arụ ọrụ nke ọma n'okpuru ọkụ uv na ọkụ na-ahụ anya (maka usoro zno gbanwere). a na-enyere ya aka ịrụzi ma jiri ya ọzọ na ọgwụgwọ kwesịrị ekwesị.

Kedu mmepe ma ọ bụ ọhụụ ọ bụla ị na-eme atụmatụ na mpaghara photocatalysts maka ịme mmiri?

    Gịnị bụ mmepe ma ọ bụ ihe ọhụrụ ị na-eme atụmatụ na mpaghara photocatalysts maka ọgwụgwọ mmiri?

    1. doped photocatalysts (ag, n, c, fe) maka mmegharị ọkụ na-ahụ anya. nanostructured supports (graphene, mofs) iji melite arụmọrụ. sistem jikọtara na membrane filtration iji gbochie mgbasa nke nanoparticle.
    2. doping na nchegharị mpụta: tinye fe, n, ma ọ bụ ag iji melite arụmọrụ photocatalytic na nkwụsi ike.
    Mepụta nchọpụta gịZaa ajụjụ a